Clean the crtc_enable by using the proper crtc_state instead of the state of the primary plane state data.

Also fix the dependency to commit the plane changes even if enable is called after the flush.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/gpu/drm/meson/meson_crtc.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c index 0fe49ec..c986eb0 100644 --- a/drivers/gpu/drm/meson/meson_crtc.c +++ b/drivers/gpu/drm/meson/meson_crtc.c @@ -82,11 +82,18 @@ static void meson_crtc_disable_vblank(struct drm_crtc *crtc) static void meson_crtc_enable(struct drm_crtc *crtc) { struct meson_crtc *meson_crtc = to_meson_crtc(crtc); - struct drm_plane *plane = meson_crtc->priv->primary_plane; + struct drm_crtc_state *crtc_state = crtc->state; struct meson_drm *priv = meson_crtc->priv;

+ DRM_DEBUG_DRIVER("\n"); + + if (!crtc_state) { + DRM_ERROR("Invalid crtc_state\n"); + return; + } + /* Enable VPP Postblend */ - writel(plane->state->crtc_w, + writel(crtc_state->mode.hdisplay, priv->io_base + _REG(VPP_POSTBLEND_H_SIZE));

writel_bits_relaxed(VPP_POSTBLEND_ENABLE, VPP_POSTBLEND_ENABLE, @@ -101,6 +108,7 @@ static void meson_crtc_disable(struct drm_crtc *crtc) struct meson_drm *priv = meson_crtc->priv;

priv->viu.osd1_enabled = false; + priv->viu.osd1_commit = false;

/* Disable VPP Postblend */ writel_bits_relaxed(VPP_POSTBLEND_ENABLE, 0, @@ -137,8 +145,7 @@ static void meson_crtc_atomic_flush(struct drm_crtc *crtc, struct meson_crtc *meson_crtc = to_meson_crtc(crtc); struct meson_drm *priv = meson_crtc->priv;

- if (priv->viu.osd1_enabled) - priv->viu.osd1_commit = true; + priv->viu.osd1_commit = true; }

static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = {

Add missing VPU HDMI register.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/gpu/drm/meson/meson_registers.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h index 6adf9c1..2847381 100644 --- a/drivers/gpu/drm/meson/meson_registers.h +++ b/drivers/gpu/drm/meson/meson_registers.h @@ -1319,6 +1319,7 @@ #define VPU_MISC_CTRL 0x2740 #define VPU_ISP_GCLK_CTRL0 0x2741 #define VPU_ISP_GCLK_CTRL1 0x2742 +#define VPU_HDMI_FMT_CTRL 0x2743 #define VPU_VDIN_ASYNC_HOLD_CTRL 0x2743 #define VPU_VDISP_ASYNC_HOLD_CTRL 0x2744 #define VPU_VPUARB2_ASYNC_HOLD_CTRL 0x2745

This patchs adds support for the supported HDMI modes clocks frequencies.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/gpu/drm/meson/meson_vclk.c | 624 +++++++++++++++++++++++++++++++- drivers/gpu/drm/meson/meson_vclk.h | 6 +- drivers/gpu/drm/meson/meson_venc_cvbs.c | 9 +- 3 files changed, 623 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c index 252cfd4..3731479 100644 --- a/drivers/gpu/drm/meson/meson_vclk.c +++ b/drivers/gpu/drm/meson/meson_vclk.c @@ -27,9 +27,26 @@ * VCLK is the "Pixel Clock" frequency generator from a dedicated PLL. * We handle the following encodings : * - CVBS 27MHz generator via the VCLK2 to the VENCI and VDAC blocks - * - * What is missing : * - HDMI Pixel Clocks generation + * What is missing : + * - Genenate Pixel clocks for 2K/4K 10bit formats + * + * Clock generator scheme : + * __________ _________ _____ + * | | | | | |--ENCI + * | HDMI PLL |-| PLL_DIV |--- VCLK--| |--ENCL + * |__________| |_________| \ | MUX |--ENCP + * --VCLK2-| |--VDAC + * |_____|--HDMI-TX + * + * Final clocks can take input for either VCLK or VCLK2, but + * VCLK is the preferred path for HDMI clocking and VCLK2 is the + * preferred path for CVBS VDAC clocking. + * + * VCLK and VCLK2 have fixed divided clocks paths for /1, /2, /4, /6 or /12. + * + * The PLL_DIV can achieve an additional fractional dividing like + * 1.5, 3.5, 3.75... to generate special 2K and 4K 10bit clocks. */

/* HHI Registers */ @@ -50,11 +67,34 @@ #define VCLK2_SOFT_RESET BIT(15) #define VCLK2_DIV1_EN BIT(0) #define HHI_VID_CLK_DIV 0x164 /* 0x59 offset in data sheet */ +#define VCLK_DIV_MASK 0xff +#define VCLK_DIV_EN BIT(16) +#define VCLK_DIV_RESET BIT(17) +#define CTS_ENCP_SEL_MASK (0xf << 24) +#define CTS_ENCP_SEL_SHIFT 24 #define CTS_ENCI_SEL_MASK (0xf << 28) #define CTS_ENCI_SEL_SHIFT 28 +#define HHI_VID_CLK_CNTL 0x17c /* 0x5f offset in data sheet */ +#define VCLK_EN BIT(19) +#define VCLK_SEL_MASK (0x7 << 16) +#define VCLK_SEL_SHIFT 16 +#define VCLK_SOFT_RESET BIT(15) +#define VCLK_DIV1_EN BIT(0) +#define VCLK_DIV2_EN BIT(1) +#define VCLK_DIV4_EN BIT(2) +#define VCLK_DIV6_EN BIT(3) +#define VCLK_DIV12_EN BIT(4) #define HHI_VID_CLK_CNTL2 0x194 /* 0x65 offset in data sheet */ #define CTS_ENCI_EN BIT(0) +#define CTS_ENCP_EN BIT(2) #define CTS_VDAC_EN BIT(4) +#define HDMI_TX_PIXEL_EN BIT(5) +#define HHI_HDMI_CLK_CNTL 0x1cc /* 0x73 offset in data sheet */ +#define HDMI_TX_PIXEL_SEL_MASK (0xf << 16) +#define HDMI_TX_PIXEL_SEL_SHIFT 16 +#define CTS_HDMI_SYS_SEL_MASK (0x7 << 9) +#define CTS_HDMI_SYS_DIV_MASK (0x7f) +#define CTS_HDMI_SYS_EN BIT(8)

#define HHI_VDAC_CNTL0 0x2F4 /* 0xbd offset in data sheet */ #define HHI_VDAC_CNTL1 0x2F8 /* 0xbe offset in data sheet */ @@ -69,6 +109,126 @@ #define HDMI_PLL_RESET BIT(28) #define HDMI_PLL_LOCK BIT(31)

+/* VID PLL Dividers */ +enum { + VID_PLL_DIV_1 = 0, + VID_PLL_DIV_2, + VID_PLL_DIV_2p5, + VID_PLL_DIV_3, + VID_PLL_DIV_3p5, + VID_PLL_DIV_3p75, + VID_PLL_DIV_4, + VID_PLL_DIV_5, + VID_PLL_DIV_6, + VID_PLL_DIV_6p25, + VID_PLL_DIV_7, + VID_PLL_DIV_7p5, + VID_PLL_DIV_12, + VID_PLL_DIV_14, + VID_PLL_DIV_15, +}; + +void meson_vid_pll_set(struct meson_drm *priv, unsigned int div) +{ + unsigned int shift_val = 0; + unsigned int shift_sel = 0; + + /* Disable vid_pll output clock */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, 0); + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0); + + switch (div) { + case VID_PLL_DIV_2: + shift_val = 0x0aaa; + shift_sel = 0; + break; + case VID_PLL_DIV_2p5: + shift_val = 0x5294; + shift_sel = 2; + break; + case VID_PLL_DIV_3: + shift_val = 0x0db6; + shift_sel = 0; + break; + case VID_PLL_DIV_3p5: + shift_val = 0x36cc; + shift_sel = 1; + break; + case VID_PLL_DIV_3p75: + shift_val = 0x6666; + shift_sel = 2; + break; + case VID_PLL_DIV_4: + shift_val = 0x0ccc; + shift_sel = 0; + break; + case VID_PLL_DIV_5: + shift_val = 0x739c; + shift_sel = 2; + break; + case VID_PLL_DIV_6: + shift_val = 0x0e38; + shift_sel = 0; + break; + case VID_PLL_DIV_6p25: + shift_val = 0x0000; + shift_sel = 3; + break; + case VID_PLL_DIV_7: + shift_val = 0x3c78; + shift_sel = 1; + break; + case VID_PLL_DIV_7p5: + shift_val = 0x78f0; + shift_sel = 2; + break; + case VID_PLL_DIV_12: + shift_val = 0x0fc0; + shift_sel = 0; + break; + case VID_PLL_DIV_14: + shift_val = 0x3f80; + shift_sel = 1; + break; + case VID_PLL_DIV_15: + shift_val = 0x7f80; + shift_sel = 2; + break; + } + + if (div == VID_PLL_DIV_1) + /* Enable vid_pll bypass to HDMI pll */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_BYPASS, VID_PLL_BYPASS); + else { + /* Disable Bypass */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_BYPASS, 0); + /* Clear sel */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + 3 << 16, 0); + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_PRESET, 0); + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + 0x7fff, 0); + + /* Setup sel and val */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + 3 << 16, shift_sel << 16); + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_PRESET, VID_PLL_PRESET); + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + 0x7fff, shift_val); + + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_PRESET, 0); + } + + /* Enable the vid_pll output clock */ + regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, + VID_PLL_EN, VID_PLL_EN); +} + /* * Setup VCLK2 for 27MHz, and enable clocks for ENCI and VDAC * @@ -110,15 +270,8 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv) /* Disable VCLK2 */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, 0);

