diff options
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_dp_core.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.h | 15 | ||||
| -rw-r--r-- | include/video/samsung_fimd.h | 6 |
4 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index bf17a60b40ed..1dbfba58f909 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -32,10 +32,16 @@ #include <drm/bridge/ptn3460.h> #include "exynos_dp_core.h" +#include "exynos_drm_fimd.h" #define ctx_from_connector(c) container_of(c, struct exynos_dp_device, \ connector) +static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp) +{ + return to_exynos_crtc(dp->encoder->crtc); +} + static inline struct exynos_dp_device * display_to_dp(struct exynos_drm_display *d) { @@ -1070,6 +1076,8 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp) } } + fimd_dp_clock_enable(dp_to_crtc(dp), true); + clk_prepare_enable(dp->clock); exynos_dp_phy_init(dp); exynos_dp_init_dp(dp); @@ -1094,6 +1102,8 @@ static void exynos_dp_poweroff(struct exynos_dp_device *dp) exynos_dp_phy_exit(dp); clk_disable_unprepare(dp->clock); + fimd_dp_clock_enable(dp_to_crtc(dp), false); + if (dp->panel) { if (drm_panel_unprepare(dp->panel)) DRM_ERROR("failed to turnoff the panel\n"); diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 33a10ce967ea..5d58f6cc0397 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -32,6 +32,7 @@ #include "exynos_drm_fbdev.h" #include "exynos_drm_crtc.h" #include "exynos_drm_iommu.h" +#include "exynos_drm_fimd.h" /* * FIMD stands for Fully Interactive Mobile Display and @@ -1233,6 +1234,24 @@ static int fimd_remove(struct platform_device *pdev) return 0; } +void fimd_dp_clock_enable(struct exynos_drm_crtc *crtc, bool enable) +{ + struct fimd_context *ctx = crtc->ctx; + u32 val; + + /* + * Only Exynos 5250, 5260, 5410 and 542x requires enabling DP/MIE + * clock. On these SoCs the bootloader may enable it but any + * power domain off/on will reset it to disable state. + */ + if (ctx->driver_data != &exynos5_fimd_driver_data) + return; + + val = enable ? DP_MIE_CLK_DP_ENABLE : DP_MIE_CLK_DISABLE; + writel(DP_MIE_CLK_DP_ENABLE, ctx->regs + DP_MIE_CLKCON); +} +EXPORT_SYMBOL_GPL(fimd_dp_clock_enable); + struct platform_driver fimd_driver = { .probe = fimd_probe, .remove = fimd_remove, diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.h b/drivers/gpu/drm/exynos/exynos_drm_fimd.h new file mode 100644 index 000000000000..b4fcaa568456 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.h @@ -0,0 +1,15 @@ +/* + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef _EXYNOS_DRM_FIMD_H_ +#define _EXYNOS_DRM_FIMD_H_ + +extern void fimd_dp_clock_enable(struct exynos_drm_crtc *crtc, bool enable); + +#endif /* _EXYNOS_DRM_FIMD_H_ */ diff --git a/include/video/samsung_fimd.h b/include/video/samsung_fimd.h index a20e4a3a8b15..847a0a2b399c 100644 --- a/include/video/samsung_fimd.h +++ b/include/video/samsung_fimd.h @@ -436,6 +436,12 @@ #define BLENDCON_NEW_8BIT_ALPHA_VALUE (1 << 0) #define BLENDCON_NEW_4BIT_ALPHA_VALUE (0 << 0) +/* Display port clock control */ +#define DP_MIE_CLKCON 0x27c +#define DP_MIE_CLK_DISABLE 0x0 +#define DP_MIE_CLK_DP_ENABLE 0x2 +#define DP_MIE_CLK_MIE_ENABLE 0x3 + /* Notes on per-window bpp settings * * Value Win0 Win1 Win2 Win3 Win 4 |