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authorMark Jackson <mpfj@mimc.co.uk>2008-10-13 13:14:50 +0000
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-10-13 16:36:25 +0200
commit5b50c166b79ffa0a2e3b0f3785fa5263685a81f2 (patch)
treef3dbd0082c413dccd3ed6cb5c0c9ac46cce2e4cc /arch/avr32/boards
parent198f29358a31cdca1a496d19da90bd5d6c8527ce (diff)
downloadop-kernel-dev-5b50c166b79ffa0a2e3b0f3785fa5263685a81f2.zip
op-kernel-dev-5b50c166b79ffa0a2e3b0f3785fa5263685a81f2.tar.gz
avr32: Add MIMC200 board support
Please consider the following patch which adds support for a new AVR32 based board. The board is closely based on Atmel's NGW100 reference board, but has an extra 8MByte FLASH and 128KByte FRAM. Signed-off-by: Mark Jackson <mpfj@mimc.co.uk> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32/boards')
-rw-r--r--arch/avr32/boards/mimc200/Makefile1
-rw-r--r--arch/avr32/boards/mimc200/flash.c143
-rw-r--r--arch/avr32/boards/mimc200/fram.c80
-rw-r--r--arch/avr32/boards/mimc200/setup.c237
4 files changed, 461 insertions, 0 deletions
diff --git a/arch/avr32/boards/mimc200/Makefile b/arch/avr32/boards/mimc200/Makefile
new file mode 100644
index 0000000..79c076e
--- /dev/null
+++ b/arch/avr32/boards/mimc200/Makefile
@@ -0,0 +1 @@
+obj-y += setup.o flash.o fram.o
diff --git a/arch/avr32/boards/mimc200/flash.c b/arch/avr32/boards/mimc200/flash.c
new file mode 100644
index 0000000..d83d650
--- /dev/null
+++ b/arch/avr32/boards/mimc200/flash.c
@@ -0,0 +1,143 @@
+/*
+ * MIMC200 board-specific flash initialization
+ *
+ * Copyright (C) 2008 Mercury IMC Ltd
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+
+#include <mach/smc.h>
+
+static struct smc_timing flash_timing __initdata = {
+ .ncs_read_setup = 0,
+ .nrd_setup = 15,
+ .ncs_write_setup = 0,
+ .nwe_setup = 0,
+
+ .ncs_read_pulse = 115,
+ .nrd_pulse = 110,
+ .ncs_write_pulse = 60,
+ .nwe_pulse = 60,
+
+ .read_cycle = 115,
+ .write_cycle = 100,
+};
+
+static struct smc_config flash_config __initdata = {
+ .bus_width = 2,
+ .nrd_controlled = 1,
+ .nwe_controlled = 1,
+ .byte_write = 1,
+};
+
+/* system flash definition */
+
+static struct mtd_partition flash_parts_system[] = {
+ {
+ .name = "u-boot",
+ .offset = 0x00000000,
+ .size = 0x00020000, /* 128 KiB */
+ .mask_flags = MTD_WRITEABLE,
+ },
+ {
+ .name = "root",
+ .offset = 0x00020000,
+ .size = 0x007c0000,
+ },
+ {
+ .name = "splash",
+ .offset = 0x007e0000,
+ .size = 0x00010000, /* 64KiB */
+ },
+ {
+ .name = "env",
+ .offset = 0x007f0000,
+ .size = 0x00010000,
+ .mask_flags = MTD_WRITEABLE,
+ },
+};
+
+static struct physmap_flash_data flash_system = {
+ .width = 2,
+ .nr_parts = ARRAY_SIZE(flash_parts_system),
+ .parts = flash_parts_system,
+};
+
+static struct resource flash_resource_system = {
+ .start = 0x00000000,
+ .end = 0x007fffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device_system = {
+ .name = "physmap-flash",
+ .id = 0,
+ .resource = &flash_resource_system,
+ .num_resources = 1,
+ .dev = {
+ .platform_data = &flash_system,
+ },
+};
+
+/* data flash definition */
+
+static struct mtd_partition flash_parts_data[] = {
+ {
+ .name = "data",
+ .offset = 0x00000000,
+ .size = 0x00800000,
+ },
+};
+
+static struct physmap_flash_data flash_data = {
+ .width = 2,
+ .nr_parts = ARRAY_SIZE(flash_parts_data),
+ .parts = flash_parts_data,
+};
+
+static struct resource flash_resource_data = {
+ .start = 0x08000000,
+ .end = 0x087fffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device_data = {
+ .name = "physmap-flash",
+ .id = 1,
+ .resource = &flash_resource_data,
+ .num_resources = 1,
+ .dev = {
+ .platform_data = &flash_data,
+ },
+};
+
+/* This needs to be called after the SMC has been initialized */
+static int __init mimc200_flash_init(void)
+{
+ int ret;
+
+ smc_set_timing(&flash_config, &flash_timing);
+ ret = smc_set_configuration(0, &flash_config);
+ if (ret < 0) {
+ printk(KERN_ERR "mimc200: failed to set 'System' NOR flash timing\n");
+ return ret;
+ }
+ ret = smc_set_configuration(1, &flash_config);
+ if (ret < 0) {
+ printk(KERN_ERR "mimc200: failed to set 'Data' NOR flash timing\n");
+ return ret;
+ }
+
+ platform_device_register(&flash_device_system);
+ platform_device_register(&flash_device_data);
+
+ return 0;
+}
+device_initcall(mimc200_flash_init);
diff --git a/arch/avr32/boards/mimc200/fram.c b/arch/avr32/boards/mimc200/fram.c
new file mode 100644
index 0000000..54fbd95
--- /dev/null
+++ b/arch/avr32/boards/mimc200/fram.c
@@ -0,0 +1,80 @@
+/*
+ * FRAM driver for MIMC200 board
+ *
+ * Copyright 2008 Mark Jackson <mpfj@mimc.co.uk>
+ *
+ * This module adds *very* simply support for the system's FRAM device.
