diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/samsung-dsim.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/samsung-dsim.c | 55 |
1 files changed, 38 insertions, 17 deletions
diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 95fedc68b0ae..0014c497e3fe 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -10,7 +10,7 @@ * Tomasz Figa <t.figa@samsung.com> */ -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/clk.h> #include <linux/delay.h> @@ -574,8 +574,8 @@ static unsigned long samsung_dsim_pll_find_pms(struct samsung_dsim *dsi, u16 _m, best_m; u8 _s, best_s; - p_min = DIV_ROUND_UP(fin, (12 * MHZ)); - p_max = fin / (6 * MHZ); + p_min = DIV_ROUND_UP(fin, (driver_data->pll_fin_max * MHZ)); + p_max = fin / (driver_data->pll_fin_min * MHZ); for (_p = p_min; _p <= p_max; ++_p) { for (_s = 0; _s <= 5; ++_s) { @@ -1457,7 +1457,7 @@ static int samsung_dsim_init(struct samsung_dsim *dsi) } static void samsung_dsim_atomic_pre_enable(struct drm_bridge *bridge, - struct drm_bridge_state *old_bridge_state) + struct drm_atomic_state *state) { struct samsung_dsim *dsi = bridge_to_dsi(bridge); int ret; @@ -1485,7 +1485,7 @@ static void samsung_dsim_atomic_pre_enable(struct drm_bridge *bridge, } static void samsung_dsim_atomic_enable(struct drm_bridge *bridge, - struct drm_bridge_state *old_bridge_state) + struct drm_atomic_state *state) { struct samsung_dsim *dsi = bridge_to_dsi(bridge); @@ -1496,7 +1496,7 @@ static void samsung_dsim_atomic_enable(struct drm_bridge *bridge, } static void samsung_dsim_atomic_disable(struct drm_bridge *bridge, - struct drm_bridge_state *old_bridge_state) + struct drm_atomic_state *state) { struct samsung_dsim *dsi = bridge_to_dsi(bridge); @@ -1508,7 +1508,7 @@ static void samsung_dsim_atomic_disable(struct drm_bridge *bridge, } static void samsung_dsim_atomic_post_disable(struct drm_bridge *bridge, - struct drm_bridge_state *old_bridge_state) + struct drm_atomic_state *state) { struct samsung_dsim *dsi = bridge_to_dsi(bridge); @@ -1606,6 +1606,27 @@ static int samsung_dsim_atomic_check(struct drm_bridge *bridge, adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); } + /* + * When using video sync pulses, the HFP, HBP, and HSA are divided between + * the available lanes if there is more than one lane. For certain + * timings and lane configurations, the HFP may not be evenly divisible. + * If the HFP is rounded down, it ends up being too small which can cause + * some monitors to not sync properly. In these instances, adjust htotal + * and hsync to round the HFP up, and recalculate the htotal. Through trial + * and error, it appears that the HBP and HSA do not appearto need the same + * correction that HFP does. + */ + if (dsi->lanes > 1) { + int hfp = adjusted_mode->hsync_start - adjusted_mode->hdisplay; + int remainder = hfp % dsi->lanes; + + if (remainder) { + adjusted_mode->hsync_start += remainder; + adjusted_mode->hsync_end += remainder; + adjusted_mode->htotal += remainder; + } + } + return 0; } @@ -1619,11 +1640,12 @@ static void samsung_dsim_mode_set(struct drm_bridge *bridge, } static int samsung_dsim_attach(struct drm_bridge *bridge, + struct drm_encoder *encoder, enum drm_bridge_attach_flags flags) { struct samsung_dsim *dsi = bridge_to_dsi(bridge); - return drm_bridge_attach(bridge->encoder, dsi->out_bridge, bridge, + return drm_bridge_attach(encoder, dsi->out_bridge, bridge, flags); } @@ -1914,9 +1936,9 @@ int samsung_dsim_probe(struct platform_device *pdev) struct samsung_dsim *dsi; int ret, i; - dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL); - if (!dsi) - return -ENOMEM; + dsi = devm_drm_bridge_alloc(dev, struct samsung_dsim, bridge, &samsung_dsim_bridge_funcs); + if (IS_ERR(dsi)) + return PTR_ERR(dsi); init_completion(&dsi->completed); spin_lock_init(&dsi->transfer_lock); @@ -1986,7 +2008,6 @@ int samsung_dsim_probe(struct platform_device *pdev) pm_runtime_enable(dev); - dsi->bridge.funcs = &samsung_dsim_bridge_funcs; dsi->bridge.of_node = dev->of_node; dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; @@ -2022,7 +2043,7 @@ void samsung_dsim_remove(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(samsung_dsim_remove); -static int __maybe_unused samsung_dsim_suspend(struct device *dev) +static int samsung_dsim_suspend(struct device *dev) { struct samsung_dsim *dsi = dev_get_drvdata(dev); const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; @@ -2052,7 +2073,7 @@ static int __maybe_unused samsung_dsim_suspend(struct device *dev) return 0; } -static int __maybe_unused samsung_dsim_resume(struct device *dev) +static int samsung_dsim_resume(struct device *dev) { struct samsung_dsim *dsi = dev_get_drvdata(dev); const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; @@ -2087,7 +2108,7 @@ err_clk: } const struct dev_pm_ops samsung_dsim_pm_ops = { - SET_RUNTIME_PM_OPS(samsung_dsim_suspend, samsung_dsim_resume, NULL) + RUNTIME_PM_OPS(samsung_dsim_suspend, samsung_dsim_resume, NULL) SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) }; @@ -2118,10 +2139,10 @@ MODULE_DEVICE_TABLE(of, samsung_dsim_of_match); static struct platform_driver samsung_dsim_driver = { .probe = samsung_dsim_probe, - .remove_new = samsung_dsim_remove, + .remove = samsung_dsim_remove, .driver = { .name = "samsung-dsim", - .pm = &samsung_dsim_pm_ops, + .pm = pm_ptr(&samsung_dsim_pm_ops), .of_match_table = samsung_dsim_of_match, }, }; |