[v7,10/10] drm: bridge: samsung-dsim: Add i.MX8MM support

Commit Message

Jagan Teki Oct. 5, 2022, 3:13 p.m. UTC

Samsung MIPI DSIM master can also be found in i.MX8MM SoC.

Add compatible and associated driver_data for it.

v7, v6:
* none

v3:
* enable DSIM_QUIRK_FIXUP_SYNC_POL quirk

v5:
* [mszyprow] rebased and adjusted to the new driver initialization
* drop quirk

v4:
* none

v3:
* enable DSIM_QUIRK_FIXUP_SYNC_POL quirk

v2:
* collect Laurent r-b

v1:
* none

Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Marek Szyprowski <[e-mail]>
Signed-off-by: Jagan Teki <[e-mail]>
---
 drivers/gpu/drm/bridge/samsung-dsim.c | 45 +++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Comments

Marek Vasut Oct. 15, 2022, 9:30 p.m. UTC | #1

On 10/5/22 17:13, Jagan Teki wrote:

[...]

> +static const struct samsung_dsim_driver_data imx8mm_dsi_driver_data = {
> +	.reg_ofs = exynos5433_reg_ofs,
> +	.plltmr_reg = 0xa0,
> +	.has_clklane_stop = 1,
> +	.num_clks = 2,
> +	.max_freq = 2100,
> +	.wait_for_reset = 0,
> +	.num_bits_resol = 12,
> +	/**

Should this really be kerneldoc style /** comment or plain /* comment ?
If the later, please fix globally, there are multiple such FIXME comments.

> +	 * FIXME:
> +	 * Offset value used from downstream drivers/gpu/drm/bridge/sec-dsim.c
> +	 * remove this comment if it is true else update the logic.
> +	 */
> +	.pll_p_offset = 14,
> +	.reg_values = imx8mm_dsim_reg_values,
> +};

[...]

Patch

diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index f5cd80641cea..1b5ba33dc635 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -360,6 +360,24 @@  static const unsigned int exynos5433_reg_values[] = {
 	[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c),
 };
 
+static const unsigned int imx8mm_dsim_reg_values[] = {
+	[RESET_TYPE] = DSIM_SWRST,
+	[PLL_TIMER] = 500,
+	[STOP_STATE_CNT] = 0xf,
+	[PHYCTRL_ULPS_EXIT] = 0,
+	[PHYCTRL_VREG_LP] = 0,
+	[PHYCTRL_SLEW_UP] = 0,
+	[PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x06),
+	[PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0b),
+	[PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x07),
+	[PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x26),
+	[PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d),
+	[PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x08),
+	[PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x08),
+	[PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0d),
+	[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b),
+};
+
 static const struct samsung_dsim_driver_data exynos3_dsi_driver_data = {
 	.reg_ofs = exynos_reg_ofs,
 	.plltmr_reg = 0x50,
@@ -421,6 +439,23 @@  static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = {
 	.reg_values = exynos5422_reg_values,
 };
 
+static const struct samsung_dsim_driver_data imx8mm_dsi_driver_data = {
+	.reg_ofs = exynos5433_reg_ofs,
+	.plltmr_reg = 0xa0,
+	.has_clklane_stop = 1,
+	.num_clks = 2,
+	.max_freq = 2100,
+	.wait_for_reset = 0,
+	.num_bits_resol = 12,
+	/**
+	 * FIXME:
+	 * Offset value used from downstream drivers/gpu/drm/bridge/sec-dsim.c
+	 * remove this comment if it is true else update the logic.
+	 */
+	.pll_p_offset = 14,
+	.reg_values = imx8mm_dsim_reg_values,
+};
+
 static const struct samsung_dsim_driver_data *
 samsung_dsim_types[SAMSUNG_DSIM_TYPE_COUNT] = {
 	[SAMSUNG_DSIM_TYPE_EXYNOS3250] = &exynos3_dsi_driver_data,
@@ -428,6 +463,7 @@  samsung_dsim_types[SAMSUNG_DSIM_TYPE_COUNT] = {
 	[SAMSUNG_DSIM_TYPE_EXYNOS5410] = &exynos5_dsi_driver_data,
 	[SAMSUNG_DSIM_TYPE_EXYNOS5422] = &exynos5422_dsi_driver_data,
 	[SAMSUNG_DSIM_TYPE_EXYNOS5433] = &exynos5433_dsi_driver_data,
+	[SAMSUNG_DSIM_TYPE_IMX8MM] = &imx8mm_dsi_driver_data,
 };
 
 static inline struct samsung_dsim *host_to_dsi(struct mipi_dsi_host *h)
@@ -1788,7 +1824,16 @@  const struct dev_pm_ops samsung_dsim_pm_ops = {
 };
 EXPORT_SYMBOL_GPL(samsung_dsim_pm_ops);
 
+static const struct samsung_dsim_plat_data samsung_dsim_imx8mm_pdata = {
+	.hw_type = SAMSUNG_DSIM_TYPE_IMX8MM,
+	.host_ops = &samsung_dsim_generic_host_ops,
+};
+
 static const struct of_device_id samsung_dsim_of_match[] = {
+	{
+		.compatible = "fsl,imx8mm-mipi-dsim",
+		.data = &samsung_dsim_imx8mm_pdata,
+	},
 	{ /* sentinel. */ }
 };
 MODULE_DEVICE_TABLE(of, samsung_dsim_of_match);