- /* Disable vid_pll output clock */ - regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, 0); - regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0); - /* Enable vid_pll bypass to HDMI pll */ - regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, - VID_PLL_BYPASS, VID_PLL_BYPASS); - /* Enable the vid_pll output clock */ - regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, - VID_PLL_EN, VID_PLL_EN); + /* Setup vid_pll to /1 */ + meson_vid_pll_set(priv, VID_PLL_DIV_1);

/* Setup the VCLK2 divider value to achieve 27MHz */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, @@ -159,9 +312,454 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv) CTS_VDAC_EN, CTS_VDAC_EN); }

+ +/* PLL O1 O2 O3 VP DV EN TX */ +/* 4320 /4 /4 /1 /5 /1 => /2 /2 */ +#define MESON_VCLK_HDMI_ENCI_54000 1 +/* 4320 /4 /4 /1 /5 /1 => /1 /2 */ +#define MESON_VCLK_HDMI_DDR_54000 2 +/* 2970 /4 /1 /1 /5 /1 => /1 /2 */ +#define MESON_VCLK_HDMI_DDR_148500 3 +/* 2970 /2 /2 /2 /5 /1 => /1 /1 */ +#define MESON_VCLK_HDMI_74250 4 +/* 2970 /1 /2 /2 /5 /1 => /1 /1 */ +#define MESON_VCLK_HDMI_148500 5 +/* 2970 /1 /1 /1 /5 /2 => /1 /1 */ +#define MESON_VCLK_HDMI_297000 6 +/* 5940 /1 /1 /2 /5 /1 => /1 /1 */ +#define MESON_VCLK_HDMI_594000 7 + +struct meson_vclk_params { + unsigned int pll_base_freq; + unsigned int pll_od1; + unsigned int pll_od2; + unsigned int pll_od3; + unsigned int vid_pll_div; + unsigned int vclk_div; +} params[] = { + [MESON_VCLK_HDMI_ENCI_54000] = { + .pll_base_freq = 4320000, + .pll_od1 = 4, + .pll_od2 = 4, + .pll_od3 = 1, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, + [MESON_VCLK_HDMI_DDR_54000] = { + .pll_base_freq = 4320000, + .pll_od1 = 4, + .pll_od2 = 4, + .pll_od3 = 1, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, + [MESON_VCLK_HDMI_DDR_148500] = { + .pll_base_freq = 2970000, + .pll_od1 = 4, + .pll_od2 = 1, + .pll_od3 = 1, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, + [MESON_VCLK_HDMI_74250] = { + .pll_base_freq = 2970000, + .pll_od1 = 2, + .pll_od2 = 2, + .pll_od3 = 2, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, + [MESON_VCLK_HDMI_148500] = { + .pll_base_freq = 2970000, + .pll_od1 = 1, + .pll_od2 = 2, + .pll_od3 = 2, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, + [MESON_VCLK_HDMI_297000] = { + .pll_base_freq = 2970000, + .pll_od1 = 1, + .pll_od2 = 1, + .pll_od3 = 1, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 2, + }, + [MESON_VCLK_HDMI_594000] = { + .pll_base_freq = 5940000, + .pll_od1 = 1, + .pll_od2 = 1, + .pll_od3 = 2, + .vid_pll_div = VID_PLL_DIV_5, + .vclk_div = 1, + }, +}; + +static inline unsigned int pll_od_to_reg(unsigned int od) +{ + switch (od) { + case 1: + return 0; + case 2: + return 1; + case 4: + return 2; + case 8: + return 3; + } + + /* Invalid */ + return 0; +} + +void meson_hdmi_pll_set(struct meson_drm *priv, + unsigned int base, + unsigned int od1, + unsigned int od2, + unsigned int od3) +{ + unsigned int val; + + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { + switch (base) { + case 2970000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00000000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55); + + /* Enable and unreset */ + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, + 0x7 << 28, 0x4 << 28); + + /* Poll for lock bit */ + regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, + val, (val & HDMI_PLL_LOCK), 10, 0); + + /* div_frac */ + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, + 0xFFFF, 0x4e00); + break; + + case 4320000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800025a); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00000000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55); + + /* unreset */ + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, + BIT(28), 0); + + /* Poll for lock bit */ + regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, + val, (val & HDMI_PLL_LOCK), 10, 0); + break; + + case 5940000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800027b); + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, + 0xFFFF, 0x4c00); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x135c5091); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55); + + /* unreset */ + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, + BIT(28), 0); + + /* Poll for lock bit */ + regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, + val, (val & HDMI_PLL_LOCK), 10, 0); + break; + }; + } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || + meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) { + switch (base) { + case 2970000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500); + break; + + case 4320000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x400002b4); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500); + break; + + case 5940000: + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x400002f7); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb200); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729); + regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500); + break; + + }; + + /* Reset PLL */ + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, + HDMI_PLL_RESET, HDMI_PLL_RESET); + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, + HDMI_PLL_RESET, 0); + + /* Poll for lock bit */ + regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val, + (val & HDMI_PLL_LOCK), 10, 0); + }; + + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, + 3 << 16, pll_od_to_reg(od1) << 16); + else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || + meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, + 3 << 21, pll_od_to_reg(od1) << 21); + + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, + 3 << 22, pll_od_to_reg(od2) << 22); + else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || + meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, + 3 << 23, pll_od_to_reg(od2) << 23); + + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, + 3 << 18, pll_od_to_reg(od3) << 18); + else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || + meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) + regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, + 3 << 19, pll_od_to_reg(od3) << 19); +} + void meson_vclk_setup(struct meson_drm *priv, unsigned int target, - unsigned int freq) + unsigned int vclk_freq, unsigned int venc_freq, + unsigned int dac_freq, bool hdmi_use_enci) { - if (target == MESON_VCLK_TARGET_CVBS && freq == MESON_VCLK_CVBS) + unsigned int freq; + unsigned int hdmi_tx_div; + unsigned int venc_div; + + if (target == MESON_VCLK_TARGET_CVBS) { meson_venci_cvbs_clock_config(priv); + return; + } + + hdmi_tx_div = vclk_freq / dac_freq; + + if (hdmi_tx_div == 0) { + pr_err("Fatal Error, invalid HDMI-TX freq %d\n", + dac_freq); + return; + } + + venc_div = vclk_freq / venc_freq; + + if (venc_div == 0) { + pr_err("Fatal Error, invalid HDMI venc freq %d\n", + venc_freq); + return; + } + + switch (vclk_freq) { + case 54000: + if (hdmi_use_enci) + freq = MESON_VCLK_HDMI_ENCI_54000; + else + freq = MESON_VCLK_HDMI_DDR_54000; + break; + case 74250: + freq = MESON_VCLK_HDMI_74250; + break; + case 148500: + if (dac_freq != 148500) + freq = MESON_VCLK_HDMI_DDR_148500; + else + freq = MESON_VCLK_HDMI_148500; + break; + case 297000: + freq = MESON_VCLK_HDMI_297000; + break; + case 594000: + freq = MESON_VCLK_HDMI_594000; + break; + default: + pr_err("Fatal Error, invalid HDMI vclk freq %d\n", + vclk_freq); + return; + } + + /* Set HDMI-TX sys clock */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + CTS_HDMI_SYS_SEL_MASK, 0); + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + CTS_HDMI_SYS_DIV_MASK, 0); + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + CTS_HDMI_SYS_EN, CTS_HDMI_SYS_EN); + + /* Set HDMI PLL rate */ + meson_hdmi_pll_set(priv, params[freq].pll_base_freq, + params[freq].pll_od1, + params[freq].pll_od2, + params[freq].pll_od3); + + /* Setup vid_pll divider */ + meson_vid_pll_set(priv, params[freq].vid_pll_div); + + /* Set VCLK div */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_SEL_MASK, 0); + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + VCLK_DIV_MASK, params[freq].vclk_div - 1); + + /* Set HDMI-TX source */ + switch (hdmi_tx_div) { + case 1: + /* enable vclk_div1 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV1_EN, VCLK_DIV1_EN); + + /* select vclk_div1 for HDMI-TX */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + HDMI_TX_PIXEL_SEL_MASK, 0); + break; + case 2: + /* enable vclk_div2 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV2_EN, VCLK_DIV2_EN); + + /* select vclk_div2 for HDMI-TX */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + HDMI_TX_PIXEL_SEL_MASK, 1 << HDMI_TX_PIXEL_SEL_SHIFT); + break; + case 4: + /* enable vclk_div4 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV4_EN, VCLK_DIV4_EN); + + /* select vclk_div4 for HDMI-TX */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + HDMI_TX_PIXEL_SEL_MASK, 2 << HDMI_TX_PIXEL_SEL_SHIFT); + break; + case 6: + /* enable vclk_div6 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV6_EN, VCLK_DIV6_EN); + + /* select vclk_div6 for HDMI-TX */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + HDMI_TX_PIXEL_SEL_MASK, 3 << HDMI_TX_PIXEL_SEL_SHIFT); + break; + case 12: + /* enable vclk_div12 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV12_EN, VCLK_DIV12_EN); + + /* select vclk_div12 for HDMI-TX */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, + HDMI_TX_PIXEL_SEL_MASK, 4 << HDMI_TX_PIXEL_SEL_SHIFT); + break; + } + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, + HDMI_TX_PIXEL_EN, HDMI_TX_PIXEL_EN); + + /* Set ENCI/ENCP Source */ + switch (venc_div) { + case 1: + /* enable vclk_div1 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV1_EN, VCLK_DIV1_EN); + + if (hdmi_use_enci) + /* select vclk_div1 for enci */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCI_SEL_MASK, 0); + else + /* select vclk_div1 for encp */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCP_SEL_MASK, 0); + break; + case 2: + /* enable vclk_div2 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV2_EN, VCLK_DIV2_EN); + + if (hdmi_use_enci) + /* select vclk_div2 for enci */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCI_SEL_MASK, 1 << CTS_ENCI_SEL_SHIFT); + else + /* select vclk_div2 for encp */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCP_SEL_MASK, 1 << CTS_ENCP_SEL_SHIFT); + break; + case 4: + /* enable vclk_div4 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV4_EN, VCLK_DIV4_EN); + + if (hdmi_use_enci) + /* select vclk_div4 for enci */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCI_SEL_MASK, 2 << CTS_ENCI_SEL_SHIFT); + else + /* select vclk_div4 for encp */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCP_SEL_MASK, 2 << CTS_ENCP_SEL_SHIFT); + break; + case 6: + /* enable vclk_div6 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV6_EN, VCLK_DIV6_EN); + + if (hdmi_use_enci) + /* select vclk_div6 for enci */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCI_SEL_MASK, 3 << CTS_ENCI_SEL_SHIFT); + else + /* select vclk_div6 for encp */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCP_SEL_MASK, 3 << CTS_ENCP_SEL_SHIFT); + break; + case 12: + /* enable vclk_div12 gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, + VCLK_DIV12_EN, VCLK_DIV12_EN); + + if (hdmi_use_enci) + /* select vclk_div12 for enci */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCI_SEL_MASK, 4 << CTS_ENCI_SEL_SHIFT); + else + /* select vclk_div12 for encp */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, + CTS_ENCP_SEL_MASK, 4 << CTS_ENCP_SEL_SHIFT); + break; + } + + if (hdmi_use_enci) + /* Enable ENCI clock gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, + CTS_ENCI_EN, CTS_ENCI_EN); + else + /* Enable ENCP clock gate */ + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, + CTS_ENCP_EN, CTS_ENCP_EN); + + regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_EN, VCLK_EN); } +EXPORT_SYMBOL_GPL(meson_vclk_setup); diff --git a/drivers/gpu/drm/meson/meson_vclk.h b/drivers/gpu/drm/meson/meson_vclk.h index ec62735..0401b52 100644 --- a/drivers/gpu/drm/meson/meson_vclk.h +++ b/drivers/gpu/drm/meson/meson_vclk.h @@ -23,12 +23,14 @@

