sunxi: Add clock support for DE2/HDMI/TCON on newer SoCs

This is needed for HDMI, which will be added later.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/include/asm/arch-sunxi/clock_sun6i.h

@@ -67,13 +67,22 @@ struct sunxi_ccm_reg {
 	u32 dram_pll_cfg;	/* 0xf8 PLL_DDR cfg register, A33 only */
 	u32 mbus_reset;		/* 0xfc MBUS reset control, A33 only */
 	u32 dram_clk_gate;	/* 0x100 DRAM module gating */
+#ifdef CONFIG_SUNXI_DE2
+	u32 de_clk_cfg;		/* 0x104 DE module clock */
+#else
 	u32 be0_clk_cfg;	/* 0x104 BE0 module clock */
+#endif
 	u32 be1_clk_cfg;	/* 0x108 BE1 module clock */
 	u32 fe0_clk_cfg;	/* 0x10c FE0 module clock */
 	u32 fe1_clk_cfg;	/* 0x110 FE1 module clock */
 	u32 mp_clk_cfg;		/* 0x114 MP module clock */
+#ifdef CONFIG_SUNXI_DE2
+	u32 lcd0_clk_cfg;	/* 0x118 LCD0 module clock */
+	u32 lcd1_clk_cfg;	/* 0x11c LCD1 module clock */
+#else
 	u32 lcd0_ch0_clk_cfg;	/* 0x118 LCD0 CH0 module clock */
 	u32 lcd1_ch0_clk_cfg;	/* 0x11c LCD1 CH0 module clock */
+#endif
 	u32 reserved14[3];
 	u32 lcd0_ch1_clk_cfg;	/* 0x12c LCD0 CH1 module clock */
 	u32 lcd1_ch1_clk_cfg;	/* 0x130 LCD1 CH1 module clock */
@@ -85,7 +94,11 @@ struct sunxi_ccm_reg {
 	u32 dmic_clk_cfg;	/* 0x148 Digital Mic module clock*/
 	u32 reserved15;
 	u32 hdmi_clk_cfg;	/* 0x150 HDMI module clock */
+#ifdef CONFIG_SUNXI_DE2
+	u32 hdmi_slow_clk_cfg;	/* 0x154 HDMI slow module clock */
+#else
 	u32 ps_clk_cfg;		/* 0x154 PS module clock */
+#endif
 	u32 mtc_clk_cfg;	/* 0x158 MTC module clock */
 	u32 mbus0_clk_cfg;	/* 0x15c MBUS0 module clock */
 	u32 mbus1_clk_cfg;	/* 0x160 MBUS1 module clock */
@@ -193,6 +206,7 @@ struct sunxi_ccm_reg {
 #define CCM_PLL3_CTRL_N_MASK		(0x7f << CCM_PLL3_CTRL_N_SHIFT)
 #define CCM_PLL3_CTRL_N(n)		((((n) - 1) & 0x7f) << 8)
 #define CCM_PLL3_CTRL_INTEGER_MODE	(0x1 << 24)
+#define CCM_PLL3_CTRL_LOCK		(0x1 << 28)
 #define CCM_PLL3_CTRL_EN		(0x1 << 31)
 
 #define CCM_PLL5_CTRL_M(n)		((((n) - 1) & 0x3) << 0)
@@ -222,6 +236,16 @@ struct sunxi_ccm_reg {
 #define CCM_MIPI_PLL_CTRL_LDO_EN	(0x3 << 22)
 #define CCM_MIPI_PLL_CTRL_EN		(0x1 << 31)
 
+#define CCM_PLL10_CTRL_M_SHIFT		0
+#define CCM_PLL10_CTRL_M_MASK		(0xf << CCM_PLL10_CTRL_M_SHIFT)
+#define CCM_PLL10_CTRL_M(n)		((((n) - 1) & 0xf) << 0)
+#define CCM_PLL10_CTRL_N_SHIFT		8
+#define CCM_PLL10_CTRL_N_MASK		(0x7f << CCM_PLL10_CTRL_N_SHIFT)
+#define CCM_PLL10_CTRL_N(n)		((((n) - 1) & 0x7f) << 8)
+#define CCM_PLL10_CTRL_INTEGER_MODE	(0x1 << 24)
+#define CCM_PLL10_CTRL_LOCK		(0x1 << 28)
+#define CCM_PLL10_CTRL_EN		(0x1 << 31)
+
 #define CCM_PLL11_CTRL_N(n)		((((n) - 1) & 0x3f) << 8)
 #define CCM_PLL11_CTRL_SIGMA_DELTA_EN	(0x1 << 24)
 #define CCM_PLL11_CTRL_UPD		(0x1 << 30)
@@ -273,9 +297,15 @@ struct sunxi_ccm_reg {
 #define AHB_GATE_OFFSET_DRC0		25
 #define AHB_GATE_OFFSET_DE_FE0		14
 #define AHB_GATE_OFFSET_DE_BE0		12
+#define AHB_GATE_OFFSET_DE		12
 #define AHB_GATE_OFFSET_HDMI		11
+#ifndef CONFIG_SUNXI_DE2
 #define AHB_GATE_OFFSET_LCD1		5
 #define AHB_GATE_OFFSET_LCD0		4
+#else
+#define AHB_GATE_OFFSET_LCD1		4
+#define AHB_GATE_OFFSET_LCD0		3
+#endif
 
