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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-25 11:48:26 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-25 11:48:26 -0800 |
commit | 4971f090aa7f6ce5daa094ce4334f6618f93a7eb (patch) | |
tree | 45d75782b7dedbec76a3ab82d2769f7707668071 /drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | |
parent | Merge tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86 (diff) | |
parent | Merge tag 'vmwgfx-next-2018-12-13' of git://people.freedesktop.org/~thomash/linux into drm-next (diff) | |
download | linux-dev-4971f090aa7f6ce5daa094ce4334f6618f93a7eb.tar.xz linux-dev-4971f090aa7f6ce5daa094ce4334f6618f93a7eb.zip |
Merge tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"Core:
- shared fencing staging removal
- drop transactional atomic helpers and move helpers to new location
- DP/MST atomic cleanup
- Leasing cleanups and drop EXPORT_SYMBOL
- Convert drivers to atomic helpers and generic fbdev.
- removed deprecated obj_ref/unref in favour of get/put
- Improve dumb callback documentation
- MODESET_LOCK_BEGIN/END helpers
panels:
- CDTech panels, Banana Pi Panel, DLC1010GIG,
- Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
- Himax HX8357D, simulated RTSM AEMv8.
- GPD Win2 panel
- AUO G101EVN010
vgem:
- render node support
ttm:
- move global init out of drivers
- fix LRU handling for ghost objects
- Support for simultaneous submissions to multiple engines
scheduler:
- timeout/fault handling changes to help GPU recovery
- helpers for hw with preemption support
i915:
- Scaler/Watermark fixes
- DP MST + powerwell fixes
- PSR fixes
- Break long get/put shmemfs pages
- Icelake fixes
- Icelake DSI video mode enablement
- Engine workaround improvements
amdgpu:
- freesync support
- GPU reset enabled on CI, VI, SOC15 dGPUs
- ABM support in DC
- KFD support for vega12/polaris12
- SDMA paging queue on vega
- More amdkfd code sharing
- DCC scanout on GFX9
- DC kerneldoc
- Updated SMU firmware for GFX8 chips
- XGMI PSP + hive reset support
- GPU reset
- DC trace support
- Powerplay updates for newer Polaris
- Cursor plane update fast path
- kfd dma-buf support
virtio-gpu:
- add EDID support
vmwgfx:
- pageflip with damage support
nouveau:
- Initial Turing TU104/TU106 modesetting support
msm:
- a2xx gpu support for apq8060 and imx5
- a2xx gpummu support
- mdp4 display support for apq8060
- DPU fixes and cleanups
- enhanced profiling support
- debug object naming interface
- get_iova/page pinning decoupling
tegra:
- Tegra194 host1x, VIC and display support enabled
- Audio over HDMI for Tegra186 and Tegra194
exynos:
- DMA/IOMMU refactoring
- plane alpha + blend mode support
- Color format fixes for mixer driver
rcar-du:
- R8A7744 and R8A77470 support
- R8A77965 LVDS support
imx:
- fbdev emulation fix
- multi-tiled scalling fixes
- SPDX identifiers
rockchip
- dw_hdmi support
- dw-mipi-dsi + dual dsi support
- mailbox read size fix
qxl:
- fix cursor pinning
vc4:
- YUV support (scaling + cursor)
v3d:
- enable TFU (Texture Formatting Unit)
mali-dp:
- add support for linear tiled formats
sun4i:
- Display Engine 3 support
- H6 DE3 mixer 0 support
- H6 display engine support
- dw-hdmi support
- H6 HDMI phy support
- implicit fence waiting
- BGRX8888 support
meson:
- Overlay plane support
- implicit fence waiting
- HDMI 1.4 4k modes
bridge:
- i2c fixes for sii902x"
* tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
drm/amd/display: Add fast path for cursor plane updates
drm/amdgpu: Enable GPU recovery by default for CI
drm/amd/display: Fix duplicating scaling/underscan connector state
drm/amd/display: Fix unintialized max_bpc state values
Revert "drm/amd/display: Set RMX_ASPECT as default"
drm/amdgpu: Fix stub function name
drm/msm/dpu: Fix clock issue after bind failure
drm/msm/dpu: Clean up dpu_media_info.h static inline functions
drm/msm/dpu: Further cleanups for static inline functions
drm/msm/dpu: Cleanup the debugfs functions
drm/msm/dpu: Remove dpu_irq and unused functions
drm/msm: Make irq_postinstall optional
drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
drm/msm/dpu: Remove unused functions
drm/msm/dpu: Remove dpu_crtc_is_enabled()
drm/msm/dpu: Remove dpu_crtc_get_mixer_height
drm/msm/dpu: Remove dpu_dbg
drm/msm: dpu: Remove crtc_lock
drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
drm/msm: dpu: Separate crtc assignment from vblank enable
...
