diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-09-15 11:53:56 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-10-16 12:47:48 +0300 |
| commit | 1399ebacbf590dfbac4fbba181dd1595b2fa10ba (patch) | |
| tree | 72854e45c749d45adbfe0813dbf17d9139344c3b /drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c | |
| parent | b2b2f7ba8f793d52d5401bce52e541a5f38a6b43 (diff) | |
| download | linux-1399ebacbf590dfbac4fbba181dd1595b2fa10ba.tar.xz | |
drm: renesas: shmobile: Add DT support
Add DT support, by:
1. Creating a panel bridge from DT, and attaching it to the encoder,
2. Replacing the custom connector with a bridge connector,
3. Obtaining clock configuration based on the compatible value.
Note that for now the driver uses a fixed clock configuration selecting
the bus clock, as the current code to select other clock inputs needs
changes to support any other SoCs than SH7724.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6185ab76aa300fa402e4f6610b2109665f2d8a1c.1694767209.git.geert+renesas@glider.be
Diffstat (limited to 'drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c index c498d0d9b4fc..e83c3e52251d 100644 --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c @@ -11,6 +11,7 @@ #include <linux/io.h> #include <linux/mm.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <linux/pm_runtime.h> @@ -173,11 +174,13 @@ static void shmob_drm_remove(struct platform_device *pdev) static int shmob_drm_probe(struct platform_device *pdev) { struct shmob_drm_platform_data *pdata = pdev->dev.platform_data; + const struct shmob_drm_config *config; struct shmob_drm_device *sdev; struct drm_device *ddev; int ret; - if (pdata == NULL) { + config = of_device_get_match_data(&pdev->dev); + if (!config && !pdata) { dev_err(&pdev->dev, "no platform data\n"); return -EINVAL; } @@ -193,7 +196,13 @@ static int shmob_drm_probe(struct platform_device *pdev) ddev = &sdev->ddev; sdev->dev = &pdev->dev; - sdev->pdata = pdata; + if (config) { + sdev->config = *config; + } else { + sdev->pdata = pdata; + sdev->config.clk_source = pdata->clk_source; + sdev->config.clk_div = pdata->iface.clk_div; + } spin_lock_init(&sdev->irq_lock); platform_set_drvdata(pdev, sdev); @@ -202,7 +211,7 @@ static int shmob_drm_probe(struct platform_device *pdev) if (IS_ERR(sdev->mmio)) return PTR_ERR(sdev->mmio); - ret = shmob_drm_setup_clocks(sdev, pdata->clk_source); + ret = shmob_drm_setup_clocks(sdev, sdev->config.clk_source); if (ret < 0) return ret; @@ -250,11 +259,23 @@ err_modeset_cleanup: return ret; } +static const struct shmob_drm_config shmob_arm_config = { + .clk_source = SHMOB_DRM_CLK_BUS, + .clk_div = 5, +}; + +static const struct of_device_id shmob_drm_of_table[] __maybe_unused = { + { .compatible = "renesas,r8a7740-lcdc", .data = &shmob_arm_config, }, + { .compatible = "renesas,sh73a0-lcdc", .data = &shmob_arm_config, }, + { /* sentinel */ } +}; + static struct platform_driver shmob_drm_platform_driver = { .probe = shmob_drm_probe, .remove_new = shmob_drm_remove, .driver = { .name = "shmob-drm", + .of_match_table = of_match_ptr(shmob_drm_of_table), .pm = &shmob_drm_pm_ops, }, }; |