sunxi: Introduce a hidden SUNXI_GEN_SUNxI Kconfig bool

sun6i and newer (derived) SoCs such as the sun8i-a23, sun8i-a33 and sun9i
have a various things in common, like having separate ahb reset control
registers, the SID living inside the pmic, custom pmic busses, new style
watchdog, etc.

This commit introduces a new hidden SUNXI_GEN_SUN6I Kconfig bool which can be
used to check for these features avoiding the need for an ever growing list
of "#if defined CONFIG_MACH_SUN?I" conditionals as we add support for more
"new style" sunxi SoCs.

Note that this commit changes the behavior of the gmac and hdmi code for
sun8i and the upcoming sun9i devices. This does not matter as sun8i does
not have gmac nor hdmi, and sun9i has new hardware-blocks for these so
the old code will not work there.

Also this is intentional as if a sun8i / sun9i variant which does use the
old hwblocks shows up then the GEN_SUN6I code paths will be the right ones
to use.

For completeness this also adds a SUNXI_GEN_SUN4I bool for A10/A13/A20.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

arch/arm/cpu/armv7/sunxi/board.c

@@ -173,7 +173,7 @@ void board_init_f(ulong dummy)
 
 void reset_cpu(ulong addr)
 {
-#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I)
+#ifdef CONFIG_SUNXI_GEN_SUN4I
 	static const struct sunxi_wdog *wdog =
 		 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
 
@@ -185,7 +185,8 @@ void reset_cpu(ulong addr)
 		/* sun5i sometimes gets stuck without this */
 		writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
 	}
-#else /* CONFIG_MACH_SUN6I || CONFIG_MACH_SUN8I || .. */
+#endif
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	static const struct sunxi_wdog *wdog =
 		 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
 

arch/arm/cpu/armv7/sunxi/usbc.c

@@ -218,7 +218,7 @@ void sunxi_usbc_enable(int index)
 
 	setbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask);
 	setbits_le32(&ccm->ahb_gate0, sunxi_usbc->ahb_clk_mask);
-#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	setbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask);
 #endif
 
@@ -238,7 +238,7 @@ void sunxi_usbc_disable(int index)
 	if (sunxi_usbc->id != 0)
 		sunxi_usb_passby(sunxi_usbc, !SUNXI_USB_PASSBY_EN);
 
-#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask);
 #endif
 	clrbits_le32(&ccm->ahb_gate0, sunxi_usbc->ahb_clk_mask);

arch/arm/include/asm/arch-sunxi/cpu_sun4i.h

@@ -37,7 +37,7 @@
 #define SUNXI_MMC1_BASE			0x01c10000
 #define SUNXI_MMC2_BASE			0x01c11000
 #define SUNXI_MMC3_BASE			0x01c12000
-#if !defined CONFIG_MACH_SUN6I && !defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN4I
 #define SUNXI_USB0_BASE			0x01c13000
 #define SUNXI_USB1_BASE			0x01c14000
 #endif
@@ -45,12 +45,13 @@
 #define SUNXI_HDMI_BASE			0x01c16000
 #define SUNXI_SPI2_BASE			0x01c17000
 #define SUNXI_SATA_BASE			0x01c18000
-#if !defined CONFIG_MACH_SUN6I && !defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN4I
 #define SUNXI_PATA_BASE			0x01c19000
 #define SUNXI_ACE_BASE			0x01c1a000
 #define SUNXI_TVE1_BASE			0x01c1b000
 #define SUNXI_USB2_BASE			0x01c1c000
-#else
+#endif
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 #define SUNXI_USB0_BASE			0x01c19000
 #define SUNXI_USB1_BASE			0x01c1a000
 #define SUNXI_USB2_BASE			0x01c1b000

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

@@ -43,8 +43,7 @@ struct sunxi_mmc {
 	u32 chda;		/* 0x90 */
 	u32 cbda;		/* 0x94 */
 	u32 res1[26];
-#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN8I) || \
-    defined(CONFIG_MACH_SUN9I)
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	u32 res2[64];
 #endif
 	u32 fifo;		/* 0x100 / 0x200 FIFO access address */

