| File: | dev/pci/drm/i915/display/intel_backlight.c |
| Warning: | line 1506, column 27 Value stored to 'dev_priv' during its initialization is never read |
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| 1 | // SPDX-License-Identifier: MIT |
| 2 | /* |
| 3 | * Copyright © 2021 Intel Corporation |
| 4 | */ |
| 5 | |
| 6 | #include <linux/backlight.h> |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/pwm.h> |
| 9 | #include <linux/string_helpers.h> |
| 10 | |
| 11 | #include <acpi/video.h> |
| 12 | |
| 13 | #include "intel_backlight.h" |
| 14 | #include "intel_backlight_regs.h" |
| 15 | #include "intel_connector.h" |
| 16 | #include "intel_de.h" |
| 17 | #include "intel_display_types.h" |
| 18 | #include "intel_dp_aux_backlight.h" |
| 19 | #include "intel_dsi_dcs_backlight.h" |
| 20 | #include "intel_panel.h" |
| 21 | #include "intel_pci_config.h" |
| 22 | #include "intel_pps.h" |
| 23 | #include "intel_quirks.h" |
| 24 | |
| 25 | /** |
| 26 | * scale - scale values from one range to another |
| 27 | * @source_val: value in range [@source_min..@source_max] |
| 28 | * @source_min: minimum legal value for @source_val |
| 29 | * @source_max: maximum legal value for @source_val |
| 30 | * @target_min: corresponding target value for @source_min |
| 31 | * @target_max: corresponding target value for @source_max |
| 32 | * |
| 33 | * Return @source_val in range [@source_min..@source_max] scaled to range |
| 34 | * [@target_min..@target_max]. |
| 35 | */ |
| 36 | static u32 scale(u32 source_val, |
| 37 | u32 source_min, u32 source_max, |
| 38 | u32 target_min, u32 target_max) |
| 39 | { |
| 40 | u64 target_val; |
| 41 | |
| 42 | WARN_ON(source_min > source_max)({ int __ret = !!(source_min > source_max); if (__ret) printf ("WARNING %s failed at %s:%d\n", "source_min > source_max" , "/usr/src/sys/dev/pci/drm/i915/display/intel_backlight.c", 42 ); __builtin_expect(!!(__ret), 0); }); |
| 43 | WARN_ON(target_min > target_max)({ int __ret = !!(target_min > target_max); if (__ret) printf ("WARNING %s failed at %s:%d\n", "target_min > target_max" , "/usr/src/sys/dev/pci/drm/i915/display/intel_backlight.c", 43 ); __builtin_expect(!!(__ret), 0); }); |
| 44 | |
| 45 | /* defensive */ |
| 46 | source_val = clamp(source_val, source_min, source_max)({ __typeof(source_val) __min_a = (({ __typeof(source_val) __max_a = (source_val); __typeof(source_val) __max_b = (source_min); __max_a > __max_b ? __max_a : __max_b; })); __typeof(source_val ) __min_b = (source_max); __min_a < __min_b ? __min_a : __min_b ; }); |
| 47 | |
| 48 | /* avoid overflows */ |
| 49 | target_val = mul_u32_u32(source_val - source_min, |
| 50 | target_max - target_min); |
| 51 | target_val = DIV_ROUND_CLOSEST_ULL(target_val, source_max - source_min)(((target_val) + ((source_max - source_min) / 2)) / (source_max - source_min)); |
| 52 | target_val += target_min; |
| 53 | |
| 54 | return target_val; |
| 55 | } |
| 56 | |
| 57 | /* |
| 58 | * Scale user_level in range [0..user_max] to [0..hw_max], clamping the result |
| 59 | * to [hw_min..hw_max]. |
| 60 | */ |
| 61 | static u32 clamp_user_to_hw(struct intel_connector *connector, |
| 62 | u32 user_level, u32 user_max) |
| 63 | { |
| 64 | struct intel_panel *panel = &connector->panel; |
| 65 | u32 hw_level; |
| 66 | |
| 67 | hw_level = scale(user_level, 0, user_max, 0, panel->backlight.max); |
| 68 | hw_level = clamp(hw_level, panel->backlight.min, panel->backlight.max)({ __typeof(hw_level) __min_a = (({ __typeof(hw_level) __max_a = (hw_level); __typeof(hw_level) __max_b = (panel->backlight .min); __max_a > __max_b ? __max_a : __max_b; })); __typeof (hw_level) __min_b = (panel->backlight.max); __min_a < __min_b ? __min_a : __min_b; }); |
| 69 | |
| 70 | return hw_level; |
| 71 | } |
| 72 | |
| 73 | /* Scale hw_level in range [hw_min..hw_max] to [0..user_max]. */ |
| 74 | static u32 scale_hw_to_user(struct intel_connector *connector, |
| 75 | u32 hw_level, u32 user_max) |
| 76 | { |
| 77 | struct intel_panel *panel = &connector->panel; |
| 78 | |
| 79 | return scale(hw_level, panel->backlight.min, panel->backlight.max, |
| 80 | 0, user_max); |
| 81 | } |
| 82 | |
| 83 | u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 val) |
| 84 | { |
| 85 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 86 | struct intel_panel *panel = &connector->panel; |
| 87 | |
| 88 | drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0)({ int __ret = !!((panel->backlight.pwm_level_max == 0)); if (__ret) printf("%s %s: " "%s", dev_driver_string(((&dev_priv ->drm))->dev), "", "drm_WARN_ON(" "panel->backlight.pwm_level_max == 0" ")"); __builtin_expect(!!(__ret), 0); }); |
| 89 | |
| 90 | if (dev_priv->params.invert_brightness < 0) |
| 91 | return val; |
| 92 | |
| 93 | if (dev_priv->params.invert_brightness > 0 || |
| 94 | intel_has_quirk(dev_priv, QUIRK_INVERT_BRIGHTNESS)) { |
| 95 | return panel->backlight.pwm_level_max - val + panel->backlight.pwm_level_min; |
| 96 | } |
| 97 | |
| 98 | return val; |
| 99 | } |
| 100 | |
| 101 | void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state, u32 val) |
| 102 | { |
| 103 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 104 | struct drm_i915_privateinteldrm_softc *i915 = to_i915(connector->base.dev); |
| 105 | struct intel_panel *panel = &connector->panel; |
| 106 | |
| 107 | drm_dbg_kms(&i915->drm, "set backlight PWM = %d\n", val)__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_KMS, "set backlight PWM = %d\n" , val); |
| 108 | panel->backlight.pwm_funcs->set(conn_state, val); |
| 109 | } |
| 110 | |
| 111 | u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 val) |
| 112 | { |
| 113 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 114 | struct intel_panel *panel = &connector->panel; |
| 115 | |
| 116 | drm_WARN_ON_ONCE(&dev_priv->drm,({ static int __warned; int __ret = !!((panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)); if (__ret && !__warned) { printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON_ONCE(" "panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0" ")"); __warned = 1; } __builtin_expect(!!(__ret), 0); }) |
| 117 | panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)({ static int __warned; int __ret = !!((panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)); if (__ret && !__warned) { printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON_ONCE(" "panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0" ")"); __warned = 1; } __builtin_expect(!!(__ret), 0); }); |
| 118 | |
| 119 | val = scale(val, panel->backlight.min, panel->backlight.max, |
| 120 | panel->backlight.pwm_level_min, panel->backlight.pwm_level_max); |
| 121 | |
| 122 | return intel_backlight_invert_pwm_level(connector, val); |
| 123 | } |
| 124 | |
| 125 | u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val) |
| 126 | { |
| 127 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 128 | struct intel_panel *panel = &connector->panel; |
| 129 | |
| 130 | drm_WARN_ON_ONCE(&dev_priv->drm,({ static int __warned; int __ret = !!((panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)); if (__ret && !__warned) { printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON_ONCE(" "panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0" ")"); __warned = 1; } __builtin_expect(!!(__ret), 0); }) |
| 131 | panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)({ static int __warned; int __ret = !!((panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0)); if (__ret && !__warned) { printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON_ONCE(" "panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0" ")"); __warned = 1; } __builtin_expect(!!(__ret), 0); }); |
| 132 | |
| 133 | if (dev_priv->params.invert_brightness > 0 || |
| 134 | (dev_priv->params.invert_brightness == 0 && intel_has_quirk(dev_priv, QUIRK_INVERT_BRIGHTNESS))) |
| 135 | val = panel->backlight.pwm_level_max - (val - panel->backlight.pwm_level_min); |
| 136 | |
| 137 | return scale(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max, |
| 138 | panel->backlight.min, panel->backlight.max); |
| 139 | } |
| 140 | |
| 141 | static u32 lpt_get_backlight(struct intel_connector *connector, enum pipe unused) |
| 142 | { |
| 143 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 144 | |
| 145 | return intel_de_read(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) })) & BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 146 | } |
| 147 | |
| 148 | static u32 pch_get_backlight(struct intel_connector *connector, enum pipe unused) |
| 149 | { |
| 150 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 151 | |
| 152 | return intel_de_read(dev_priv, BLC_PWM_CPU_CTL((const i915_reg_t){ .reg = (0x48254) })) & BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 153 | } |
| 154 | |
| 155 | static u32 i9xx_get_backlight(struct intel_connector *connector, enum pipe unused) |
| 156 | { |
| 157 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 158 | struct intel_panel *panel = &connector->panel; |
| 159 | u32 val; |
| 160 | |
| 161 | val = intel_de_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })) & BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 162 | if (DISPLAY_VER(dev_priv)((&(dev_priv)->__runtime)->display.ip.ver) < 4) |
| 163 | val >>= 1; |
| 164 | |
| 165 | if (panel->backlight.combination_mode) { |
| 166 | u8 lbpc; |
| 167 | |
| 168 | pci_read_config_byte(dev_priv->drm.pdev, LBPC0xf4, &lbpc); |
| 169 | val *= lbpc; |
| 170 | } |
| 171 | |
| 172 | return val; |
| 173 | } |
| 174 | |
| 175 | static u32 vlv_get_backlight(struct intel_connector *connector, enum pipe pipe) |
| 176 | { |
| 177 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 178 | |
| 179 | if (drm_WARN_ON(&dev_priv->drm, pipe != PIPE_A && pipe != PIPE_B)({ int __ret = !!((pipe != PIPE_A && pipe != PIPE_B)) ; if (__ret) printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON(" "pipe != PIPE_A && pipe != PIPE_B" ")"); __builtin_expect(!!(__ret), 0); })) |
| 180 | return 0; |
| 181 | |
| 182 | return intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61254)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61354)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61254)))) ) })) & BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 183 | } |
| 184 | |
| 185 | static u32 bxt_get_backlight(struct intel_connector *connector, enum pipe unused) |
| 186 | { |
| 187 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 188 | struct intel_panel *panel = &connector->panel; |
| 189 | |
| 190 | return intel_de_read(dev_priv, |
| 191 | BXT_BLC_PWM_DUTY(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8258) + (panel->backlight .controller) * ((0xC8358) - (0xC8258)))) })); |
| 192 | } |
| 193 | |
| 194 | static u32 ext_pwm_get_backlight(struct intel_connector *connector, enum pipe unused) |
| 195 | { |
| 196 | STUB()do { printf("%s: stub\n", __func__); } while(0); |
| 197 | return 0; |
| 198 | #ifdef notyet |
| 199 | struct intel_panel *panel = &connector->panel; |
| 200 | struct pwm_state state; |
| 201 | |
| 202 | pwm_get_state(panel->backlight.pwm, &state); |
| 203 | return pwm_get_relative_duty_cycle(&state, 100); |
| 204 | #endif |
| 205 | } |
| 206 | |
| 207 | static void lpt_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 208 | { |
| 209 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 210 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 211 | |