enum { MESON_VCLK_TARGET_CVBS = 0, + MESON_VCLK_TARGET_HDMI = 1, };

/* 27MHz is the CVBS Pixel Clock */ -#define MESON_VCLK_CVBS 27000 +#define MESON_VCLK_CVBS 27000

void meson_vclk_setup(struct meson_drm *priv, unsigned int target, - unsigned int freq); + unsigned int vclk_freq, unsigned int venc_freq, + unsigned int dac_freq, bool hdmi_use_enci);

#endif /* __MESON_VCLK_H */ diff --git a/drivers/gpu/drm/meson/meson_venc_cvbs.c b/drivers/gpu/drm/meson/meson_venc_cvbs.c index a96fcb4..5d4f19a 100644 --- a/drivers/gpu/drm/meson/meson_venc_cvbs.c +++ b/drivers/gpu/drm/meson/meson_venc_cvbs.c @@ -32,6 +32,7 @@

#include "meson_venc_cvbs.h" #include "meson_venc.h" +#include "meson_vclk.h" #include "meson_registers.h"

/* HHI VDAC Registers */ @@ -194,14 +195,20 @@ static void meson_venc_cvbs_encoder_mode_set(struct drm_encoder *encoder, { struct meson_venc_cvbs *meson_venc_cvbs = encoder_to_meson_venc_cvbs(encoder); + struct meson_drm *priv = meson_venc_cvbs->priv; int i;

for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) { struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];

if (drm_mode_equal(mode, &meson_mode->mode)) { - meson_venci_cvbs_mode_set(meson_venc_cvbs->priv, + meson_venci_cvbs_mode_set(priv, meson_mode->enci); + + /* Setup 27MHz vclk2 for ENCI and VDAC */ + meson_vclk_setup(priv, MESON_VCLK_TARGET_CVBS, + MESON_VCLK_CVBS, MESON_VCLK_CVBS, + MESON_VCLK_CVBS, true); break; } }

The Amlogic Meson GXBB/GXL/GXM SoCs embeds a Synopsys DesignWare HDMI TX Controller with a custom Bridge + PHY around the Controller.

This driver makes uses of all the custom PHY plat data callbacks and enables the compatible HDMI modes to be configured as a drm_encoder instance.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/gpu/drm/meson/Kconfig | 6 + drivers/gpu/drm/meson/Makefile | 1 + drivers/gpu/drm/meson/meson_drv.h | 3 + drivers/gpu/drm/meson/meson_dw_hdmi.c | 910 ++++++++++++++++++++++++++++++++++ drivers/gpu/drm/meson/meson_dw_hdmi.h | 146 ++++++ 5 files changed, 1066 insertions(+) create mode 100644 drivers/gpu/drm/meson/meson_dw_hdmi.c create mode 100644 drivers/gpu/drm/meson/meson_dw_hdmi.h

diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig index 99719af..3ce51d8 100644 --- a/drivers/gpu/drm/meson/Kconfig +++ b/drivers/gpu/drm/meson/Kconfig @@ -7,3 +7,9 @@ config DRM_MESON select DRM_GEM_CMA_HELPER select VIDEOMODE_HELPERS select REGMAP_MMIO + +config DRM_MESON_DW_HDMI + tristate "HDMI Synopsys Controller support for Amlogic Meson Display" + depends on DRM_MESON + default y if DRM_MESON + select DRM_DW_HDMI diff --git a/drivers/gpu/drm/meson/Makefile b/drivers/gpu/drm/meson/Makefile index 92cf845..c5c4cc3 100644 --- a/drivers/gpu/drm/meson/Makefile +++ b/drivers/gpu/drm/meson/Makefile @@ -2,3 +2,4 @@ meson-drm-y := meson_drv.o meson_plane.o meson_crtc.o meson_venc_cvbs.o meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_canvas.o

obj-$(CONFIG_DRM_MESON) += meson-drm.o +obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o diff --git a/drivers/gpu/drm/meson/meson_drv.h b/drivers/gpu/drm/meson/meson_drv.h index 6195327..5e8b392 100644 --- a/drivers/gpu/drm/meson/meson_drv.h +++ b/drivers/gpu/drm/meson/meson_drv.h @@ -47,6 +47,9 @@ struct meson_drm {

