drm: exynos: dsi: Introduce hw_type platform data

Samsung MIPI DSIM controller is common DSI IP that can be used
in various SoCs like Exynos, i.MX8M Mini/Nano/Plus.

Add hw_type enum via platform_data so that accessing the different
controller data between various platforms becomes easy and meaningful.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 90ff40a..0f0834e 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -254,6 +254,15 @@ struct exynos_dsi_transfer {
 #define DSIM_STATE_CMD_LPM             BIT(2)
 #define DSIM_STATE_VIDOUT_AVAILABLE    BIT(3)
 
+enum exynos_dsi_type {
+       DSIM_TYPE_EXYNOS3250,
+       DSIM_TYPE_EXYNOS4210,
+       DSIM_TYPE_EXYNOS5410,
+       DSIM_TYPE_EXYNOS5422,
+       DSIM_TYPE_EXYNOS5433,
+       DSIM_TYPE_COUNT,
+};
+
 struct exynos_dsi_driver_data {
        const unsigned int *reg_ofs;
        unsigned int plltmr_reg;
@@ -267,6 +276,10 @@ struct exynos_dsi_driver_data {
        const unsigned int *reg_values;
 };
 
+struct exynos_dsi_plat_data {
+       enum exynos_dsi_type hw_type;
+};
+
 struct exynos_dsi {
        struct drm_encoder encoder;
        struct mipi_dsi_host dsi_host;
@@ -297,6 +310,7 @@ struct exynos_dsi {
        struct list_head transfer_list;
 
        const struct exynos_dsi_driver_data *driver_data;
+       const struct exynos_dsi_plat_data *plat_data;
 };
 
 #define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host)
@@ -524,18 +538,13 @@ static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
        .reg_values = exynos5422_reg_values,
 };
 
-static const struct of_device_id exynos_dsi_of_match[] = {
-       { .compatible = "samsung,exynos3250-mipi-dsi",
-         .data = &exynos3_dsi_driver_data },
-       { .compatible = "samsung,exynos4210-mipi-dsi",
-         .data = &exynos4_dsi_driver_data },
-       { .compatible = "samsung,exynos5410-mipi-dsi",
-         .data = &exynos5_dsi_driver_data },
-       { .compatible = "samsung,exynos5422-mipi-dsi",
-         .data = &exynos5422_dsi_driver_data },
-       { .compatible = "samsung,exynos5433-mipi-dsi",
-         .data = &exynos5433_dsi_driver_data },
-       { }
+static const struct exynos_dsi_driver_data *
+exynos_dsi_types[DSIM_TYPE_COUNT] = {
+       [DSIM_TYPE_EXYNOS3250] = &exynos3_dsi_driver_data,
+       [DSIM_TYPE_EXYNOS4210] = &exynos4_dsi_driver_data,
+       [DSIM_TYPE_EXYNOS5410] = &exynos5_dsi_driver_data,
+       [DSIM_TYPE_EXYNOS5422] = &exynos5422_dsi_driver_data,
+       [DSIM_TYPE_EXYNOS5433] = &exynos5433_dsi_driver_data,
 };
 
 static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi)
@@ -1468,8 +1477,6 @@ static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
        .attach                         = exynos_dsi_attach,
 };
 
-MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
-
 static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
                                  struct mipi_dsi_device *device)
 {
@@ -1704,7 +1711,8 @@ static int exynos_dsi_probe(struct platform_device *pdev)
        dsi->dsi_host.dev = dev;
 
        dsi->dev = dev;
-       dsi->driver_data = of_device_get_match_data(dev);
+       dsi->plat_data = of_device_get_match_data(dev);
+       dsi->driver_data = exynos_dsi_types[dsi->plat_data->hw_type];
 
        dsi->supplies[0].supply = "vddcore";
        dsi->supplies[1].supply = "vddio";
@@ -1862,6 +1870,51 @@ static const struct dev_pm_ops exynos_dsi_pm_ops = {
                                pm_runtime_force_resume)
 };
 
+static const struct exynos_dsi_plat_data exynos3250_dsi_pdata = {
+       .hw_type = DSIM_TYPE_EXYNOS3250,
+};
+
+static const struct exynos_dsi_plat_data exynos4210_dsi_pdata = {
+       .hw_type = DSIM_TYPE_EXYNOS4210,
+};
+
+static const struct exynos_dsi_plat_data exynos5410_dsi_pdata = {
+       .hw_type = DSIM_TYPE_EXYNOS5410,
+};
+
+static const struct exynos_dsi_plat_data exynos5422_dsi_pdata = {
+       .hw_type = DSIM_TYPE_EXYNOS5422,
+};
+
+static const struct exynos_dsi_plat_data exynos5433_dsi_pdata = {
+       .hw_type = DSIM_TYPE_EXYNOS5433,
+};
+
+static const struct of_device_id exynos_dsi_of_match[] = {
+       {
+               .compatible = "samsung,exynos3250-mipi-dsi",
+               .data = &exynos3250_dsi_pdata,
+       },
+       {
+               .compatible = "samsung,exynos4210-mipi-dsi",
+               .data = &exynos4210_dsi_pdata,
+       },
+       {
+               .compatible = "samsung,exynos5410-mipi-dsi",
+               .data = &exynos5410_dsi_pdata,
+       },
+       {
+               .compatible = "samsung,exynos5422-mipi-dsi",
+               .data = &exynos5422_dsi_pdata,
+       },
+       {
+               .compatible = "samsung,exynos5433-mipi-dsi",
+               .data = &exynos5433_dsi_pdata,
+       },
+       { /* sentinel. */ }
+};
+MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
+
 struct platform_driver dsi_driver = {
        .probe = exynos_dsi_probe,
        .remove = exynos_dsi_remove,