| 212 | u32 val = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) })) & ~BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 213 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) }), val | level); |
| 214 | } |
| 215 | |
| 216 | static void pch_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 217 | { |
| 218 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 219 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 220 | u32 tmp; |
| 221 | |
| 222 | tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL((const i915_reg_t){ .reg = (0x48254) })) & ~BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 223 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL((const i915_reg_t){ .reg = (0x48254) }), tmp | level); |
| 224 | } |
| 225 | |
| 226 | static void i9xx_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 227 | { |
| 228 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 229 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 230 | struct intel_panel *panel = &connector->panel; |
| 231 | u32 tmp, mask; |
| 232 | |
| 233 | drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0)({ int __ret = !!((panel->backlight.pwm_level_max == 0)); if (__ret) printf("%s %s: " "%s", dev_driver_string(((&dev_priv ->drm))->dev), "", "drm_WARN_ON(" "panel->backlight.pwm_level_max == 0" ")"); __builtin_expect(!!(__ret), 0); }); |
| 234 | |
| 235 | if (panel->backlight.combination_mode) { |
| 236 | u8 lbpc; |
| 237 | |
| 238 | lbpc = level * 0xfe / panel->backlight.pwm_level_max + 1; |
| 239 | level /= lbpc; |
| 240 | pci_write_config_byte(dev_priv->drm.pdev, LBPC0xf4, lbpc); |
| 241 | } |
| 242 | |
| 243 | if (DISPLAY_VER(dev_priv)((&(dev_priv)->__runtime)->display.ip.ver) == 4) { |
| 244 | mask = BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 245 | } else { |
| 246 | level <<= 1; |
| 247 | mask = BACKLIGHT_DUTY_CYCLE_MASK_PNV(0xfffe); |
| 248 | } |
| 249 | |
| 250 | tmp = intel_de_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })) & ~mask; |
| 251 | intel_de_write(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) }), tmp | level); |
| 252 | } |
| 253 | |
| 254 | static void vlv_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 255 | { |
| 256 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 257 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 258 | enum pipe pipe = to_intel_crtc(conn_state->crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (conn_state->crtc); (struct intel_crtc *)( (char *)__mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 259 | u32 tmp; |
| 260 | |
| 261 | tmp = intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61254)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61354)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61254)))) ) })) & ~BACKLIGHT_DUTY_CYCLE_MASK(0xffff); |
| 262 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61254)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61354)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61254)))) ) }), tmp | level); |
| 263 | } |
| 264 | |
| 265 | static void bxt_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 266 | { |
| 267 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 268 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 269 | struct intel_panel *panel = &connector->panel; |
| 270 | |
| 271 | intel_de_write(dev_priv, |
| 272 | BXT_BLC_PWM_DUTY(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8258) + (panel->backlight .controller) * ((0xC8358) - (0xC8258)))) }), level); |
| 273 | } |
| 274 | |
| 275 | static void ext_pwm_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 276 | { |
| 277 | STUB()do { printf("%s: stub\n", __func__); } while(0); |
| 278 | #ifdef notyet |
| 279 | struct intel_panel *panel = &to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );})->panel; |
| 280 | |
| 281 | pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100); |
| 282 | pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state); |
| 283 | #endif |
| 284 | } |
| 285 | |
| 286 | static void |
| 287 | intel_panel_actually_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 288 | { |
| 289 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 290 | struct drm_i915_privateinteldrm_softc *i915 = to_i915(connector->base.dev); |
| 291 | struct intel_panel *panel = &connector->panel; |
| 292 | |
| 293 | drm_dbg_kms(&i915->drm, "set backlight level = %d\n", level)__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_KMS, "set backlight level = %d\n" , level); |
| 294 | |
| 295 | panel->backlight.funcs->set(conn_state, level); |
| 296 | } |
| 297 | |
| 298 | /* set backlight brightness to level in range [0..max], assuming hw min is |
| 299 | * respected. |
| 300 | */ |
| 301 | void intel_backlight_set_acpi(const struct drm_connector_state *conn_state, |
| 302 | u32 user_level, u32 user_max) |
| 303 | { |
| 304 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 305 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 306 | struct intel_panel *panel = &connector->panel; |
| 307 | u32 hw_level; |
| 308 | |
| 309 | /* |
| 310 | * Lack of crtc may occur during driver init because |
| 311 | * connection_mutex isn't held across the entire backlight |
| 312 | * setup + modeset readout, and the BIOS can issue the |
| 313 | * requests at any time. |
| 314 | */ |
| 315 | if (!panel->backlight.present || !conn_state->crtc) |
| 316 | return; |
| 317 | |
| 318 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 319 | |
| 320 | drm_WARN_ON(&dev_priv->drm, panel->backlight.max == 0)({ int __ret = !!((panel->backlight.max == 0)); if (__ret) printf("%s %s: " "%s", dev_driver_string(((&dev_priv-> drm))->dev), "", "drm_WARN_ON(" "panel->backlight.max == 0" ")"); __builtin_expect(!!(__ret), 0); }); |
| 321 | |
| 322 | hw_level = clamp_user_to_hw(connector, user_level, user_max); |
| 323 | panel->backlight.level = hw_level; |
| 324 | |
| 325 | if (panel->backlight.device) |
| 326 | panel->backlight.device->props.brightness = |
| 327 | scale_hw_to_user(connector, |
| 328 | panel->backlight.level, |
| 329 | panel->backlight.device->props.max_brightness); |
| 330 | |
| 331 | if (panel->backlight.enabled) |
| 332 | intel_panel_actually_set_backlight(conn_state, hw_level); |
| 333 | |
| 334 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 335 | } |
| 336 | |
| 337 | static void lpt_disable_backlight(const struct drm_connector_state *old_conn_state, u32 level) |
| 338 | { |
| 339 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 340 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 341 | u32 tmp; |
| 342 | |
| 343 | intel_backlight_set_pwm_level(old_conn_state, level); |
| 344 | |
| 345 | /* |
| 346 | * Although we don't support or enable CPU PWM with LPT/SPT based |
| 347 | * systems, it may have been enabled prior to loading the |
| 348 | * driver. Disable to avoid warnings on LCPLL disable. |
| 349 | * |
| 350 | * This needs rework if we need to add support for CPU PWM on PCH split |
| 351 | * platforms. |
| 352 | */ |
| 353 | tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 354 | if (tmp & BLM_PWM_ENABLE(1 << 31)) { |
| 355 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "cpu backlight was enabled, disabling\n" ) |
| 356 | "cpu backlight was enabled, disabling\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "cpu backlight was enabled, disabling\n" ); |
| 357 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), |
| 358 | tmp & ~BLM_PWM_ENABLE(1 << 31)); |
| 359 | } |
| 360 | |
| 361 | tmp = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 362 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), tmp & ~BLM_PCH_PWM_ENABLE(1 << 31)); |
| 363 | } |
| 364 | |
| 365 | static void pch_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 366 | { |
| 367 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 368 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 369 | u32 tmp; |
| 370 | |
| 371 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 372 | |
| 373 | tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 374 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), tmp & ~BLM_PWM_ENABLE(1 << 31)); |
| 375 | |
| 376 | tmp = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 377 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), tmp & ~BLM_PCH_PWM_ENABLE(1 << 31)); |
| 378 | } |
| 379 | |
| 380 | static void i9xx_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 381 | { |
| 382 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 383 | } |
| 384 | |
| 385 | static void i965_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 386 | { |
| 387 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(old_conn_state->connector->dev); |
| 388 | u32 tmp; |
| 389 | |
| 390 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 391 | |
| 392 | tmp = intel_de_read(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) })); |
| 393 | intel_de_write(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) }), tmp & ~BLM_PWM_ENABLE(1 << 31)); |
| 394 | } |
| 395 | |
| 396 | static void vlv_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 397 | { |
| 398 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 399 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 400 | enum pipe pipe = to_intel_crtc(old_conn_state->crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (old_conn_state->crtc); (struct intel_crtc *)( (char *) __mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 401 | u32 tmp; |
| 402 | |
| 403 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 404 | |
| 405 | tmp = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) })); |
| 406 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) }), |
| 407 | tmp & ~BLM_PWM_ENABLE(1 << 31)); |
| 408 | } |
| 409 | |
| 410 | static void bxt_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 411 | { |
| 412 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 413 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 414 | struct intel_panel *panel = &connector->panel; |
| 415 | u32 tmp; |
| 416 | |
| 417 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 418 | |
| 419 | tmp = intel_de_read(dev_priv, |
| 420 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 421 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 422 | tmp & ~BXT_BLC_PWM_ENABLE(1 << 31)); |
| 423 | |
| 424 | if (panel->backlight.controller == 1) { |
| 425 | val = intel_de_read(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) })); |
| 426 | val &= ~UTIL_PIN_ENABLE(1 << 31); |
| 427 | intel_de_write(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) }), val); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | static void cnp_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val) |
| 432 | { |
| 433 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 434 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 435 | struct intel_panel *panel = &connector->panel; |
| 436 | u32 tmp; |
| 437 | |
| 438 | intel_backlight_set_pwm_level(old_conn_state, val); |
| 439 | |
| 440 | tmp = intel_de_read(dev_priv, |
| 441 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 442 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 443 | tmp & ~BXT_BLC_PWM_ENABLE(1 << 31)); |
| 444 | } |
| 445 | |
| 446 | static void ext_pwm_disable_backlight(const struct drm_connector_state *old_conn_state, u32 level) |
| 447 | { |
| 448 | STUB()do { printf("%s: stub\n", __func__); } while(0); |