 #define CCM_MMC_CTRL_M(x)		((x) - 1)
 #define CCM_MMC_CTRL_OCLK_DLY(x)	((x) << 8)
@@ -357,6 +387,12 @@ struct sunxi_ccm_reg {
 #define CCM_LCD_CH1_CTRL_PLL7_2X	(3 << 24)
 #define CCM_LCD_CH1_CTRL_GATE		(0x1 << 31)
 
+#define CCM_LCD0_CTRL_GATE		(0x1 << 31)
+#define CCM_LCD0_CTRL_M(n)		((((n) - 1) & 0xf) << 0)
+
+#define CCM_LCD1_CTRL_GATE		(0x1 << 31)
+#define CCM_LCD1_CTRL_M(n)		((((n) - 1) & 0xf) << 0)
+
 #define CCM_HDMI_CTRL_M(n)		((((n) - 1) & 0xf) << 0)
 #define CCM_HDMI_CTRL_PLL_MASK		(3 << 24)
 #define CCM_HDMI_CTRL_PLL3		(0 << 24)
@@ -366,6 +402,8 @@ struct sunxi_ccm_reg {
 #define CCM_HDMI_CTRL_DDC_GATE		(0x1 << 30)
 #define CCM_HDMI_CTRL_GATE		(0x1 << 31)
 
+#define CCM_HDMI_SLOW_CTRL_DDC_GATE	(1 << 31)
+
 #if defined(CONFIG_MACH_SUN50I)
 #define MBUS_CLK_DEFAULT		0x81000002 /* PLL6x2 / 3 */
 #elif defined(CONFIG_MACH_SUN8I)
@@ -393,9 +431,16 @@ struct sunxi_ccm_reg {
 #define AHB_RESET_OFFSET_DRC0		25
 #define AHB_RESET_OFFSET_DE_FE0		14
 #define AHB_RESET_OFFSET_DE_BE0		12
+#define AHB_RESET_OFFSET_DE		12
 #define AHB_RESET_OFFSET_HDMI		11
+#define AHB_RESET_OFFSET_HDMI2		10
+#ifndef CONFIG_SUNXI_DE2
 #define AHB_RESET_OFFSET_LCD1		5
 #define AHB_RESET_OFFSET_LCD0		4
+#else
+#define AHB_RESET_OFFSET_LCD1		4
+#define AHB_RESET_OFFSET_LCD0		3
+#endif
 
 /* ahb_reset2 offsets */
 #define AHB_RESET_OFFSET_EPHY		2
@@ -418,6 +463,13 @@ struct sunxi_ccm_reg {
 #define CCM_DE_CTRL_PLL10		(5 << 24)
 #define CCM_DE_CTRL_GATE		(1 << 31)
 
+/* CCM bits common to all Display Engine 2.0 clock ctrl regs */
+#define CCM_DE2_CTRL_M(n)		((((n) - 1) & 0xf) << 0)
+#define CCM_DE2_CTRL_PLL_MASK		(3 << 24)
+#define CCM_DE2_CTRL_PLL6_2X		(0 << 24)
+#define CCM_DE2_CTRL_PLL10		(1 << 24)
+#define CCM_DE2_CTRL_GATE		(0x1 << 31)
+
 /* CCU security switch, H3 only */
 #define CCM_SEC_SWITCH_MBUS_NONSEC	(1 << 2)
 #define CCM_SEC_SWITCH_BUS_NONSEC	(1 << 1)
@@ -426,7 +478,9 @@ struct sunxi_ccm_reg {
 #ifndef __ASSEMBLY__
 void clock_set_pll1(unsigned int hz);
 void clock_set_pll3(unsigned int hz);
+void clock_set_pll3_factors(int m, int n);
 void clock_set_pll5(unsigned int clk, bool sigma_delta_enable);
+void clock_set_pll10(unsigned int hz);
 void clock_set_pll11(unsigned int clk, bool sigma_delta_enable);
 void clock_set_mipi_pll(unsigned int hz);
 unsigned int clock_get_pll3(void);

arch/arm/mach-sunxi/clock_sun6i.c

@@ -35,7 +35,7 @@ void clock_init_safe(void)
 	clrbits_le32(&prcm->pll_ctrl1, PRCM_PLL_CTRL_LDO_KEY_MASK);
 #endif
 