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_abm.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | 104 |
1 files changed, 50 insertions, 54 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c index 29294db1a96b..2a342eae80fd 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c @@ -54,7 +54,7 @@ #define MCP_DISABLE_ABM_IMMEDIATELY 255 -static unsigned int get_current_backlight_16_bit(struct dce_abm *abm_dce) +static unsigned int calculate_16_bit_backlight_from_pwm(struct dce_abm *abm_dce) { uint64_t current_backlight; uint32_t round_result; @@ -103,45 +103,21 @@ static unsigned int get_current_backlight_16_bit(struct dce_abm *abm_dce) return (uint32_t)(current_backlight); } -static void driver_set_backlight_level(struct dce_abm *abm_dce, uint32_t level) +static void driver_set_backlight_level(struct dce_abm *abm_dce, + uint32_t backlight_pwm_u16_16) { - uint32_t backlight_24bit; - uint32_t backlight_17bit; uint32_t backlight_16bit; uint32_t masked_pwm_period; - uint8_t rounding_bit; uint8_t bit_count; uint64_t active_duty_cycle; uint32_t pwm_period_bitcnt; /* - * 1. Convert 8-bit value to 17 bit U1.16 format - * (1 integer, 16 fractional bits) - */ - - /* 1.1 multiply 8 bit value by 0x10101 to get a 24 bit value, - * effectively multiplying value by 256/255 - * eg. for a level of 0xEF, backlight_24bit = 0xEF * 0x10101 = 0xEFEFEF - */ - backlight_24bit = level * 0x10101; - - /* 1.2 The upper 16 bits of the 24 bit value is the fraction, lower 8 - * used for rounding, take most significant bit of fraction for - * rounding, e.g. for 0xEFEFEF, rounding bit is 1 - */ - rounding_bit = (backlight_24bit >> 7) & 1; - - /* 1.3 Add the upper 16 bits of the 24 bit value with the rounding bit - * resulting in a 17 bit value e.g. 0xEFF0 = (0xEFEFEF >> 8) + 1 - */ - backlight_17bit = (backlight_24bit >> 8) + rounding_bit; - - /* - * 2. Find 16 bit backlight active duty cycle, where 0 <= backlight + * 1. Find 16 bit backlight active duty cycle, where 0 <= backlight * active duty cycle <= backlight period */ - /* 2.1 Apply bitmask for backlight period value based on value of BITCNT + /* 1.1 Apply bitmask for backlight period value based on value of BITCNT */ REG_GET_2(BL_PWM_PERIOD_CNTL, BL_PWM_PERIOD_BITCNT, &pwm_period_bitcnt, @@ -155,13 +131,13 @@ static void driver_set_backlight_level(struct dce_abm *abm_dce, uint32_t level) /* e.g. maskedPwmPeriod = 0x24 when bitCount is 6 */ masked_pwm_period = masked_pwm_period & ((1 << bit_count) - 1); - /* 2.2 Calculate integer active duty cycle required upper 16 bits + /* 1.2 Calculate integer active duty cycle required upper 16 bits * contain integer component, lower 16 bits contain fractional component * of active duty cycle e.g. 0x21BDC0 = 0xEFF0 * 0x24 */ - active_duty_cycle = backlight_17bit * masked_pwm_period; + active_duty_cycle = backlight_pwm_u16_16 * masked_pwm_period; - /* 2.3 Calculate 16 bit active duty cycle from integer and fractional + /* 1.3 Calculate 16 bit active duty cycle from integer and fractional * components shift by bitCount then mask 16 bits and add rounding bit * from MSB of fraction e.g. 0x86F7 = ((0x21BDC0 >> 6) & 0xFFF) + 0 */ @@ -170,23 +146,23 @@ static void driver_set_backlight_level(struct dce_abm *abm_dce, uint32_t level) backlight_16bit += (active_duty_cycle >> (bit_count - 1)) & 0x1; /* - * 3. Program register with updated value + * 2. Program register with updated value */ - /* 3.1 Lock group 2 backlight registers */ + /* 2.1 Lock group 2 backlight registers */ REG_UPDATE_2(BL_PWM_GRP1_REG_LOCK, BL_PWM_GRP1_IGNORE_MASTER_LOCK_EN, 1, BL_PWM_GRP1_REG_LOCK, 1); - // 3.2 Write new active duty cycle + // 2.2 Write new active duty cycle REG_UPDATE(BL_PWM_CNTL, BL_ACTIVE_INT_FRAC_CNT, backlight_16bit); - /* 3.3 Unlock group 2 backlight registers */ + /* 2.3 Unlock group 2 backlight registers */ REG_UPDATE(BL_PWM_GRP1_REG_LOCK, BL_PWM_GRP1_REG_LOCK, 0); - /* 5.4.4 Wait for pending bit to be cleared */ + /* 3 Wait for pending bit to be cleared */ REG_WAIT(BL_PWM_GRP1_REG_LOCK, BL_PWM_GRP1_REG_UPDATE_PENDING, 0, 1, 10000); @@ -194,16 +170,21 @@ static void driver_set_backlight_level(struct dce_abm *abm_dce, uint32_t level) static void dmcu_set_backlight_level( struct dce_abm *abm_dce, - uint32_t level, + uint32_t backlight_pwm_u16_16, uint32_t frame_ramp, uint32_t controller_id) { - unsigned int backlight_16_bit = (level * 0x10101) >> 8; - unsigned int backlight_17_bit = backlight_16_bit + - (((backlight_16_bit & 0x80) >> 7) & 1); + unsigned int backlight_8_bit = 0; uint32_t rampingBoundary = 0xFFFF; uint32_t s2; + if (backlight_pwm_u16_16 & 0x10000) + // Check for max backlight condition + backlight_8_bit = 0xFF; + else + // Take MSB of fractional part since backlight is not max + backlight_8_bit = (backlight_pwm_u16_16 >> 8) & 0xFF; + /* set ramping boundary */ REG_WRITE(MASTER_COMM_DATA_REG1, rampingBoundary); @@ -220,7 +201,7 @@ static void dmcu_set_backlight_level( 0, 1, 80000); /* setDMCUParam_BL */ - REG_UPDATE(BL1_PWM_USER_LEVEL, BL1_PWM_USER_LEVEL, backlight_17_bit); + REG_UPDATE(BL1_PWM_USER_LEVEL, BL1_PWM_USER_LEVEL, backlight_pwm_u16_16); /* write ramp */ if (controller_id == 0) @@ -237,9 +218,9 @@ static void dmcu_set_backlight_level( s2 = REG_READ(BIOS_SCRATCH_2); s2 &= ~ATOM_S2_CURRENT_BL_LEVEL_MASK; - level &= (ATOM_S2_CURRENT_BL_LEVEL_MASK >> + backlight_8_bit &= (ATOM_S2_CURRENT_BL_LEVEL_MASK >> ATOM_S2_CURRENT_BL_LEVEL_SHIFT); - s2 |= (level << ATOM_S2_CURRENT_BL_LEVEL_SHIFT); + s2 |= (backlight_8_bit << ATOM_S2_CURRENT_BL_LEVEL_SHIFT); REG_WRITE(BIOS_SCRATCH_2, s2); } @@ -247,7 +228,7 @@ static void dmcu_set_backlight_level( static void dce_abm_init(struct abm *abm) { struct dce_abm *abm_dce = TO_DCE_ABM(abm); - unsigned int backlight = get_current_backlight_16_bit(abm_dce); + unsigned int backlight = calculate_16_bit_backlight_from_pwm(abm_dce); REG_WRITE(DC_ABM1_HG_SAMPLE_RATE, 0x103); REG_WRITE(DC_ABM1_HG_SAMPLE_RATE, 0x101); @@ -284,12 +265,26 @@ static void dce_abm_init(struct abm *abm) ABM1_BL_REG_READ_MISSED_FRAME_CLEAR, 1); } -static unsigned int dce_abm_get_current_backlight_8_bit(struct abm *abm) +static unsigned int dce_abm_get_current_backlight(struct abm *abm) { struct dce_abm *abm_dce = TO_DCE_ABM(abm); unsigned int backlight = REG_READ(BL1_PWM_CURRENT_ABM_LEVEL); - return (backlight >> 8); + /* return backlight in hardware format which is unsigned 17 bits, with + * 1 bit integer and 16 bit fractional + */ + return backlight; +} + +static unsigned int dce_abm_get_target_backlight(struct abm *abm) +{ + struct dce_abm *abm_dce = TO_DCE_ABM(abm); + unsigned int backlight = REG_READ(BL1_PWM_TARGET_ABM_LEVEL); + + /* return backlight in hardware format which is unsigned 17 bits, with + * 1 bit integer and 16 bit fractional + */ + return backlight; } static bool dce_abm_set_level(struct abm *abm, uint32_t level) @@ -396,9 +391,9 @@ static bool dce_abm_init_backlight(struct abm *abm) return true; } -static bool dce_abm_set_backlight_level( +static bool dce_abm_set_backlight_level_pwm( struct abm *abm, - unsigned int backlight_level, + unsigned int backlight_pwm_u16_16, unsigned int frame_ramp, unsigned int controller_id, bool use_smooth_brightness) @@ -406,16 +401,16 @@ static bool dce_abm_set_backlight_level( struct dce_abm *abm_dce = TO_DCE_ABM(abm); DC_LOG_BACKLIGHT("New Backlight level: %d (0x%X)\n", - backlight_level, backlight_level); + backlight_pwm_u16_16, backlight_pwm_u16_16); /* If DMCU is in reset state, DMCU is uninitialized */ if (use_smooth_brightness) dmcu_set_backlight_level(abm_dce, - backlight_level, + backlight_pwm_u16_16, frame_ramp, controller_id); else - driver_set_backlight_level(abm_dce, backlight_level); + driver_set_backlight_level(abm_dce, backlight_pwm_u16_16); return true; } @@ -424,8 +419,9 @@ static const struct abm_funcs dce_funcs = { .abm_init = dce_abm_init, .set_abm_level = dce_abm_set_level, .init_backlight = dce_abm_init_backlight, - .set_backlight_level = dce_abm_set_backlight_level, - .get_current_backlight_8_bit = dce_abm_get_current_backlight_8_bit, + .set_backlight_level_pwm = dce_abm_set_backlight_level_pwm, + .get_current_backlight = dce_abm_get_current_backlight, + .get_target_backlight = dce_abm_get_target_backlight, .set_abm_immediate_disable = dce_abm_immediate_disable }; |