54  * struct mtk_disp_gamma - Display Gamma driver structure
69 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_clk_enable()  local
71 	return clk_prepare_enable(gamma->clk);  in mtk_gamma_clk_enable()
76 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_clk_disable()  local
78 	clk_disable_unprepare(gamma->clk);  in mtk_gamma_clk_disable()
83 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_get_lut_size()  local
85 	if (gamma && gamma->data)  in mtk_gamma_get_lut_size()
86 		return gamma->data->lut_size;  in mtk_gamma_get_lut_size()
118 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_set()  local
119 	void __iomem *lut0_base = gamma->regs + DISP_GAMMA_LUT;  in mtk_gamma_set()
120 	void __iomem *lut1_base = gamma->regs + DISP_GAMMA_LUT1;  in mtk_gamma_set()
122 	u8 lut_bits = gamma->data->lut_bits;  in mtk_gamma_set()
127 	/* If there's no gamma lut there's nothing to do here. */  in mtk_gamma_set()
131 	num_lut_banks = gamma->data->lut_size / gamma->data->lut_bank_size;  in mtk_gamma_set()
139 		/* Switch gamma bank and set data mode before writing LUT */  in mtk_gamma_set()
143 			writel(lbank_val, gamma->regs + DISP_GAMMA_BANK);  in mtk_gamma_set()
146 		for (i = 0; i < gamma->data->lut_bank_size; i++) {  in mtk_gamma_set()
147 			int n = cur_bank * gamma->data->lut_bank_size + i;  in mtk_gamma_set()
154 			if (!gamma->data->lut_diff || (i % 2 == 0)) {  in mtk_gamma_set()
190 	cfg_val = readl(gamma->regs + DISP_GAMMA_CFG);  in mtk_gamma_set()
192 	if (!gamma->data->has_dither) {  in mtk_gamma_set()
194 		if (mtk_gamma_lut_is_descending(lut, gamma->data->lut_size - 1))  in mtk_gamma_set()
200 	/* Enable the gamma table */  in mtk_gamma_set()
206 	writel(cfg_val, gamma->regs + DISP_GAMMA_CFG);  in mtk_gamma_set()
213 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_config()  local
219 	mtk_ddp_write(cmdq_pkt, sz, &gamma->cmdq_reg, gamma->regs, DISP_GAMMA_SIZE);  in mtk_gamma_config()
220 	if (gamma->data && gamma->data->has_dither)  in mtk_gamma_config()
221 		mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc,  in mtk_gamma_config()
227 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_start()  local
229 	writel(GAMMA_EN, gamma->regs + DISP_GAMMA_EN);  in mtk_gamma_start()
234 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);  in mtk_gamma_stop()  local
236 	writel_relaxed(0x0, gamma->regs + DISP_GAMMA_EN);  in mtk_gamma_stop()
269 				     "failed to get gamma clk\n");  in mtk_disp_gamma_probe()
275 				     "failed to ioremap gamma\n");  in mtk_disp_gamma_probe()
320 	{ .compatible = "mediatek,mt8173-disp-gamma",
322 	{ .compatible = "mediatek,mt8183-disp-gamma",
324 	{ .compatible = "mediatek,mt8195-disp-gamma",
334 		.name	= "mediatek-disp-gamma",