diff options
Diffstat (limited to 'drivers/gpu/drm/stm/ltdc.c')
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.c | 915 |
1 files changed, 749 insertions, 166 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index dbdee954692a..17cc050207f4 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -18,6 +18,7 @@ #include <linux/pinctrl/consumer.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/regmap.h> #include <linux/reset.h> #include <drm/drm_atomic.h> @@ -46,15 +47,15 @@ #define HWVER_10200 0x010200 #define HWVER_10300 0x010300 #define HWVER_20101 0x020101 +#define HWVER_40100 0x040100 /* * The address of some registers depends on the HW version: such registers have - * an extra offset specified with reg_ofs. + * an extra offset specified with layer_ofs. */ -#define REG_OFS_NONE 0 -#define REG_OFS_4 4 /* Insertion of "Layer Conf. 2" reg */ -#define REG_OFS (ldev->caps.reg_ofs) -#define LAY_OFS 0x80 /* Register Offset between 2 layers */ +#define LAY_OFS_0 0x80 +#define LAY_OFS_1 0x100 +#define LAY_OFS (ldev->caps.layer_ofs) /* Global register offsets */ #define LTDC_IDR 0x0000 /* IDentification */ @@ -75,29 +76,36 @@ #define LTDC_LIPCR 0x0040 /* Line Interrupt Position Conf. */ #define LTDC_CPSR 0x0044 /* Current Position Status */ #define LTDC_CDSR 0x0048 /* Current Display Status */ +#define LTDC_EDCR 0x0060 /* External Display Control */ +#define LTDC_CCRCR 0x007C /* Computed CRC value */ +#define LTDC_FUT 0x0090 /* Fifo underrun Threshold */ /* Layer register offsets */ -#define LTDC_L1LC1R (0x80) /* L1 Layer Configuration 1 */ -#define LTDC_L1LC2R (0x84) /* L1 Layer Configuration 2 */ -#define LTDC_L1CR (0x84 + REG_OFS)/* L1 Control */ -#define LTDC_L1WHPCR (0x88 + REG_OFS)/* L1 Window Hor Position Config */ -#define LTDC_L1WVPCR (0x8C + REG_OFS)/* L1 Window Vert Position Config */ -#define LTDC_L1CKCR (0x90 + REG_OFS)/* L1 Color Keying Configuration */ -#define LTDC_L1PFCR (0x94 + REG_OFS)/* L1 Pixel Format Configuration */ -#define LTDC_L1CACR (0x98 + REG_OFS)/* L1 Constant Alpha Config */ -#define LTDC_L1DCCR (0x9C + REG_OFS)/* L1 Default Color Configuration */ -#define LTDC_L1BFCR (0xA0 + REG_OFS)/* L1 Blend Factors Configuration */ -#define LTDC_L1FBBCR (0xA4 + REG_OFS)/* L1 FrameBuffer Bus Control */ -#define LTDC_L1AFBCR (0xA8 + REG_OFS)/* L1 AuxFB Control */ -#define LTDC_L1CFBAR (0xAC + REG_OFS)/* L1 Color FrameBuffer Address */ -#define LTDC_L1CFBLR (0xB0 + REG_OFS)/* L1 Color FrameBuffer Length */ -#define LTDC_L1CFBLNR (0xB4 + REG_OFS)/* L1 Color FrameBuffer Line Nb */ -#define LTDC_L1AFBAR (0xB8 + REG_OFS)/* L1 AuxFB Address */ -#define LTDC_L1AFBLR (0xBC + REG_OFS)/* L1 AuxFB Length */ -#define LTDC_L1AFBLNR (0xC0 + REG_OFS)/* L1 AuxFB Line Number */ -#define LTDC_L1CLUTWR (0xC4 + REG_OFS)/* L1 CLUT Write */ -#define LTDC_L1YS1R (0xE0 + REG_OFS)/* L1 YCbCr Scale 1 */ -#define LTDC_L1YS2R (0xE4 + REG_OFS)/* L1 YCbCr Scale 2 */ +#define LTDC_L1C0R (ldev->caps.layer_regs[0]) /* L1 configuration 0 */ +#define LTDC_L1C1R (ldev->caps.layer_regs[1]) /* L1 configuration 1 */ +#define LTDC_L1RCR (ldev->caps.layer_regs[2]) /* L1 reload control */ +#define LTDC_L1CR (ldev->caps.layer_regs[3]) /* L1 control register */ +#define LTDC_L1WHPCR (ldev->caps.layer_regs[4]) /* L1 window horizontal position configuration */ +#define LTDC_L1WVPCR (ldev->caps.layer_regs[5]) /* L1 window vertical position configuration */ +#define LTDC_L1CKCR (ldev->caps.layer_regs[6]) /* L1 color keying configuration */ +#define LTDC_L1PFCR (ldev->caps.layer_regs[7]) /* L1 pixel format configuration */ +#define LTDC_L1CACR (ldev->caps.layer_regs[8]) /* L1 constant alpha configuration */ +#define LTDC_L1DCCR (ldev->caps.layer_regs[9]) /* L1 default color configuration */ +#define LTDC_L1BFCR (ldev->caps.layer_regs[10]) /* L1 blending factors configuration */ +#define LTDC_L1BLCR (ldev->caps.layer_regs[11]) /* L1 burst length configuration */ +#define LTDC_L1PCR (ldev->caps.layer_regs[12]) /* L1 planar configuration */ +#define LTDC_L1CFBAR (ldev->caps.layer_regs[13]) /* L1 color frame buffer address */ +#define LTDC_L1CFBLR (ldev->caps.layer_regs[14]) /* L1 color frame buffer length */ +#define LTDC_L1CFBLNR (ldev->caps.layer_regs[15]) /* L1 color frame buffer line number */ +#define LTDC_L1AFBA0R (ldev->caps.layer_regs[16]) /* L1 auxiliary frame buffer address 0 */ +#define LTDC_L1AFBA1R (ldev->caps.layer_regs[17]) /* L1 auxiliary frame buffer address 1 */ +#define LTDC_L1AFBLR (ldev->caps.layer_regs[18]) /* L1 auxiliary frame buffer length */ +#define LTDC_L1AFBLNR (ldev->caps.layer_regs[19]) /* L1 auxiliary frame buffer line number */ +#define LTDC_L1CLUTWR (ldev->caps.layer_regs[20]) /* L1 CLUT write */ +#define LTDC_L1CYR0R (ldev->caps.layer_regs[21]) /* L1 Conversion YCbCr RGB 0 */ +#define LTDC_L1CYR1R (ldev->caps.layer_regs[22]) /* L1 Conversion YCbCr RGB 1 */ +#define LTDC_L1FPF0R (ldev->caps.layer_regs[23]) /* L1 Flexible Pixel Format 0 */ +#define LTDC_L1FPF1R (ldev->caps.layer_regs[24]) /* L1 Flexible Pixel Format 1 */ /* Bit definitions */ #define SSCR_VSH GENMASK(10, 0) /* Vertical Synchronization Height */ @@ -114,6 +122,7 @@ #define GCR_LTDCEN BIT(0) /* LTDC ENable */ #define GCR_DEN BIT(16) /* Dither ENable */ +#define GCR_CRCEN BIT(19) /* CRC ENable */ #define GCR_PCPOL BIT(28) /* Pixel Clock POLarity-Inverted */ #define GCR_DEPOL BIT(29) /* Data Enable POLarity-High */ #define GCR_VSPOL BIT(30) /* Vertical Synchro POLarity-High */ @@ -164,6 +173,10 @@ #define ISR_TERRIF BIT(2) /* Transfer ERRor Interrupt Flag */ #define ISR_RRIF BIT(3) /* Register Reload Interrupt Flag */ +#define EDCR_OCYEN BIT(25) /* Output Conversion to YCbCr 422: ENable */ +#define EDCR_OCYSEL BIT(26) /* Output Conversion to YCbCr 422: SELection of the CCIR */ +#define EDCR_OCYCO BIT(27) /* Output Conversion to YCbCr 422: Chrominance Order */ + #define LXCR_LEN BIT(0) /* Layer ENable */ #define LXCR_COLKEN BIT(1) /* Color Keying Enable */ #define LXCR_CLUTEN BIT(4) /* Color Look-Up Table ENable */ @@ -175,6 +188,7 @@ #define LXWVPCR_WVSPPOS GENMASK(26, 16) /* Window Vertical StoP POSition */ #define LXPFCR_PF GENMASK(2, 0) /* Pixel Format */ +#define PF_FLEXIBLE 0x7 /* Flexible Pixel Format selected */ #define LXCACR_CONSTA GENMASK(7, 0) /* CONSTant Alpha */ @@ -186,6 +200,25 @@ #define LXCFBLNR_CFBLN GENMASK(10, 0) /* Color Frame Buffer Line Number */ +#define LXCR_C1R_YIA BIT(0) /* Ycbcr 422 Interleaved Ability */ +#define LXCR_C1R_YSPA BIT(1) /* Ycbcr 420 Semi-Planar Ability */ +#define LXCR_C1R_YFPA BIT(2) /* Ycbcr 420 Full-Planar Ability */ +#define LXCR_C1R_SCA BIT(31) /* SCaling Ability*/ + +#define LxPCR_YREN BIT(9) /* Y Rescale Enable for the color dynamic range */ +#define LxPCR_OF BIT(8) /* Odd pixel First */ +#define LxPCR_CBF BIT(7) /* CB component First */ +#define LxPCR_YF BIT(6) /* Y component First */ +#define LxPCR_YCM GENMASK(5, 4) /* Ycbcr Conversion Mode */ +#define YCM_I 0x0 /* Interleaved 422 */ +#define YCM_SP 0x1 /* Semi-Planar 420 */ +#define YCM_FP 0x2 /* Full-Planar 420 */ +#define LxPCR_YCEN BIT(3) /* YCbCr-to-RGB Conversion Enable */ + +#define LXRCR_IMR BIT(0) /* IMmediate Reload */ +#define LXRCR_VBR BIT(1) /* Vertical Blanking Reload */ +#define LXRCR_GRMSK BIT(2) /* Global (centralized) Reload MaSKed */ + #define CLUT_SIZE 256 #define CONSTA_MAX 0xFF /* CONSTant Alpha MAX= 1.0 */ @@ -196,13 +229,24 @@ #define NB_PF 8 /* Max nb of HW pixel format */ +/* + * Skip the first value and the second in case CRC was enabled during + * the thread irq. This is to be sure CRC value is relevant for the + * frame. + */ +#define CRC_SKIP_FRAMES 2 + enum ltdc_pix_fmt { PF_NONE, /* RGB formats */ PF_ARGB8888, /* ARGB [32 bits] */ PF_RGBA8888, /* RGBA [32 bits] */ + PF_ABGR8888, /* ABGR [32 bits] */ + PF_BGRA8888, /* BGRA [32 bits] */ PF_RGB888, /* RGB [24 bits] */ + PF_BGR888, /* BGR [24 bits] */ PF_RGB565, /* RGB [16 bits] */ + PF_BGR565, /* BGR [16 bits] */ PF_ARGB1555, /* ARGB A:1 bit RGB:15 bits [16 bits] */ PF_ARGB4444, /* ARGB A:4 bits R/G/B: 4 bits each [16 bits] */ /* Indexed formats */ @@ -234,36 +278,198 @@ static const enum ltdc_pix_fmt ltdc_pix_fmt_a1[NB_PF] = { PF_ARGB4444 /* 0x07 */ }; -static const u64 ltdc_format_modifiers[] = { - DRM_FORMAT_MOD_LINEAR, - DRM_FORMAT_MOD_INVALID +static const enum ltdc_pix_fmt ltdc_pix_fmt_a2[NB_PF] = { + PF_ARGB8888, /* 0x00 */ + PF_ABGR8888, /* 0x01 */ + PF_RGBA8888, /* 0x02 */ + PF_BGRA8888, /* 0x03 */ + PF_RGB565, /* 0x04 */ + PF_BGR565, /* 0x05 */ + PF_RGB888, /* 0x06 */ + PF_NONE /* 0x07 */ }; -static inline u32 reg_read(void __iomem *base, u32 reg) -{ - return readl_relaxed(base + reg); -} +static const u32 ltdc_drm_fmt_a0[] = { + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGB565, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_C8 +}; -static inline void reg_write(void __iomem *base, u32 reg, u32 val) -{ - writel_relaxed(val, base + reg); -} +static const u32 ltdc_drm_fmt_a1[] = { + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGB565, + DRM_FORMAT_RGBA8888, + DRM_FORMAT_RGBX8888, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_C8 +}; -static inline void reg_set(void __iomem *base, u32 reg, u32 mask) -{ - reg_write(base, reg, reg_read(base, reg) | mask); -} +static const u32 ltdc_drm_fmt_a2[] = { + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ABGR8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_RGBA8888, + DRM_FORMAT_RGBX8888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_RGB565, + DRM_FORMAT_BGR565, + DRM_FORMAT_RGB888, + DRM_FORMAT_BGR888, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_C8 +}; -static inline void reg_clear(void __iomem *base, u32 reg, u32 mask) -{ - reg_write(base, reg, reg_read(base, reg) & ~mask); -} +static const u32 ltdc_drm_fmt_ycbcr_cp[] = { + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_UYVY, + DRM_FORMAT_VYUY +}; -static inline void reg_update_bits(void __iomem *base, u32 reg, u32 mask, - u32 val) -{ - reg_write(base, reg, (reg_read(base, reg) & ~mask) | val); -} +static const u32 ltdc_drm_fmt_ycbcr_sp[] = { + DRM_FORMAT_NV12, + DRM_FORMAT_NV21 +}; + +static const u32 ltdc_drm_fmt_ycbcr_fp[] = { + DRM_FORMAT_YUV420, + DRM_FORMAT_YVU420 +}; + +/* Layer register offsets */ +static const u32 ltdc_layer_regs_a0[] = { + 0x80, /* L1 configuration 0 */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x84, /* L1 control register */ + 0x88, /* L1 window horizontal position configuration */ + 0x8c, /* L1 window vertical position configuration */ + 0x90, /* L1 color keying configuration */ + 0x94, /* L1 pixel format configuration */ + 0x98, /* L1 constant alpha configuration */ + 0x9c, /* L1 default color configuration */ + 0xa0, /* L1 blending factors configuration */ + 0x00, /* not available */ + 0x00, /* not available */ + 0xac, /* L1 color frame buffer address */ + 0xb0, /* L1 color frame buffer length */ + 0xb4, /* L1 color frame buffer line number */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00, /* not available */ + 0xc4, /* L1 CLUT write */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00 /* not available */ +}; + +static const u32 ltdc_layer_regs_a1[] = { + 0x80, /* L1 configuration 0 */ + 0x84, /* L1 configuration 1 */ + 0x00, /* L1 reload control */ + 0x88, /* L1 control register */ + 0x8c, /* L1 window horizontal position configuration */ + 0x90, /* L1 window vertical position configuration */ + 0x94, /* L1 color keying configuration */ + 0x98, /* L1 pixel format configuration */ + 0x9c, /* L1 constant alpha configuration */ + 0xa0, /* L1 default color configuration */ + 0xa4, /* L1 blending factors configuration */ + 0xa8, /* L1 burst length configuration */ + 0x00, /* not available */ + 0xac, /* L1 color frame buffer address */ + 0xb0, /* L1 color frame buffer length */ + 0xb4, /* L1 color frame buffer line number */ + 0xb8, /* L1 auxiliary frame buffer address 0 */ + 0xbc, /* L1 auxiliary frame buffer address 1 */ + 0xc0, /* L1 auxiliary frame buffer length */ + 0xc4, /* L1 auxiliary frame buffer line number */ + 0xc8, /* L1 CLUT write */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00, /* not available */ + 0x00 /* not available */ +}; + +static const u32 ltdc_layer_regs_a2[] = { + 0x100, /* L1 configuration 0 */ + 0x104, /* L1 configuration 1 */ + 0x108, /* L1 reload control */ + 0x10c, /* L1 control register */ + 0x110, /* L1 window horizontal position configuration */ + 0x114, /* L1 window vertical position configuration */ + 0x118, /* L1 color keying configuration */ + 0x11c, /* L1 pixel format configuration */ + 0x120, /* L1 constant alpha configuration */ + 0x124, /* L1 default color configuration */ + 0x128, /* L1 blending factors configuration */ + 0x12c, /* L1 burst length configuration */ + 0x130, /* L1 planar configuration */ + 0x134, /* L1 color frame buffer address */ + 0x138, /* L1 color frame buffer length */ + 0x13c, /* L1 color frame buffer line number */ + 0x140, /* L1 auxiliary frame buffer address 0 */ + 0x144, /* L1 auxiliary frame buffer address 1 */ + 0x148, /* L1 auxiliary frame buffer length */ + 0x14c, /* L1 auxiliary frame buffer line number */ + 0x150, /* L1 CLUT write */ + 0x16c, /* L1 Conversion YCbCr RGB 0 */ + 0x170, /* L1 Conversion YCbCr RGB 1 */ + 0x174, /* L1 Flexible Pixel Format 0 */ + 0x178 /* L1 Flexible Pixel Format 1 */ +}; + +static const u64 ltdc_format_modifiers[] = { + DRM_FORMAT_MOD_LINEAR, + DRM_FORMAT_MOD_INVALID +}; + +static const struct regmap_config stm32_ltdc_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = sizeof(u32), + .max_register = 0x400, + .use_relaxed_mmio = true, + .cache_type = REGCACHE_NONE, +}; + +static const u32 ltdc_ycbcr2rgb_coeffs[DRM_COLOR_ENCODING_MAX][DRM_COLOR_RANGE_MAX][2] = { + [DRM_COLOR_YCBCR_BT601][DRM_COLOR_YCBCR_LIMITED_RANGE] = { + 0x02040199, /* (b_cb = 516 / r_cr = 409) */ + 0x006400D0 /* (g_cb = 100 / g_cr = 208) */ + }, + [DRM_COLOR_YCBCR_BT601][DRM_COLOR_YCBCR_FULL_RANGE] = { + 0x01C60167, /* (b_cb = 454 / r_cr = 359) */ + 0x005800B7 /* (g_cb = 88 / g_cr = 183) */ + }, + [DRM_COLOR_YCBCR_BT709][DRM_COLOR_YCBCR_LIMITED_RANGE] = { + 0x021D01CB, /* (b_cb = 541 / r_cr = 459) */ + 0x00370089 /* (g_cb = 55 / g_cr = 137) */ + }, + [DRM_COLOR_YCBCR_BT709][DRM_COLOR_YCBCR_FULL_RANGE] = { + 0x01DB0193, /* (b_cb = 475 / r_cr = 403) */ + 0x00300078 /* (g_cb = 48 / g_cr = 120) */ + } + /* BT2020 not supported */ +}; static inline struct ltdc_device *crtc_to_ltdc(struct drm_crtc *crtc) { @@ -289,16 +495,30 @@ static inline enum ltdc_pix_fmt to_ltdc_pixelformat(u32 drm_fmt) case DRM_FORMAT_XRGB8888: pf = PF_ARGB8888; break; + case DRM_FORMAT_ABGR8888: + case DRM_FORMAT_XBGR8888: + pf = PF_ABGR8888; + break; case DRM_FORMAT_RGBA8888: case DRM_FORMAT_RGBX8888: pf = PF_RGBA8888; break; + case DRM_FORMAT_BGRA8888: + case DRM_FORMAT_BGRX8888: + pf = PF_BGRA8888; + break; case DRM_FORMAT_RGB888: pf = PF_RGB888; break; + case DRM_FORMAT_BGR888: + pf = PF_BGR888; + break; case DRM_FORMAT_RGB565: pf = PF_RGB565; break; + case DRM_FORMAT_BGR565: + pf = PF_BGR565; + break; case DRM_FORMAT_ARGB1555: case DRM_FORMAT_XRGB1555: pf = PF_ARGB1555; @@ -319,49 +539,159 @@ static inline enum ltdc_pix_fmt to_ltdc_pixelformat(u32 drm_fmt) return pf; } -static inline u32 to_drm_pixelformat(enum ltdc_pix_fmt pf) +static inline u32 ltdc_set_flexible_pixel_format(struct drm_plane *plane, enum ltdc_pix_fmt pix_fmt) { - switch (pf) { - case PF_ARGB8888: - return DRM_FORMAT_ARGB8888; - case PF_RGBA8888: - return DRM_FORMAT_RGBA8888; - case PF_RGB888: - return DRM_FORMAT_RGB888; - case PF_RGB565: - return DRM_FORMAT_RGB565; + struct ltdc_device *ldev = plane_to_ltdc(plane); + u32 lofs = plane->index * LAY_OFS, ret = PF_FLEXIBLE; + int psize, alen, apos, rlen, rpos, glen, gpos, blen, bpos; + + switch (pix_fmt) { + case PF_BGR888: + psize = 3; + alen = 0; apos = 0; rlen = 8; rpos = 0; + glen = 8; gpos = 8; blen = 8; bpos = 16; + break; case PF_ARGB1555: - return DRM_FORMAT_ARGB1555; + psize = 2; + alen = 1; apos = 15; rlen = 5; rpos = 10; + glen = 5; gpos = 5; blen = 5; bpos = 0; + break; case PF_ARGB4444: - return DRM_FORMAT_ARGB4444; + psize = 2; + alen = 4; apos = 12; rlen = 4; rpos = 8; + glen = 4; gpos = 4; blen = 4; bpos = 0; + break; case PF_L8: - return DRM_FORMAT_C8; - case PF_AL44: /* No DRM support */ - case PF_AL88: /* No DRM support */ - case PF_NONE: + psize = 1; + alen = 0; apos = 0; rlen = 8; rpos = 0; + glen = 8; gpos = 0; blen = 8; bpos = 0; + break; + case PF_AL44: + psize = 1; + alen = 4; apos = 4; rlen = 4; rpos = 0; + glen = 4; gpos = 0; blen = 4; bpos = 0; + break; + case PF_AL88: + psize = 2; + alen = 8; apos = 8; rlen = 8; rpos = 0; + glen = 8; gpos = 0; blen = 8; bpos = 0; + break; default: - return 0; + ret = NB_PF; /* error case, trace msg is handled by the caller */ + break; } + + if (ret == PF_FLEXIBLE) { + regmap_write(ldev->regmap, LTDC_L1FPF0R + lofs, + (rlen << 14) + (rpos << 9) + (alen << 5) + apos); + + regmap_write(ldev->regmap, LTDC_L1FPF1R + lofs, + (psize << 18) + (blen << 14) + (bpos << 9) + (glen << 5) + gpos); + } + + return ret; } -static inline u32 get_pixelformat_without_alpha(u32 drm) +/* + * All non-alpha color formats derived from native alpha color formats are + * either characterized by a FourCC format code + */ +static inline u32 is_xrgb(u32 drm) { - switch (drm) { - case DRM_FORMAT_ARGB4444: - return DRM_FORMAT_XRGB4444; - case DRM_FORMAT_RGBA4444: - return DRM_FORMAT_RGBX4444; - case DRM_FORMAT_ARGB1555: - return DRM_FORMAT_XRGB1555; - case DRM_FORMAT_RGBA5551: - return DRM_FORMAT_RGBX5551; - case DRM_FORMAT_ARGB8888: - return DRM_FORMAT_XRGB8888; - case DRM_FORMAT_RGBA8888: - return DRM_FORMAT_RGBX8888; + return ((drm & 0xFF) == 'X' || ((drm >> 8) & 0xFF) == 'X'); +} + +static inline void ltdc_set_ycbcr_config(struct drm_plane *plane, u32 drm_pix_fmt) +{ + struct ltdc_device *ldev = plane_to_ltdc(plane); + struct drm_plane_state *state = plane->state; + u32 lofs = plane->index * LAY_OFS; + u32 val; + + switch (drm_pix_fmt) { + case DRM_FORMAT_YUYV: + val = (YCM_I << 4) | LxPCR_YF | LxPCR_CBF; + break; + case DRM_FORMAT_YVYU: + val = (YCM_I << 4) | LxPCR_YF; + break; + case DRM_FORMAT_UYVY: + val = (YCM_I << 4) | LxPCR_CBF; + break; + case DRM_FORMAT_VYUY: + val = (YCM_I << 4); + break; + case DRM_FORMAT_NV12: + val = (YCM_SP << 4) | LxPCR_CBF; + break; + case DRM_FORMAT_NV21: + val = (YCM_SP << 4); + break; + case DRM_FORMAT_YUV420: + case DRM_FORMAT_YVU420: + val = (YCM_FP << 4); + break; default: - return 0; + /* RGB or not a YCbCr supported format */ + DRM_ERROR("Unsupported pixel format: %u\n", drm_pix_fmt); + return; + } + + /* Enable limited range */ + if (state->color_range == DRM_COLOR_YCBCR_LIMITED_RANGE) + val |= LxPCR_YREN; + + /* enable ycbcr conversion */ + val |= LxPCR_YCEN; + + regmap_write(ldev->regmap, LTDC_L1PCR + lofs, val); +} + +static inline void ltdc_set_ycbcr_coeffs(struct drm_plane *plane) +{ + struct ltdc_device *ldev = plane_to_ltdc(plane); + struct drm_plane_state *state = plane->state; + enum drm_color_encoding enc = state->color_encoding; + enum drm_color_range ran = state->color_range; + u32 lofs = plane->index * LAY_OFS; + + if (enc != DRM_COLOR_YCBCR_BT601 && enc != DRM_COLOR_YCBCR_BT709) { + DRM_ERROR("color encoding %d not supported, use bt601 by default\n", enc); + /* set by default color encoding to DRM_COLOR_YCBCR_BT601 */ + enc = DRM_COLOR_YCBCR_BT601; + } + + if (ran != DRM_COLOR_YCBCR_LIMITED_RANGE && ran != DRM_COLOR_YCBCR_FULL_RANGE) { + DRM_ERROR("color range %d not supported, use limited range by default\n", ran); + /* set by default color range to DRM_COLOR_YCBCR_LIMITED_RANGE */ + ran = DRM_COLOR_YCBCR_LIMITED_RANGE; + } + + DRM_DEBUG_DRIVER("Color encoding=%d, range=%d\n", enc, ran); + regmap_write(ldev->regmap, LTDC_L1CYR0R + lofs, + ltdc_ycbcr2rgb_coeffs[enc][ran][0]); + regmap_write(ldev->regmap, LTDC_L1CYR1R + lofs, + ltdc_ycbcr2rgb_coeffs[enc][ran][1]); +} + +static inline void ltdc_irq_crc_handle(struct ltdc_device *ldev, + struct drm_crtc *crtc) +{ + u32 crc; + int ret; + + if (ldev->crc_skip_count < CRC_SKIP_FRAMES) { + ldev->crc_skip_count++; + return; } + + /* Get the CRC of the frame */ + ret = regmap_read(ldev->regmap, LTDC_CCRCR, &crc); + if (ret) + return; + + /* Report to DRM the CRC (hw dependent feature) */ + drm_crtc_add_crc_entry(crtc, true, drm_crtc_accurate_vblank_count(crtc), &crc); } static irqreturn_t ltdc_irq_thread(int irq, void *arg) @@ -371,9 +701,14 @@ static irqreturn_t ltdc_irq_thread(int irq, void *arg) struct drm_crtc *crtc = drm_crtc_from_index(ddev, 0); /* Line IRQ : trigger the vblank event */ - if (ldev->irq_status & ISR_LIF) + if (ldev->irq_status & ISR_LIF) { drm_crtc_handle_vblank(crtc); + /* Early return if CRC is not active */ + if (ldev->crc_active) + ltdc_irq_crc_handle(ldev, crtc); + } + /* Save FIFO Underrun & Transfer Error status */ mutex_lock(&ldev->err_lock); if (ldev->irq_status & ISR_FUIF) @@ -390,9 +725,13 @@ static irqreturn_t ltdc_irq(int irq, void *arg) struct drm_device *ddev = arg; struct ltdc_device *ldev = ddev->dev_private; - /* Read & Clear the interrupt status */ - ldev->irq_status = reg_read(ldev->regs, LTDC_ISR); - reg_write(ldev->regs, LTDC_ICR, ldev->irq_status); + /* + * Read & Clear the interrupt status + * In order to write / read registers in this critical section + * very quickly, the regmap functions are not used. + */ + ldev->irq_status = readl_relaxed(ldev->regs + LTDC_ISR); + writel_relaxed(ldev->irq_status, ldev->regs + LTDC_ICR); return IRQ_WAKE_THREAD; } @@ -416,7 +755,7 @@ static void ltdc_crtc_update_clut(struct drm_crtc *crtc) for (i = 0; i < CLUT_SIZE; i++, lut++) { val = ((lut->red << 8) & 0xff0000) | (lut->green & 0xff00) | (lut->blue >> 8) | (i << 24); - reg_write(ldev->regs, LTDC_L1CLUTWR, val); + regmap_write(ldev->regmap, LTDC_L1CLUTWR, val); } } @@ -431,13 +770,14 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc, pm_runtime_get_sync(ddev->dev); /* Sets the background color value */ - reg_write(ldev->regs, LTDC_BCCR, BCCR_BCBLACK); + regmap_write(ldev->regmap, LTDC_BCCR, BCCR_BCBLACK); /* Enable IRQ */ - reg_set(ldev->regs, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE); + regmap_set_bits(ldev->regmap, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE); /* Commit shadow registers = update planes at next vblank */ - reg_set(ldev->regs, LTDC_SRCR, SRCR_VBR); + if (!ldev->caps.plane_reg_shadow) + regmap_set_bits(ldev->regmap, LTDC_SRCR, SRCR_VBR); drm_crtc_vblank_on(crtc); } @@ -453,10 +793,11 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc, drm_crtc_vblank_off(crtc); /* disable IRQ */ - reg_clear(ldev->regs, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE); + regmap_clear_bits(ldev->regmap, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE); /* immediately commit disable of layers before switching off LTDC */ - reg_set(ldev->regs, LTDC_SRCR, SRCR_IMR); + if (!ldev->caps.plane_reg_shadow) + regmap_set_bits(ldev->regmap, LTDC_SRCR, SRCR_IMR); pm_runtime_put_sync(ddev->dev); } @@ -533,6 +874,7 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc) struct drm_display_mode *mode = &crtc->state->adjusted_mode; u32 hsync, vsync, accum_hbp, accum_vbp, accum_act_w, accum_act_h; u32 total_width, total_height; + u32 bus_formats = MEDIA_BUS_FMT_RGB888_1X24; u32 bus_flags = 0; u32 val; int ret; @@ -558,8 +900,11 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc) if (bridge && bridge->timings) bus_flags = bridge->timings->input_bus_flags; - else if (connector) + else if (connector) { bus_flags = connector->display_info.bus_flags; + if (connector->display_info.num_bus_formats) + bus_formats = connector->display_info.bus_formats[0]; + } if (!pm_runtime_active(ddev->dev)) { ret = pm_runtime_get_sync(ddev->dev); @@ -604,26 +949,56 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc) if (bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE) val |= GCR_PCPOL; - reg_update_bits(ldev->regs, LTDC_GCR, - GCR_HSPOL | GCR_VSPOL | GCR_DEPOL | GCR_PCPOL, val); + regmap_update_bits(ldev->regmap, LTDC_GCR, + GCR_HSPOL | GCR_VSPOL | GCR_DEPOL | GCR_PCPOL, val); /* Set Synchronization size */ val = (hsync << 16) | vsync; - reg_update_bits(ldev->regs, LTDC_SSCR, SSCR_VSH | SSCR_HSW, val); + regmap_update_bits(ldev->regmap, LTDC_SSCR, SSCR_VSH | SSCR_HSW, val); /* Set Accumulated Back porch */ val = (accum_hbp << 16) | accum_vbp; - reg_update_bits(ldev->regs, LTDC_BPCR, BPCR_AVBP | BPCR_AHBP, val); + regmap_update_bits(ldev->regmap, LTDC_BPCR, BPCR_AVBP | BPCR_AHBP, val); /* Set Accumulated Active Width */ val = (accum_act_w << 16) | accum_act_h; - reg_update_bits(ldev->regs, LTDC_AWCR, AWCR_AAW | AWCR_AAH, val); + regmap_update_bits(ldev->regmap, LTDC_AWCR, AWCR_AAW | AWCR_AAH, val); /* Set total width & height */ val = (total_width << 16) | total_height; - reg_update_bits(ldev->regs, LTDC_TWCR, TWCR_TOTALH | TWCR_TOTALW, val); + regmap_update_bits(ldev->regmap, LTDC_TWCR, TWCR_TOTALH | TWCR_TOTALW, val); - reg_write(ldev->regs, LTDC_LIPCR, (accum_act_h + 1)); + regmap_write(ldev->regmap, LTDC_LIPCR, (accum_act_h + 1)); + + /* Configure the output format (hw version dependent) */ + if (ldev->caps.ycbcr_output) { + /* Input video dynamic_range & colorimetry */ + int vic = drm_match_cea_mode(mode); + u32 val; + + if (vic == 6 || vic == 7 || vic == 21 || vic == 22 || + vic == 2 || vic == 3 || vic == 17 || vic == 18) + /* ITU-R BT.601 */ + val = 0; + else + /* ITU-R BT.709 */ + val = EDCR_OCYSEL; + + switch (bus_formats) { + case MEDIA_BUS_FMT_YUYV8_1X16: + /* enable ycbcr output converter */ + regmap_write(ldev->regmap, LTDC_EDCR, EDCR_OCYEN | val); + break; + case MEDIA_BUS_FMT_YVYU8_1X16: + /* enable ycbcr output converter & invert chrominance order */ + regmap_write(ldev->regmap, LTDC_EDCR, EDCR_OCYEN | EDCR_OCYCO | val); + break; + default: + /* disable ycbcr output converter */ + regmap_write(ldev->regmap, LTDC_EDCR, 0); + break; + } + } } static void ltdc_crtc_atomic_flush(struct drm_crtc *crtc, @@ -638,7 +1013,8 @@ static void ltdc_crtc_atomic_flush(struct drm_crtc *crtc, ltdc_crtc_update_clut(crtc); /* Commit shadow registers = update planes at next vblank */ - reg_set(ldev->regs, LTDC_SRCR, SRCR_VBR); + if (!ldev->caps.plane_reg_shadow) + regmap_set_bits(ldev->regmap, LTDC_SRCR, SRCR_VBR); if (event) { crtc->state->event = NULL; @@ -680,10 +1056,14 @@ static bool ltdc_crtc_get_scanout_position(struct drm_crtc *crtc, * simplify the code and only test if line > vactive_end */ if (pm_runtime_active(ddev->dev)) { - line = reg_read(ldev->regs, LTDC_CPSR) & CPSR_CYPOS; - vactive_start = reg_read(ldev->regs, LTDC_BPCR) & BPCR_AVBP; - vactive_end = reg_read(ldev->regs, LTDC_AWCR) & AWCR_AAH; - vtotal = reg_read(ldev->regs, LTDC_TWCR) & TWCR_TOTALH; + regmap_read(ldev->regmap, LTDC_CPSR, &line); + line &= CPSR_CYPOS; + regmap_read(ldev->regmap, LTDC_BPCR, &vactive_start); + vactive_start &= BPCR_AVBP; + regmap_read(ldev->regmap, LTDC_AWCR, &vactive_end); + vactive_end &= AWCR_AAH; + regmap_read(ldev->regmap, LTDC_TWCR, &vtotal); + vtotal &= TWCR_TOTALH; if (line > vactive_end) *vpos = line - vtotal - vactive_start; @@ -719,7 +1099,7 @@ static int ltdc_crtc_enable_vblank(struct drm_crtc *crtc) DRM_DEBUG_DRIVER("\n"); if (state->enable) - reg_set(ldev->regs, LTDC_IER, IER_LIE); + regmap_set_bits(ldev->regmap, LTDC_IER, IER_LIE); else return -EPERM; @@ -731,7 +1111,49 @@ static void ltdc_crtc_disable_vblank(struct drm_crtc *crtc) struct ltdc_device *ldev = crtc_to_ltdc(crtc); DRM_DEBUG_DRIVER("\n"); - reg_clear(ldev->regs, LTDC_IER, IER_LIE); + regmap_clear_bits(ldev->regmap, LTDC_IER, IER_LIE); +} + +static int ltdc_crtc_set_crc_source(struct drm_crtc *crtc, const char *source) +{ + struct ltdc_device *ldev = crtc_to_ltdc(crtc); + int ret; + + DRM_DEBUG_DRIVER("\n"); + + if (!crtc) + return -ENODEV; + + if (source && strcmp(source, "auto") == 0) { + ldev->crc_active = true; + ret = regmap_set_bits(ldev->regmap, LTDC_GCR, GCR_CRCEN); + } else if (!source) { + ldev->crc_active = false; + ret = regmap_clear_bits(ldev->regmap, LTDC_GCR, GCR_CRCEN); + } else { + ret = -EINVAL; + } + + ldev->crc_skip_count = 0; + return ret; +} + +static int ltdc_crtc_verify_crc_source(struct drm_crtc *crtc, + const char *source, size_t *values_cnt) +{ + DRM_DEBUG_DRIVER("\n"); + + if (!crtc) + return -ENODEV; + + if (source && strcmp(source, "auto") != 0) { + DRM_DEBUG_DRIVER("Unknown CRC source %s for %s\n", + source, crtc->name); + return -EINVAL; + } + + *values_cnt = 1; + return 0; } static const struct drm_crtc_funcs ltdc_crtc_funcs = { @@ -746,6 +1168,20 @@ static const struct drm_crtc_funcs ltdc_crtc_funcs = { .