Initial import

1 files changed, 159 insertions, 0 deletions

diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
new file mode 100644
index 000000000..9bda46f1f
--- /dev/null
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright STMicroelectronics, 2007.
+ *
+ *  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, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/dma-mapping.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+
+#include <asm/cacheflush.h>
+#include <asm/hardware/cache-l2x0.h>
+
+/*
+ * These are the only hard-coded address offsets we still have to use.
+ */
+#define NOMADIK_FSMC_BASE	0x10100000	/* FSMC registers */
+#define NOMADIK_SDRAMC_BASE	0x10110000	/* SDRAM Controller */
+#define NOMADIK_CLCDC_BASE	0x10120000	/* CLCD Controller */
+#define NOMADIK_MDIF_BASE	0x10120000	/* MDIF */
+#define NOMADIK_DMA0_BASE	0x10130000	/* DMA0 Controller */
+#define NOMADIK_IC_BASE		0x10140000	/* Vectored Irq Controller */
+#define NOMADIK_DMA1_BASE	0x10150000	/* DMA1 Controller */
+#define NOMADIK_USB_BASE	0x10170000	/* USB-OTG conf reg base */
+#define NOMADIK_CRYP_BASE	0x10180000	/* Crypto processor */
+#define NOMADIK_SHA1_BASE	0x10190000	/* SHA-1 Processor */
+#define NOMADIK_XTI_BASE	0x101A0000	/* XTI */
+#define NOMADIK_RNG_BASE	0x101B0000	/* Random number generator */
+#define NOMADIK_SRC_BASE	0x101E0000	/* SRC base */
+#define NOMADIK_WDOG_BASE	0x101E1000	/* Watchdog */
+#define NOMADIK_MTU0_BASE	0x101E2000	/* Multiple Timer 0 */
+#define NOMADIK_MTU1_BASE	0x101E3000	/* Multiple Timer 1 */
+#define NOMADIK_GPIO0_BASE	0x101E4000	/* GPIO0 */
+#define NOMADIK_GPIO1_BASE	0x101E5000	/* GPIO1 */
+#define NOMADIK_GPIO2_BASE	0x101E6000	/* GPIO2 */
+#define NOMADIK_GPIO3_BASE	0x101E7000	/* GPIO3 */
+#define NOMADIK_RTC_BASE	0x101E8000	/* Real Time Clock base */
+#define NOMADIK_PMU_BASE	0x101E9000	/* Power Management Unit */
+#define NOMADIK_OWM_BASE	0x101EA000	/* One wire master */
+#define NOMADIK_SCR_BASE	0x101EF000	/* Secure Control registers */
+#define NOMADIK_MSP2_BASE	0x101F0000	/* MSP 2 interface */
+#define NOMADIK_MSP1_BASE	0x101F1000	/* MSP 1 interface */
+#define NOMADIK_UART2_BASE	0x101F2000	/* UART 2 interface */
+#define NOMADIK_SSIRx_BASE	0x101F3000	/* SSI 8-ch rx interface */
+#define NOMADIK_SSITx_BASE	0x101F4000	/* SSI 8-ch tx interface */
+#define NOMADIK_MSHC_BASE	0x101F5000	/* Memory Stick(Pro) Host */
+#define NOMADIK_SDI_BASE	0x101F6000	/* SD-card/MM-Card */
+#define NOMADIK_I2C1_BASE	0x101F7000	/* I2C1 interface */
+#define NOMADIK_I2C0_BASE	0x101F8000	/* I2C0 interface */
+#define NOMADIK_MSP0_BASE	0x101F9000	/* MSP 0 interface */
+#define NOMADIK_FIRDA_BASE	0x101FA000	/* FIrDA interface */
+#define NOMADIK_UART1_BASE	0x101FB000	/* UART 1 interface */
+#define NOMADIK_SSP_BASE	0x101FC000	/* SSP interface */
+#define NOMADIK_UART0_BASE	0x101FD000	/* UART 0 interface */
+#define NOMADIK_SGA_BASE	0x101FE000	/* SGA interface */
+#define NOMADIK_L2CC_BASE	0x10210000	/* L2 Cache controller */
+#define NOMADIK_UART1_VBASE	0xF01FB000
+
+/* This is needed for LL-debug/earlyprintk/debug-macro.S */
+static struct map_desc cpu8815_io_desc[] __initdata = {
+	{
+		.virtual =	NOMADIK_UART1_VBASE,
+		.pfn =		__phys_to_pfn(NOMADIK_UART1_BASE),
+		.length =	SZ_4K,
+		.type =		MT_DEVICE,
+	},
+};
+
+static void __init cpu8815_map_io(void)
+{
+	iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
+}
+
+static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
+{
+	void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
+
+	/* FIXME: use egpio when implemented */
+
+	/* Write anything to Reset status register */
+	writel(1, srcbase + 0x18);
+}
+
+/*
+ * This GPIO pin turns on a line that is used to detect card insertion
+ * on this board.
+ */
+static int __init cpu8815_mmcsd_init(void)
+{
+	struct device_node *cdbias;
+	int gpio, err;
+
+	cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
+	if (!cdbias) {
+		pr_info("could not find MMC/SD card detect bias node\n");
+		return 0;
+	}
+	gpio = of_get_gpio(cdbias, 0);
+	if (gpio < 0) {
+		pr_info("could not obtain MMC/SD card detect bias GPIO\n");
+		return 0;
+	}
+	err = gpio_request(gpio, "card detect bias");
+	if (err) {
+		pr_info("failed to request card detect bias GPIO %d\n", gpio);
+		return -ENODEV;
+	}
+	err = gpio_direction_output(gpio, 0);
+	if (err){
+		pr_info("failed to set GPIO %d as output, low\n", gpio);
+		return err;
+	}
+	pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
+	return 0;
+}
+device_initcall(cpu8815_mmcsd_init);
+
+static const char * cpu8815_board_compat[] = {
+	"st,nomadik-nhk-15",
+	"calaosystems,usb-s8815",
+	NULL,
+};
+
+DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
+	/* At full speed latency must be >=2, so 0x249 in low bits */
+	.l2c_aux_val	= 0x00700249,
+	.l2c_aux_mask	= 0xfe0fefff,
+	.map_io		= cpu8815_map_io,
+	.restart	= cpu8815_restart,
+	.dt_compat      = cpu8815_board_compat,
+MACHINE_END