struct { unsigned int current_mode; + bool hdmi_repeat; + bool venc_repeat; + bool hdmi_use_enci; } venc; };

diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c new file mode 100644 index 0000000..8851dcb --- /dev/null +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c @@ -0,0 +1,910 @@ +/* + * Copyright (C) 2016 BayLibre, SAS + * Author: Neil Armstrong narmstrong@baylibre.com + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see http://www.gnu.org/licenses/. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/component.h> +#include <linux/of_graph.h> +#include <linux/reset.h> +#include <linux/clk.h> + +#include <drm/drmP.h> +#include <drm/drm_edid.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_atomic_helper.h> +#include <drm/bridge/dw_hdmi.h> + +#include <uapi/linux/media-bus-format.h> +#include <uapi/linux/videodev2.h> + +#include "meson_drv.h" +#include "meson_venc.h" +#include "meson_vclk.h" +#include "meson_dw_hdmi.h" +#include "meson_registers.h" + +#define DRIVER_NAME "meson-dw-hdmi" +#define DRIVER_DESC "Amlogic Meson HDMI-TX DRM driver" + +/* + * HDMI Output is composed of : + * - A Synopsys DesignWare HDMI Controller IP + * - A TOP control block controlling the Clocks and PHY + * - A custom HDMI PHY in order convert video to TMDS signal + * ___________________________________ + * | HDMI TOP |<= HPD + * |___________________________________| + * | | | + * | Synopsys HDMI | HDMI PHY |=> TMDS + * | Controller |________________| + * |___________________________________|<=> DDC + * + * The HDMI TOP block only supports HPD sensing. + * The Synopsys HDMI Controller interrupt is routed + * through the TOP Block interrupt. + * Communication to the TOP Block and the Synopsys + * HDMI Controller is done a pair of addr+read/write + * registers. + * The HDMI PHY is configured by registers in the + * HHI register block. + * + * Pixel data arrives in 4:4:4 format from the VENC + * block and the VPU HDMI mux selects either the ENCI + * encoder for the 576i or 480i formats or the ENCP + * encoder for all the other formats including + * interlaced HD formats. + * The VENC uses a DVI encoder on top of the ENCI + * or ENCP encoders to generate DVI timings for the + * HDMI controller. + * + * GXBB, GXL and GXM embeds the Synopsys DesignWare + * HDMI TX IP version 2.01a with HDCP and I2C & S/PDIF + * audio source interfaces. + * + * We handle the following features : + * - HPD Rise & Fall interrupt + * - HDMI Controller Interrupt + * - HDMI PHY Init for 480i to 1080p60 + * - VENC & HDMI Clock setup for 480i to 1080p60 + * - VENC Mode setup for 480i to 1080p60 + * + * What is missing : + * - PHY, Clock and Mode setup for 2k && 4k modes + * - SDDC Scrambling mode for HDMI 2.0a + * - HDCP Setup + * - CEC Management + */ + +/* TOP Block Communication Channel */ +#define HDMITX_TOP_ADDR_REG 0x0 +#define HDMITX_TOP_DATA_REG 0x4 +#define HDMITX_TOP_CTRL_REG 0x8 + +/* Controller Communication Channel */ +#define HDMITX_DWC_ADDR_REG 0x10 +#define HDMITX_DWC_DATA_REG 0x14 +#define HDMITX_DWC_CTRL_REG 0x18 + +/* HHI Registers */ +#define HHI_MEM_PD_REG0 0x100 /* 0x40 */ +#define HHI_HDMI_CLK_CNTL 0x1cc /* 0x73 */ +#define HHI_HDMI_PHY_CNTL0 0x3a0 /* 0xe8 */ +#define HHI_HDMI_PHY_CNTL1 0x3a4 /* 0xe9 */ +#define HHI_HDMI_PHY_CNTL2 0x3a8 /* 0xea */ +#define HHI_HDMI_PHY_CNTL3 0x3ac /* 0xeb */ + +static DEFINE_SPINLOCK(reg_lock); + +enum meson_venc_source { + MESON_VENC_SOURCE_NONE = 0, + MESON_VENC_SOURCE_ENCI = 1, + MESON_VENC_SOURCE_ENCP = 2, +}; + +struct meson_dw_hdmi { + struct drm_encoder encoder; + struct dw_hdmi_plat_data dw_plat_data; + struct meson_drm *priv; + struct device *dev; + void __iomem *hdmitx; + struct reset_control *hdmitx_apb; + struct reset_control *hdmitx_ctrl; + struct reset_control *hdmitx_phy; + struct clk *hdmi_pclk; + struct clk *venci_clk; + u32 irq_stat; +}; +#define encoder_to_meson_dw_hdmi(x) \ + container_of(x, struct meson_dw_hdmi, encoder) + +static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi, + const char *compat) +{ + return of_device_is_compatible(dw_hdmi->dev->of_node, compat); +} + +/* PHY (via TOP bridge) and Controller dedicated register interface */ + +static unsigned int dw_hdmi_top_read(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr) +{ + unsigned long flags; + unsigned int data; + + spin_lock_irqsave(&reg_lock, flags); + + /* ADDR must be written twice */ + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG); + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG); + + /* Read needs a second DATA read */ + data = readl(dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG); + data = readl(dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG); + + spin_unlock_irqrestore(&reg_lock, flags); + + return data; +} + +static inline void dw_hdmi_top_write(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr, unsigned int data) +{ + unsigned long flags; + + spin_lock_irqsave(&reg_lock, flags); + + /* ADDR must be written twice */ + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG); + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_TOP_ADDR_REG); + + /* Write needs single DATA write */ + writel(data, dw_hdmi->hdmitx + HDMITX_TOP_DATA_REG); + + spin_unlock_irqrestore(&reg_lock, flags); +} + +/* Helper to change specific bits in PHY registers */ +static inline void dw_hdmi_top_write_bits(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr, + unsigned int mask, + unsigned int val) +{ + unsigned int data = dw_hdmi_top_read(dw_hdmi, addr); + + data &= ~mask; + data |= val; + + dw_hdmi_top_write(dw_hdmi, addr, data); +} + +static unsigned int dw_hdmi_dwc_read(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr) +{ + unsigned long flags; + unsigned int data; + + spin_lock_irqsave(&reg_lock, flags); + + /* ADDR must be written twice */ + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG); + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG); + + /* Read needs a second DATA read */ + data = readl(dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG); + data = readl(dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG); + + spin_unlock_irqrestore(&reg_lock, flags); + + return data; +} + +static inline void dw_hdmi_dwc_write(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr, unsigned int data) +{ + unsigned long flags; + + spin_lock_irqsave(&reg_lock, flags); + + /* ADDR must be written twice */ + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG); + writel(addr & 0xffff, dw_hdmi->hdmitx + HDMITX_DWC_ADDR_REG); + + /* Write needs single DATA write */ + writel(data, dw_hdmi->hdmitx + HDMITX_DWC_DATA_REG); + + spin_unlock_irqrestore(&reg_lock, flags); +} + +/* Helper to change specific bits in controller registers */ +static inline void dw_hdmi_dwc_write_bits(struct meson_dw_hdmi *dw_hdmi, + unsigned int addr, + unsigned int mask, + unsigned int val) +{ + unsigned int data = dw_hdmi_dwc_read(dw_hdmi, addr); + + data &= ~mask; + data |= val; + + dw_hdmi_dwc_write(dw_hdmi, addr, data); +} + +/* Bridge */ + +/* Setup PHY bandwidth modes */ +static void meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi, + struct drm_display_mode *mode) +{ + struct meson_drm *priv = dw_hdmi->priv; + unsigned int pixel_clock = mode->clock; + + if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") || + dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi")) { + if (pixel_clock >= 371250) { + /* 5.94Gbps, 3.7125Gbps */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x333d3282); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2136315b); + } else if (pixel_clock >= 297000) { + /* 2.97Gbps */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303382); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2036315b); + } else