+ * At the moment, this is hard-coded to the MIMC200 platform, and only
+ * supports mmap().
+ */
+
+#define FRAM_VERSION "1.0"
+
+#include <linux/miscdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/io.h>
+
+#define FRAM_BASE 0xac000000
+#define FRAM_SIZE 0x20000
+
+/*
+ * The are the file operation function for user access to /dev/fram
+ */
+
+static int fram_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ int ret;
+
+ ret = remap_pfn_range(vma,
+ vma->vm_start,
+ virt_to_phys((void *)((unsigned long)FRAM_BASE)) >> PAGE_SHIFT,
+ vma->vm_end-vma->vm_start,
+ PAGE_SHARED);
+
+ if (ret != 0)
+ return -EAGAIN;
+
+ return 0;
+}
+
+static const struct file_operations fram_fops = {
+ .owner = THIS_MODULE,
+ .mmap = fram_mmap,
+};
+
+#define FRAM_MINOR 0
+
+static struct miscdevice fram_dev = {
+ FRAM_MINOR,
+ "fram",
+ &fram_fops
+};
+
+static int __init
+fram_init(void)
+{
+ int ret;
+
+ ret = misc_register(&fram_dev);
+ if (ret) {
+ printk(KERN_ERR "fram: can't misc_register on minor=%d\n",
+ FRAM_MINOR);
+ return ret;
+ }
+ printk(KERN_INFO "FRAM memory driver v" FRAM_VERSION "\n");
+ return 0;
+}
+
+static void __exit
+fram_cleanup_module(void)
+{
+ misc_deregister(&fram_dev);
+}
+
+module_init(fram_init);
+module_exit(fram_cleanup_module);
+
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS_MISCDEV(FRAM_MINOR);
diff --git a/arch/avr32/boards/mimc200/setup.c b/arch/avr32/boards/mimc200/setup.c
new file mode 100644
index 0000000..397cbb8
--- /dev/null
+++ b/arch/avr32/boards/mimc200/setup.c
@@ -0,0 +1,237 @@
+/*
+ * Board-specific setup code for the MIMC200
+ *
+ * Copyright (C) 2008 Mercury IMC Ltd
+ *
+ * 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.
+ */
+
+extern struct atmel_lcdfb_info mimc200_lcdc_data;
+
+#include <linux/clk.h>
+#include <linux/etherdevice.h>
+#include <linux/i2c-gpio.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/leds.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+
+#include <video/atmel_lcdc.h>
+#include <linux/fb.h>
+
+#include <asm/atmel-mci.h>
+#include <linux/io.h>
+#include <asm/setup.h>
+
+#include <mach/at32ap700x.h>
+#include <mach/board.h>
+#include <mach/init.h>
+#include <mach/portmux.h>
+
+/* Oscillator frequencies. These are board-specific */
+unsigned long at32_board_osc_rates[3] = {
+ [0] = 32768, /* 32.768 kHz on RTC osc */
+ [1] = 10000000, /* 10 MHz on osc0 */
+ [2] = 12000000, /* 12 MHz on osc1 */
+};
+
+/* Initialized by bootloader-specific startup code. */
+struct tag *bootloader_tags __initdata;
+
+static struct fb_videomode __initdata tx14d14_modes[] = {
+ {
+ .name = "640x480 @ 60",
+ .refresh = 60,
+ .xres = 640, .yres = 480,
+ .pixclock = KHZ2PICOS(11666),
+
+ .left_margin = 80, .right_margin = 1,
+ .upper_margin = 13, .lower_margin = 2,
+ .hsync_len = 64, .vsync_len = 1,
+
+ .sync = 0,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+};
+
+static struct fb_monspecs __initdata mimc200_default_monspecs = {
+ .manufacturer = "HIT",
+ .monitor = "TX14D14VM1BAB",
+ .modedb = tx14d14_modes,
+ .modedb_len = ARRAY_SIZE(tx14d14_modes),
+ .hfmin = 14820,
+ .hfmax = 22230,
+ .vfmin = 60,
+ .vfmax = 73.3,
+ .dclkmax = 25200000,
+};
+
+struct atmel_lcdfb_info __initdata mimc200_lcdc_data = {
+ .default_bpp = 16,
+ .default_dmacon = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+ .default_lcdcon2 = (ATMEL_LCDC_DISTYPE_TFT
+ | ATMEL_LCDC_INVCLK
+ | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+ | ATMEL_LCDC_MEMOR_BIG),
+ .default_monspecs = &mimc200_default_monspecs,
+ .guard_time = 2,
+};
+
+struct eth_addr {
+ u8 addr[6];
+};
+static struct eth_addr __initdata hw_addr[2];
+static struct eth_platform_data __initdata eth_data[2];
+
+static struct spi_eeprom eeprom_25lc010 = {
+ .name = "25lc010",