| 449 | #ifdef notyet |
| 450 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 451 | struct intel_panel *panel = &connector->panel; |
| 452 | |
| 453 | intel_backlight_set_pwm_level(old_conn_state, level); |
| 454 | |
| 455 | panel->backlight.pwm_state.enabled = false0; |
| 456 | pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state); |
| 457 | #endif |
| 458 | } |
| 459 | |
| 460 | void intel_backlight_disable(const struct drm_connector_state *old_conn_state) |
| 461 | { |
| 462 | struct intel_connector *connector = to_intel_connector(old_conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (old_conn_state->connector); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 463 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 464 | struct intel_panel *panel = &connector->panel; |
| 465 | |
| 466 | if (!panel->backlight.present) |
| 467 | return; |
| 468 | |
| 469 | /* |
| 470 | * Do not disable backlight on the vga_switcheroo path. When switching |
| 471 | * away from i915, the other client may depend on i915 to handle the |
| 472 | * backlight. This will leave the backlight on unnecessarily when |
| 473 | * another client is not activated. |
| 474 | */ |
| 475 | if (dev_priv->drm.switch_power_state == DRM_SWITCH_POWER_CHANGING) { |
| 476 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Skipping backlight disable on vga switch\n" ) |
| 477 | "Skipping backlight disable on vga switch\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Skipping backlight disable on vga switch\n" ); |
| 478 | return; |
| 479 | } |
| 480 | |
| 481 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 482 | |
| 483 | if (panel->backlight.device) |
| 484 | panel->backlight.device->props.power = FB_BLANK_POWERDOWN4; |
| 485 | panel->backlight.enabled = false0; |
| 486 | panel->backlight.funcs->disable(old_conn_state, 0); |
| 487 | |
| 488 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 489 | } |
| 490 | |
| 491 | static void lpt_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 492 | const struct drm_connector_state *conn_state, u32 level) |
| 493 | { |
| 494 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 495 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 496 | struct intel_panel *panel = &connector->panel; |
| 497 | u32 pch_ctl1, pch_ctl2, schicken; |
| 498 | |
| 499 | pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 500 | if (pch_ctl1 & BLM_PCH_PWM_ENABLE(1 << 31)) { |
| 501 | drm_dbg_kms(&dev_priv->drm, "pch backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "pch backlight already enabled\n" ); |
| 502 | pch_ctl1 &= ~BLM_PCH_PWM_ENABLE(1 << 31); |
| 503 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), pch_ctl1); |
| 504 | } |
| 505 | |
| 506 | if (HAS_PCH_LPT(dev_priv)(((dev_priv)->pch_type) == PCH_LPT)) { |
| 507 | schicken = intel_de_read(dev_priv, SOUTH_CHICKEN2((const i915_reg_t){ .reg = (0xc2004) })); |
| 508 | if (panel->backlight.alternate_pwm_increment) |
| 509 | schicken |= LPT_PWM_GRANULARITY(1 << 5); |
| 510 | else |
| 511 | schicken &= ~LPT_PWM_GRANULARITY(1 << 5); |
| 512 | intel_de_write(dev_priv, SOUTH_CHICKEN2((const i915_reg_t){ .reg = (0xc2004) }), schicken); |
| 513 | } else { |
| 514 | schicken = intel_de_read(dev_priv, SOUTH_CHICKEN1((const i915_reg_t){ .reg = (0xc2000) })); |
| 515 | if (panel->backlight.alternate_pwm_increment) |
| 516 | schicken |= SPT_PWM_GRANULARITY(1 << 0); |
| 517 | else |
| 518 | schicken &= ~SPT_PWM_GRANULARITY(1 << 0); |
| 519 | intel_de_write(dev_priv, SOUTH_CHICKEN1((const i915_reg_t){ .reg = (0xc2000) }), schicken); |
| 520 | } |
| 521 | |
| 522 | pch_ctl2 = panel->backlight.pwm_level_max << 16; |
| 523 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) }), pch_ctl2); |
| 524 | |
| 525 | pch_ctl1 = 0; |
| 526 | if (panel->backlight.active_low_pwm) |
| 527 | pch_ctl1 |= BLM_PCH_POLARITY(1 << 29); |
| 528 | |
| 529 | /* After LPT, override is the default. */ |
| 530 | if (HAS_PCH_LPT(dev_priv)(((dev_priv)->pch_type) == PCH_LPT)) |
| 531 | pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE(1 << 30); |
| 532 | |
| 533 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), pch_ctl1); |
| 534 | intel_de_posting_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 535 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), |
| 536 | pch_ctl1 | BLM_PCH_PWM_ENABLE(1 << 31)); |
| 537 | |
| 538 | /* This won't stick until the above enable. */ |
| 539 | intel_backlight_set_pwm_level(conn_state, level); |
| 540 | } |
| 541 | |
| 542 | static void pch_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 543 | const struct drm_connector_state *conn_state, u32 level) |
| 544 | { |
| 545 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 546 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 547 | struct intel_panel *panel = &connector->panel; |
| 548 | enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; |
| 549 | u32 cpu_ctl2, pch_ctl1, pch_ctl2; |
| 550 | |
| 551 | cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 552 | if (cpu_ctl2 & BLM_PWM_ENABLE(1 << 31)) { |
| 553 | drm_dbg_kms(&dev_priv->drm, "cpu backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "cpu backlight already enabled\n" ); |
| 554 | cpu_ctl2 &= ~BLM_PWM_ENABLE(1 << 31); |
| 555 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), cpu_ctl2); |
| 556 | } |
| 557 | |
| 558 | pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 559 | if (pch_ctl1 & BLM_PCH_PWM_ENABLE(1 << 31)) { |
| 560 | drm_dbg_kms(&dev_priv->drm, "pch backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "pch backlight already enabled\n" ); |
| 561 | pch_ctl1 &= ~BLM_PCH_PWM_ENABLE(1 << 31); |
| 562 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), pch_ctl1); |
| 563 | } |
| 564 | |
| 565 | if (cpu_transcoder == TRANSCODER_EDP) |
| 566 | cpu_ctl2 = BLM_TRANSCODER_EDP(3 << 29); |
| 567 | else |
| 568 | cpu_ctl2 = BLM_PIPE(cpu_transcoder)((cpu_transcoder) << 29); |
| 569 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), cpu_ctl2); |
| 570 | intel_de_posting_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 571 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), cpu_ctl2 | BLM_PWM_ENABLE(1 << 31)); |
| 572 | |
| 573 | /* This won't stick until the above enable. */ |
| 574 | intel_backlight_set_pwm_level(conn_state, level); |
| 575 | |
| 576 | pch_ctl2 = panel->backlight.pwm_level_max << 16; |
| 577 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) }), pch_ctl2); |
| 578 | |
| 579 | pch_ctl1 = 0; |
| 580 | if (panel->backlight.active_low_pwm) |
| 581 | pch_ctl1 |= BLM_PCH_POLARITY(1 << 29); |
| 582 | |
| 583 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), pch_ctl1); |
| 584 | intel_de_posting_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 585 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), |
| 586 | pch_ctl1 | BLM_PCH_PWM_ENABLE(1 << 31)); |
| 587 | } |
| 588 | |
| 589 | static void i9xx_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 590 | const struct drm_connector_state *conn_state, u32 level) |
| 591 | { |
| 592 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 593 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 594 | struct intel_panel *panel = &connector->panel; |
| 595 | u32 ctl, freq; |
| 596 | |
| 597 | ctl = intel_de_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })); |
| 598 | if (ctl & BACKLIGHT_DUTY_CYCLE_MASK_PNV(0xfffe)) { |
| 599 | drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight already enabled\n" ); |
| 600 | intel_de_write(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) }), 0); |
| 601 | } |
| 602 | |
| 603 | freq = panel->backlight.pwm_level_max; |
| 604 | if (panel->backlight.combination_mode) |
| 605 | freq /= 0xff; |
| 606 | |
| 607 | ctl = freq << 17; |
| 608 | if (panel->backlight.combination_mode) |
| 609 | ctl |= BLM_LEGACY_MODE(1 << 16); |
| 610 | if (IS_PINEVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_PINEVIEW) && panel->backlight.active_low_pwm) |
| 611 | ctl |= BLM_POLARITY_PNV(1 << 0); |
| 612 | |
| 613 | intel_de_write(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) }), ctl); |
| 614 | intel_de_posting_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })); |
| 615 | |
| 616 | /* XXX: combine this into above write? */ |
| 617 | intel_backlight_set_pwm_level(conn_state, level); |
| 618 | |
| 619 | /* |
| 620 | * Needed to enable backlight on some 855gm models. BLC_HIST_CTL is |
| 621 | * 855gm only, but checking for gen2 is safe, as 855gm is the only gen2 |
| 622 | * that has backlight. |
| 623 | */ |
| 624 | if (DISPLAY_VER(dev_priv)((&(dev_priv)->__runtime)->display.ip.ver) == 2) |
| 625 | intel_de_write(dev_priv, BLC_HIST_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61260) }), BLM_HISTOGRAM_ENABLE(1 << 31)); |
| 626 | } |
| 627 | |
| 628 | static void i965_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 629 | const struct drm_connector_state *conn_state, u32 level) |
| 630 | { |
| 631 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 632 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 633 | struct intel_panel *panel = &connector->panel; |
| 634 | enum pipe pipe = to_intel_crtc(conn_state->crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (conn_state->crtc); (struct intel_crtc *)( (char *)__mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 635 | u32 ctl, ctl2, freq; |
| 636 | |
| 637 | ctl2 = intel_de_read(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) })); |
| 638 | if (ctl2 & BLM_PWM_ENABLE(1 << 31)) { |
| 639 | drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight already enabled\n" ); |
| 640 | ctl2 &= ~BLM_PWM_ENABLE(1 << 31); |
| 641 | intel_de_write(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) }), ctl2); |
| 642 | } |
| 643 | |
| 644 | freq = panel->backlight.pwm_level_max; |
| 645 | if (panel->backlight.combination_mode) |
| 646 | freq /= 0xff; |
| 647 | |
| 648 | ctl = freq << 16; |
| 649 | intel_de_write(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) }), ctl); |
| 650 | |
| 651 | ctl2 = BLM_PIPE(pipe)((pipe) << 29); |
| 652 | if (panel->backlight.combination_mode) |
| 653 | ctl2 |= BLM_COMBINATION_MODE(1 << 30); |
| 654 | if (panel->backlight.active_low_pwm) |
| 655 | ctl2 |= BLM_POLARITY_I965(1 << 28); |
| 656 | intel_de_write(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) }), ctl2); |
| 657 | intel_de_posting_read(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) })); |
| 658 | intel_de_write(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) }), ctl2 | BLM_PWM_ENABLE(1 << 31)); |
| 659 | |
| 660 | intel_backlight_set_pwm_level(conn_state, level); |
| 661 | } |
| 662 | |
| 663 | static void vlv_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 664 | const struct drm_connector_state *conn_state, u32 level) |
| 665 | { |
| 666 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 667 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 668 | struct intel_panel *panel = &connector->panel; |
| 669 | enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (crtc_state->uapi.crtc); (struct intel_crtc *)( (char * )__mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 670 | u32 ctl, ctl2; |
| 671 | |
| 672 | ctl2 = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) })); |
| 673 | if (ctl2 & BLM_PWM_ENABLE(1 << 31)) { |
| 674 | drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight already enabled\n" ); |
