openwrt_chaos_calmer/target/linux/gemini/patches-3.18/150-gemini-pata.patch

--- a/arch/arm/mach-gemini/include/mach/global_reg.h
+++ b/arch/arm/mach-gemini/include/mach/global_reg.h
@@ -227,7 +227,13 @@
 #define USB0_PLUG_MINIB			(1 << 29)
 #define GMAC_GMII			(1 << 28)
 #define GMAC_1_ENABLE			(1 << 27)
-/* TODO: define ATA/SATA bits */
+/* 011 - ata0 <-> sata0, sata1; bring out ata1
+ * 010 - ata1 <-> sata1, sata0; bring out ata0
+ * 001 - ata0 <-> sata0, ata1 <-> sata1; bring out ata1
+ * 000 - ata0 <-> sata0, ata1 <-> sata1; bring out ata0 */
+#define IDE_IOMUX_MASK			(7 << 24)
+#define IDE_IOMUX_SATA1_SATA0	(2 << 24)
+#define IDE_IOMUX_SATA0_SATA1	(3 << 24)
 #define USB1_VBUS_ON			(1 << 23)
 #define USB0_VBUS_ON			(1 << 22)
 #define APB_CLKOUT_ENABLE		(1 << 21)
--- a/arch/arm/mach-gemini/irq.c
+++ b/arch/arm/mach-gemini/irq.c
@@ -89,6 +89,9 @@ void __init gemini_init_irq(void)
 			irq_set_handler(i, handle_edge_irq);
 			mode |= 1 << i;
 			level |= 1 << i;
+ 		} else if (i >= IRQ_IDE0 && i <= IRQ_IDE1) {
+ 			irq_set_handler(i, handle_edge_irq);
+ 			mode |= 1 << i;
 		} else {			
 			irq_set_handler(i, handle_level_irq);
 		}
--- a/arch/arm/mach-gemini/common.h
+++ b/arch/arm/mach-gemini/common.h
@@ -29,6 +29,7 @@ extern int platform_register_pflash(unsi
 extern int platform_register_watchdog(void);
 extern int platform_register_ethernet(struct gemini_gmac_platform_data *pdata);
 extern int platform_register_usb(unsigned int id);
+extern int platform_register_pata(unsigned int id);
 
 extern void gemini_restart(enum reboot_mode mode, const char *cmd);
 
--- a/arch/arm/mach-gemini/devices.c
+++ b/arch/arm/mach-gemini/devices.c
@@ -249,3 +249,67 @@ int __init platform_register_usb(unsigne
 	return platform_device_register(&usb_device[id]);
 }
 
+static u64 pata_gemini_dmamask0 = 0xffffffffUL;
+static u64 pata_gemini_dmamask1 = 0xffffffffUL;
+
+static struct resource pata_gemini_resources0[] =
+{
+	[0] =	{
+			.start	= GEMINI_IDE0_BASE,
+			.end	= GEMINI_IDE0_BASE + 0x40,
+			.flags	= IORESOURCE_MEM,
+		},
+	[1] =	{
+			.start	= IRQ_IDE0,
+			.end	= IRQ_IDE0,
+			.flags  = IORESOURCE_IRQ,
+		},
+};
+
+static struct resource pata_gemini_resources1[] =
+{
+	[0] =	{
+			.start	= GEMINI_IDE1_BASE,
+			.end	= GEMINI_IDE1_BASE + 0x40,
+			.flags	= IORESOURCE_MEM,
+		},
+	[1] =	{
+			.start  = IRQ_IDE1,
+			.end    = IRQ_IDE1,
+			.flags  = IORESOURCE_IRQ,
+		},
+};
+
+static struct platform_device pata_gemini_devices[] =
+{
+	{
+		.name		= "pata-gemini",
+		.id		= 0,
+		.dev		=
+		{
+			.dma_mask		= &pata_gemini_dmamask0,
+			.coherent_dma_mask	= 0xffffffff,
+		},
+		.num_resources	= ARRAY_SIZE(pata_gemini_resources0),
+		.resource	= pata_gemini_resources0,
+	},
+	{
+		.name		= "pata-gemini",
+		.id		= 1,
+		.dev		=
+		{
+			.dma_mask		= &pata_gemini_dmamask1,
+			.coherent_dma_mask	= 0xffffffff,
+		},
+		.num_resources	= ARRAY_SIZE(pata_gemini_resources1),
+		.resource	= pata_gemini_resources1,
+	},
+};
+
+int __init platform_register_pata(unsigned int id)
+{
+	if (id > 1)
+		return -EINVAL;
+
+	return platform_device_register(&pata_gemini_devices[id]);
+}
--- a/arch/arm/mach-gemini/mm.c
+++ b/arch/arm/mach-gemini/mm.c
@@ -24,6 +24,11 @@ static struct map_desc gemini_io_desc[]
 		.length		= SZ_512K,
 		.type 		= MT_DEVICE,
 	}, {
+		.virtual	= (unsigned long)IO_ADDRESS(GEMINI_SATA_BASE),
+		.pfn		= __phys_to_pfn(GEMINI_SATA_BASE),
+		.length		= SZ_512K,
+		.type		= MT_DEVICE,
+	}, {
 		.virtual	= (unsigned long)IO_ADDRESS(GEMINI_UART_BASE),
 		.pfn		= __phys_to_pfn(GEMINI_UART_BASE),
 		.length		= SZ_512K,
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -539,6 +539,16 @@ config PATA_EP93XX
 
