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authorMike Rapoport <mike@compulab.co.il>2007-07-18 11:31:46 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-07-20 17:45:15 +0100
commit3d50527bbf1b68e5206263ade414f0d966b00f74 (patch)
treee81f3439165bb4796c819f207fa857775ff69109 /arch/arm/mach-pxa/em-x270.c
parentb750a09385d7c464113ae8915e63541a163fbac8 (diff)
downloadop-kernel-dev-3d50527bbf1b68e5206263ade414f0d966b00f74.zip
op-kernel-dev-3d50527bbf1b68e5206263ade414f0d966b00f74.tar.gz
[ARM] 4475/2: EM-x270 board support
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/em-x270.c')
-rw-r--r--arch/arm/mach-pxa/em-x270.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
new file mode 100644
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+++ b/arch/arm/mach-pxa/em-x270.c
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+/*
+ * Support for CompuLab EM-x270 platform
+ *
+ * Copyright (C) 2007 CompuLab, Ltd.
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+
+#include <linux/dm9000.h>
+#include <linux/rtc-v3020.h>
+
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/ohci.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/bitfield.h>
+
+#include "generic.h"
+
+/* GPIO IRQ usage */
+#define EM_X270_MMC_PD (105)
+#define EM_X270_ETHIRQ IRQ_GPIO(41)
+#define EM_X270_MMC_IRQ IRQ_GPIO(13)
+
+static struct resource em_x270_dm9k_resource[] = {
+ [0] = {
+ .start = PXA_CS2_PHYS,
+ .end = PXA_CS2_PHYS + 3,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = PXA_CS2_PHYS + 8,
+ .end = PXA_CS2_PHYS + 8 + 0x3f,
+ .flags = IORESOURCE_MEM,
+ },
+ [2] = {
+ .start = EM_X270_ETHIRQ,
+ .end = EM_X270_ETHIRQ,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+/* for the moment we limit ourselves to 32bit IO until some
+ * better IO routines can be written and tested
+ */
+static struct dm9000_plat_data em_x270_dm9k_platdata = {
+ .flags = DM9000_PLATF_32BITONLY,
+};
+
+/* Ethernet device */
+static struct platform_device em_x270_dm9k = {
+ .name = "dm9000",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(em_x270_dm9k_resource),
+ .resource = em_x270_dm9k_resource,
+ .dev = {
+ .platform_data = &em_x270_dm9k_platdata,
+ }
+};
+
+/* audio device */
+static struct platform_device em_x270_audio = {
+ .name = "pxa2xx-ac97",
+ .id = -1,
+};
+
+/* WM9712 touchscreen controller. Hopefully the driver will make it to
+ * the mainstream sometime */
+static struct platform_device em_x270_ts = {
+ .name = "wm97xx-ts",
+ .id = -1,
+};
+
+/* RTC */
+static struct resource em_x270_v3020_resource[] = {
+ [0] = {
+ .start = PXA_CS4_PHYS,
+ .end = PXA_CS4_PHYS + 3,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct v3020_platform_data em_x270_v3020_platdata = {
+ .leftshift = 0,
+};
+
+static struct platform_device em_x270_rtc = {
+ .name = "v3020",
+ .num_resources = ARRAY_SIZE(em_x270_v3020_resource),
+ .resource = em_x270_v3020_resource,
+ .id = -1,
+ .dev = {
+ .platform_data = &em_x270_v3020_platdata,
+ }
+};
+
+/* NAND flash */
+#define GPIO_NAND_CS (11)
+#define GPIO_NAND_RB (56)
+
+static inline void nand_cs_on(void)
+{
+ GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
+}
+
+static void nand_cs_off(void)
+{
+ dsb();
+
+ GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
+}
+
+/* hardware specific access to control-lines */
+static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
+ unsigned int ctrl)
+{
+ struct nand_chip *this = mtd->priv;
+ unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
+
+ dsb();
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ if (ctrl & NAND_ALE)
+ nandaddr |= (1 << 3);
+ else
+ nandaddr &= ~(1 << 3);
+ if (ctrl & NAND_CLE)
+ nandaddr |= (1 << 2);
+ else
+ nandaddr &= ~(1 << 2);
+ if (ctrl & NAND_NCE)
+ nand_cs_on();
+ else
+ nand_cs_off();
+ }
+
+ dsb();
+ this->IO_ADDR_W = (void __iomem *)nandaddr;
+ if (dat != NAND_CMD_NONE)
+ writel(dat, this->IO_ADDR_W);
+
+ dsb();
+}
+
+/* read device ready pin */
+static int em_x270_nand_device_ready(struct mtd_info *mtd)
+{
+ dsb();
+
+ return GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB);
+}
+
+static struct mtd_partition em_x270_partition_info[] = {
+ [0] = {
+ .name = "em_x270-0",
+ .offset = 0,
+ .size = SZ_4M,
+ },
+ [1] = {
+ .name = "em_x270-1",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL
+ },
+};
+