| 675 | ctl2 &= ~BLM_PWM_ENABLE(1 << 31); |
| 676 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) }), ctl2); |
| 677 | } |
| 678 | |
| 679 | ctl = panel->backlight.pwm_level_max << 16; |
| 680 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61254)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61354)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61254)))) ) }), ctl); |
| 681 | |
| 682 | /* XXX: combine this into above write? */ |
| 683 | intel_backlight_set_pwm_level(conn_state, level); |
| 684 | |
| 685 | ctl2 = 0; |
| 686 | if (panel->backlight.active_low_pwm) |
| 687 | ctl2 |= BLM_POLARITY_I965(1 << 28); |
| 688 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) }), ctl2); |
| 689 | intel_de_posting_read(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) })); |
| 690 | intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) }), |
| 691 | ctl2 | BLM_PWM_ENABLE(1 << 31)); |
| 692 | } |
| 693 | |
| 694 | static void bxt_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 695 | const struct drm_connector_state *conn_state, u32 level) |
| 696 | { |
| 697 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 698 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 699 | struct intel_panel *panel = &connector->panel; |
| 700 | enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (crtc_state->uapi.crtc); (struct intel_crtc *)( (char * )__mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 701 | u32 pwm_ctl, val; |
| 702 | |
| 703 | /* Controller 1 uses the utility pin. */ |
| 704 | if (panel->backlight.controller == 1) { |
| 705 | val = intel_de_read(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) })); |
| 706 | if (val & UTIL_PIN_ENABLE(1 << 31)) { |
| 707 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "util pin already enabled\n" ) |
| 708 | "util pin already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "util pin already enabled\n" ); |
| 709 | val &= ~UTIL_PIN_ENABLE(1 << 31); |
| 710 | intel_de_write(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) }), val); |
| 711 | } |
| 712 | |
| 713 | val = 0; |
| 714 | if (panel->backlight.util_pin_active_low) |
| 715 | val |= UTIL_PIN_POLARITY(1 << 22); |
| 716 | intel_de_write(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) }), |
| 717 | val | UTIL_PIN_PIPE(pipe)((pipe) << 29) | UTIL_PIN_MODE_PWM(1 << 24) | UTIL_PIN_ENABLE(1 << 31)); |
| 718 | } |
| 719 | |
| 720 | pwm_ctl = intel_de_read(dev_priv, |
| 721 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 722 | if (pwm_ctl & BXT_BLC_PWM_ENABLE(1 << 31)) { |
| 723 | drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight already enabled\n" ); |
| 724 | pwm_ctl &= ~BXT_BLC_PWM_ENABLE(1 << 31); |
| 725 | intel_de_write(dev_priv, |
| 726 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 727 | pwm_ctl); |
| 728 | } |
| 729 | |
| 730 | intel_de_write(dev_priv, |
| 731 | BXT_BLC_PWM_FREQ(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8254) + (panel->backlight .controller) * ((0xC8354) - (0xC8254)))) }), |
| 732 | panel->backlight.pwm_level_max); |
| 733 | |
| 734 | intel_backlight_set_pwm_level(conn_state, level); |
| 735 | |
| 736 | pwm_ctl = 0; |
| 737 | if (panel->backlight.active_low_pwm) |
| 738 | pwm_ctl |= BXT_BLC_PWM_POLARITY(1 << 29); |
| 739 | |
| 740 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 741 | pwm_ctl); |
| 742 | intel_de_posting_read(dev_priv, |
| 743 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 744 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 745 | pwm_ctl | BXT_BLC_PWM_ENABLE(1 << 31)); |
| 746 | } |
| 747 | |
| 748 | static void cnp_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 749 | const struct drm_connector_state *conn_state, u32 level) |
| 750 | { |
| 751 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 752 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 753 | struct intel_panel *panel = &connector->panel; |
| 754 | u32 pwm_ctl; |
| 755 | |
| 756 | pwm_ctl = intel_de_read(dev_priv, |
| 757 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 758 | if (pwm_ctl & BXT_BLC_PWM_ENABLE(1 << 31)) { |
| 759 | drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight already enabled\n" ); |
| 760 | pwm_ctl &= ~BXT_BLC_PWM_ENABLE(1 << 31); |
| 761 | intel_de_write(dev_priv, |
| 762 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 763 | pwm_ctl); |
| 764 | } |
| 765 | |
| 766 | intel_de_write(dev_priv, |
| 767 | BXT_BLC_PWM_FREQ(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8254) + (panel->backlight .controller) * ((0xC8354) - (0xC8254)))) }), |
| 768 | panel->backlight.pwm_level_max); |
| 769 | |
| 770 | intel_backlight_set_pwm_level(conn_state, level); |
| 771 | |
| 772 | pwm_ctl = 0; |
| 773 | if (panel->backlight.active_low_pwm) |
| 774 | pwm_ctl |= BXT_BLC_PWM_POLARITY(1 << 29); |
| 775 | |
| 776 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 777 | pwm_ctl); |
| 778 | intel_de_posting_read(dev_priv, |
| 779 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 780 | intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) }), |
| 781 | pwm_ctl | BXT_BLC_PWM_ENABLE(1 << 31)); |
| 782 | } |
| 783 | |
| 784 | static void ext_pwm_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 785 | const struct drm_connector_state *conn_state, u32 level) |
| 786 | { |
| 787 | STUB()do { printf("%s: stub\n", __func__); } while(0); |
| 788 | #ifdef notyet |
| 789 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 790 | struct intel_panel *panel = &connector->panel; |
| 791 | |
| 792 | pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100); |
| 793 | panel->backlight.pwm_state.enabled = true1; |
| 794 | pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state); |
| 795 | #endif |
| 796 | } |
| 797 | |
| 798 | static void __intel_backlight_enable(const struct intel_crtc_state *crtc_state, |
| 799 | const struct drm_connector_state *conn_state) |
| 800 | { |
| 801 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 802 | struct intel_panel *panel = &connector->panel; |
| 803 | |
| 804 | WARN_ON(panel->backlight.max == 0)({ int __ret = !!(panel->backlight.max == 0); if (__ret) printf ("WARNING %s failed at %s:%d\n", "panel->backlight.max == 0" , "/usr/src/sys/dev/pci/drm/i915/display/intel_backlight.c", 804 ); __builtin_expect(!!(__ret), 0); }); |
| 805 | |
| 806 | if (panel->backlight.level <= panel->backlight.min) { |
| 807 | panel->backlight.level = panel->backlight.max; |
| 808 | if (panel->backlight.device) |
| 809 | panel->backlight.device->props.brightness = |
| 810 | scale_hw_to_user(connector, |
| 811 | panel->backlight.level, |
| 812 | panel->backlight.device->props.max_brightness); |
| 813 | } |
| 814 | |
| 815 | panel->backlight.funcs->enable(crtc_state, conn_state, panel->backlight.level); |
| 816 | panel->backlight.enabled = true1; |
| 817 | if (panel->backlight.device) |
| 818 | panel->backlight.device->props.power = FB_BLANK_UNBLANK0; |
| 819 | } |
| 820 | |
| 821 | void intel_backlight_enable(const struct intel_crtc_state *crtc_state, |
| 822 | const struct drm_connector_state *conn_state) |
| 823 | { |
| 824 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 825 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 826 | struct intel_panel *panel = &connector->panel; |
| 827 | enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)({ const __typeof( ((struct intel_crtc *)0)->base ) *__mptr = (crtc_state->uapi.crtc); (struct intel_crtc *)( (char * )__mptr - __builtin_offsetof(struct intel_crtc, base) );})->pipe; |
| 828 | |
| 829 | if (!panel->backlight.present) |
| 830 | return; |
| 831 | |
| 832 | drm_dbg_kms(&dev_priv->drm, "pipe %c\n", pipe_name(pipe))__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "pipe %c\n", ((pipe ) + 'A')); |
| 833 | |
| 834 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 835 | |
| 836 | __intel_backlight_enable(crtc_state, conn_state); |
| 837 | |
| 838 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 839 | } |
| 840 | |
| 841 | #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)1 |
| 842 | static u32 intel_panel_get_backlight(struct intel_connector *connector) |
| 843 | { |
| 844 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 845 | struct intel_panel *panel = &connector->panel; |
| 846 | u32 val = 0; |
| 847 | |
| 848 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 849 | |
| 850 | if (panel->backlight.enabled) |
| 851 | val = panel->backlight.funcs->get(connector, intel_connector_get_pipe(connector)); |
| 852 | |
| 853 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 854 | |
| 855 | drm_dbg_kms(&dev_priv->drm, "get backlight PWM = %d\n", val)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "get backlight PWM = %d\n" , val); |
| 856 | return val; |
| 857 | } |
| 858 | |
| 859 | /* Scale user_level in range [0..user_max] to [hw_min..hw_max]. */ |
| 860 | static u32 scale_user_to_hw(struct intel_connector *connector, |
| 861 | u32 user_level, u32 user_max) |
| 862 | { |
| 863 | struct intel_panel *panel = &connector->panel; |
| 864 | |
| 865 | return scale(user_level, 0, user_max, |
| 866 | panel->backlight.min, panel->backlight.max); |
| 867 | } |
| 868 | |
| 869 | /* set backlight brightness to level in range [0..max], scaling wrt hw min */ |
| 870 | static void intel_panel_set_backlight(const struct drm_connector_state *conn_state, |
| 871 | u32 user_level, u32 user_max) |
| 872 | { |
| 873 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 874 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 875 | struct intel_panel *panel = &connector->panel; |
| 876 | u32 hw_level; |
| 877 | |
| 878 | if (!panel->backlight.present) |
| 879 | return; |
| 880 | |
| 881 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 882 | |
| 883 | drm_WARN_ON(&dev_priv->drm, panel->backlight.max == 0)({ int __ret = !!((panel->backlight.max == 0)); if (__ret) printf("%s %s: " "%s", dev_driver_string(((&dev_priv-> drm))->dev), "", "drm_WARN_ON(" "panel->backlight.max == 0" ")"); __builtin_expect(!!(__ret), 0); }); |
| 884 | |
| 885 | hw_level = scale_user_to_hw(connector, user_level, user_max); |
| 886 | panel->backlight.level = hw_level; |
| 887 | |
| 888 | if (panel->backlight.enabled) |
| 889 | intel_panel_actually_set_backlight(conn_state, hw_level); |
| 890 | |
| 891 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 892 | } |
| 893 | |
| 894 | static int intel_backlight_device_update_status(struct backlight_device *bd) |
| 895 | { |
| 896 | struct intel_connector *connector = bl_get_data(bd); |
| 897 | struct intel_panel *panel = &connector->panel; |
| 898 | struct drm_device *dev = connector->base.dev; |
| 899 | |
| 900 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL((void *)0)); |
| 901 | DRM_DEBUG_KMS("updating intel_backlight, brightness=%d/%d\n",___drm_dbg(((void *)0), DRM_UT_KMS, "updating intel_backlight, brightness=%d/%d\n" , bd->props.brightness, bd->props.max_brightness) |
| 902 | bd->props.brightness, bd->props.max_brightness)___drm_dbg(((void *)0), DRM_UT_KMS, "updating intel_backlight, brightness=%d/%d\n" , bd->props.brightness, bd->props.max_brightness); |
| 903 | intel_panel_set_backlight(connector->base.state, bd->props.brightness, |
| 904 | bd->props.max_brightness); |
| 905 | |
| 906 | /* |
| 907 | * Allow flipping bl_power as a sub-state of enabled. Sadly the |
| 908 | * backlight class device does not make it easy to differentiate |
