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21 Nov 2024 06:49:37 -0800 X-CSE-ConnectionGUID: zjaVvHccQYa1acLCnPEZaQ== X-CSE-MsgGUID: lcmbRCCCS+WM3ZEKD1KFKA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,173,1728975600"; d="scan'208";a="90202338" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa010.jf.intel.com with ESMTP; 21 Nov 2024 06:49:33 -0800 From: Arun R Murthy To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Arun R Murthy Subject: [PATCHv6 7/8] drm/i915/histogram: Histogram changes for Display 20+ Date: Thu, 21 Nov 2024 20:09:49 +0530 Message-Id: <20241121143949.748980-3-arun.r.murthy@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241121143949.748980-1-arun.r.murthy@intel.com> References: <20241121143949.748980-1-arun.r.murthy@intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" In Display 20+, new registers are added for setting index, reading histogram and writing the IET. v2: Removed duplicate code (Jani) v3: Moved histogram core changes to earlier patches (Jani/Suraj) v4: Rebased after addressing comments on patch 1 v5: Added the retry logic from patch3 and rebased the patch series v6: optimize wite_iet() (Suraj) Bspec: 68895 Signed-off-by: Arun R Murthy --- .../gpu/drm/i915/display/intel_histogram.c | 105 +++++++++++++----- .../drm/i915/display/intel_histogram_regs.h | 25 +++++ 2 files changed, 103 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_histogram.c b/drivers/gpu/drm/i915/display/intel_histogram.c index 7b27c7227a8a..475d29441612 100644 --- a/drivers/gpu/drm/i915/display/intel_histogram.c +++ b/drivers/gpu/drm/i915/display/intel_histogram.c @@ -29,6 +29,37 @@ struct intel_histogram { u32 bin_data[HISTOGRAM_BIN_COUNT]; }; +static void set_bin_index_0(struct intel_display *display, enum pipe pipe) +{ + if (DISPLAY_VER(display) >= 20) + intel_de_rmw(display, DPST_IE_INDEX(pipe), + DPST_IE_BIN_INDEX_MASK, DPST_IE_BIN_INDEX(0)); + else + intel_de_rmw(display, DPST_CTL(pipe), + DPST_CTL_BIN_REG_MASK, + DPST_CTL_BIN_REG_CLEAR); +} + +static void write_iet(struct intel_display *display, enum pipe pipe, + u32 *data) +{ + int i; + + for (i = 0; i < HISTOGRAM_IET_LENGTH; i++) { + if (DISPLAY_VER(display) >= 20) + intel_de_rmw(display, DPST_IE_BIN(pipe), + DPST_IE_BIN_DATA_MASK, + DPST_IE_BIN_DATA(data[i])); + else + intel_de_rmw(display, DPST_BIN(pipe), + DPST_BIN_DATA_MASK, + DPST_BIN_DATA(data[i])); + + drm_dbg_atomic(display->drm, "iet_lut[%d]=%x\n", + i, data[i]); + } +} + static bool intel_histogram_get_data(struct intel_crtc *intel_crtc) { struct intel_display *display = to_intel_display(intel_crtc); @@ -36,12 +67,27 @@ static bool intel_histogram_get_data(struct intel_crtc *intel_crtc) int index; u32 dpstbin; + if (DISPLAY_VER(display) >= 