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| author | Gil <gilliu@google.com> | 2022-05-23 17:58:50 +0800 |
|---|---|---|
| committer | Gil Liu <gilliu@google.com> | 2022-05-25 06:36:07 +0000 |
| commit | d18e5309e408571df00110316cb128478614349a (patch) | |
| tree | acba4ada0afaf31e314719f05b273197c4b93fd7 /display | |
| parent | a1d9f718cdea3f492c47def3e795810dae8d7b43 (diff) | |
| download | bluejay-d18e5309e408571df00110316cb128478614349a.tar.gz | |
s6e3fc3_6a: add update lhbm gamma function
Bug: 232857978
Test: Check LHBM function and log pass
Change-Id: Ibef19e5a7fd950252dcb2d53939ca60f570f8dc9
Diffstat (limited to 'display')
| -rw-r--r-- | display/panel-samsung-s6e3fc3_6a.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/display/panel-samsung-s6e3fc3_6a.c b/display/panel-samsung-s6e3fc3_6a.c index cb2e184..3476cbc 100644 --- a/display/panel-samsung-s6e3fc3_6a.c +++ b/display/panel-samsung-s6e3fc3_6a.c @@ -242,6 +242,47 @@ static void s6e3fc3_6a_set_nolp_mode(struct exynos_panel *ctx, } #define S6E3FC3_LOCAL_HBM_GAMMA_CMD_SIZE 6 +static void s6e3fc3_6a_update_lhbm_gamma(struct exynos_panel *ctx) +{ + /* ratio provided by HW for update the LHBM gamma. + * ratio must be a integer due to kernel didn't support floating. + * ratio original value R: 1.076923077, G: 1.061566485, B: 1.065269461. + * ratio cannot exceed u32 max 4294967296. + * R gamma hex from last 16bit from gamma_cmd[1] combine with gamma_cmd[3] + * G gamma hex from first 16bit from gamma_cmd[2] combine with gamma_cmd[4] + * B gamma hex from last 16bit from gamma_cmd[2] combine with gamma_cmd[5] + */ + u8 *gamma_cmd = ctx->hbm.local_hbm.gamma_cmd; + const u32 rgb_ratio[3] = {1076923077, 1061566485, 1065269461}; + const u8 rgb_index[3][2] = {{1, 3}, {2, 4}, {2, 5}}; + u8 new_gamma_cmd[S6E3FC3_LOCAL_HBM_GAMMA_CMD_SIZE] = {0}; + u64 tmp; + int i; + u16 mask, shift; + dev_info(ctx->dev, "%s: gamma_cmd(%02x %02x %02x %02x %02x)\n", __func__, + gamma_cmd[1], gamma_cmd[2], gamma_cmd[3], gamma_cmd[4], gamma_cmd[5]); + for (i = 0; i < ARRAY_SIZE(rgb_ratio); i++) { + if (i % 2) { + mask = 0xf0; + shift = 4; + } else { + mask = 0x0f; + shift = 0; + } + tmp = ((gamma_cmd[rgb_index[i][0]] & mask) >> shift) << 8 | gamma_cmd[rgb_index[i][1]]; + dev_dbg(ctx->dev, "%s: lhbm_gamma[%d] = %llu\n", __func__, i, tmp); + + /* Round off and revert to original gamma value */ + tmp = (tmp * rgb_ratio[i] + 500000000)/1000000000; + dev_dbg(ctx->dev, "%s: new lhbm_gamma[%d] = %llu\n", __func__, i, tmp); + new_gamma_cmd[rgb_index[i][0]] |= ((tmp & 0xff00) >> 8) << shift; + new_gamma_cmd[rgb_index[i][1]] |= tmp & 0xff; + } + memcpy(&gamma_cmd[1], &new_gamma_cmd[1], S6E3FC3_LOCAL_HBM_GAMMA_CMD_SIZE - 1); + dev_info(ctx->dev, "%s: new_gamma_cmd(%02x %02x %02x %02x %02x)\n", __func__, + gamma_cmd[1], gamma_cmd[2], gamma_cmd[3], gamma_cmd[4], gamma_cmd[5]); +} + static int s6e3fc3_6a_lhbm_gamma_read(struct exynos_panel *ctx) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); @@ -264,6 +305,7 @@ static int s6e3fc3_6a_lhbm_gamma_read(struct exynos_panel *ctx) EXYNOS_DCS_WRITE_SEQ(ctx, 0xB0, 0x00, 0x28, 0xF2); /* global para*/ EXYNOS_DCS_WRITE_SEQ(ctx, 0xF2, 0xC4); /* 8 bit */ EXYNOS_DCS_WRITE_TABLE(ctx, test_key_off_f0); + s6e3fc3_6a_update_lhbm_gamma(ctx); return ret; } |