| 909 | * between callbacks for brightness and bl_power, so our backlight_power |
| 910 | * callback needs to take this into account. |
| 911 | */ |
| 912 | if (panel->backlight.enabled) { |
| 913 | if (panel->backlight.power) { |
| 914 | bool_Bool enable = bd->props.power == FB_BLANK_UNBLANK0 && |
| 915 | bd->props.brightness != 0; |
| 916 | panel->backlight.power(connector, enable); |
| 917 | } |
| 918 | } else { |
| 919 | bd->props.power = FB_BLANK_POWERDOWN4; |
| 920 | } |
| 921 | |
| 922 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
| 923 | return 0; |
| 924 | } |
| 925 | |
| 926 | static int intel_backlight_device_get_brightness(struct backlight_device *bd) |
| 927 | { |
| 928 | struct intel_connector *connector = bl_get_data(bd); |
| 929 | struct drm_device *dev = connector->base.dev; |
| 930 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(dev); |
| 931 | intel_wakeref_t wakeref; |
| 932 | int ret = 0; |
| 933 | |
| 934 | with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref)for ((wakeref) = intel_runtime_pm_get(&dev_priv->runtime_pm ); (wakeref); intel_runtime_pm_put((&dev_priv->runtime_pm ), (wakeref)), (wakeref) = 0) { |
| 935 | u32 hw_level; |
| 936 | |
| 937 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL((void *)0)); |
| 938 | |
| 939 | hw_level = intel_panel_get_backlight(connector); |
| 940 | ret = scale_hw_to_user(connector, |
| 941 | hw_level, bd->props.max_brightness); |
| 942 | |
| 943 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
| 944 | } |
| 945 | |
| 946 | return ret; |
| 947 | } |
| 948 | |
| 949 | static const struct backlight_ops intel_backlight_device_ops = { |
| 950 | .update_status = intel_backlight_device_update_status, |
| 951 | .get_brightness = intel_backlight_device_get_brightness, |
| 952 | }; |
| 953 | |
| 954 | int intel_backlight_device_register(struct intel_connector *connector) |
| 955 | { |
| 956 | struct drm_i915_privateinteldrm_softc *i915 = to_i915(connector->base.dev); |
| 957 | struct intel_panel *panel = &connector->panel; |
| 958 | struct backlight_properties props; |
| 959 | struct backlight_device *bd; |
| 960 | const char *name; |
| 961 | int ret = 0; |
| 962 | |
| 963 | if (WARN_ON(panel->backlight.device)({ int __ret = !!(panel->backlight.device); if (__ret) printf ("WARNING %s failed at %s:%d\n", "panel->backlight.device" , "/usr/src/sys/dev/pci/drm/i915/display/intel_backlight.c", 963 ); __builtin_expect(!!(__ret), 0); })) |
| 964 | return -ENODEV19; |
| 965 | |
| 966 | if (!panel->backlight.present) |
| 967 | return 0; |
| 968 | |
| 969 | WARN_ON(panel->backlight.max == 0)({ int __ret = !!(panel->backlight.max == 0); if (__ret) printf ("WARNING %s failed at %s:%d\n", "panel->backlight.max == 0" , "/usr/src/sys/dev/pci/drm/i915/display/intel_backlight.c", 969 ); __builtin_expect(!!(__ret), 0); }); |
| 970 | |
| 971 | if (!acpi_video_backlight_use_native()) { |
| 972 | drm_info(&i915->drm, "Skipping intel_backlight registration\n")do { } while(0); |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | memset(&props, 0, sizeof(props))__builtin_memset((&props), (0), (sizeof(props))); |
| 977 | props.type = BACKLIGHT_RAW0; |
| 978 | |
| 979 | /* |
| 980 | * Note: Everything should work even if the backlight device max |
| 981 | * presented to the userspace is arbitrarily chosen. |
| 982 | */ |
| 983 | props.max_brightness = panel->backlight.max; |
| 984 | props.brightness = scale_hw_to_user(connector, |
| 985 | panel->backlight.level, |
| 986 | props.max_brightness); |
| 987 | |
| 988 | if (panel->backlight.enabled) |
| 989 | props.power = FB_BLANK_UNBLANK0; |
| 990 | else |
| 991 | props.power = FB_BLANK_POWERDOWN4; |
| 992 | |
| 993 | name = kstrdup("intel_backlight", GFP_KERNEL(0x0001 | 0x0004)); |
| 994 | if (!name) |
| 995 | return -ENOMEM12; |
| 996 | |
| 997 | bd = backlight_device_get_by_name(name); |
| 998 | if (bd) { |
| 999 | #ifdef __linux__ |
| 1000 | put_device(&bd->dev); |
| 1001 | #endif |
| 1002 | /* |
| 1003 | * Using the same name independent of the drm device or connector |
| 1004 | * prevents registration of multiple backlight devices in the |
| 1005 | * driver. However, we need to use the default name for backward |
| 1006 | * compatibility. Use unique names for subsequent backlight devices as a |
| 1007 | * fallback when the default name already exists. |
| 1008 | */ |
| 1009 | kfree(name); |
| 1010 | name = kasprintf(GFP_KERNEL(0x0001 | 0x0004), "card%d-%s-backlight", |
| 1011 | i915->drm.primary->index, connector->base.name); |
| 1012 | if (!name) |
| 1013 | return -ENOMEM12; |
| 1014 | } |
| 1015 | bd = backlight_device_register(name, connector->base.kdev, connector, |
| 1016 | &intel_backlight_device_ops, &props); |
| 1017 | |
| 1018 | if (IS_ERR(bd)) { |
| 1019 | drm_err(&i915->drm,printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , connector ->base.base.id, connector->base.name, name, PTR_ERR(bd) ) |
| 1020 | "[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n",printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , connector ->base.base.id, connector->base.name, name, PTR_ERR(bd) ) |
| 1021 | connector->base.base.id, connector->base.name, name, PTR_ERR(bd))printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , connector ->base.base.id, connector->base.name, name, PTR_ERR(bd) ); |
| 1022 | ret = PTR_ERR(bd); |
| 1023 | goto out; |
| 1024 | } |
| 1025 | |
| 1026 | panel->backlight.device = bd; |
| 1027 | |
| 1028 | drm_dbg_kms(&i915->drm,__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] backlight device %s registered\n" , connector->base.base.id, connector->base.name, name) |
| 1029 | "[CONNECTOR:%d:%s] backlight device %s registered\n",__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] backlight device %s registered\n" , connector->base.base.id, connector->base.name, name) |
| 1030 | connector->base.base.id, connector->base.name, name)__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] backlight device %s registered\n" , connector->base.base.id, connector->base.name, name); |
| 1031 | |
| 1032 | out: |
| 1033 | kfree(name); |
| 1034 | |
| 1035 | return ret; |
| 1036 | } |
| 1037 | |
| 1038 | void intel_backlight_device_unregister(struct intel_connector *connector) |
| 1039 | { |
| 1040 | struct intel_panel *panel = &connector->panel; |
| 1041 | |
| 1042 | if (panel->backlight.device) { |
| 1043 | backlight_device_unregister(panel->backlight.device); |
| 1044 | panel->backlight.device = NULL((void *)0); |
| 1045 | } |
| 1046 | } |
| 1047 | #endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */ |
| 1048 | |
| 1049 | /* |
| 1050 | * CNP: PWM clock frequency is 19.2 MHz or 24 MHz. |
| 1051 | * PWM increment = 1 |
| 1052 | */ |
| 1053 | static u32 cnp_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1054 | { |
| 1055 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1056 | |
| 1057 | return DIV_ROUND_CLOSEST(KHz(RUNTIME_INFO(dev_priv)->rawclk_freq),((((1000 * ((&(dev_priv)->__runtime)->rawclk_freq)) ) + ((pwm_freq_hz) / 2)) / (pwm_freq_hz)) |
| 1058 | pwm_freq_hz)((((1000 * ((&(dev_priv)->__runtime)->rawclk_freq)) ) + ((pwm_freq_hz) / 2)) / (pwm_freq_hz)); |
| 1059 | } |
| 1060 | |
| 1061 | /* |
| 1062 | * BXT: PWM clock frequency = 19.2 MHz. |
| 1063 | */ |
| 1064 | static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1065 | { |
| 1066 | return DIV_ROUND_CLOSEST(KHz(19200), pwm_freq_hz)((((1000 * (19200))) + ((pwm_freq_hz) / 2)) / (pwm_freq_hz)); |
| 1067 | } |
| 1068 | |
| 1069 | /* |
| 1070 | * SPT: This value represents the period of the PWM stream in clock periods |
| 1071 | * multiplied by 16 (default increment) or 128 (alternate increment selected in |
| 1072 | * SCHICKEN_1 bit 0). PWM clock is 24 MHz. |
| 1073 | */ |
| 1074 | static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1075 | { |
| 1076 | struct intel_panel *panel = &connector->panel; |
| 1077 | u32 mul; |
| 1078 | |
| 1079 | if (panel->backlight.alternate_pwm_increment) |
| 1080 | mul = 128; |
| 1081 | else |
| 1082 | mul = 16; |
| 1083 | |
| 1084 | return DIV_ROUND_CLOSEST(MHz(24), pwm_freq_hz * mul)((((1000 * (1000 * (24)))) + ((pwm_freq_hz * mul) / 2)) / (pwm_freq_hz * mul)); |
| 1085 | } |
| 1086 | |
| 1087 | /* |
| 1088 | * LPT: This value represents the period of the PWM stream in clock periods |
| 1089 | * multiplied by 128 (default increment) or 16 (alternate increment, selected in |
| 1090 | * LPT SOUTH_CHICKEN2 register bit 5). |
| 1091 | */ |
| 1092 | static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1093 | { |
| 1094 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1095 | struct intel_panel *panel = &connector->panel; |
| 1096 | u32 mul, clock; |
| 1097 | |
| 1098 | if (panel->backlight.alternate_pwm_increment) |
| 1099 | mul = 16; |
| 1100 | else |
| 1101 | mul = 128; |
| 1102 | |
| 1103 | if (HAS_PCH_LPT_H(dev_priv)(((dev_priv)->pch_id) == 0x8c00 || ((dev_priv)->pch_id) == 0x8c80)) |
| 1104 | clock = MHz(135)(1000 * (1000 * (135))); /* LPT:H */ |
| 1105 | else |
| 1106 | clock = MHz(24)(1000 * (1000 * (24))); /* LPT:LP */ |
| 1107 | |
| 1108 | return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul)(((clock) + ((pwm_freq_hz * mul) / 2)) / (pwm_freq_hz * mul)); |
| 1109 | } |
| 1110 | |
| 1111 | /* |
| 1112 | * ILK/SNB/IVB: This value represents the period of the PWM stream in PCH |
| 1113 | * display raw clocks multiplied by 128. |
| 1114 | */ |
| 1115 | static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1116 | { |
| 1117 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1118 | |
| 1119 | return DIV_ROUND_CLOSEST(KHz(RUNTIME_INFO(dev_priv)->rawclk_freq),((((1000 * ((&(dev_priv)->__runtime)->rawclk_freq)) ) + ((pwm_freq_hz * 128) / 2)) / (pwm_freq_hz * 128)) |
| 1120 | pwm_freq_hz * 128)((((1000 * ((&(dev_priv)->__runtime)->rawclk_freq)) ) + ((pwm_freq_hz * 128) / 2)) / (pwm_freq_hz * 128)); |
| 1121 | } |
| 1122 | |
| 1123 | /* |
| 1124 | * Gen2: This field determines the number of time base events (display core |
| 1125 | * clock frequency/32) in total for a complete cycle of modulated backlight |
| 1126 | * control. |
| 1127 | * |
| 1128 | * Gen3: A time base event equals the display core clock ([DevPNV] HRAW clock) |
| 1129 | * divided by 32. |
| 1130 | */ |
| 1131 | static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1132 | { |
| 1133 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1134 | int clock; |
| 1135 | |
| 1136 | if (IS_PINEVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_PINEVIEW)) |
| 1137 | clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq)(1000 * ((&(dev_priv)->__runtime)->rawclk_freq)); |
| 1138 | else |
| 1139 | clock = KHz(dev_priv->display.cdclk.hw.cdclk)(1000 * (dev_priv->display.cdclk.hw.cdclk)); |
| 1140 | |
| 1141 | return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 32)(((clock) + ((pwm_freq_hz * 32) / 2)) / (pwm_freq_hz * 32)); |
| 1142 | } |
| 1143 | |
| 1144 | /* |
| 1145 | * Gen4: This value represents the period of the PWM stream in display core |
| 1146 | * clocks ([DevCTG] HRAW clocks) multiplied by 128. |
| 1147 | * |
| 1148 | */ |
| 1149 | static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1150 | { |
| 1151 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1152 | int clock; |
| 1153 | |
| 1154 | if (IS_G4X(dev_priv)(IS_PLATFORM(dev_priv, INTEL_G45) || IS_PLATFORM(dev_priv, INTEL_GM45 ))) |