if (pixel_clock >= 148500) { + /* 1.485Gbps */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303362); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2016315b); + } else { + /* 742.5Mbps, and below */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33604142); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x0016315b); + } + } else if (dw_hdmi_is_compatible(dw_hdmi, + "amlogic,meson-gxbb-dw-hdmi")) { + if (pixel_clock >= 371250) { + /* 5.94Gbps, 3.7125Gbps */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33353245); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2100115b); + } else if (pixel_clock >= 297000) { + /* 2.97Gbps */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33634283); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0xb000115b); + } else { + /* 1.485Gbps, and below */ + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33632122); + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2000115b); + } + } +} + +static inline void dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi) +{ + struct meson_drm *priv = dw_hdmi->priv; + + /* Enable and software reset */ + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0xf); + + mdelay(2); + + /* Enable and unreset */ + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0xe); + + mdelay(2); +} + +static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi, + struct drm_display_mode *mode) +{ + struct meson_drm *priv = dw_hdmi->priv; + int vic = drm_match_cea_mode(mode); + unsigned int vclk_freq; + unsigned int venc_freq; + unsigned int hdmi_freq; + + vclk_freq = mode->clock; + + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + vclk_freq *= 2; + + venc_freq = vclk_freq; + hdmi_freq = vclk_freq; + + if (meson_venc_hdmi_venc_repeat(vic)) + venc_freq *= 2; + + vclk_freq = max(venc_freq, hdmi_freq); + + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + venc_freq /= 2; + + DRM_DEBUG_DRIVER("vclk:%d venc=%d hdmi=%d enci=%d\n", + vclk_freq, venc_freq, hdmi_freq, + priv->venc.hdmi_use_enci); + + meson_vclk_setup(priv, MESON_VCLK_TARGET_HDMI, vclk_freq, + venc_freq, hdmi_freq, priv->venc.hdmi_use_enci); +} + +static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data, + struct drm_display_mode *mode) +{ + struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data; + struct meson_drm *priv = dw_hdmi->priv; + unsigned int wr_clk = + readl_relaxed(priv->io_base + _REG(VPU_HDMI_SETTING)); + + DRM_DEBUG_DRIVER("%d:"%s"\n", mode->base.id, mode->name); + + /* Enable clocks */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, 0xffff, 0x100); + + /* Bring HDMITX MEM output of power down */ + regmap_update_bits(priv->hhi, HHI_MEM_PD_REG0, 0xff << 8, 0); + + /* Bring out of reset */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_SW_RESET, 0); + + /* Enable internal pixclk, tmds_clk, spdif_clk, i2s_clk, cecclk */ + dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_CLK_CNTL, + 0x3, 0x3); + dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_CLK_CNTL, + 0x3 << 4, 0x3 << 4); + + /* Enable normal output to PHY */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_BIST_CNTL, BIT(12)); + + /* TMDS pattern setup (TOFIX pattern for 4k2k scrambling) */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_01, 0x001f001f); + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_23, 0x001f001f); + + /* Load TMDS pattern */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_CNTL, 0x1); + msleep(20); + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_TMDS_CLK_PTTN_CNTL, 0x2); + + /* Setup PHY parameters */ + meson_hdmi_phy_setup_mode(dw_hdmi, mode); + + /* Setup PHY */ + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, + 0xffff << 16, 0x0390 << 16); + + /* BIT_INVERT */ + if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") || + dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi")) + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, + BIT(17), 0); + else + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, + BIT(17), BIT(17)); + + /* Disable clock, fifo, fifo_wr */ + regmap_update_bits(priv->hhi, HHI_HDMI_PHY_CNTL1, 0xf, 0); + + msleep(100); + + /* Reset PHY 3 times in a row */ + dw_hdmi_phy_reset(dw_hdmi); + dw_hdmi_phy_reset(dw_hdmi); + dw_hdmi_phy_reset(dw_hdmi); + + /* Temporary Disable VENC video stream */ + if (priv->venc.hdmi_use_enci) + writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN)); + else + writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN)); + + /* Temporary Disable HDMI video stream to HDMI-TX */ + writel_bits_relaxed(0x3, 0, + priv->io_base + _REG(VPU_HDMI_SETTING)); + writel_bits_relaxed(0xf << 8, 0, + priv->io_base + _REG(VPU_HDMI_SETTING)); + + /* Re-Enable VENC video stream */ + if (priv->venc.hdmi_use_enci) + writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN)); + else + writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN)); + + /* Push back HDMI clock settings */ + writel_bits_relaxed(0xf << 8, wr_clk & (0xf << 8), + priv->io_base + _REG(VPU_HDMI_SETTING)); + + /* Enable and Select HDMI video source for HDMI-TX */ + if (priv->venc.hdmi_use_enci) + writel_bits_relaxed(0x3, MESON_VENC_SOURCE_ENCI, + priv->io_base + _REG(VPU_HDMI_SETTING)); + else + writel_bits_relaxed(0x3, MESON_VENC_SOURCE_ENCP, + priv->io_base + _REG(VPU_HDMI_SETTING)); + + return 0; +} + +static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, + void *data) +{ + struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data; + struct meson_drm *priv = dw_hdmi->priv; + + DRM_DEBUG_DRIVER("\n"); + + regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0); +} + +static enum drm_connector_status dw_hdmi_read_hpd(struct dw_hdmi *hdmi, + void *data) +{ + struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data; + + return !!dw_hdmi_top_read(dw_hdmi, HDMITX_TOP_STAT0) ? + connector_status_connected : connector_status_disconnected; +} + +static void dw_hdmi_setup_hpd(struct dw_hdmi *hdmi, + void *data) +{ + struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data; + + /* Setup HPD Filter */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_HPD_FILTER, + (0xa << 12) | 0xa0); + + /* Clear interrupts */ + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_INTR_STAT_CLR, + HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL); + + /* Unmask interrupts */ + dw_hdmi_top_write_bits(dw_hdmi, HDMITX_TOP_INTR_MASKN, + HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL, + HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL); +} + +static const struct dw_hdmi_phy_ops meson_dw_hdmi_phy_ops = { + .init = dw_hdmi_phy_init, + .disable = dw_hdmi_phy_disable, + .read_hpd = dw_hdmi_read_hpd, + .setup_hpd = dw_hdmi_setup_hpd, +}; + +static irqreturn_t dw_hdmi_top_irq(int irq, void *dev_id) +{ + struct meson_dw_hdmi *dw_hdmi = dev_id; + u32 stat; + + stat = dw_hdmi_top_read(dw_hdmi, HDMITX_TOP_INTR_STAT); + dw_hdmi_top_write(dw_hdmi, HDMITX_TOP_INTR_STAT_CLR, stat); + + /* HPD Events, handle in the threaded interrupt handler */ + if (stat & (HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL)) { + dw_hdmi->irq_stat = stat; + return IRQ_WAKE_THREAD; + } + + /* HDMI Controller Interrupt */ + if (stat & 1) + return IRQ_NONE; + + /* TOFIX Handle HDCP Interrupts */ + + return IRQ_HANDLED; +} + +/* Threaded interrupt handler to manage HPD events */ +static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id) +{ + struct meson_dw_hdmi *dw_hdmi = dev_id; + u32 stat = dw_hdmi->irq_stat; + + /* HPD Events */ + if (stat & (HDMITX_TOP_INTR_HPD_RISE | HDMITX_TOP_INTR_HPD_FALL)) { + bool hpd_connected = false; + + if (stat & HDMITX_TOP_INTR_HPD_RISE) + hpd_connected = true; + + dw_hdmi_setup_rx_sense(dw_hdmi->dev, hpd_connected, + hpd_connected); + + drm_helper_hpd_irq_event(dw_hdmi->encoder.dev); + } + + return IRQ_HANDLED; +} + +/* TOFIX Enable support for non-vic modes */ +static enum drm_mode_status dw_hdmi_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + unsigned int vclk_freq; + unsigned int venc_freq; + unsigned int hdmi_freq; + int vic = drm_match_cea_mode(mode); + + DRM_DEBUG_DRIVER("Modeline %d:"%s" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n", + mode->base.id, mode->name, mode->vrefresh, mode->clock, + mode->hdisplay, mode->hsync_start, + mode->hsync_end, mode->htotal, + mode->vdisplay, mode->vsync_start, + mode->vsync_end, mode->vtotal, mode->type, mode->flags); + + /* For now, only accept VIC modes */ + if (!vic) + return MODE_BAD; + + /* For now, filter by supported VIC modes */ + if (!meson_venc_hdmi_supported_vic(vic)) + return MODE_BAD; + + vclk_freq = mode->clock; + + /* 480i/576i needs global pixel doubling */ + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + vclk_freq *= 2; + + venc_freq = vclk_freq; + hdmi_freq = vclk_freq; + + /* VENC double pixels for 1080i and 720p modes */ + if (meson_venc_hdmi_venc_repeat(vic)) + venc_freq *= 2; + + vclk_freq = max(venc_freq, hdmi_freq); + + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + venc_freq /= 2; + + dev_dbg(connector->dev->dev, "%s: vclk:%d venc=%d hdmi=%d\n", __func__, + vclk_freq, venc_freq, hdmi_freq); + + /* Finally filter by configurable vclk frequencies */ + switch (vclk_freq) { + case 54000: + case 74250: + case 148500: + case 297000: + case 594000: + return MODE_OK; + } + + return MODE_CLOCK_RANGE; +} + +/* Encoder */ + +static void meson_venc_hdmi_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +static const struct drm_encoder_funcs meson_venc_hdmi_encoder_funcs = { + .destroy = meson_venc_hdmi_encoder_destroy, +}; + +static int meson_venc_hdmi_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + return 0; +} + +static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder) +{ + struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder); + struct meson_drm *priv = dw_hdmi->priv; + + DRM_DEBUG_DRIVER("\n"); + + writel_bits_relaxed(0x3, 0, + priv->io_base + _REG(VPU_HDMI_SETTING)); + + writel_relaxed(0, priv->io_base + _REG(ENCI_VIDEO_EN)); + writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN)); +} + +static void meson_venc_hdmi_encoder_enable(struct drm_encoder *encoder) +{ + struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder); + struct meson_drm *priv = dw_hdmi->priv; + + DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP"); + + if (priv->venc.hdmi_use_enci) + writel_relaxed(1, priv->io_base + _REG(ENCI_VIDEO_EN)); + else + writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN)); +} + +static void meson_venc_hdmi_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder); + struct meson_drm *priv = dw_hdmi->priv; + int vic = drm_match_cea_mode(mode); + + DRM_DEBUG_DRIVER("%d:"%s" vic %d\n", + mode->base.id, mode->name, vic); + + /* Should have been filtered */ + if (!vic) + return; + + /* VENC + VENC-DVI Mode setup */ + meson_venc_hdmi_mode_set(priv, vic, mode); + + /* VCLK Set clock */ + dw_hdmi_set_vclk(dw_hdmi, mode); + + /* Setup YUV444 to HDMI-TX, no 10bit diphering */ + writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL)); +} + +static const struct drm_encoder_helper_funcs + meson_venc_hdmi_encoder_helper_funcs = { + .atomic_check = meson_venc_hdmi_encoder_atomic_check, + .disable = meson_venc_hdmi_encoder_disable, + .enable = meson_venc_hdmi_encoder_enable, + .mode_set = meson_venc_hdmi_encoder_mode_set, +}; + +/* DW HDMI Regmap */ + +static int meson_dw_hdmi_reg_read(void *context, unsigned int reg, + unsigned int *result) +{ + *result = dw_hdmi_dwc_read(context, reg); + + return 0; + +} + +static int meson_dw_hdmi_reg_write(void *context, unsigned int reg, + unsigned int val) +{ + dw_hdmi_dwc_write(context, reg, val); + + return 0; +} + +static const struct regmap_config meson_dw_hdmi_regmap_config = { + .reg_bits = 32, + .val_bits = 8, + .reg_read = meson_dw_hdmi_reg_read, + .reg_write = meson_dw_hdmi_reg_write, + .max_register = 0x10000, +}; + +static bool meson_hdmi_connector_is_available(struct device *dev) +{ + struct device_node *ep, *remote; + + /* HDMI Connector is on the second port, first endpoint */ + ep = of_graph_get_endpoint_by_regs(dev->of_node, 1, 0); + if (!ep) + return false; + + /* If the endpoint node exists, consider it enabled */ + remote = of_graph_get_remote_port(ep); + if (remote) { + of_node_put(ep); + return true; + } + + of_node_put(ep); + of_node_put(remote); + + return false; +} + +static int meson_dw_hdmi_bind(struct device *dev, struct device *master, + void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + struct meson_dw_hdmi *meson_dw_hdmi; + struct drm_device *drm = data; + struct meson_drm *priv = drm->dev_private; + struct dw_hdmi_plat_data *dw_plat_data; + struct drm_encoder *encoder; + struct resource *res; + int irq; + int ret; + + DRM_DEBUG_DRIVER("\n"); + + if (!meson_hdmi_connector_is_available(dev)) { + dev_info(drm->dev, "HDMI Output connector not available\n"); + return -ENODEV; + } + + meson_dw_hdmi = devm_kzalloc(dev, sizeof(*meson_dw_hdmi), + GFP_KERNEL); + if (!meson_dw_hdmi) + return -ENOMEM; + + meson_dw_hdmi->priv = priv; + meson_dw_hdmi->dev = dev; + dw_plat_data = &meson_dw_hdmi->dw_plat_data; + encoder = &meson_dw_hdmi->encoder; + + meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev, + "hdmitx_apb"); + if (IS_ERR(meson_dw_hdmi->hdmitx_apb)) { + dev_err(dev, "Failed to get hdmitx_apb reset\n"); + return PTR_ERR(meson_dw_hdmi->hdmitx_apb); + } + + meson_dw_hdmi->hdmitx_ctrl = devm_reset_control_get_exclusive(dev, + "hdmitx"); + if (IS_ERR(meson_dw_hdmi->hdmitx_ctrl)) { + dev_err(dev, "Failed to get hdmitx reset\n"); + return PTR_ERR(meson_dw_hdmi->hdmitx_ctrl); + } + + meson_dw_hdmi->hdmitx_phy = devm_reset_control_get_exclusive(dev, + "hdmitx_phy"); + if (IS_ERR(meson_dw_hdmi->hdmitx_phy)) { + dev_err(dev, "Failed to get hdmitx_phy reset\n"); + return PTR_ERR(meson_dw_hdmi->hdmitx_phy); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + meson_dw_hdmi->hdmitx = devm_ioremap_resource(dev, res); + if (IS_ERR(meson_dw_hdmi->hdmitx)) + return PTR_ERR(meson_dw_hdmi->hdmitx); + + meson_dw_hdmi->hdmi_pclk = devm_clk_get(dev, "isfr"); + if (IS_ERR(meson_dw_hdmi->hdmi_pclk)) { + dev_err(dev, "Unable to get HDMI pclk\n"); + return PTR_ERR(meson_dw_hdmi->hdmi_pclk); + } + clk_prepare_enable(meson_dw_hdmi->hdmi_pclk); + + meson_dw_hdmi->venci_clk = devm_clk_get(dev, "venci"); + if (IS_ERR(meson_dw_hdmi->venci_clk)) { + dev_err(dev, "Unable to get venci clk\n"); + return PTR_ERR(meson_dw_hdmi->venci_clk); + } + clk_prepare_enable(meson_dw_hdmi->venci_clk); + + dw_plat_data->regm = devm_regmap_init(dev, NULL, meson_dw_hdmi, + &meson_dw_hdmi_regmap_config); + if (IS_ERR(dw_plat_data->regm)) + return PTR_ERR(dw_plat_data->regm); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "Failed to get hdmi top irq\n"); + return irq; + } + + ret = devm_request_threaded_irq(dev, irq, dw_hdmi_top_irq, + dw_hdmi_top_thread_irq, IRQF_SHARED, + "dw_hdmi_top_irq", meson_dw_hdmi); + if (ret) { + dev_err(dev, "Failed to request hdmi top irq\n"); + return ret; + } + + /* Encoder */ + + drm_encoder_helper_add(encoder, &meson_venc_hdmi_encoder_helper_funcs); + + ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs, + DRM_MODE_ENCODER_TMDS, "meson_hdmi"); + if (ret) { + dev_err(priv->dev, "Failed to init HDMI encoder\n"); + return ret; + } + + encoder->possible_crtcs = BIT(0); + + DRM_DEBUG_DRIVER("encoder