[PATCH 05/11] drm/meson: add support for HDMI clock support
Neil Armstrong
narmstrong at baylibre.com
Thu Mar 2 07:40:01 PST 2017
This patchs adds support for the supported HDMI modes clocks frequencies.
Signed-off-by: Neil Armstrong <narmstrong at 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..45cf1f6 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 (of_machine_is_compatible("amlogic,meson-gxbb")) {
+ 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 (of_machine_is_compatible("amlogic,meson-gxm") ||
+ of_machine_is_compatible("amlogic,meson-gxl")) {
+ 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 (of_machine_is_compatible("amlogic,meson-gxbb"))
+ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
+ 3 << 16, pll_od_to_reg(od1) << 16);
+ else if (of_machine_is_compatible("amlogic,meson-gxm") ||
+ of_machine_is_compatible("amlogic,meson-gxl"))
+ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
+ 3 << 21, pll_od_to_reg(od1) << 21);
+
+ if (of_machine_is_compatible("amlogic,meson-gxbb"))
+ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
+ 3 << 22, pll_od_to_reg(od2) << 22);
+ else if (of_machine_is_compatible("amlogic,meson-gxm") ||
+ of_machine_is_compatible("amlogic,meson-gxl"))
+ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
+ 3 << 23, pll_od_to_reg(od2) << 23);
+
+ if (of_machine_is_compatible("amlogic,meson-gxbb"))
+ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
+ 3 << 18, pll_od_to_reg(od3) << 18);
+ else if (of_machine_is_compatible("amlogic,meson-gxm") ||
+ of_machine_is_compatible("amlogic,meson-gxl"))
+ 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;
}
}
--
1.9.1
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