| 1155 | clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq)(1000 * ((&(dev_priv)->__runtime)->rawclk_freq)); |
| 1156 | else |
| 1157 | clock = KHz(dev_priv->display.cdclk.hw.cdclk)(1000 * (dev_priv->display.cdclk.hw.cdclk)); |
| 1158 | |
| 1159 | return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 128)(((clock) + ((pwm_freq_hz * 128) / 2)) / (pwm_freq_hz * 128)); |
| 1160 | } |
| 1161 | |
| 1162 | /* |
| 1163 | * VLV: This value represents the period of the PWM stream in display core |
| 1164 | * clocks ([DevCTG] 200MHz HRAW clocks) multiplied by 128 or 25MHz S0IX clocks |
| 1165 | * multiplied by 16. CHV uses a 19.2MHz S0IX clock. |
| 1166 | */ |
| 1167 | static u32 vlv_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) |
| 1168 | { |
| 1169 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1170 | int mul, clock; |
| 1171 | |
| 1172 | if ((intel_de_read(dev_priv, CBR1_VLV((const i915_reg_t){ .reg = (0x180000 + 0x70400) })) & CBR_PWM_CLOCK_MUX_SELECT(1 << 30)) == 0) { |
| 1173 | if (IS_CHERRYVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)) |
| 1174 | clock = KHz(19200)(1000 * (19200)); |
| 1175 | else |
| 1176 | clock = MHz(25)(1000 * (1000 * (25))); |
| 1177 | mul = 16; |
| 1178 | } else { |
| 1179 | clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq)(1000 * ((&(dev_priv)->__runtime)->rawclk_freq)); |
| 1180 | mul = 128; |
| 1181 | } |
| 1182 | |
| 1183 | return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul)(((clock) + ((pwm_freq_hz * mul) / 2)) / (pwm_freq_hz * mul)); |
| 1184 | } |
| 1185 | |
| 1186 | static u16 get_vbt_pwm_freq(struct intel_connector *connector) |
| 1187 | { |
| 1188 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1189 | u16 pwm_freq_hz = connector->panel.vbt.backlight.pwm_freq_hz; |
| 1190 | |
| 1191 | if (pwm_freq_hz) { |
| 1192 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "VBT defined backlight frequency %u Hz\n" , pwm_freq_hz) |
| 1193 | "VBT defined backlight frequency %u Hz\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "VBT defined backlight frequency %u Hz\n" , pwm_freq_hz) |
| 1194 | pwm_freq_hz)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "VBT defined backlight frequency %u Hz\n" , pwm_freq_hz); |
| 1195 | } else { |
| 1196 | pwm_freq_hz = 200; |
| 1197 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "default backlight frequency %u Hz\n" , pwm_freq_hz) |
| 1198 | "default backlight frequency %u Hz\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "default backlight frequency %u Hz\n" , pwm_freq_hz) |
| 1199 | pwm_freq_hz)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "default backlight frequency %u Hz\n" , pwm_freq_hz); |
| 1200 | } |
| 1201 | |
| 1202 | return pwm_freq_hz; |
| 1203 | } |
| 1204 | |
| 1205 | static u32 get_backlight_max_vbt(struct intel_connector *connector) |
| 1206 | { |
| 1207 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1208 | struct intel_panel *panel = &connector->panel; |
| 1209 | u16 pwm_freq_hz = get_vbt_pwm_freq(connector); |
| 1210 | u32 pwm; |
| 1211 | |
| 1212 | if (!panel->backlight.pwm_funcs->hz_to_pwm) { |
| 1213 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight frequency conversion not supported\n" ) |
| 1214 | "backlight frequency conversion not supported\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight frequency conversion not supported\n" ); |
| 1215 | return 0; |
| 1216 | } |
| 1217 | |
| 1218 | pwm = panel->backlight.pwm_funcs->hz_to_pwm(connector, pwm_freq_hz); |
| 1219 | if (!pwm) { |
| 1220 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight frequency conversion failed\n" ) |
| 1221 | "backlight frequency conversion failed\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "backlight frequency conversion failed\n" ); |
| 1222 | return 0; |
| 1223 | } |
| 1224 | |
| 1225 | return pwm; |
| 1226 | } |
| 1227 | |
| 1228 | /* |
| 1229 | * Note: The setup hooks can't assume pipe is set! |
| 1230 | */ |
| 1231 | static u32 get_backlight_min_vbt(struct intel_connector *connector) |
| 1232 | { |
| 1233 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1234 | struct intel_panel *panel = &connector->panel; |
| 1235 | int min; |
| 1236 | |
| 1237 | drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0)({ int __ret = !!((panel->backlight.pwm_level_max == 0)); if (__ret) printf("%s %s: " "%s", dev_driver_string(((&dev_priv ->drm))->dev), "", "drm_WARN_ON(" "panel->backlight.pwm_level_max == 0" ")"); __builtin_expect(!!(__ret), 0); }); |
| 1238 | |
| 1239 | /* |
| 1240 | * XXX: If the vbt value is 255, it makes min equal to max, which leads |
| 1241 | * to problems. There are such machines out there. Either our |
| 1242 | * interpretation is wrong or the vbt has bogus data. Or both. Safeguard |
| 1243 | * against this by letting the minimum be at most (arbitrarily chosen) |
| 1244 | * 25% of the max. |
| 1245 | */ |
| 1246 | min = clamp_t(int, connector->panel.vbt.backlight.min_brightness, 0, 64)({ int __min_a = (({ int __max_a = (connector->panel.vbt.backlight .min_brightness); int __max_b = (0); __max_a > __max_b ? __max_a : __max_b; })); int __min_b = (64); __min_a < __min_b ? __min_a : __min_b; }); |
| 1247 | if (min != connector->panel.vbt.backlight.min_brightness) { |
| 1248 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "clamping VBT min backlight %d/255 to %d/255\n" , connector->panel.vbt.backlight.min_brightness, min) |
| 1249 | "clamping VBT min backlight %d/255 to %d/255\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "clamping VBT min backlight %d/255 to %d/255\n" , connector->panel.vbt.backlight.min_brightness, min) |
| 1250 | connector->panel.vbt.backlight.min_brightness, min)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "clamping VBT min backlight %d/255 to %d/255\n" , connector->panel.vbt.backlight.min_brightness, min); |
| 1251 | } |
| 1252 | |
| 1253 | /* vbt value is a coefficient in range [0..255] */ |
| 1254 | return scale(min, 0, 255, 0, panel->backlight.pwm_level_max); |
| 1255 | } |
| 1256 | |
| 1257 | static int lpt_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1258 | { |
| 1259 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1260 | struct intel_panel *panel = &connector->panel; |
| 1261 | u32 cpu_ctl2, pch_ctl1, pch_ctl2, val; |
| 1262 | bool_Bool alt, cpu_mode; |
| 1263 | |
| 1264 | if (HAS_PCH_LPT(dev_priv)(((dev_priv)->pch_type) == PCH_LPT)) |
| 1265 | alt = intel_de_read(dev_priv, SOUTH_CHICKEN2((const i915_reg_t){ .reg = (0xc2004) })) & LPT_PWM_GRANULARITY(1 << 5); |
| 1266 | else |
| 1267 | alt = intel_de_read(dev_priv, SOUTH_CHICKEN1((const i915_reg_t){ .reg = (0xc2000) })) & SPT_PWM_GRANULARITY(1 << 0); |
| 1268 | panel->backlight.alternate_pwm_increment = alt; |
| 1269 | |
| 1270 | pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 1271 | panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY(1 << 29); |
| 1272 | |
| 1273 | pch_ctl2 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) })); |
| 1274 | panel->backlight.pwm_level_max = pch_ctl2 >> 16; |
| 1275 | |
| 1276 | cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 1277 | |
| 1278 | if (!panel->backlight.pwm_level_max) |
| 1279 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1280 | |
| 1281 | if (!panel->backlight.pwm_level_max) |
| 1282 | return -ENODEV19; |
| 1283 | |
| 1284 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1285 | |
| 1286 | panel->backlight.pwm_enabled = pch_ctl1 & BLM_PCH_PWM_ENABLE(1 << 31); |
| 1287 | |
| 1288 | cpu_mode = panel->backlight.pwm_enabled && HAS_PCH_LPT(dev_priv)(((dev_priv)->pch_type) == PCH_LPT) && |
| 1289 | !(pch_ctl1 & BLM_PCH_OVERRIDE_ENABLE(1 << 30)) && |
| 1290 | (cpu_ctl2 & BLM_PWM_ENABLE(1 << 31)); |
| 1291 | |
| 1292 | if (cpu_mode) { |
| 1293 | val = pch_get_backlight(connector, unused); |
| 1294 | |
| 1295 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "CPU backlight register was enabled, switching to PCH override\n" ) |
| 1296 | "CPU backlight register was enabled, switching to PCH override\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "CPU backlight register was enabled, switching to PCH override\n" ); |
| 1297 | |
| 1298 | /* Write converted CPU PWM value to PCH override register */ |
| 1299 | lpt_set_backlight(connector->base.state, val); |
| 1300 | intel_de_write(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) }), |
| 1301 | pch_ctl1 | BLM_PCH_OVERRIDE_ENABLE(1 << 30)); |
| 1302 | |
| 1303 | intel_de_write(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) }), |
| 1304 | cpu_ctl2 & ~BLM_PWM_ENABLE(1 << 31)); |
| 1305 | } |
| 1306 | |
| 1307 | return 0; |
| 1308 | } |
| 1309 | |
| 1310 | static int pch_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1311 | { |
| 1312 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1313 | struct intel_panel *panel = &connector->panel; |
| 1314 | u32 cpu_ctl2, pch_ctl1, pch_ctl2; |
| 1315 | |
| 1316 | pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1((const i915_reg_t){ .reg = (0xc8250) })); |
| 1317 | panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY(1 << 29); |
| 1318 | |
| 1319 | pch_ctl2 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2((const i915_reg_t){ .reg = (0xc8254) })); |
| 1320 | panel->backlight.pwm_level_max = pch_ctl2 >> 16; |
| 1321 | |
| 1322 | if (!panel->backlight.pwm_level_max) |
| 1323 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1324 | |
| 1325 | if (!panel->backlight.pwm_level_max) |
| 1326 | return -ENODEV19; |
| 1327 | |
| 1328 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1329 | |
| 1330 | cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2((const i915_reg_t){ .reg = (0x48250) })); |
| 1331 | panel->backlight.pwm_enabled = (cpu_ctl2 & BLM_PWM_ENABLE(1 << 31)) && |
| 1332 | (pch_ctl1 & BLM_PCH_PWM_ENABLE(1 << 31)); |
| 1333 | |
| 1334 | return 0; |
| 1335 | } |
| 1336 | |
| 1337 | static int i9xx_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1338 | { |
| 1339 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1340 | struct intel_panel *panel = &connector->panel; |
| 1341 | u32 ctl, val; |
| 1342 | |
| 1343 | ctl = intel_de_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })); |
| 1344 | |
| 1345 | if (DISPLAY_VER(dev_priv)((&(dev_priv)->__runtime)->display.ip.ver) == 2 || IS_I915GM(dev_priv)IS_PLATFORM(dev_priv, INTEL_I915GM) || IS_I945GM(dev_priv)IS_PLATFORM(dev_priv, INTEL_I945GM)) |
| 1346 | panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE(1 << 16); |
| 1347 | |
| 1348 | if (IS_PINEVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_PINEVIEW)) |
| 1349 | panel->backlight.active_low_pwm = ctl & BLM_POLARITY_PNV(1 << 0); |
| 1350 | |
| 1351 | panel->backlight.pwm_level_max = ctl >> 17; |
| 1352 | |
| 1353 | if (!panel->backlight.pwm_level_max) { |
| 1354 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1355 | panel->backlight.pwm_level_max >>= 1; |
| 1356 | } |
| 1357 | |
| 1358 | if (!panel->backlight.pwm_level_max) |
| 1359 | return -ENODEV19; |
| 1360 | |
| 1361 | if (panel->backlight.combination_mode) |
| 1362 | panel->backlight.pwm_level_max *= 0xff; |
| 1363 | |
| 1364 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1365 | |
| 1366 | val = i9xx_get_backlight(connector, unused); |
| 1367 | val = intel_backlight_invert_pwm_level(connector, val); |
