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author | Andrzej Hajda <a.hajda@samsung.com> | 2017-02-01 09:35:07 +0300 |
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committer | Inki Dae <inki.dae@samsung.com> | 2017-02-07 07:52:48 +0300 |
commit | b93c2e8b5d9d1fb8241d9a9ef13a9f4ed01c93e6 (patch) | |
tree | 721c15aa0286a45544f7319b6430cb5b1fdfd03f /drivers | |
parent | 99743ae4c5f52f8f8ceb17783056fcc9b4f8b64c (diff) | |
download | linux-b93c2e8b5d9d1fb8241d9a9ef13a9f4ed01c93e6.tar.xz |
drm/exynos/decon5433: configure sysreg in case of hardware trigger
In case of HW trigger mode, sysreg register should be configured to
enable TE functionality. The patch refactors also trigger setup function.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c index d69af00bdd6a..9f5d37e46a29 100644 --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c @@ -13,9 +13,11 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/component.h> +#include <linux/mfd/syscon.h> #include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/pm_runtime.h> +#include <linux/regmap.h> #include <video/exynos5433_decon.h> @@ -25,6 +27,9 @@ #include "exynos_drm_plane.h" #include "exynos_drm_iommu.h" +#define DSD_CFG_MUX 0x1004 +#define DSD_CFG_MUX_TE_UNMASK_GLOBAL BIT(13) + #define WINDOWS_NR 3 #define MIN_FB_WIDTH_FOR_16WORD_BURST 128 @@ -57,6 +62,7 @@ struct decon_context { struct exynos_drm_plane planes[WINDOWS_NR]; struct exynos_drm_plane_config configs[WINDOWS_NR]; void __iomem *addr; + struct regmap *sysreg; struct clk *clks[ARRAY_SIZE(decon_clks_name)]; int pipe; unsigned long flags; @@ -118,12 +124,22 @@ static void decon_disable_vblank(struct exynos_drm_crtc *crtc) static void decon_setup_trigger(struct decon_context *ctx) { - u32 val = !(ctx->out_type & I80_HW_TRG) - ? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | - TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN - : TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | - TRIGCON_HWTRIGMASK | TRIGCON_HWTRIGEN; - writel(val, ctx->addr + DECON_TRIGCON); + if (!(ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))) + return; + + if (!(ctx->out_type & I80_HW_TRG)) { + writel(TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN + | TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN, + ctx->addr + DECON_TRIGCON); + return; + } + + writel(TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | TRIGCON_HWTRIGMASK + | TRIGCON_HWTRIGEN, ctx->addr + DECON_TRIGCON); + + if (regmap_update_bits(ctx->sysreg, DSD_CFG_MUX, + DSD_CFG_MUX_TE_UNMASK_GLOBAL, ~0)) + DRM_ERROR("Cannot update sysreg.\n"); } static void decon_commit(struct exynos_drm_crtc *crtc) @@ -142,8 +158,7 @@ static void decon_commit(struct exynos_drm_crtc *crtc) m->crtc_vsync_end = m->crtc_vsync_start + 1; } - if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG)) - decon_setup_trigger(ctx); + decon_setup_trigger(ctx); /* lcd on and use command if */ val = VIDOUT_LCD_ON; @@ -637,6 +652,15 @@ static int exynos5433_decon_probe(struct platform_device *pdev) ctx->out_type |= IFTYPE_I80; } + if (ctx->out_type | I80_HW_TRG) { + ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node, + "samsung,disp-sysreg"); + if (IS_ERR(ctx->sysreg)) { + dev_err(dev, "failed to get system register\n"); + return PTR_ERR(ctx->sysreg); + } + } + for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) { struct clk *clk; |