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author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-06-15 16:59:31 +0300 |
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committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-11-02 18:59:43 +0300 |
commit | 92bab9142456c37d14a0de212b272cdd94846c6d (patch) | |
tree | 7904f04e1c2a959f4bac48dd7517cfbfc8b28e2a /drivers/gpu/drm | |
parent | 9a5c1586e8098a19cbf3e7f5d6fa1d1d3c1efa13 (diff) | |
download | linux-stable-92bab9142456c37d14a0de212b272cdd94846c6d.tar.gz linux-stable-92bab9142456c37d14a0de212b272cdd94846c6d.tar.bz2 linux-stable-92bab9142456c37d14a0de212b272cdd94846c6d.zip |
drm/msm: less magic numbers in msm_mdss_enable
Replace magic register writes in msm_mdss_enable() with version that
contains less magic and more variable names that can be traced back to
the dpu_hw_catalog or the downstream dtsi files.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/489578/
Link: https://lore.kernel.org/r/20220615135935.87381-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r-- | drivers/gpu/drm/msm/msm_mdss.c | 80 |
1 files changed, 72 insertions, 8 deletions
diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c index e13c5c12b775..6a4549ef34d4 100644 --- a/drivers/gpu/drm/msm/msm_mdss.c +++ b/drivers/gpu/drm/msm/msm_mdss.c @@ -22,6 +22,7 @@ #define HW_REV 0x0 #define HW_INTR_STATUS 0x0010 +#define UBWC_DEC_HW_VERSION 0x58 #define UBWC_STATIC 0x144 #define UBWC_CTRL_2 0x150 #define UBWC_PREDICTION_MODE 0x154 @@ -174,9 +175,63 @@ static int _msm_mdss_irq_domain_add(struct msm_mdss *msm_mdss) return 0; } +#define UBWC_1_0 0x10000000 +#define UBWC_2_0 0x20000000 +#define UBWC_3_0 0x30000000 +#define UBWC_4_0 0x40000000 + +static void msm_mdss_setup_ubwc_dec_20(struct msm_mdss *msm_mdss, + u32 ubwc_static) +{ + writel_relaxed(ubwc_static, msm_mdss->mmio + UBWC_STATIC); +} + +static void msm_mdss_setup_ubwc_dec_30(struct msm_mdss *msm_mdss, + unsigned int ubwc_version, + u32 ubwc_swizzle, + u32 highest_bank_bit, + u32 macrotile_mode) +{ + u32 value = (ubwc_swizzle & 0x1) | + (highest_bank_bit & 0x3) << 4 | + (macrotile_mode & 0x1) << 12; + + if (ubwc_version == UBWC_3_0) + value |= BIT(10); + + if (ubwc_version == UBWC_1_0) + value |= BIT(8); + + writel_relaxed(value, msm_mdss->mmio + UBWC_STATIC); +} + +static void msm_mdss_setup_ubwc_dec_40(struct msm_mdss *msm_mdss, + unsigned int ubwc_version, + u32 ubwc_swizzle, + u32 ubwc_static, + u32 highest_bank_bit, + u32 macrotile_mode) +{ + u32 value = (ubwc_swizzle & 0x7) | + (ubwc_static & 0x1) << 3 | + (highest_bank_bit & 0x7) << 4 | + (macrotile_mode & 0x1) << 12; + + writel_relaxed(value, msm_mdss->mmio + UBWC_STATIC); + + if (ubwc_version == UBWC_3_0) { + writel_relaxed(1, msm_mdss->mmio + UBWC_CTRL_2); + writel_relaxed(0, msm_mdss->mmio + UBWC_PREDICTION_MODE); + } else { + writel_relaxed(2, msm_mdss->mmio + UBWC_CTRL_2); + writel_relaxed(1, msm_mdss->mmio + UBWC_PREDICTION_MODE); + } +} + static int msm_mdss_enable(struct msm_mdss *msm_mdss) { int ret; + u32 hw_rev; /* * Several components have AXI clocks that can only be turned on if @@ -198,26 +253,35 @@ static int msm_mdss_enable(struct msm_mdss *msm_mdss) if (msm_mdss->is_mdp5) return 0; + hw_rev = readl_relaxed(msm_mdss->mmio + HW_REV); + dev_dbg(msm_mdss->dev, "HW_REV: 0x%x\n", hw_rev); + dev_dbg(msm_mdss->dev, "UBWC_DEC_HW_VERSION: 0x%x\n", + readl_relaxed(msm_mdss->mmio + UBWC_DEC_HW_VERSION)); + /* * ubwc config is part of the "mdss" region which is not accessible * from the rest of the driver. hardcode known configurations here + * + * Decoder version can be read from the UBWC_DEC_HW_VERSION reg, + * UBWC_n and the rest of params comes from hw_catalog. + * Unforunately this driver can not access hw catalog, so we have to + * hardcode them here. */ - switch (readl_relaxed(msm_mdss->mmio + HW_REV)) { + switch (hw_rev) { case DPU_HW_VER_500: case DPU_HW_VER_501: - writel_relaxed(0x420, msm_mdss->mmio + UBWC_STATIC); + msm_mdss_setup_ubwc_dec_30(msm_mdss, UBWC_3_0, 0, 2, 0); break; case DPU_HW_VER_600: - /* TODO: 0x102e for LP_DDR4 */ - writel_relaxed(0x103e, msm_mdss->mmio + UBWC_STATIC); - writel_relaxed(2, msm_mdss->mmio + UBWC_CTRL_2); - writel_relaxed(1, msm_mdss->mmio + UBWC_PREDICTION_MODE); + /* TODO: highest_bank_bit = 2 for LP_DDR4 */ + msm_mdss_setup_ubwc_dec_40(msm_mdss, UBWC_4_0, 6, 1, 3, 1); break; case DPU_HW_VER_620: - writel_relaxed(0x1e, msm_mdss->mmio + UBWC_STATIC); + /* UBWC_2_0 */ + msm_mdss_setup_ubwc_dec_20(msm_mdss, 0x1e); break; case DPU_HW_VER_720: - writel_relaxed(0x101e, msm_mdss->mmio + UBWC_STATIC); + msm_mdss_setup_ubwc_dec_40(msm_mdss, UBWC_3_0, 6, 1, 1, 1); break; } |