| 1368 | val = clamp(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max)({ __typeof(val) __min_a = (({ __typeof(val) __max_a = (val); __typeof(val) __max_b = (panel->backlight.pwm_level_min); __max_a > __max_b ? __max_a : __max_b; })); __typeof(val) __min_b = (panel->backlight.pwm_level_max); __min_a < __min_b ? __min_a : __min_b; }); |
| 1369 | |
| 1370 | panel->backlight.pwm_enabled = val != 0; |
| 1371 | |
| 1372 | return 0; |
| 1373 | } |
| 1374 | |
| 1375 | static int i965_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1376 | { |
| 1377 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1378 | struct intel_panel *panel = &connector->panel; |
| 1379 | u32 ctl, ctl2; |
| 1380 | |
| 1381 | ctl2 = intel_de_read(dev_priv, BLC_PWM_CTL2((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61250) })); |
| 1382 | panel->backlight.combination_mode = ctl2 & BLM_COMBINATION_MODE(1 << 30); |
| 1383 | panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965(1 << 28); |
| 1384 | |
| 1385 | ctl = intel_de_read(dev_priv, BLC_PWM_CTL((const i915_reg_t){ .reg = (((&(dev_priv)->__info)-> display.mmio_offset) + 0x61254) })); |
| 1386 | panel->backlight.pwm_level_max = ctl >> 16; |
| 1387 | |
| 1388 | if (!panel->backlight.pwm_level_max) |
| 1389 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1390 | |
| 1391 | if (!panel->backlight.pwm_level_max) |
| 1392 | return -ENODEV19; |
| 1393 | |
| 1394 | if (panel->backlight.combination_mode) |
| 1395 | panel->backlight.pwm_level_max *= 0xff; |
| 1396 | |
| 1397 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1398 | |
| 1399 | panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE(1 << 31); |
| 1400 | |
| 1401 | return 0; |
| 1402 | } |
| 1403 | |
| 1404 | static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe) |
| 1405 | { |
| 1406 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1407 | struct intel_panel *panel = &connector->panel; |
| 1408 | u32 ctl, ctl2; |
| 1409 | |
| 1410 | if (drm_WARN_ON(&dev_priv->drm, pipe != PIPE_A && pipe != PIPE_B)({ int __ret = !!((pipe != PIPE_A && pipe != PIPE_B)) ; if (__ret) printf("%s %s: " "%s", dev_driver_string(((& dev_priv->drm))->dev), "", "drm_WARN_ON(" "pipe != PIPE_A && pipe != PIPE_B" ")"); __builtin_expect(!!(__ret), 0); })) |
| 1411 | return -ENODEV19; |
| 1412 | |
| 1413 | ctl2 = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61250)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61350)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61250)))) ) })); |
| 1414 | panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965(1 << 28); |
| 1415 | |
| 1416 | ctl = intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe)((const i915_reg_t){ .reg = ((((((&(dev_priv)->__info) ->display.mmio_offset) + 0x61254)) + (pipe) * (((((&(dev_priv )->__info)->display.mmio_offset) + 0x61354)) - ((((& (dev_priv)->__info)->display.mmio_offset) + 0x61254)))) ) })); |
| 1417 | panel->backlight.pwm_level_max = ctl >> 16; |
| 1418 | |
| 1419 | if (!panel->backlight.pwm_level_max) |
| 1420 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1421 | |
| 1422 | if (!panel->backlight.pwm_level_max) |
| 1423 | return -ENODEV19; |
| 1424 | |
| 1425 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1426 | |
| 1427 | panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE(1 << 31); |
| 1428 | |
| 1429 | return 0; |
| 1430 | } |
| 1431 | |
| 1432 | static int |
| 1433 | bxt_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1434 | { |
| 1435 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1436 | struct intel_panel *panel = &connector->panel; |
| 1437 | u32 pwm_ctl, val; |
| 1438 | |
| 1439 | panel->backlight.controller = connector->panel.vbt.backlight.controller; |
| 1440 | |
| 1441 | pwm_ctl = intel_de_read(dev_priv, |
| 1442 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 1443 | |
| 1444 | /* Controller 1 uses the utility pin. */ |
| 1445 | if (panel->backlight.controller == 1) { |
| 1446 | val = intel_de_read(dev_priv, UTIL_PIN_CTL((const i915_reg_t){ .reg = (0x48400) })); |
| 1447 | panel->backlight.util_pin_active_low = |
| 1448 | val & UTIL_PIN_POLARITY(1 << 22); |
| 1449 | } |
| 1450 | |
| 1451 | panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY(1 << 29); |
| 1452 | panel->backlight.pwm_level_max = |
| 1453 | intel_de_read(dev_priv, BXT_BLC_PWM_FREQ(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8254) + (panel->backlight .controller) * ((0xC8354) - (0xC8254)))) })); |
| 1454 | |
| 1455 | if (!panel->backlight.pwm_level_max) |
| 1456 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1457 | |
| 1458 | if (!panel->backlight.pwm_level_max) |
| 1459 | return -ENODEV19; |
| 1460 | |
| 1461 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1462 | |
| 1463 | panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE(1 << 31); |
| 1464 | |
| 1465 | return 0; |
| 1466 | } |
| 1467 | |
| 1468 | static int |
| 1469 | cnp_setup_backlight(struct intel_connector *connector, enum pipe unused) |
| 1470 | { |
| 1471 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1472 | struct intel_panel *panel = &connector->panel; |
| 1473 | u32 pwm_ctl; |
| 1474 | |
| 1475 | /* |
| 1476 | * CNP has the BXT implementation of backlight, but with only one |
| 1477 | * controller. TODO: ICP has multiple controllers but we only use |
| 1478 | * controller 0 for now. |
| 1479 | */ |
| 1480 | panel->backlight.controller = 0; |
| 1481 | |
| 1482 | pwm_ctl = intel_de_read(dev_priv, |
| 1483 | BXT_BLC_PWM_CTL(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8250) + (panel->backlight .controller) * ((0xC8350) - (0xC8250)))) })); |
| 1484 | |
| 1485 | panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY(1 << 29); |
| 1486 | panel->backlight.pwm_level_max = |
| 1487 | intel_de_read(dev_priv, BXT_BLC_PWM_FREQ(panel->backlight.controller)((const i915_reg_t){ .reg = (((0xC8254) + (panel->backlight .controller) * ((0xC8354) - (0xC8254)))) })); |
| 1488 | |
| 1489 | if (!panel->backlight.pwm_level_max) |
| 1490 | panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); |
| 1491 | |
| 1492 | if (!panel->backlight.pwm_level_max) |
| 1493 | return -ENODEV19; |
| 1494 | |
| 1495 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1496 | |
| 1497 | panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE(1 << 31); |
| 1498 | |
| 1499 | return 0; |
| 1500 | } |
| 1501 | |
| 1502 | static int ext_pwm_setup_backlight(struct intel_connector *connector, |
| 1503 | enum pipe pipe) |
| 1504 | { |
| 1505 | struct drm_device *dev = connector->base.dev; |
| 1506 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(dev); |
Value stored to 'dev_priv' during its initialization is never read | |
| 1507 | struct intel_panel *panel = &connector->panel; |
| 1508 | const char *desc; |
| 1509 | u32 level; |
| 1510 | |
| 1511 | /* Get the right PWM chip for DSI backlight according to VBT */ |
| 1512 | if (connector->panel.vbt.dsi.config->pwm_blc == PPS_BLC_PMIC0) { |
| 1513 | panel->backlight.pwm = pwm_get(dev->dev, "pwm_pmic_backlight"); |
| 1514 | desc = "PMIC"; |
| 1515 | } else { |
| 1516 | panel->backlight.pwm = pwm_get(dev->dev, "pwm_soc_backlight"); |
| 1517 | desc = "SoC"; |
| 1518 | } |
| 1519 | |
| 1520 | if (IS_ERR(panel->backlight.pwm)) { |
| 1521 | drm_err(&dev_priv->drm, "Failed to get the %s PWM chip\n",printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "Failed to get the %s PWM chip\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , desc) |
| 1522 | desc)printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "Failed to get the %s PWM chip\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , desc); |
| 1523 | panel->backlight.pwm = NULL((void *)0); |
| 1524 | return -ENODEV19; |
| 1525 | } |
| 1526 | |
| 1527 | panel->backlight.pwm_level_max = 100; /* 100% */ |
| 1528 | panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); |
| 1529 | |
| 1530 | #ifdef notyet |
| 1531 | if (pwm_is_enabled(panel->backlight.pwm)) { |
| 1532 | /* PWM is already enabled, use existing settings */ |
| 1533 | pwm_get_state(panel->backlight.pwm, &panel->backlight.pwm_state); |
| 1534 | |
| 1535 | level = pwm_get_relative_duty_cycle(&panel->backlight.pwm_state, |
| 1536 | 100); |
| 1537 | level = intel_backlight_invert_pwm_level(connector, level); |
| 1538 | panel->backlight.pwm_enabled = true1; |
| 1539 | |
| 1540 | drm_dbg_kms(&dev_priv->drm, "PWM already enabled at freq %ld, VBT freq %d, level %d\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "PWM already enabled at freq %ld, VBT freq %d, level %d\n" , 1000000000L / (unsigned long)panel->backlight.pwm_state. period, get_vbt_pwm_freq(connector), level) |
| 1541 | NSEC_PER_SEC / (unsigned long)panel->backlight.pwm_state.period,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "PWM already enabled at freq %ld, VBT freq %d, level %d\n" , 1000000000L / (unsigned long)panel->backlight.pwm_state. period, get_vbt_pwm_freq(connector), level) |
| 1542 | get_vbt_pwm_freq(connector), level)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "PWM already enabled at freq %ld, VBT freq %d, level %d\n" , 1000000000L / (unsigned long)panel->backlight.pwm_state. period, get_vbt_pwm_freq(connector), level); |
| 1543 | } else { |
| 1544 | /* Set period from VBT frequency, leave other settings at 0. */ |
| 1545 | panel->backlight.pwm_state.period = |
| 1546 | NSEC_PER_SEC1000000000L / get_vbt_pwm_freq(connector); |
| 1547 | } |
| 1548 | #else |
| 1549 | STUB()do { printf("%s: stub\n", __func__); } while(0); |
| 1550 | #endif |
| 1551 | |
| 1552 | drm_info(&dev_priv->drm, "Using %s PWM for LCD backlight control\n",do { } while(0) |
| 1553 | desc)do { } while(0); |
| 1554 | return 0; |
| 1555 | } |
| 1556 | |
| 1557 | static void intel_pwm_set_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 1558 | { |
| 1559 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 1560 | struct intel_panel *panel = &connector->panel; |
| 1561 | |
| 1562 | panel->backlight.pwm_funcs->set(conn_state, |
| 1563 | intel_backlight_invert_pwm_level(connector, level)); |
| 1564 | } |
| 1565 | |
| 1566 | static u32 intel_pwm_get_backlight(struct intel_connector *connector, enum pipe pipe) |
| 1567 | { |
| 1568 | struct intel_panel *panel = &connector->panel; |
| 1569 | |
| 1570 | return intel_backlight_invert_pwm_level(connector, |
| 1571 | panel->backlight.pwm_funcs->get(connector, pipe)); |
| 1572 | } |
| 1573 | |
| 1574 | static void intel_pwm_enable_backlight(const struct intel_crtc_state *crtc_state, |
| 1575 | const struct drm_connector_state *conn_state, u32 level) |
| 1576 | { |
| 1577 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 1578 | struct intel_panel *panel = &connector->panel; |
| 1579 | |
| 1580 | panel->backlight.pwm_funcs->enable(crtc_state, conn_state, |
| 1581 | intel_backlight_invert_pwm_level(connector, level)); |
| 1582 | } |
| 1583 | |
| 1584 | static void intel_pwm_disable_backlight(const struct drm_connector_state *conn_state, u32 level) |
| 1585 | { |
| 1586 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 1587 | struct intel_panel *panel = &connector->panel; |
| 1588 | |
| 1589 | panel->backlight.pwm_funcs->disable(conn_state, |
| 1590 | intel_backlight_invert_pwm_level(connector, level)); |
| 1591 | } |
| 1592 | |
| 1593 | static int intel_pwm_setup_backlight(struct intel_connector *connector, enum pipe pipe) |
| 1594 | { |
| 1595 | struct intel_panel *panel = &connector->panel; |
| 1596 | int ret = panel->backlight.pwm_funcs->setup(connector, pipe); |