 	  If unsure, say N.
 
+config PATA_GEMINI
+	tristate "Gemini PATA support (Experimental)"
+	depends on ARCH_GEMINI
+	help
+	  This option enables support for the Gemini PATA-Controller.
+	  Note that the Gemini SoC has no native SATA-Controller but an
+	  onboard PATA-SATA bridge.
+
+	  If unsure, say N.
+
 config PATA_HPT366
 	tristate "HPT 366/368 PATA support"
 	depends on PCI
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_PATA_CS5536)	+= pata_cs5536
 obj-$(CONFIG_PATA_CYPRESS)	+= pata_cypress.o
 obj-$(CONFIG_PATA_EFAR)		+= pata_efar.o
 obj-$(CONFIG_PATA_EP93XX)	+= pata_ep93xx.o
+obj-$(CONFIG_PATA_GEMINI)	+= pata_gemini.o
 obj-$(CONFIG_PATA_HPT366)	+= pata_hpt366.o
 obj-$(CONFIG_PATA_HPT37X)	+= pata_hpt37x.o
 obj-$(CONFIG_PATA_HPT3X2N)	+= pata_hpt3x2n.o
--- a/arch/arm/mach-gemini/board-nas4220b.c
+++ b/arch/arm/mach-gemini/board-nas4220b.c
@@ -146,11 +146,28 @@ static void __init usb_ib4220b_init(void
 		GLOBAL_MISC_CTRL));
 }
 
+static void __init sata_ib4220b_init(void)
+{
+	unsigned val;
+
+	val = readl((void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+		GLOBAL_MISC_CTRL));
+	val &= ~(IDE_IOMUX_MASK | PFLASH_PADS_DISABLE);
+	val |= IDE_PADS_ENABLE;
+	writel(val, (void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+		GLOBAL_MISC_CTRL));
+
+	/* enabling ports for presence detection, master only */
+	writel(0x00000001, (void __iomem*)(IO_ADDRESS(GEMINI_SATA_BASE) + 0x18));
+	writel(0x00000001, (void __iomem*)(IO_ADDRESS(GEMINI_SATA_BASE) + 0x1c));
+}
+
 static void __init ib4220b_init(void)
 {
 	gemini_gpio_init();
 	ib4220b_gmac_init();
 	usb_ib4220b_init();
+	sata_ib4220b_init();
 	platform_register_uart();
 	platform_register_pflash(SZ_16M, NULL, 0);
 	platform_device_register(&ib4220b_led_device);
@@ -161,6 +178,8 @@ static void __init ib4220b_init(void)
 	platform_register_ethernet(&ib4220b_gmac_data);
 	platform_register_usb(0);
 	platform_register_usb(1);
+	platform_register_pata(0);
+	platform_register_pata(1);
 }
 
 MACHINE_START(NAS4220B, "Raidsonic NAS IB-4220-B")