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drm/mediatek: De-commonize disp_aal/disp_gamma gamma_set functions

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In preparation for adding a 12-bits gamma support for the DISP_GAMMA
IP, remove the mtk_gamma_set_common() function and move the relevant
bits in mtk_gamma_set() for DISP_GAMMA and mtk_aal_gamma_set() for
DISP_AAL: since the latter has no more support for gamma manipulation
(being moved to a different IP) in newer revisions, those functions
are about to diverge and it makes no sense to keep a common one (with
all the complications of passing common data and making exclusions
for device driver data) for just a few bits.

This commit brings no functional changes.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231012095736.100784-9-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
AngeloGioacchino Del Regno 2023-10-12 11:57:28 +02:00 • committed by Chun-Kuang Hu
parent 36e5da1377
commit a6b39cd248
1 changed files with 7 additions and 27 deletions
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34
drivers/gpu/drm/mediatek/mtk_disp_gamma.c
View file

@ -69,41 +69,28 @@ unsigned int mtk_gamma_get_lut_size(struct device *dev)
return 0;
}
void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crtc_state *state)
void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state)
{
struct mtk_disp_gamma *gamma;
struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
unsigned int i;
struct drm_color_lut *lut;
void __iomem *lut_base;
bool lut_diff;
u16 lut_size;
u32 cfg_val, word;
/* If there's no gamma lut there's nothing to do here. */
if (!state->gamma_lut)
return;
/* If we're called from AAL, dev is NULL */
gamma = dev ? dev_get_drvdata(dev) : NULL;
if (gamma && gamma->data) {
lut_diff = gamma->data->lut_diff;
lut_size = gamma->data->lut_size;
} else {
lut_diff = false;
lut_size = 512;
}
lut_base = regs + DISP_GAMMA_LUT;
lut_base = gamma->regs + DISP_GAMMA_LUT;
lut = (struct drm_color_lut *)state->gamma_lut->data;
for (i = 0; i < lut_size; i++) {
for (i = 0; i < gamma->data->lut_size; i++) {
struct drm_color_lut diff, hwlut;
hwlut.red = drm_color_lut_extract(lut[i].red, 10);
hwlut.green = drm_color_lut_extract(lut[i].green, 10);
hwlut.blue = drm_color_lut_extract(lut[i].blue, 10);
if (!lut_diff || (i % 2 == 0)) {
if (!gamma->data->lut_diff || (i % 2 == 0)) {
word = FIELD_PREP(DISP_GAMMA_LUT_10BIT_R, hwlut.red);
word |= FIELD_PREP(DISP_GAMMA_LUT_10BIT_G, hwlut.green);
word |= FIELD_PREP(DISP_GAMMA_LUT_10BIT_B, hwlut.blue);
@ -124,19 +111,12 @@ void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crt
writel(word, lut_base + i * 4);
}
cfg_val = readl(regs + DISP_GAMMA_CFG);
cfg_val = readl(gamma->regs + DISP_GAMMA_CFG);
/* Enable the gamma table */
cfg_val |= FIELD_PREP(GAMMA_LUT_EN, 1);
writel(cfg_val, regs + DISP_GAMMA_CFG);
}
void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state)
{
struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
mtk_gamma_set_common(dev, gamma->regs, state);
cfg_val = readl(gamma->regs + DISP_GAMMA_CFG);
}
void mtk_gamma_config(struct device *dev, unsigned int w,