initialized\n"); + + /* Enable clocks */ + regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, 0xffff, 0x100); + + /* Bring HDMITX MEM output of power down */ + regmap_update_bits(priv->hhi, HHI_MEM_PD_REG0, 0xff << 8, 0); + + /* Reset HDMITX APB & TX & PHY */ + reset_control_reset(meson_dw_hdmi->hdmitx_apb); + reset_control_reset(meson_dw_hdmi->hdmitx_ctrl); + reset_control_reset(meson_dw_hdmi->hdmitx_phy); + + /* Enable APB3 fail on error */ + writel_bits_relaxed(BIT(15), BIT(15), + meson_dw_hdmi->hdmitx + HDMITX_TOP_CTRL_REG); + writel_bits_relaxed(BIT(15), BIT(15), + meson_dw_hdmi->hdmitx + HDMITX_DWC_CTRL_REG); + + /* Bring out of reset */ + dw_hdmi_top_write(meson_dw_hdmi, HDMITX_TOP_SW_RESET, 0); + + msleep(20); + + dw_hdmi_top_write(meson_dw_hdmi, HDMITX_TOP_CLK_CNTL, 0xff); + + /* Enable HDMI-TX Interrupt */ + dw_hdmi_top_write(meson_dw_hdmi, HDMITX_TOP_INTR_STAT_CLR, + HDMITX_TOP_INTR_CORE); + + dw_hdmi_top_write(meson_dw_hdmi, HDMITX_TOP_INTR_MASKN, + HDMITX_TOP_INTR_CORE); + + /* Bridge / Connector */ + + dw_plat_data->mode_valid = dw_hdmi_mode_valid; + dw_plat_data->phy_ops = &meson_dw_hdmi_phy_ops; + dw_plat_data->phy_name = "meson_dw_hdmi_phy"; + dw_plat_data->phy_data = meson_dw_hdmi; + dw_plat_data->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24; + dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709; + + ret = dw_hdmi_bind(pdev, encoder, &meson_dw_hdmi->dw_plat_data); + if (ret) + return ret; + + DRM_DEBUG_DRIVER("HDMI controller initialized\n"); + + return 0; +} + +static void meson_dw_hdmi_unbind(struct device *dev, struct device *master, + void *data) +{ + dw_hdmi_unbind(dev); +} + +static const struct component_ops meson_dw_hdmi_ops = { + .bind = meson_dw_hdmi_bind, + .unbind = meson_dw_hdmi_unbind, +}; + +static int meson_dw_hdmi_probe(struct platform_device *pdev) +{ + return component_add(&pdev->dev, &meson_dw_hdmi_ops); +} + +static int meson_dw_hdmi_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &meson_dw_hdmi_ops); + + return 0; +} + +static const struct of_device_id meson_dw_hdmi_of_table[] = { + { .compatible = "amlogic,meson-gxbb-dw-hdmi" }, + { .compatible = "amlogic,meson-gxl-dw-hdmi" }, + { .compatible = "amlogic,meson-gxm-dw-hdmi" }, + { } +}; +MODULE_DEVICE_TABLE(of, meson_dw_hdmi_of_table); + +static struct platform_driver meson_dw_hdmi_platform_driver = { + .probe = meson_dw_hdmi_probe, + .remove = meson_dw_hdmi_remove, + .driver = { + .name = DRIVER_NAME, + .of_match_table = meson_dw_hdmi_of_table, + }, +}; +module_platform_driver(meson_dw_hdmi_platform_driver); + +MODULE_AUTHOR("Neil Armstrong narmstrong@baylibre.com"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.h b/drivers/gpu/drm/meson/meson_dw_hdmi.h new file mode 100644 index 0000000..0b81183 --- /dev/null +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.h @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2016 BayLibre, SAS + * Author: Neil Armstrong narmstrong@baylibre.com + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see http://www.gnu.org/licenses/. + */ + +#ifndef __MESON_DW_HDMI_H +#define __MESON_DW_HDMI_H + +/* + * Bit 7 RW Reserved. Default 1. + * Bit 6 RW Reserved. Default 1. + * Bit 5 RW Reserved. Default 1. + * Bit 4 RW sw_reset_phyif: PHY interface. 1=Apply reset; 0=Release from reset. + * Default 1. + * Bit 3 RW sw_reset_intr: interrupt module. 1=Apply reset; + * 0=Release from reset. + * Default 1. + * Bit 2 RW sw_reset_mem: KSV/REVOC mem. 1=Apply reset; 0=Release from reset. + * Default 1. + * Bit 1 RW sw_reset_rnd: random number interface to HDCP. 1=Apply reset; + * 0=Release from reset. Default 1. + * Bit 0 RW sw_reset_core: connects to IP's ~irstz. 1=Apply reset; + * 0=Release from reset. Default 1. + */ +#define HDMITX_TOP_SW_RESET (0x000) + +/* + * Bit 12 RW i2s_ws_inv:1=Invert i2s_ws; 0=No invert. Default 0. + * Bit 11 RW i2s_clk_inv: 1=Invert i2s_clk; 0=No invert. Default 0. + * Bit 10 RW spdif_clk_inv: 1=Invert spdif_clk; 0=No invert. Default 0. + * Bit 9 RW tmds_clk_inv: 1=Invert tmds_clk; 0=No invert. Default 0. + * Bit 8 RW pixel_clk_inv: 1=Invert pixel_clk; 0=No invert. Default 0. + * Bit 4 RW cec_clk_en: 1=enable cec_clk; 0=disable. Default 0. + * Bit 3 RW i2s_clk_en: 1=enable i2s_clk; 0=disable. Default 0. + * Bit 2 RW spdif_clk_en: 1=enable spdif_clk; 0=disable. Default 0. + * Bit 1 RW tmds_clk_en: 1=enable tmds_clk; 0=disable. Default 0. + * Bit 0 RW pixel_clk_en: 1=enable pixel_clk; 0=disable. Default 0. + */ +#define HDMITX_TOP_CLK_CNTL (0x001) + +/* + * Bit 11: 0 RW hpd_valid_width: filter out width <= M*1024. Default 0. + * Bit 15:12 RW hpd_glitch_width: filter out glitch <= N. Default 0. + */ +#define HDMITX_TOP_HPD_FILTER (0x002) + +/* + * intr_maskn: MASK_N, one bit per interrupt source. + * 1=Enable interrupt source; 0=Disable interrupt source. Default 0. + * [ 4] hdcp22_rndnum_err + * [ 3] nonce_rfrsh_rise + * [ 2] hpd_fall_intr + * [ 1] hpd_rise_intr + * [ 0] core_intr + */ +#define HDMITX_TOP_INTR_MASKN (0x003) + +/* + * Bit 30: 0 RW intr_stat: For each bit, write 1 to manually set the interrupt + * bit, read back the interrupt status. + * Bit 31 R IP interrupt status + * Bit 2 RW hpd_fall + * Bit 1 RW hpd_rise + * Bit 0 RW IP interrupt + */ +#define HDMITX_TOP_INTR_STAT (0x004) + +/* + * [4] hdcp22_rndnum_err + * [3] nonce_rfrsh_rise + * [2] hpd_fall + * [1] hpd_rise + * [0] core_intr_rise + */ +#define HDMITX_TOP_INTR_STAT_CLR (0x005) + +#define HDMITX_TOP_INTR_CORE BIT(0) +#define HDMITX_TOP_INTR_HPD_RISE BIT(1) +#define HDMITX_TOP_INTR_HPD_FALL BIT(2) + +/* Bit 14:12 RW tmds_sel: 3'b000=Output zero; 3'b001=Output normal TMDS data; + * 3'b010=Output PRBS data; 3'b100=Output shift pattern. Default 0. + * Bit 11: 9 RW shift_pttn_repeat: 0=New pattern every clk cycle; 1=New pattern + * every 2 clk cycles; ...; 7=New pattern every 8 clk cycles. Default 0. + * Bit 8 RW shift_pttn_en: 1= Enable shift pattern generator; 0=Disable. + * Default 0. + * Bit 4: 3 RW prbs_pttn_mode: 0=PRBS11; 1=PRBS15; 2=PRBS7; 3=PRBS31. Default 0. + * Bit 2: 1 RW prbs_pttn_width: 0=idle; 1=output 8-bit pattern; + * 2=Output 1-bit pattern; 3=output 10-bit pattern. Default 0. + * Bit 0 RW prbs_pttn_en: 1=Enable PRBS generator; 0=Disable. Default 0. + */ +#define HDMITX_TOP_BIST_CNTL (0x006) + +/* Bit 29:20 RW shift_pttn_data[59:50]. Default 0. */ +/* Bit 19:10 RW shift_pttn_data[69:60]. Default 0. */ +/* Bit 9: 0 RW shift_pttn_data[79:70]. Default 0. */ +#define HDMITX_TOP_SHIFT_PTTN_012 (0x007) + +/* Bit 29:20 RW shift_pttn_data[29:20]. Default 0. */ +/* Bit 19:10 RW shift_pttn_data[39:30]. Default 0. */ +/* Bit 9: 0 RW shift_pttn_data[49:40]. Default 0. */ +#define HDMITX_TOP_SHIFT_PTTN_345 (0x008) + +/* Bit 19:10 RW shift_pttn_data[ 9: 0]. Default 0. */ +/* Bit 9: 0 RW shift_pttn_data[19:10]. Default 0. */ +#define HDMITX_TOP_SHIFT_PTTN_67 (0x009) + +/* Bit 25:16 RW tmds_clk_pttn[19:10]. Default 0. */ +/* Bit 9: 0 RW tmds_clk_pttn[ 9: 0]. Default 0. */ +#define HDMITX_TOP_TMDS_CLK_PTTN_01 (0x00A) + +/* Bit 25:16 RW tmds_clk_pttn[39:30]. Default 0. */ +/* Bit 9: 0 RW tmds_clk_pttn[29:20]. Default 0. */ +#define HDMITX_TOP_TMDS_CLK_PTTN_23 (0x00B) + +/* Bit 1 RW shift_tmds_clk_pttn:1=Enable shifting clk pattern, + * used when TMDS CLK rate = TMDS character rate /4. Default 0. + * Bit 0 R Reserved. Default 0. + * [ 1] shift_tmds_clk_pttn + * [ 0] load_tmds_clk_pttn + */ +#define HDMITX_TOP_TMDS_CLK_PTTN_CNTL (0x00C) + +/* Bit 0 RW revocmem_wr_fail: Read back 1 to indicate Host write REVOC MEM + * failure, write 1 to clear the failure flag. Default 0. + */ +#define HDMITX_TOP_REVOCMEM_STAT (0x00D) + +/* Bit 0 R filtered HPD status. */ +#define HDMITX_TOP_STAT0 (0x00E) + +#endif /* __MESON_DW_HDMI_H */

