Merge tag 'exynos-drm-next-for-v4.15' of...

Merge tag 'exynos-drm-next-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

- Improved HDMI and Mixer drivers
  . It moves mode setup and plane update code to commit
    like other CRTC drivers
  . It makes mode commit to be called in enable callback only one time
  . some cleanup and fixup to HDMI and Mixer drivers.
  . It adds 1024x768, 1280x1024 and 1366x768 modes support
- Added HDMI audio interface driver
  . As of now, HDMI audio worked on boards with external audio codec connected
    in parallel with the HDMI audio transmitter's I2S interface.
    This patch is required to support HDMI audio properly.

* tag 'exynos-drm-next-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm: exynos: Add driver for HDMI audio interface
  drm/exynos/hdmi: add 85.5MHz pixel clock for v14 HDMI PHY
  drm/exynos/mixer: enable support for 1024x768 and 1280x1024 modes
  drm/exynos/hdmi: quirk for support mode timings conversion
  drm/exynos/mixer: pass actual mode on MIXER to encoder
  drm/exynos: add mode_fixup callback to exynos_drm_crtc_ops
  drm/exynos/hdmi: remove redundant mode field
  drm/exynos/mixer: remove mixer_resources sub-structure
  drm/exynos/mixer: fix mode validation code
  drm/exynos/mixer: move resolution configuration to single function
  drm/exynos/mixer: move mode commit to enable callback
  drm/exynos/mixer: abstract out output mode setup code

drivers/gpu/drm/exynos/Kconfig

@@ -3,6 +3,7 @@ config DRM_EXYNOS
 	depends on OF && DRM && (ARCH_S3C64XX || ARCH_EXYNOS || ARCH_MULTIPLATFORM)
 	select DRM_KMS_HELPER
 	select VIDEOMODE_HELPERS
+	select SND_SOC_HDMI_CODEC if SND_SOC
 	help
 	  Choose this option if you have a Samsung SoC EXYNOS chipset.
 	  If M is selected the module will be called exynosdrm.

drivers/gpu/drm/exynos/exynos_drm_crtc.c

@@ -95,8 +95,23 @@ static enum drm_mode_status exynos_crtc_mode_valid(struct drm_crtc *crtc,
 	return MODE_OK;
 }
 
+static bool exynos_crtc_mode_fixup(struct drm_crtc *crtc,
+		const struct drm_display_mode *mode,
+		struct drm_display_mode *adjusted_mode)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->mode_fixup)
+		return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
+				adjusted_mode);
+
+	return true;
+}
+
+
 static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
 	.mode_valid	= exynos_crtc_mode_valid,
+	.mode_fixup	= exynos_crtc_mode_fixup,
 	.atomic_check	= exynos_crtc_atomic_check,
 	.atomic_begin	= exynos_crtc_atomic_begin,
 	.atomic_flush	= exynos_crtc_atomic_flush,

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -136,6 +136,9 @@ struct exynos_drm_crtc_ops {
 	u32 (*get_vblank_counter)(struct exynos_drm_crtc *crtc);
 	enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc,
 		const struct drm_display_mode *mode);
+	bool (*mode_fixup)(struct exynos_drm_crtc *crtc,
+			   const struct drm_display_mode *mode,
+			   struct drm_display_mode *adjusted_mode);
 	int (*atomic_check)(struct exynos_drm_crtc *crtc,
 			    struct drm_crtc_state *state);
 	void (*atomic_begin)(struct exynos_drm_crtc *crtc);

drivers/gpu/drm/exynos/regs-hdmi.h

@@ -419,11 +419,9 @@
 #define HDMI_I2S_DSD_CON		HDMI_I2S_BASE(0x01c)
 #define HDMI_I2S_MUX_CON		HDMI_I2S_BASE(0x020)
 #define HDMI_I2S_CH_ST_CON		HDMI_I2S_BASE(0x024)
-#define HDMI_I2S_CH_ST_0		HDMI_I2S_BASE(0x028)
-#define HDMI_I2S_CH_ST_1		HDMI_I2S_BASE(0x02c)
-#define HDMI_I2S_CH_ST_2		HDMI_I2S_BASE(0x030)
-#define HDMI_I2S_CH_ST_3		HDMI_I2S_BASE(0x034)
-#define HDMI_I2S_CH_ST_4		HDMI_I2S_BASE(0x038)
+/* n must be within range 0...(HDMI_I2S_CH_ST_MAXNUM - 1) */
+#define HDMI_I2S_CH_ST_MAXNUM		5
+#define HDMI_I2S_CH_ST(n)		HDMI_I2S_BASE(0x028 + 4 * (n))
 #define HDMI_I2S_CH_ST_SH_0		HDMI_I2S_BASE(0x03c)
 #define HDMI_I2S_CH_ST_SH_1		HDMI_I2S_BASE(0x040)
 #define HDMI_I2S_CH_ST_SH_2		HDMI_I2S_BASE(0x044)