+static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
+
+struct platform_nand_data em_x270_nand_platdata = {
+ .chip = {
+ .nr_chips = 1,
+ .chip_offset = 0,
+ .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
+ .partitions = em_x270_partition_info,
+ .chip_delay = 20,
+ .part_probe_types = em_x270_part_probes,
+ },
+ .ctrl = {
+ .hwcontrol = 0,
+ .dev_ready = em_x270_nand_device_ready,
+ .select_chip = 0,
+ .cmd_ctrl = em_x270_nand_cmd_ctl,
+ },
+};
+
+static struct resource em_x270_nand_resource[] = {
+ [0] = {
+ .start = PXA_CS1_PHYS,
+ .end = PXA_CS1_PHYS + 12,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device em_x270_nand = {
+ .name = "gen_nand",
+ .num_resources = ARRAY_SIZE(em_x270_nand_resource),
+ .resource = em_x270_nand_resource,
+ .id = -1,
+ .dev = {
+ .platform_data = &em_x270_nand_platdata,
+ }
+};
+
+/* platform devices */
+static struct platform_device *platform_devices[] __initdata = {
+ &em_x270_dm9k,
+ &em_x270_audio,
+ &em_x270_ts,
+ &em_x270_rtc,
+ &em_x270_nand,
+};
+
+
+/* PXA27x OHCI controller setup */
+static int em_x270_ohci_init(struct device *dev)
+{
+ /* Set the Power Control Polarity Low */
+ UHCHR = (UHCHR | UHCHR_PCPL) &
+ ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
+
+ /* enable port 2 transiever */
+ UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
+
+ return 0;
+}
+
+static struct pxaohci_platform_data em_x270_ohci_platform_data = {
+ .port_mode = PMM_PERPORT_MODE,
+ .init = em_x270_ohci_init,
+};
+
+
+static int em_x270_mci_init(struct device *dev,
+ irq_handler_t em_x270_detect_int,
+ void *data)
+{
+ int err;
+
+ /* setup GPIO for PXA27x MMC controller */
+ pxa_gpio_mode(GPIO32_MMCCLK_MD);
+ pxa_gpio_mode(GPIO112_MMCCMD_MD);
+ pxa_gpio_mode(GPIO92_MMCDAT0_MD);
+ pxa_gpio_mode(GPIO109_MMCDAT1_MD);
+ pxa_gpio_mode(GPIO110_MMCDAT2_MD);
+ pxa_gpio_mode(GPIO111_MMCDAT3_MD);
+
+ /* EM-X270 uses GPIO13 as SD power enable */
+ pxa_gpio_mode(EM_X270_MMC_PD | GPIO_OUT);
+
+ err = request_irq(EM_X270_MMC_IRQ, em_x270_detect_int,
+ IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+ "MMC card detect", data);
+ if (err) {
+ printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
+ __FUNCTION__, err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
+{
+ /*
+ FIXME: current hardware implementation does not allow to
+ enable/disable MMC power. This will be fixed in next HW releases,
+ and we'll need to add implmentation here.
+ */
+ return;
+}
+
+static void em_x270_mci_exit(struct device *dev, void *data)
+{
+ free_irq(EM_X270_MMC_IRQ, data);
+}
+
+static struct pxamci_platform_data em_x270_mci_platform_data = {
+ .ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
+ .init = em_x270_mci_init,
+ .setpower = em_x270_mci_setpower,
+ .exit = em_x270_mci_exit,
+};
+
+/* LCD 480x640 */
+static struct pxafb_mode_info em_x270_lcd_mode = {
+ .pixclock = 50000,
+ .bpp = 16,
+ .xres = 480,
+ .yres = 640,
+ .hsync_len = 8,
+ .vsync_len = 2,
+ .left_margin = 8,
+ .upper_margin = 0,
+ .right_margin = 24,
+ .lower_margin = 4,
+ .cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info em_x270_lcd = {
+ .modes = &em_x270_lcd_mode,
+ .num_modes = 1,
+ .cmap_inverse = 0,
+ .cmap_static = 0,
+ .lccr0 = LCCR0_PAS,
+ .lccr3 = LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff),
+};
+
+static void __init em_x270_init(void)
+{
+ /* setup LCD */
+ set_pxa_fb_info(&em_x270_lcd);
+
+ /* register EM-X270 platform devices */
+ platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+ /* set MCI and OHCI platform parameters */
+ pxa_set_mci_info(&em_x270_mci_platform_data);
+ pxa_set_ohci_info(&em_x270_ohci_platform_data);
+
+ /* setup STUART GPIOs */
+ pxa_gpio_mode(GPIO46_STRXD_MD);
+ pxa_gpio_mode(GPIO47_STTXD_MD);
+
+ /* setup BTUART GPIOs */
+ pxa_gpio_mode(GPIO42_BTRXD_MD);
+ pxa_gpio_mode(GPIO43_BTTXD_MD);
+ pxa_gpio_mode(GPIO44_BTCTS_MD);
+ pxa_gpio_mode(GPIO45_BTRTS_MD);
+
+ /* Setup interrupt for dm9000 */
+ set_irq_type(EM_X270_ETHIRQ, IRQT_RISING);
+}
+
+MACHINE_START(EM_X270, "Compulab EM-x270")
+ .boot_params = 0xa0000100,
+ .phys_io = 0x40000000,
+ .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
+ .map_io = pxa_map_io,
+ .init_irq = pxa27x_init_irq,
+ .timer = &pxa_timer,
+ .init_machine = em_x270_init,
+MACHINE_END
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