20) + intel_de_rmw(display, DPST_HIST_INDEX(intel_crtc->pipe), + DPST_HIST_BIN_INDEX_MASK, + DPST_HIST_BIN_INDEX(0)); + else + intel_de_rmw(display, DPST_CTL(intel_crtc->pipe), + DPST_CTL_BIN_REG_FUNC_SEL | DPST_CTL_BIN_REG_MASK, 0); + for (index = 0; index < ARRAY_SIZE(histogram->bin_data); index++) { - dpstbin = intel_de_read(display, DPST_BIN(intel_crtc->pipe)); + dpstbin = intel_de_read(display, (DISPLAY_VER(display) >= 20 ? + DPST_HIST_BIN(intel_crtc->pipe) : + DPST_BIN(intel_crtc->pipe))); if (!(dpstbin & DPST_BIN_BUSY)) { - histogram->bin_data[index] = dpstbin & DPST_BIN_DATA_MASK; - } else + histogram->bin_data[index] = dpstbin & (DISPLAY_VER(display) >= 20 ? + DPST_HIST_BIN_DATA_MASK : + DPST_BIN_DATA_MASK); + } else { + drm_err(display->drm, "Histogram bin busy, retyring\n"); + fsleep(2); return false; + } } return true; } @@ -69,8 +115,6 @@ static void intel_histogram_handle_int_work(struct work_struct *work) * Set DPST_CTL Bin Reg function select to TC * Set DPST_CTL Bin Register Index to 0 */ - intel_de_rmw(display, DPST_CTL(intel_crtc->pipe), - DPST_CTL_BIN_REG_FUNC_SEL | DPST_CTL_BIN_REG_MASK, 0); for (retry = 0; retry < HISTOGRAM_BIN_READ_RETRY_COUNT; retry++) { if (intel_histogram_get_data(intel_crtc)) { drm_property_replace_global_blob(display->drm, @@ -150,15 +194,26 @@ static int intel_histogram_enable(struct intel_crtc *intel_crtc) if (histogram->enable) return 0; - /* enable histogram, clear DPST_CTL bin reg func select to TC */ - intel_de_rmw(display, DPST_CTL(pipe), - DPST_CTL_BIN_REG_FUNC_SEL | DPST_CTL_IE_HIST_EN | - DPST_CTL_HIST_MODE | DPST_CTL_IE_TABLE_VALUE_FORMAT | - DPST_CTL_ENHANCEMENT_MODE_MASK | DPST_CTL_IE_MODI_TABLE_EN, - DPST_CTL_BIN_REG_FUNC_TC | DPST_CTL_IE_HIST_EN | - DPST_CTL_HIST_MODE_HSV | - DPST_CTL_IE_TABLE_VALUE_FORMAT_1INT_9FRAC | - DPST_CTL_EN_MULTIPLICATIVE | DPST_CTL_IE_MODI_TABLE_EN); + /* enable histogram, clear DPST_BIN reg and select TC function */ + if (DISPLAY_VER(display) >= 20) + intel_de_rmw(display, DPST_CTL(pipe), + DPST_CTL_IE_HIST_EN | + DPST_CTL_HIST_MODE, + DPST_CTL_IE_HIST_EN | + DPST_CTL_HIST_MODE_HSV); + else + /* enable histogram, clear DPST_BIN reg and select TC function */ + intel_de_rmw(display, DPST_CTL(pipe), + DPST_CTL_BIN_REG_FUNC_SEL | DPST_CTL_IE_HIST_EN | + DPST_CTL_HIST_MODE | + DPST_CTL_IE_TABLE_VALUE_FORMAT | + DPST_CTL_ENHANCEMENT_MODE_MASK | + DPST_CTL_IE_MODI_TABLE_EN, + DPST_CTL_BIN_REG_FUNC_TC | DPST_CTL_IE_HIST_EN | + DPST_CTL_HIST_MODE_HSV | + DPST_CTL_IE_TABLE_VALUE_FORMAT_1INT_9FRAC | + DPST_CTL_EN_MULTIPLICATIVE | + DPST_CTL_IE_MODI_TABLE_EN); /* Re-Visit: check if wait for one vblank is required */ drm_crtc_wait_one_vblank(&intel_crtc->base); @@ -227,7 +282,6 @@ int intel_histogram_set_iet_lut(struct intel_crtc *intel_crtc, u32 *data) struct intel_histogram *histogram = intel_crtc->histogram; struct intel_display *display = to_intel_display(intel_crtc); int pipe = intel_crtc->pipe; - int i = 0; if (!histogram) return -EINVAL; @@ -242,22 +296,19 @@ int intel_histogram_set_iet_lut(struct intel_crtc *intel_crtc, u32 *data) return -EINVAL; } - /* Set DPST_CTL Bin Reg function select to IE & wait for a vblabk */ - intel_de_rmw(display, DPST_CTL(pipe), - DPST_CTL_BIN_REG_FUNC_SEL, DPST_CTL_BIN_REG_FUNC_IE); - drm_crtc_wait_one_vblank(&intel_crtc->base); + if (DISPLAY_VER(display) < 20) { + /* Set DPST_CTL Bin Reg function select to IE & wait for a vblabk */ + intel_de_rmw(display, DPST_CTL(pipe), + DPST_CTL_BIN_REG_FUNC_SEL, + DPST_CTL_BIN_REG_FUNC_IE); - /* Set DPST_CTL Bin Register Index to 0 */ - intel_de_rmw(display, DPST_CTL(pipe), - DPST_CTL_BIN_REG_MASK, DPST_CTL_BIN_REG_CLEAR); - - for (i = 0; i < HISTOGRAM_IET_LENGTH; i++) { - intel_de_rmw(display, DPST_BIN(pipe), - DPST_BIN_DATA_MASK, data[i]); - drm_dbg_atomic(display->drm, "iet_lut[%d]=%x\n", i, data[i]); + drm_crtc_wait_one_vblank(&intel_crtc->base); } + set_bin_index_0(display, pipe); + write_iet(display, pipe, data); + return 0; } diff --git a/drivers/gpu/drm/i915/display/intel_histogram_regs.h b/drivers/gpu/drm/i915/display/intel_histogram_regs.h index 213c9f483567..3fbb9c2deaae 100644 --- a/drivers/gpu/drm/i915/display/intel_histogram_regs.h +++ b/drivers/gpu/drm/i915/display/intel_histogram_regs.h @@ -45,6 +45,31 @@ #define _DPST_BIN_B 0x491C4 #define DPST_BIN(pipe) _MMIO_PIPE(pipe, _DPST_BIN_A, _DPST_BIN_B) #define DPST_BIN_DATA_MASK REG_GENMASK(23, 0) +#define DPST_BIN_DATA(val) REG_FIELD_PREP(DPST_BIN_DATA_MASK, val) #define DPST_BIN_BUSY REG_BIT(31) +#define _DPST_HIST_INDEX_A 0x490D8 +#define _DPST_HIST_INDEX_B 0x491D8 +#define DPST_HIST_INDEX(pipe) _MMIO_PIPE(pipe, _DPST_HIST_INDEX_A, _DPST_HIST_INDEX_B) +#define DPST_HIST_BIN_INDEX_MASK REG_GENMASK(4, 0) +#define DPST_HIST_BIN_INDEX(val) REG_FIELD_PREP(DPST_HIST_BIN_INDEX_MASK, val) + +#define _DPST_HIST_BIN_A 0x490C4 +#define _DPST_HIST_BIN_B 0x491C4 +#define DPST_HIST_BIN(pipe) _MMIO_PIPE(pipe, _DPST_HIST_BIN_A, _DPST_HIST_BIN_B) +#define DPST_HIST_BIN_BUSY REG_BIT(31) +#define DPST_HIST_BIN_DATA_MASK REG_GENMASK(30, 0) + +#define _DPST_IE_BIN_A 0x490CC +#define _DPST_IE_BIN_B 0x491CC +#define DPST_IE_BIN(pipe) _MMIO_PIPE(pipe, _DPST_IE_BIN_A, _DPST_IE_BIN_B) +#define DPST_IE_BIN_DATA_MASK REG_GENMASK(9, 0) +#define DPST_IE_BIN_DATA(val) REG_FIELD_PREP(DPST_IE_BIN_DATA_MASK, val) + +#define _DPST_IE_INDEX_A 0x490DC +#define _DPST_IE_INDEX_B 0x491DC +#define DPST_IE_INDEX(pipe) _MMIO_PIPE(pipe, _DPST_IE_INDEX_A, _DPST_IE_INDEX_B) +#define DPST_IE_BIN_INDEX_MASK REG_GENMASK(6, 0) +#define DPST_IE_BIN_INDEX(val) REG_FIELD_PREP(DPST_IE_BIN_INDEX_MASK, val) + #endif /* __INTEL_HISTOGRAM_REGS_H__ */