The HDMI modes needs more CMA memory to be reserved at boot-time.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi index 5d995f7..94c6f95 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi @@ -71,6 +71,14 @@ reg = <0x0 0x10000000 0x0 0x200000>; no-map; }; + + linux,cma { + compatible = "shared-dma-pool"; + reusable; + size = <0x0 0xbc00000>; + alignment = <0x0 0x400000>; + linux,cma-default; + }; };

cpus {

This binding describes the Amlogic Meson specific extension to the Synopsys Designware HDMI Controller.

Acked-by: Rob Herring robh@kernel.org Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- .../bindings/display/amlogic,meson-dw-hdmi.txt | 111 +++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt

diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt new file mode 100644 index 0000000..7f040ed --- /dev/null +++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt @@ -0,0 +1,111 @@ +Amlogic specific extensions to the Synopsys Designware HDMI Controller +====================================================================== + +The Amlogic Meson Synopsys Designware Integration is composed of : +- A Synopsys DesignWare HDMI Controller IP +- A TOP control block controlling the Clocks and PHY +- A custom HDMI PHY in order to convert video to TMDS signal + ___________________________________ +| HDMI TOP |<= HPD +|___________________________________| +| | | +| Synopsys HDMI | HDMI PHY |=> TMDS +| Controller |________________| +|___________________________________|<=> DDC + +The HDMI TOP block only supports HPD sensing. +The Synopsys HDMI Controller interrupt is routed through the +TOP Block interrupt. +Communication to the TOP Block and the Synopsys HDMI Controller is done +via a pair of dedicated addr+read/write registers. +The HDMI PHY is configured by registers in the HHI register block. + +Pixel data arrives in 4:4:4 format from the VENC block and the VPU HDMI mux +selects either the ENCI encoder for the 576i or 480i formats or the ENCP +encoder for all the other formats including interlaced HD formats. + +The VENC uses a DVI encoder on top of the ENCI or ENCP encoders to generate +DVI timings for the HDMI controller. + +Amlogic Meson GXBB, GXL and GXM SoCs families embeds the Synopsys DesignWare +HDMI TX IP version 2.01a with HDCP and I2C & S/PDIF +audio source interfaces. + +Required properties: +- compatible: value should be different for each SoC family as : + - GXBB (S905) : "amlogic,meson-gxbb-dw-hdmi" + - GXL (S905X, S905D) : "amlogic,meson-gxl-dw-hdmi" + - GXM (S912) : "amlogic,meson-gxm-dw-hdmi" + followed by the common "amlogic,meson-gx-dw-hdmi" +- reg: Physical base address and length of the controller's registers. +- interrupts: The HDMI interrupt number +- clocks, clock-names : must have the phandles to the HDMI iahb and isfr clocks, + and the Amlogic Meson venci clocks as described in + Documentation/devicetree/bindings/clock/clock-bindings.txt, + the clocks are soc specific, the clock-names should be "iahb", "isfr", "venci" +- resets, resets-names: must have the phandles to the HDMI apb, glue and phy + resets as described in : + Documentation/devicetree/bindings/reset/reset.txt, + the reset-names should be "hdmitx_apb", "hdmitx", "hdmitx_phy" + +Required nodes: + +The connections to the HDMI ports are modeled using the OF graph +bindings specified in Documentation/devicetree/bindings/graph.txt. + +The following table lists for each supported model the port number +corresponding to each HDMI output and input. + + Port 0 Port 1 +----------------------------------------- + S905 (GXBB) VENC Input TMDS Output + S905X (GXL) VENC Input TMDS Output + S905D (GXL) VENC Input TMDS Output + S912 (GXM) VENC Input TMDS Output + +Example: + +hdmi-connector { + compatible = "hdmi-connector"; + type = "a"; + + port { + hdmi_connector_in: endpoint { + remote-endpoint = <&hdmi_tx_tmds_out>; + }; + }; +}; + +hdmi_tx: hdmi-tx@c883a000 { + compatible = "amlogic,meson-gxbb-dw-hdmi", "amlogic,meson-gx-dw-hdmi"; + reg = <0x0 0xc883a000 0x0 0x1c>; + interrupts = <GIC_SPI 57 IRQ_TYPE_EDGE_RISING>; + resets = <&reset RESET_HDMITX_CAPB3>, + <&reset RESET_HDMI_SYSTEM_RESET>, + <&reset RESET_HDMI_TX>; + reset-names = "hdmitx_apb", "hdmitx", "hdmitx_phy"; + clocks = <&clkc CLKID_HDMI_PCLK>, + <&clkc CLKID_CLK81>, + <&clkc CLKID_GCLK_VENCI_INT0>; + clock-names = "isfr", "iahb", "venci"; + #address-cells = <1>; + #size-cells = <0>; + + /* VPU VENC Input */ + hdmi_tx_venc_port: port@0 { + reg = <0>; + + hdmi_tx_in: endpoint { + remote-endpoint = <&hdmi_tx_out>; + }; + }; + + /* TMDS Output */ + hdmi_tx_tmds_port: port@1 { + reg = <1>; + + hdmi_tx_tmds_out: endpoint { + remote-endpoint = <&hdmi_connector_in>; + }; + }; +};

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- Documentation/gpu/index.rst | 1 + Documentation/gpu/meson.rst | 61 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) create mode 100644 Documentation/gpu/meson.rst

diff --git a/Documentation/gpu/index.rst b/Documentation/gpu/index.rst index e998ee0..7eceb97 100644 --- a/Documentation/gpu/index.rst +++ b/Documentation/gpu/index.rst @@ -11,6 +11,7 @@ Linux GPU Driver Developer's Guide drm-kms-helpers drm-uapi i915 + meson tinydrm vc4 vga-switcheroo diff --git a/Documentation/gpu/meson.rst b/Documentation/gpu/meson.rst new file mode 100644 index 0000000..479f6f5 --- /dev/null +++ b/Documentation/gpu/meson.rst @@ -0,0 +1,61 @@ +============================================= +drm/meson AmLogic Meson Video Processing Unit +============================================= + +.. kernel-doc:: drivers/gpu/drm/meson/meson_drv.c + :doc: Video Processing Unit + +Video Processing Unit +===================== + +The Amlogic Meson Display controller is composed of several components +that are going to be documented below: + +.. code:: + + DMC|---------------VPU (Video Processing Unit)----------------|------HHI------| + | vd1 _______ _____________ _________________ | | + D |-------| |----| | | | | HDMI PLL | + D | vd2 | VIU | | Video Post | | Video Encoders |<---|-----VCLK | + R |-------| |----| Processing | | | | | + | osd2 | | | |---| Enci ----------|----|-----VDAC------| + R |-------| CSC |----| Scalers | | Encp ----------|----|----HDMI-TX----| + A | osd1 | | | Blenders | | Encl ----------|----|---------------| + M |-------|______|----|____________| |________________| | | + ___|__________________________________________________________|_______________| + +Video Input Unit +================ + +.. kernel-doc:: drivers/gpu/drm/meson/meson_viu.c + :doc: Video Input Unit + +Video Post Processing +===================== + +.. kernel-doc:: drivers/gpu/drm/meson/meson_vpp.c + :doc: Video Post Processing + +Video Encoder +============= + +.. kernel-doc:: drivers/gpu/drm/meson/meson_venc.c + :doc: Video Encoder + +Video Canvas Management +======================= + +.. kernel-doc:: drivers/gpu/drm/meson/meson_canvas.c + :doc: Canvas + +Video Clocks +============ + +.. kernel-doc:: drivers/gpu/drm/meson/meson_vclk.c + :doc: Video Clocks + +HDMI Video Output +================= + +.. kernel-doc:: drivers/gpu/drm/meson/meson_dw_hdmi.c + :doc: HDMI Output