| 1597 | |
| 1598 | if (ret < 0) |
| 1599 | return ret; |
| 1600 | |
| 1601 | panel->backlight.min = panel->backlight.pwm_level_min; |
| 1602 | panel->backlight.max = panel->backlight.pwm_level_max; |
| 1603 | panel->backlight.level = intel_pwm_get_backlight(connector, pipe); |
| 1604 | panel->backlight.enabled = panel->backlight.pwm_enabled; |
| 1605 | |
| 1606 | return 0; |
| 1607 | } |
| 1608 | |
| 1609 | void intel_backlight_update(struct intel_atomic_state *state, |
| 1610 | struct intel_encoder *encoder, |
| 1611 | const struct intel_crtc_state *crtc_state, |
| 1612 | const struct drm_connector_state *conn_state) |
| 1613 | { |
| 1614 | struct intel_connector *connector = to_intel_connector(conn_state->connector)({ const __typeof( ((struct intel_connector *)0)->base ) * __mptr = (conn_state->connector); (struct intel_connector * )( (char *)__mptr - __builtin_offsetof(struct intel_connector , base) );}); |
| 1615 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1616 | struct intel_panel *panel = &connector->panel; |
| 1617 | |
| 1618 | if (!panel->backlight.present) |
| 1619 | return; |
| 1620 | |
| 1621 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 1622 | if (!panel->backlight.enabled) |
| 1623 | __intel_backlight_enable(crtc_state, conn_state); |
| 1624 | |
| 1625 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 1626 | } |
| 1627 | |
| 1628 | int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe) |
| 1629 | { |
| 1630 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1631 | struct intel_panel *panel = &connector->panel; |
| 1632 | int ret; |
| 1633 | |
| 1634 | if (!connector->panel.vbt.backlight.present) { |
| 1635 | if (intel_has_quirk(dev_priv, QUIRK_BACKLIGHT_PRESENT)) { |
| 1636 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "no backlight present per VBT, but present per quirk\n" ) |
| 1637 | "no backlight present per VBT, but present per quirk\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "no backlight present per VBT, but present per quirk\n" ); |
| 1638 | } else { |
| 1639 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "no backlight present per VBT\n" ) |
| 1640 | "no backlight present per VBT\n")__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "no backlight present per VBT\n" ); |
| 1641 | return 0; |
| 1642 | } |
| 1643 | } |
| 1644 | |
| 1645 | /* ensure intel_panel has been initialized first */ |
| 1646 | if (drm_WARN_ON(&dev_priv->drm, !panel->backlight.funcs)({ int __ret = !!((!panel->backlight.funcs)); if (__ret) printf ("%s %s: " "%s", dev_driver_string(((&dev_priv->drm))-> dev), "", "drm_WARN_ON(" "!panel->backlight.funcs" ")"); __builtin_expect (!!(__ret), 0); })) |
| 1647 | return -ENODEV19; |
| 1648 | |
| 1649 | /* set level and max in panel struct */ |
| 1650 | mutex_lock(&dev_priv->display.backlight.lock)rw_enter_write(&dev_priv->display.backlight.lock); |
| 1651 | ret = panel->backlight.funcs->setup(connector, pipe); |
| 1652 | mutex_unlock(&dev_priv->display.backlight.lock)rw_exit_write(&dev_priv->display.backlight.lock); |
| 1653 | |
| 1654 | if (ret) { |
| 1655 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "failed to setup backlight for connector %s\n" , connector->base.name) |
| 1656 | "failed to setup backlight for connector %s\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "failed to setup backlight for connector %s\n" , connector->base.name) |
| 1657 | connector->base.name)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "failed to setup backlight for connector %s\n" , connector->base.name); |
| 1658 | return ret; |
| 1659 | } |
| 1660 | |
| 1661 | panel->backlight.present = true1; |
| 1662 | |
| 1663 | drm_dbg_kms(&dev_priv->drm,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Connector %s backlight initialized, %s, brightness %u/%u\n" , connector->base.name, str_enabled_disabled(panel->backlight .enabled), panel->backlight.level, panel->backlight.max ) |
| 1664 | "Connector %s backlight initialized, %s, brightness %u/%u\n",__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Connector %s backlight initialized, %s, brightness %u/%u\n" , connector->base.name, str_enabled_disabled(panel->backlight .enabled), panel->backlight.level, panel->backlight.max ) |
| 1665 | connector->base.name,__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Connector %s backlight initialized, %s, brightness %u/%u\n" , connector->base.name, str_enabled_disabled(panel->backlight .enabled), panel->backlight.level, panel->backlight.max ) |
| 1666 | str_enabled_disabled(panel->backlight.enabled),__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Connector %s backlight initialized, %s, brightness %u/%u\n" , connector->base.name, str_enabled_disabled(panel->backlight .enabled), panel->backlight.level, panel->backlight.max ) |
| 1667 | panel->backlight.level, panel->backlight.max)__drm_dev_dbg(((void *)0), (&dev_priv->drm) ? (&dev_priv ->drm)->dev : ((void *)0), DRM_UT_KMS, "Connector %s backlight initialized, %s, brightness %u/%u\n" , connector->base.name, str_enabled_disabled(panel->backlight .enabled), panel->backlight.level, panel->backlight.max ); |
| 1668 | |
| 1669 | return 0; |
| 1670 | } |
| 1671 | |
| 1672 | void intel_backlight_destroy(struct intel_panel *panel) |
| 1673 | { |
| 1674 | /* dispose of the pwm */ |
| 1675 | if (panel->backlight.pwm) |
| 1676 | pwm_put(panel->backlight.pwm); |
| 1677 | |
| 1678 | panel->backlight.present = false0; |
| 1679 | } |
| 1680 | |
| 1681 | static const struct intel_panel_bl_funcs bxt_pwm_funcs = { |
| 1682 | .setup = bxt_setup_backlight, |
| 1683 | .enable = bxt_enable_backlight, |
| 1684 | .disable = bxt_disable_backlight, |
| 1685 | .set = bxt_set_backlight, |
| 1686 | .get = bxt_get_backlight, |
| 1687 | .hz_to_pwm = bxt_hz_to_pwm, |
| 1688 | }; |
| 1689 | |
| 1690 | static const struct intel_panel_bl_funcs cnp_pwm_funcs = { |
| 1691 | .setup = cnp_setup_backlight, |
| 1692 | .enable = cnp_enable_backlight, |
| 1693 | .disable = cnp_disable_backlight, |
| 1694 | .set = bxt_set_backlight, |
| 1695 | .get = bxt_get_backlight, |
| 1696 | .hz_to_pwm = cnp_hz_to_pwm, |
| 1697 | }; |
| 1698 | |
| 1699 | static const struct intel_panel_bl_funcs lpt_pwm_funcs = { |
| 1700 | .setup = lpt_setup_backlight, |
| 1701 | .enable = lpt_enable_backlight, |
| 1702 | .disable = lpt_disable_backlight, |
| 1703 | .set = lpt_set_backlight, |
| 1704 | .get = lpt_get_backlight, |
| 1705 | .hz_to_pwm = lpt_hz_to_pwm, |
| 1706 | }; |
| 1707 | |
| 1708 | static const struct intel_panel_bl_funcs spt_pwm_funcs = { |
| 1709 | .setup = lpt_setup_backlight, |
| 1710 | .enable = lpt_enable_backlight, |
| 1711 | .disable = lpt_disable_backlight, |
| 1712 | .set = lpt_set_backlight, |
| 1713 | .get = lpt_get_backlight, |
| 1714 | .hz_to_pwm = spt_hz_to_pwm, |
| 1715 | }; |
| 1716 | |
| 1717 | static const struct intel_panel_bl_funcs pch_pwm_funcs = { |
| 1718 | .setup = pch_setup_backlight, |
| 1719 | .enable = pch_enable_backlight, |
| 1720 | .disable = pch_disable_backlight, |
| 1721 | .set = pch_set_backlight, |
| 1722 | .get = pch_get_backlight, |
| 1723 | .hz_to_pwm = pch_hz_to_pwm, |
| 1724 | }; |
| 1725 | |
| 1726 | static const struct intel_panel_bl_funcs ext_pwm_funcs = { |
| 1727 | .setup = ext_pwm_setup_backlight, |
| 1728 | .enable = ext_pwm_enable_backlight, |
| 1729 | .disable = ext_pwm_disable_backlight, |
| 1730 | .set = ext_pwm_set_backlight, |
| 1731 | .get = ext_pwm_get_backlight, |
| 1732 | }; |
| 1733 | |
| 1734 | static const struct intel_panel_bl_funcs vlv_pwm_funcs = { |
| 1735 | .setup = vlv_setup_backlight, |
| 1736 | .enable = vlv_enable_backlight, |
| 1737 | .disable = vlv_disable_backlight, |
| 1738 | .set = vlv_set_backlight, |
| 1739 | .get = vlv_get_backlight, |
| 1740 | .hz_to_pwm = vlv_hz_to_pwm, |
| 1741 | }; |
| 1742 | |
| 1743 | static const struct intel_panel_bl_funcs i965_pwm_funcs = { |
| 1744 | .setup = i965_setup_backlight, |
| 1745 | .enable = i965_enable_backlight, |
| 1746 | .disable = i965_disable_backlight, |
| 1747 | .set = i9xx_set_backlight, |
| 1748 | .get = i9xx_get_backlight, |
| 1749 | .hz_to_pwm = i965_hz_to_pwm, |
| 1750 | }; |
| 1751 | |
| 1752 | static const struct intel_panel_bl_funcs i9xx_pwm_funcs = { |
| 1753 | .setup = i9xx_setup_backlight, |
| 1754 | .enable = i9xx_enable_backlight, |
| 1755 | .disable = i9xx_disable_backlight, |
| 1756 | .set = i9xx_set_backlight, |
| 1757 | .get = i9xx_get_backlight, |
| 1758 | .hz_to_pwm = i9xx_hz_to_pwm, |
| 1759 | }; |
| 1760 | |
| 1761 | static const struct intel_panel_bl_funcs pwm_bl_funcs = { |
| 1762 | .setup = intel_pwm_setup_backlight, |
| 1763 | .enable = intel_pwm_enable_backlight, |
| 1764 | .disable = intel_pwm_disable_backlight, |
| 1765 | .set = intel_pwm_set_backlight, |
| 1766 | .get = intel_pwm_get_backlight, |
| 1767 | }; |
| 1768 | |
| 1769 | /* Set up chip specific backlight functions */ |
| 1770 | void intel_backlight_init_funcs(struct intel_panel *panel) |
| 1771 | { |
| 1772 | struct intel_connector *connector = |
| 1773 | container_of(panel, struct intel_connector, panel)({ const __typeof( ((struct intel_connector *)0)->panel ) * __mptr = (panel); (struct intel_connector *)( (char *)__mptr - __builtin_offsetof(struct intel_connector, panel) );}); |
| 1774 | struct drm_i915_privateinteldrm_softc *dev_priv = to_i915(connector->base.dev); |
| 1775 | |
| 1776 | if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI16 && |
| 1777 | intel_dsi_dcs_init_backlight_funcs(connector) == 0) |
| 1778 | return; |
| 1779 | |
| 1780 | if (IS_GEMINILAKE(dev_priv)IS_PLATFORM(dev_priv, INTEL_GEMINILAKE) || IS_BROXTON(dev_priv)IS_PLATFORM(dev_priv, INTEL_BROXTON)) { |
| 1781 | panel->backlight.pwm_funcs = &bxt_pwm_funcs; |
| 1782 | } else if (INTEL_PCH_TYPE(dev_priv)((dev_priv)->pch_type) >= PCH_CNP) { |
| 1783 | panel->backlight.pwm_funcs = &cnp_pwm_funcs; |
| 1784 | } else if (INTEL_PCH_TYPE(dev_priv)((dev_priv)->pch_type) >= PCH_LPT) { |
| 1785 | if (HAS_PCH_LPT(dev_priv)(((dev_priv)->pch_type) == PCH_LPT)) |
| 1786 | panel->backlight.pwm_funcs = &lpt_pwm_funcs; |
| 1787 | else |
| 1788 | panel->backlight.pwm_funcs = &spt_pwm_funcs; |
| 1789 | } else if (HAS_PCH_SPLIT(dev_priv)(((dev_priv)->pch_type) != PCH_NONE)) { |
| 1790 | panel->backlight.pwm_funcs = &pch_pwm_funcs; |
| 1791 | } else if (IS_VALLEYVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW) || IS_CHERRYVIEW(dev_priv)IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)) { |
| 1792 | if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI16) { |
| 1793 | panel->backlight.pwm_funcs = &ext_pwm_funcs; |
| 1794 | } else { |
| 1795 | panel->backlight.pwm_funcs = &vlv_pwm_funcs; |
| 1796 | } |
| 1797 | } else if (DISPLAY_VER(dev_priv)((&(dev_priv)->__runtime)->display.ip.ver) == 4) { |
| 1798 | panel->backlight.pwm_funcs = &i965_pwm_funcs; |
| 1799 | } else { |
| 1800 | panel->backlight.pwm_funcs = &i9xx_pwm_funcs; |
| 1801 | } |
| 1802 | |
| 1803 | if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP14) { |
| 1804 | if (intel_dp_aux_init_backlight_funcs(connector) == 0) |
| 1805 | return; |
| 1806 | |
| 1807 | if (!intel_has_quirk(dev_priv, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK)) |
| 1808 | connector->panel.backlight.power = intel_pps_backlight_power; |
| 1809 | } |
| 1810 | |
| 1811 | /* We're using a standard PWM backlight interface */ |
| 1812 | panel->backlight.funcs = &pwm_bl_funcs; |
| 1813 | } |