-#ifdef CONFIG_MACH_SUN8I_R40
+#if defined(CONFIG_MACH_SUN8I_R40) || defined(CONFIG_MACH_SUN50I)
 	/* Set PLL lock enable bits and switch to old lock mode */
 	writel(GENMASK(12, 0), &ccm->pll_lock_ctrl);
 #endif
@@ -150,6 +150,22 @@ void clock_set_pll3(unsigned int clk)
 	       &ccm->pll3_cfg);
 }
 
+#ifdef CONFIG_SUNXI_DE2
+void clock_set_pll3_factors(int m, int n)
+{
+	struct sunxi_ccm_reg * const ccm =
+		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+	/* PLL3 rate = 24000000 * n / m */
+	writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE |
+	       CCM_PLL3_CTRL_N(n) | CCM_PLL3_CTRL_M(m),
+	       &ccm->pll3_cfg);
+
+	while (!(readl(&ccm->pll3_cfg) & CCM_PLL3_CTRL_LOCK))
+		;
+}
+#endif
+
 void clock_set_pll5(unsigned int clk, bool sigma_delta_enable)
 {
 	struct sunxi_ccm_reg * const ccm =
@@ -222,6 +238,28 @@ done:
 }
 #endif
 
+#ifdef CONFIG_SUNXI_DE2
+void clock_set_pll10(unsigned int clk)
+{
+	struct sunxi_ccm_reg * const ccm =
+		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+	const int m = 2; /* 12 MHz steps */
+
+	if (clk == 0) {
+		clrbits_le32(&ccm->pll10_cfg, CCM_PLL10_CTRL_EN);
+		return;
+	}
+
+	/* PLL10 rate = 24000000 * n / m */
+	writel(CCM_PLL10_CTRL_EN | CCM_PLL10_CTRL_INTEGER_MODE |
+	       CCM_PLL10_CTRL_N(clk / (24000000 / m)) | CCM_PLL10_CTRL_M(m),
+	       &ccm->pll10_cfg);
+
+	while (!(readl(&ccm->pll10_cfg) & CCM_PLL10_CTRL_LOCK))
+		;
+}
+#endif
+
 #if defined(CONFIG_MACH_SUN8I_A33) || \
     defined(CONFIG_MACH_SUN8I_R40) || \
     defined(CONFIG_MACH_SUN50I)

board/sunxi/Kconfig

@@ -58,6 +58,7 @@ config SUNXI_GEN_SUN6I
 
 config MACH_SUNXI_H3_H5
 	bool
+	select SUNXI_DE2
 	select SUNXI_GEN_SUN6I
 	select SUPPORT_SPL
 
@@ -153,6 +154,7 @@ config MACH_SUN9I
 config MACH_SUN50I
 	bool "sun50i (Allwinner A64)"
 	select ARM64
+	select SUNXI_DE2
 	select SUNXI_GEN_SUN6I
 	select SUNXI_HIGH_SRAM
 	select SUPPORT_SPL
@@ -689,6 +691,10 @@ config VIDEO_LCD_IF_PARALLEL
 config VIDEO_LCD_IF_LVDS
 	bool
 
+config SUNXI_DE2
+	bool
+	default n
+
 
 choice
 	prompt "LCD panel support"

drivers/video/sunxi/lcdc.c

@@ -74,9 +74,11 @@ void lcdc_tcon0_mode_set(struct sunxi_lcdc_reg * const lcdc,
 {
 	int bp, clk_delay, total, val;
 
+#ifndef CONFIG_SUNXI_DE2
 	/* Use tcon0 */
 	clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
 			SUNXI_LCDC_CTRL_IO_MAP_TCON0);
+#endif
 
 	clk_delay = lcdc_get_clk_delay(mode, 0);
 	writel(SUNXI_LCDC_TCON0_CTRL_ENABLE |
@@ -149,9 +151,11 @@ void lcdc_tcon1_mode_set(struct sunxi_lcdc_reg * const lcdc,
 {
 	int bp, clk_delay, total, val, yres;
 
+#ifndef CONFIG_SUNXI_DE2
 	/* Use tcon1 */
 	clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
 			SUNXI_LCDC_CTRL_IO_MAP_TCON1);
+#endif
 
 	clk_delay = lcdc_get_clk_delay(mode, 1);
 	writel(SUNXI_LCDC_TCON1_CTRL_ENABLE |