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, }; +static const struct drm_crtc_funcs ltdc_crtc_with_crc_support_funcs = { + .destroy = drm_crtc_cleanup, + .set_config = drm_atomic_helper_set_config, + .page_flip = drm_atomic_helper_page_flip, + .reset = drm_atomic_helper_crtc_reset, + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, + .enable_vblank = ltdc_crtc_enable_vblank, + .disable_vblank = ltdc_crtc_disable_vblank, + .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, + .set_crc_source = ltdc_crtc_set_crc_source, + .verify_crc_source = ltdc_crtc_verify_crc_source, +}; + /* * DRM_PLANE */ @@ -789,7 +1225,7 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, u32 y0 = newstate->crtc_y; u32 y1 = newstate->crtc_y + newstate->crtc_h - 1; u32 src_x, src_y, src_w, src_h; - u32 val, pitch_in_bytes, line_length, paddr, ahbp, avbp, bpcr; + u32 val, pitch_in_bytes, line_length, line_number, paddr, ahbp, avbp, bpcr; enum ltdc_pix_fmt pf; if (!newstate->crtc || !fb) { @@ -809,19 +1245,20 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, newstate->crtc_w, newstate->crtc_h, newstate->crtc_x, newstate->crtc_y); - bpcr = reg_read(ldev->regs, LTDC_BPCR); + regmap_read(ldev->regmap, LTDC_BPCR, &bpcr); + ahbp = (bpcr & BPCR_AHBP) >> 16; avbp = bpcr & BPCR_AVBP; /* Configures the horizontal start and stop position */ val = ((x1 + 1 + ahbp) << 16) + (x0 + 1 + ahbp); - reg_update_bits(ldev->regs, LTDC_L1WHPCR + lofs, - LXWHPCR_WHSTPOS | LXWHPCR_WHSPPOS, val); + regmap_write_bits(ldev->regmap, LTDC_L1WHPCR + lofs, + LXWHPCR_WHSTPOS | LXWHPCR_WHSPPOS, val); /* Configures the vertical start and stop position */ val = ((y1 + 1 + avbp) << 16) + (y0 + 1 + avbp); - reg_update_bits(ldev->regs, LTDC_L1WVPCR + lofs, - LXWVPCR_WVSTPOS | LXWVPCR_WVSPPOS, val); + regmap_write_bits(ldev->regmap, LTDC_L1WVPCR + lofs, + LXWVPCR_WVSTPOS | LXWVPCR_WVSPPOS, val); /* Specifies the pixel format */ pf = to_ltdc_pixelformat(fb->format->format); @@ -829,24 +1266,27 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, if (ldev->caps.pix_fmt_hw[val] == pf) break; + /* Use the flexible color format feature if necessary and available */ + if (ldev->caps.pix_fmt_flex && val == NB_PF) + val = ltdc_set_flexible_pixel_format(plane, pf); + if (val == NB_PF) { DRM_ERROR("Pixel format %.4s not supported\n", (char *)&fb->format->format); val = 0; /* set by default ARGB 32 bits */ } - reg_update_bits(ldev->regs, LTDC_L1PFCR + lofs, LXPFCR_PF, val); + regmap_write_bits(ldev->regmap, LTDC_L1PFCR + lofs, LXPFCR_PF, val); /* Configures the color frame buffer pitch in bytes & line length */ pitch_in_bytes = fb->pitches[0]; line_length = fb->format->cpp[0] * (x1 - x0 + 1) + (ldev->caps.bus_width >> 3) - 1; val = ((pitch_in_bytes << 16) | line_length); - reg_update_bits(ldev->regs, LTDC_L1CFBLR + lofs, - LXCFBLR_CFBLL | LXCFBLR_CFBP, val); + regmap_write_bits(ldev->regmap, LTDC_L1CFBLR + lofs, LXCFBLR_CFBLL | LXCFBLR_CFBP, val); /* Specifies the constant alpha value */ val = newstate->alpha >> 8; - reg_update_bits(ldev->regs, LTDC_L1CACR + lofs, LXCACR_CONSTA, val); + regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, val); /* Specifies the blending factors */ val = BF1_PAXCA | BF2_1PAXCA; @@ -858,24 +1298,98 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, plane->type != DRM_PLANE_TYPE_PRIMARY) val = BF1_PAXCA | BF2_1PAXCA; - reg_update_bits(ldev->regs, LTDC_L1BFCR + lofs, - LXBFCR_BF2 | LXBFCR_BF1, val); + regmap_write_bits(ldev->regmap, LTDC_L1BFCR + lofs, LXBFCR_BF2 | LXBFCR_BF1, val); /* Configures the frame buffer line number */ - val = y1 - y0 + 1; - reg_update_bits(ldev->regs, LTDC_L1CFBLNR + lofs, LXCFBLNR_CFBLN, val); + line_number = y1 - y0 + 1; + regmap_write_bits(ldev->regmap, LTDC_L1CFBLNR + lofs, LXCFBLNR_CFBLN, line_number); /* Sets the FB address */ paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 0); DRM_DEBUG_DRIVER("fb: phys 0x%08x", paddr); - reg_write(ldev->regs, LTDC_L1CFBAR + lofs, paddr); + regmap_write(ldev->regmap, LTDC_L1CFBAR + lofs, paddr); + + if (ldev->caps.ycbcr_input) { + if (fb->format->is_yuv) { + switch (fb->format->format) { + case DRM_FORMAT_NV12: + case DRM_FORMAT_NV21: + /* Configure the auxiliary frame buffer address 0 & 1 */ + paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); + regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr + 1); + + /* Configure the buffer length */ + val = ((pitch_in_bytes << 16) | line_length); + regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + + /* Configure the frame buffer line number */ + val = (line_number >> 1); + regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + break; + case DRM_FORMAT_YUV420: + /* Configure the auxiliary frame buffer address 0 */ + paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); + + /* Configure the auxiliary frame buffer address 1 */ + paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); + regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr); + + line_length = ((fb->format->cpp[0] * (x1 - x0 + 1)) >> 1) + + (ldev->caps.bus_width >> 3) - 1; + + /* Configure the buffer length */ + val = (((pitch_in_bytes >> 1) << 16) | line_length); + regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + + /* Configure the frame buffer line number */ + val = (line_number >> 1); + regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + break; + case DRM_FORMAT_YVU420: + /* Configure the auxiliary frame buffer address 0 */ + paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); + + /* Configure the auxiliary frame buffer address 1 */ + paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); + regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr); + + line_length = ((fb->format->cpp[0] * (x1 - x0 + 1)) >> 1) + + (ldev->caps.bus_width >> 3) - 1; + + /* Configure the buffer length */ + val = (((pitch_in_bytes >> 1) << 16) | line_length); + regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + + /* Configure the frame buffer line number */ + val = (line_number >> 1); + regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + break; + } + + /* Configure YCbC conversion coefficient */ + ltdc_set_ycbcr_coeffs(plane); + + /* Configure YCbCr format and enable/disable conversion */ + ltdc_set_ycbcr_config(plane, fb->format->format); + } else { + /* disable ycbcr conversion */ + regmap_write(ldev->regmap, LTDC_L1PCR + lofs, 0); + } + } /* Enable layer and CLUT if needed */ val = fb->format->format == DRM_FORMAT_C8 ? LXCR_CLUTEN : 0; val |= LXCR_LEN; - reg_update_bits(ldev->regs, LTDC_L1CR + lofs, - LXCR_LEN | LXCR_CLUTEN, val); + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN, val); + + /* Commit shadow registers = update plane at next vblank */ + if (ldev->caps.plane_reg_shadow) + regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs, + LXRCR_IMR | LXRCR_VBR | LXRCR_GRMSK, LXRCR_VBR); ldev->plane_fpsi[plane->index].counter++; @@ -900,7 +1414,12 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, u32 lofs = plane->index * LAY_OFS; /* disable layer */ - reg_clear(ldev->regs, LTDC_L1CR + lofs, LXCR_LEN); + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN, 0); + + /* Commit shadow registers = update plane at next vblank */ + if (ldev->caps.plane_reg_shadow) + regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs, + LXRCR_IMR | LXRCR_VBR | LXRCR_GRMSK, LXRCR_VBR); DRM_DEBUG_DRIVER("CRTC:%d plane:%d\n", oldstate->crtc->base.id, plane->base.id); @@ -925,16 +1444,6 @@ static void ltdc_plane_atomic_print_state(struct drm_printer *p, fpsi->counter = 0; } -static bool ltdc_plane_format_mod_supported(struct drm_plane *plane, - u32 format, - u64 modifier) -{ - if (modifier == DRM_FORMAT_MOD_LINEAR) - return true; - - return false; -} - static const struct drm_plane_funcs ltdc_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, @@ -943,7 +1452,6 @@ static const struct drm_plane_funcs ltdc_plane_funcs = { .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, .atomic_print_state = ltdc_plane_atomic_print_state, - .format_mod_supported = ltdc_plane_format_mod_supported, }; static const struct drm_plane_helper_funcs ltdc_plane_helper_funcs = { @@ -953,36 +1461,58 @@ static const struct drm_plane_helper_funcs ltdc_plane_helper_funcs = { }; static struct drm_plane *ltdc_plane_create(struct drm_device *ddev, - enum drm_plane_type type) + enum drm_plane_type type, + int index) { unsigned long possible_crtcs = CRTC_MASK; struct ltdc_device *ldev = ddev->dev_private; struct device *dev = ddev->dev; struct drm_plane *plane; unsigned int i, nb_fmt = 0; - u32 formats[NB_PF * 2]; - u32 drm_fmt, drm_fmt_no_alpha; + u32 *formats; + u32 drm_fmt; const u64 *modifiers = ltdc_format_modifiers; + u32 lofs = index * LAY_OFS; + u32 val; int ret; - /* Get supported pixel formats */ - for (i = 0; i < NB_PF; i++) { - drm_fmt = to_drm_pixelformat(ldev->caps.pix_fmt_hw[i]); - if (!drm_fmt) - continue; - formats[nb_fmt++] = drm_fmt; + /* Allocate the biggest size according to supported color formats */ + formats = devm_kzalloc(dev, (ldev->caps.pix_fmt_nb + + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_cp) + + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_sp) + + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_fp)) * + sizeof(*formats), GFP_KERNEL); - /* Add the no-alpha related format if any & supported */ - drm_fmt_no_alpha = get_pixelformat_without_alpha(drm_fmt); - if (!drm_fmt_no_alpha) - continue; + for (i = 0; i < ldev->caps.pix_fmt_nb; i++) { + drm_fmt = ldev->caps.pix_fmt_drm[i]; /* Manage hw-specific capabilities */ - if (ldev->caps.non_alpha_only_l1 && - type != DRM_PLANE_TYPE_PRIMARY) - continue; + if (ldev->caps.non_alpha_only_l1) + /* XR24 & RX24 like formats supported only on primary layer */ + if (type != DRM_PLANE_TYPE_PRIMARY && is_xrgb(drm_fmt)) + continue; + + formats[nb_fmt++] = drm_fmt; + } - formats[nb_fmt++] = drm_fmt_no_alpha; + /* Add YCbCr supported pixel formats */ + if (ldev->caps.ycbcr_input) { + regmap_read(ldev->regmap, LTDC_L1C1R + lofs, &val); + if (val & LXCR_C1R_YIA) { + memcpy(&formats[nb_fmt], ltdc_drm_fmt_ycbcr_cp, + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_cp) * sizeof(*formats)); + nb_fmt += ARRAY_SIZE(ltdc_drm_fmt_ycbcr_cp); + } + if (val & LXCR_C1R_YSPA) { + memcpy(&formats[nb_fmt], ltdc_drm_fmt_ycbcr_sp, + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_sp) * sizeof(*formats)); + nb_fmt += ARRAY_SIZE(ltdc_drm_fmt_ycbcr_sp); + } + if (val & LXCR_C1R_YFPA) { + memcpy(&formats[nb_fmt], ltdc_drm_fmt_ycbcr_fp, + ARRAY_SIZE(ltdc_drm_fmt_ycbcr_fp) * sizeof(*formats)); + nb_fmt += ARRAY_SIZE(ltdc_drm_fmt_ycbcr_fp); + } } plane = devm_kzalloc(dev, sizeof(*plane), GFP_KERNEL); @@ -995,6 +1525,17 @@ static struct drm_plane *ltdc_plane_create(struct drm_device *ddev, if (ret < 0) return NULL; + if (ldev->caps.ycbcr_input) { + if (val & (LXCR_C1R_YIA | LXCR_C1R_YSPA | LXCR_C1R_YFPA)) + drm_plane_create_color_properties(plane, + BIT(DRM_COLOR_YCBCR_BT601) | + BIT(DRM_COLOR_YCBCR_BT709), + BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) | + BIT(DRM_COLOR_YCBCR_FULL_RANGE), + DRM_COLOR_YCBCR_BT601, + DRM_COLOR_YCBCR_LIMITED_RANGE); + } + drm_plane_helper_add(plane, <dc_plane_helper_funcs); drm_plane_create_alpha_property(plane); @@ -1020,7 +1561,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) unsigned int i; int ret; - primary = ltdc_plane_create(ddev, DRM_PLANE_TYPE_PRIMARY); + primary = ltdc_plane_create(ddev, DRM_PLANE_TYPE_PRIMARY, 0); if (!primary) { DRM_ERROR("Can not create primary plane\n"); return -EINVAL; @@ -1028,8 +1569,13 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) drm_plane_create_zpos_immutable_property(primary, 0); - ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL, - <dc_crtc_funcs, NULL); + /* Init CRTC according to its hardware features */ + if (ldev->caps.crc) + ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL, + <dc_crtc_with_crc_support_funcs, NULL); + else + ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL, + <dc_crtc_funcs, NULL); if (ret) { DRM_ERROR("Can not initialize CRTC\n"); goto cleanup; @@ -1044,7 +1590,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) /* Add planes. Note : the first layer is used by primary plane */ for (i = 1; i < ldev->caps.nb_layers; i++) { - overlay = ltdc_plane_create(ddev, DRM_PLANE_TYPE_OVERLAY); + overlay = ltdc_plane_create(ddev, DRM_PLANE_TYPE_OVERLAY, i); if (!overlay) { ret = -ENOMEM; DRM_ERROR("Can not create overlay plane %d\n", i); @@ -1068,7 +1614,7 @@ static void ltdc_encoder_disable(struct drm_encoder *encoder) DRM_DEBUG_DRIVER("\n"); /* Disable LTDC */ - reg_clear(ldev->regs, LTDC_GCR, GCR_LTDCEN); + regmap_clear_bits(ldev->regmap, LTDC_GCR, GCR_LTDCEN); /* Set to sleep state the pinctrl whatever type of encoder */ pinctrl_pm_select_sleep_state(ddev->dev); @@ -1082,7 +1628,7 @@ static void ltdc_encoder_enable(struct drm_encoder *encoder) DRM_DEBUG_DRIVER("\n"); /* Enable LTDC */ - reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN); + regmap_set_bits(ldev->regmap, LTDC_GCR, GCR_LTDCEN); } static void ltdc_encoder_mode_set(struct drm_encoder *encoder, @@ -1145,21 +1691,25 @@ static int ltdc_get_caps(struct drm_device *ddev) * at least 1 layer must be managed & the number of layers * must not exceed LTDC_MAX_LAYER */ - lcr = reg_read(ldev->regs, LTDC_LCR); + regmap_read(ldev->regmap, LTDC_LCR, &lcr); ldev->caps.nb_layers = clamp((int)lcr, 1, LTDC_MAX_LAYER); /* set data bus width */ - gc2r = reg_read(ldev->regs, LTDC_GC2R); + regmap_read(ldev->regmap, LTDC_GC2R, &gc2r); bus_width_log2 = (gc2r & GC2R_BW) >> 4; ldev->caps.bus_width = 8 << bus_width_log2; - ldev->caps.hw_version = reg_read(ldev->regs, LTDC_IDR); + regmap_read(ldev->regmap, LTDC_IDR, &ldev->caps.hw_version); switch (ldev->caps.hw_version) { case HWVER_10200: case HWVER_10300: - ldev->caps.reg_ofs = REG_OFS_NONE; + ldev->caps.layer_ofs = LAY_OFS_0; + ldev->caps.layer_regs = ltdc_layer_regs_a0; ldev->caps.pix_fmt_hw = ltdc_pix_fmt_a0; + ldev->caps.pix_fmt_drm = ltdc_drm_fmt_a0; + ldev->caps.pix_fmt_nb = ARRAY_SIZE(ltdc_drm_fmt_a0); + ldev->caps.pix_fmt_flex = false; /* * Hw older versions support non-alpha color formats derived * from native alpha color formats only on the primary layer. @@ -1172,13 +1722,40 @@ static int ltdc_get_caps(struct drm_device *ddev) if (ldev->caps.hw_version == HWVER_10200) ldev->caps.pad_max_freq_hz = 65000000; ldev->caps.nb_irq = 2; + ldev->caps.ycbcr_input = false; + ldev->caps.ycbcr_output = false; + ldev->caps.plane_reg_shadow = false; + ldev->caps.crc = false; break; case HWVER_20101: - ldev->caps.reg_ofs = REG_OFS_4; + ldev->caps.layer_ofs = LAY_OFS_0; + ldev->caps.layer_regs = ltdc_layer_regs_a1; ldev->caps.pix_fmt_hw = ltdc_pix_fmt_a1; + ldev->caps.pix_fmt_drm = ltdc_drm_fmt_a1; + ldev->caps.pix_fmt_nb = ARRAY_SIZE(ltdc_drm_fmt_a1); + ldev->caps.pix_fmt_flex = false; ldev->caps.non_alpha_only_l1 = false; ldev->caps.pad_max_freq_hz = 150000000; ldev->caps.nb_irq = 4; + ldev->caps.ycbcr_input = false; + ldev->caps.ycbcr_output = false; + ldev->caps.plane_reg_shadow = false; + ldev->caps.crc = false; + break; + case HWVER_40100: + ldev->caps.layer_ofs = LAY_OFS_1; + ldev->caps.layer_regs = ltdc_layer_regs_a2; + ldev->caps.pix_fmt_hw = ltdc_pix_fmt_a2; + ldev->caps.pix_fmt_drm = ltdc_drm_fmt_a2; + ldev->caps.pix_fmt_nb = ARRAY_SIZE(ltdc_drm_fmt_a2); + ldev->caps.pix_fmt_flex = true; + ldev->caps.non_alpha_only_l1 = false; + ldev->caps.pad_max_freq_hz = 90000000; + ldev->caps.nb_irq = 2; + ldev->caps.ycbcr_input = true; + ldev->caps.ycbcr_output = true; + ldev->caps.plane_reg_shadow = true; + ldev->caps.crc = true; break; default: return -ENODEV; @@ -1296,9 +1873,15 @@ int ltdc_load(struct drm_device *ddev) goto err; } + ldev->regmap = devm_regmap_init_mmio(&pdev->dev, ldev->regs, &stm32_ltdc_regmap_cfg); + if (IS_ERR(ldev->regmap)) { + DRM_ERROR("Unable to regmap ltdc registers\n"); + ret = PTR_ERR(ldev->regmap); + goto err; + } + /* Disable interrupts */ - reg_clear(ldev->regs, LTDC_IER, - IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); + regmap_clear_bits(ldev->regmap, LTDC_IER, IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); ret = ltdc_get_caps(ddev); if (ret) { |