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

@@ -67,7 +67,7 @@ struct sunxi_timer_reg {
 	struct sunxi_timer timer[6];	/* We have 6 timers */
 	u8 res2[16];
 	struct sunxi_avs avs;
-#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I)
+#ifdef CONFIG_SUNXI_GEN_SUN4I
 	struct sunxi_wdog wdog;	/* 0x90 */
 	/* XXX the following is not accurate for sun5i/sun7i */
 	struct sunxi_64cnt cnt64;	/* 0xa0 */
@@ -77,7 +77,8 @@ struct sunxi_timer_reg {
 	struct sunxi_tgp tgp[4];
 	u8 res5[8];
 	u32 cpu_cfg;
-#else /* CONFIG_MACH_SUN6I || CONFIG_MACH_SUN8I || ... */
+#endif
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	u8 res3[16];
 	struct sunxi_wdog wdog[5];	/* We have 5 watchdogs */
 #endif

board/sunxi/Kconfig

@@ -1,21 +1,40 @@
 if ARCH_SUNXI
 
+# Note only one of these may be selected at a time! But hidden choices are
+# not supported by Kconfig
+config SUNXI_GEN_SUN4I
+	bool
+	---help---
+	Select this for sunxi SoCs which have resets and clocks set up
+	as the original A10 (mach-sun4i).
+
+config SUNXI_GEN_SUN6I
+	bool
+	---help---
+	Select this for sunxi SoCs which have sun6i like periphery, like
+	separate ahb reset control registers, custom pmic bus, new style
+	watchdog, etc.
+
+
 choice
 	prompt "Sunxi SoC Variant"
 
 config MACH_SUN4I
 	bool "sun4i (Allwinner A10)"
 	select CPU_V7
+	select SUNXI_GEN_SUN4I
 	select SUPPORT_SPL
 
 config MACH_SUN5I
 	bool "sun5i (Allwinner A13)"
 	select CPU_V7
+	select SUNXI_GEN_SUN4I
 	select SUPPORT_SPL
 
 config MACH_SUN6I
 	bool "sun6i (Allwinner A31)"
 	select CPU_V7
+	select SUNXI_GEN_SUN6I
 	select SUPPORT_SPL
 
 config MACH_SUN7I
@@ -23,12 +42,14 @@ config MACH_SUN7I
 	select CPU_V7
 	select CPU_V7_HAS_NONSEC
 	select CPU_V7_HAS_VIRT
+	select SUNXI_GEN_SUN4I
 	select SUPPORT_SPL
 	select ARMV7_BOOT_SEC_DEFAULT if OLD_SUNXI_KERNEL_COMPAT
 
 config MACH_SUN8I
 	bool "sun8i (Allwinner A23)"
 	select CPU_V7
+	select SUNXI_GEN_SUN6I
 	select SUPPORT_SPL
 
 endchoice

board/sunxi/gmac.c

@@ -13,11 +13,11 @@ int sunxi_gmac_initialize(bd_t *bis)
 		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 
 	/* Set up clock gating */
-#ifndef CONFIG_MACH_SUN6I
-	setbits_le32(&ccm->ahb_gate1, 0x1 << AHB_GATE_OFFSET_GMAC);
-#else
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	setbits_le32(&ccm->ahb_reset0_cfg, 0x1 << AHB_RESET_OFFSET_GMAC);
 	setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_GMAC);
+#else
+	setbits_le32(&ccm->ahb_gate1, 0x1 << AHB_GATE_OFFSET_GMAC);
 #endif
 
 	/* Set MII clock */

drivers/mmc/sunxi_mmc.c

@@ -151,8 +151,7 @@ static int mmc_clk_io_on(int sdc_no)
 	/* config ahb clock */
 	setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
 
-#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN8I) || \
-    defined(CONFIG_MACH_SUN9I)
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	/* unassert reset */
 	setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
 #endif

drivers/video/sunxi_display.c

@@ -84,7 +84,7 @@ static int sunxi_hdmi_hpd_detect(int hpd_delay)
 			CCM_HDMI_CTRL_PLL3);
 
 	/* Set ahb gating to pass */
-#ifdef CONFIG_MACH_SUN6I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
 #endif
 	setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
@@ -113,7 +113,7 @@ static void sunxi_hdmi_shutdown(void)
 	clrbits_le32(&hdmi->ctrl, SUNXI_HDMI_CTRL_ENABLE);
 	clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_GATE);
 	clrbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
-#ifdef CONFIG_MACH_SUN6I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	clrbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
 #endif
 	clock_set_pll3(0);
@@ -404,7 +404,7 @@ static void sunxi_composer_init(void)
 
 	sunxi_frontend_init();
 
-#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	/* Reset off */
 	setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE_BE0);
 #endif
@@ -549,7 +549,7 @@ static void sunxi_lcdc_init(void)
 		(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
 
 	/* Reset off */
-#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_LCD0);
 #else
 	setbits_le32(&ccm->lcd0_ch0_clk_cfg, CCM_LCD_CH0_CTRL_RST);
@@ -942,7 +942,7 @@ static void sunxi_vga_enable(void)
 
 static void sunxi_drc_init(void)
 {
-#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+#ifdef CONFIG_SUNXI_GEN_SUN6I
 	struct sunxi_ccm_reg * const ccm =
 		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;