drm/sun4i: csc: Add support for the new MMIO layout

D1 changes the MMIO offsets for the CSC blocks in the first mixer. The
mixers' ccsc property is used as an index into the ccsc_base array. Use
an enumeration to describe this index, and add the new set of offsets.

Signed-off-by: Samuel Holland <[e-mail]>
Reviewed-by: Jernej Skrabec <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/sun4i/sun8i_csc.c

···
 #include "sun8i_csc.h"
 #include "sun8i_mixer.h"
 
-static const u32 ccsc_base[2][2] = {
-	{CCSC00_OFFSET, CCSC01_OFFSET},
-	{CCSC10_OFFSET, CCSC11_OFFSET},
+static const u32 ccsc_base[][2] = {
+	[CCSC_MIXER0_LAYOUT]	= {CCSC00_OFFSET, CCSC01_OFFSET},
+	[CCSC_MIXER1_LAYOUT]	= {CCSC10_OFFSET, CCSC11_OFFSET},
+	[CCSC_D1_MIXER0_LAYOUT]	= {CCSC00_OFFSET, CCSC01_D1_OFFSET},
 };
 
 /*

drivers/gpu/drm/sun4i/sun8i_csc.h

···
 /* VI channel CSC units offsets */
 #define CCSC00_OFFSET 0xAA050
 #define CCSC01_OFFSET 0xFA050
+#define CCSC01_D1_OFFSET 0xFA000
 #define CCSC10_OFFSET 0xA0000
 #define CCSC11_OFFSET 0xF0000
 

drivers/gpu/drm/sun4i/sun8i_mixer.c

···
 }
 
 static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = {
-	.ccsc		= 0,
+	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.scaler_mask	= 0xf,
 	.scanline_yuv	= 2048,
 	.ui_num		= 3,
···
 };
 
 static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = {
-	.ccsc		= 1,
+	.ccsc		= CCSC_MIXER1_LAYOUT,
 	.scaler_mask	= 0x3,
 	.scanline_yuv	= 2048,
 	.ui_num		= 1,
···
 };
 
 static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = {
-	.ccsc		= 0,
+	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.mod_rate	= 432000000,
 	.scaler_mask	= 0xf,
 	.scanline_yuv	= 2048,
···
 };
 
 static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = {
-	.ccsc		= 0,
+	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.mod_rate	= 297000000,
 	.scaler_mask	= 0xf,
 	.scanline_yuv	= 2048,
···
 };
 
 static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = {
-	.ccsc		= 1,
+	.ccsc		= CCSC_MIXER1_LAYOUT,
 	.mod_rate	= 297000000,
 	.scaler_mask	= 0x3,
 	.scanline_yuv	= 2048,
···
 	.ui_num = 1,
 	.scaler_mask = 0x3,
 	.scanline_yuv = 2048,
-	.ccsc = 0,
+	.ccsc = CCSC_MIXER0_LAYOUT,
 	.mod_rate = 150000000,
 };
 
 static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg = {
-	.ccsc		= 0,
+	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.mod_rate	= 297000000,
 	.scaler_mask	= 0xf,
 	.scanline_yuv	= 4096,
···
 };
 
 static const struct sun8i_mixer_cfg sun50i_a64_mixer1_cfg = {
-	.ccsc		= 1,
+	.ccsc		= CCSC_MIXER1_LAYOUT,
 	.mod_rate	= 297000000,
 	.scaler_mask	= 0x3,
 	.scanline_yuv	= 2048,
···
 };
 
 static const struct sun8i_mixer_cfg sun50i_h6_mixer0_cfg = {
-	.ccsc		= 0,
+	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.is_de3		= true,
 	.mod_rate	= 600000000,
 	.scaler_mask	= 0xf,

drivers/gpu/drm/sun4i/sun8i_mixer.h

···
 #define SUN50I_MIXER_CDC0_EN			0xd0000
 #define SUN50I_MIXER_CDC1_EN			0xd8000
 
+enum {
+	/* First mixer or second mixer with VEP support. */
+	CCSC_MIXER0_LAYOUT,
+	/* Second mixer without VEP support. */
+	CCSC_MIXER1_LAYOUT,
+	/* First mixer with the MMIO layout found in the D1 SoC. */
+	CCSC_D1_MIXER0_LAYOUT,
+};
+
 /**
  * struct sun8i_mixer_cfg - mixer HW configuration
  * @vi_num: number of VI channels
···
  *	First, scaler supports for VI channels is defined and after that, scaler
  *	support for UI channels. For example, if mixer has 2 VI channels without
  *	scaler and 2 UI channels with scaler, bitmask would be 0xC.
- * @ccsc: select set of CCSC base addresses
- *	Set value to 0 if this is first mixer or second mixer with VEP support.
- *	Set value to 1 if this is second mixer without VEP support. Other values
- *	are invalid.
+ * @ccsc: select set of CCSC base addresses from the enumeration above.
  * @mod_rate: module clock rate that needs to be set in order to have
  *	a functional block.
  * @is_de3: true, if this is next gen display engine 3.0, false otherwise.