+ .byte_len = 128,
+ .page_size = 16,
+ .flags = EE_ADDR1,
+};
+
+static struct spi_board_info spi0_board_info[] __initdata = {
+ {
+ .modalias = "rtc-ds1390",
+ .max_speed_hz = 4000000,
+ .chip_select = 2,
+ },
+ {
+ .modalias = "at25",
+ .max_speed_hz = 1000000,
+ .chip_select = 1,
+ .mode = SPI_MODE_3,
+ .platform_data = &eeprom_25lc010,
+ },
+};
+
+static struct mci_platform_data __initdata mci0_data = {
+ .slot[0] = {
+ .bus_width = 4,
+ .detect_pin = GPIO_PIN_PA(26),
+ .wp_pin = GPIO_PIN_PA(27),
+ },
+};
+
+/*
+ * The next two functions should go away as the boot loader is
+ * supposed to initialize the macb address registers with a valid
+ * ethernet address. But we need to keep it around for a while until
+ * we can be reasonably sure the boot loader does this.
+ *
+ * The phy_id is ignored as the driver will probe for it.
+ */
+static int __init parse_tag_ethernet(struct tag *tag)
+{
+ int i;
+
+ i = tag->u.ethernet.mac_index;
+ if (i < ARRAY_SIZE(hw_addr))
+ memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
+ sizeof(hw_addr[i].addr));
+
+ return 0;
+}
+__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
+
+static void __init set_hw_addr(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ const u8 *addr;
+ void __iomem *regs;
+ struct clk *pclk;
+
+ if (!res)
+ return;
+ if (pdev->id >= ARRAY_SIZE(hw_addr))
+ return;
+
+ addr = hw_addr[pdev->id].addr;
+ if (!is_valid_ether_addr(addr))
+ return;
+
+ /*
+ * Since this is board-specific code, we'll cheat and use the
+ * physical address directly as we happen to know that it's
+ * the same as the virtual address.
+ */
+ regs = (void __iomem __force *)res->start;
+ pclk = clk_get(&pdev->dev, "pclk");
+ if (!pclk)
+ return;
+
+ clk_enable(pclk);
+ __raw_writel((addr[3] << 24) | (addr[2] << 16)
+ | (addr[1] << 8) | addr[0], regs + 0x98);
+ __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
+ clk_disable(pclk);
+ clk_put(pclk);
+}
+
+void __init setup_board(void)
+{
+ at32_map_usart(0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */
+ at32_map_usart(1, 1); /* USART 1: /dev/ttyS1 (RS232) */
+ at32_map_usart(2, 2); /* USART 2: /dev/ttyS2 (RS485) */
+ at32_map_usart(3, 3); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */
+}
+
+static struct i2c_gpio_platform_data i2c_gpio_data = {
+ .sda_pin = GPIO_PIN_PA(6),
+ .scl_pin = GPIO_PIN_PA(7),
+ .sda_is_open_drain = 1,
+ .scl_is_open_drain = 1,
+ .udelay = 2, /* close to 100 kHz */
+};
+
+static struct platform_device i2c_gpio_device = {
+ .name = "i2c-gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &i2c_gpio_data,
+ },
+};
+
+static struct i2c_board_info __initdata i2c_info[] = {
+};
+
+static int __init mimc200_init(void)
+{
+ /*
+ * MIMC200 uses 16-bit SDRAM interface, so we don't need to
+ * reserve any pins for it.
+ */
+
+ at32_add_system_devices();
+
+ at32_add_device_usart(0);
+ at32_add_device_usart(1);
+ at32_add_device_usart(2);
+ at32_add_device_usart(3);
+
+ set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
+ set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
+
+ at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+ at32_add_device_mci(0, &mci0_data);
+ at32_add_device_usba(0, NULL);
+
+ at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP);
+ at32_select_gpio(i2c_gpio_data.sda_pin,
+ AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+ at32_select_gpio(i2c_gpio_data.scl_pin,
+ AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+ platform_device_register(&i2c_gpio_device);
+ i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
+
+ at32_add_device_lcdc(0, &mimc200_lcdc_data,
+ fbmem_start, fbmem_size, 1);
+
+ return 0;
+}
+postcore_initcall(mimc200_init);
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