diff options
Diffstat (limited to 'arch/avr32/boards/favr-32')
| -rw-r--r-- | arch/avr32/boards/favr-32/Kconfig | 22 | ||||
| -rw-r--r-- | arch/avr32/boards/favr-32/Makefile | 1 | ||||
| -rw-r--r-- | arch/avr32/boards/favr-32/flash.c | 98 | ||||
| -rw-r--r-- | arch/avr32/boards/favr-32/setup.c | 352 |
4 files changed, 473 insertions, 0 deletions
diff --git a/arch/avr32/boards/favr-32/Kconfig b/arch/avr32/boards/favr-32/Kconfig new file mode 100644 index 000000000000..2c83d1ddcaec --- /dev/null +++ b/arch/avr32/boards/favr-32/Kconfig @@ -0,0 +1,22 @@ +# Favr-32 customization + +if BOARD_FAVR_32 + +config BOARD_FAVR32_ABDAC_RATE + int "DAC target rate" + default 44100 + range 32000 50000 + help + Specify the target rate the internal DAC should try to match. This + will use PLL1 to generate a frequency as close as possible to this + rate. + + Must be within the range 32000 to 50000, which should be suitable to + generate most other frequencies in power of 2 steps. + + Ex: + 48000 will also suit 24000 and 12000 + 44100 will also suit 22050 and 11025 + 32000 will also suit 16000 and 8000 + +endif # BOARD_FAVR_32 diff --git a/arch/avr32/boards/favr-32/Makefile b/arch/avr32/boards/favr-32/Makefile new file mode 100644 index 000000000000..234f21508e4b --- /dev/null +++ b/arch/avr32/boards/favr-32/Makefile @@ -0,0 +1 @@ +obj-y += setup.o flash.o diff --git a/arch/avr32/boards/favr-32/flash.c b/arch/avr32/boards/favr-32/flash.c new file mode 100644 index 000000000000..5f139b7cb5f7 --- /dev/null +++ b/arch/avr32/boards/favr-32/flash.c @@ -0,0 +1,98 @@ +/* + * Favr-32 board-specific flash initialization + * + * Copyright (C) 2008 Atmel Corporation + * + * 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 <asm/arch/smc.h> + +static struct smc_timing flash_timing __initdata = { + .ncs_read_setup = 0, + .nrd_setup = 40, + .ncs_write_setup = 0, + .nwe_setup = 10, + + .ncs_read_pulse = 80, + .nrd_pulse = 40, + .ncs_write_pulse = 65, + .nwe_pulse = 55, + + .read_cycle = 120, + .write_cycle = 120, +}; + +static struct smc_config flash_config __initdata = { + .bus_width = 2, + .nrd_controlled = 1, + .nwe_controlled = 1, + .byte_write = 1, +}; + +static struct mtd_partition flash_parts[] = { + { + .name = "u-boot", + .offset = 0x00000000, + .size = 0x00020000, /* 128 KiB */ + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "root", + .offset = 0x00020000, + .size = 0x007d0000, + }, + { + .name = "env", + .offset = 0x007f0000, + .size = 0x00010000, + .mask_flags = MTD_WRITEABLE, + }, +}; + +static struct physmap_flash_data flash_data = { + .width = 2, + .nr_parts = ARRAY_SIZE(flash_parts), + .parts = flash_parts, +}; + +static struct resource flash_resource = { + .start = 0x00000000, + .end = 0x007fffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device flash_device = { + .name = "physmap-flash", + .id = 0, + .resource = &flash_resource, + .num_resources = 1, + .dev = { + .platform_data = &flash_data, + }, +}; + +/* This needs to be called after the SMC has been initialized */ +static int __init favr32_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 "Favr-32: failed to set NOR flash timing\n"); + return ret; + } + + platform_device_register(&flash_device); + + return 0; +} +device_initcall(favr32_flash_init); diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c new file mode 100644 index 000000000000..7538f3d2b9e0 --- /dev/null +++ b/arch/avr32/boards/favr-32/setup.c @@ -0,0 +1,352 @@ +/* + * Favr-32 board-specific setup code. + * + * Copyright (C) 2008 Atmel Corporation + * + * 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/clk.h> +#include <linux/etherdevice.h> +#include <linux/bootmem.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/types.h> +#include <linux/linkage.h> +#include <linux/gpio.h> +#include <linux/leds.h> +#include <linux/atmel-pwm-bl.h> +#include <linux/spi/spi.h> +#include <linux/spi/ads7846.h> + +#include <video/atmel_lcdc.h> + +#include <asm/setup.h> + +#include <asm/arch/at32ap700x.h> +#include <asm/arch/init.h> +#include <asm/arch/board.h> +#include <asm/arch/portmux.h> + +/* Oscillator frequencies. These are board-specific */ +unsigned long at32_board_osc_rates[3] = { + [0] = 32768, /* 32.768 kHz on RTC osc */ + [1] = 20000000, /* 20 MHz on osc0 */ + [2] = 12000000, /* 12 MHz on osc1 */ +}; + +/* Initialized by bootloader-specific startup code. */ +struct tag *bootloader_tags __initdata; + +struct eth_addr { + u8 addr[6]; +}; +static struct eth_addr __initdata hw_addr[1]; +static struct eth_platform_data __initdata eth_data[1] = { + { + .phy_mask = ~(1U << 1), + }, +}; + +static int ads7843_get_pendown_state(void) +{ + return !gpio_get_value(GPIO_PIN_PB(3)); +} + +static struct ads7846_platform_data ads7843_data = { + .model = 7843, + .get_pendown_state = ads7843_get_pendown_state, + .pressure_max = 255, + /* + * Values below are for debounce filtering, these can be experimented + * with further. + */ + .debounce_max = 20, + .debounce_rep = 4, + .debounce_tol = 5, +}; + +static struct spi_board_info __initdata spi1_board_info[] = { + { + /* ADS7843 touch controller */ + .modalias = "ads7846", + .max_speed_hz = 2000000, + .chip_select = 0, + .bus_num = 1, + .platform_data = &ads7843_data, + }, +}; + +static struct fb_videomode __initdata lb104v03_modes[] = { + { + .name = "640x480 @ 50", + .refresh = 50, + .xres = 640, .yres = 480, + .pixclock = KHZ2PICOS(25100), + + .left_margin = 90, .right_margin = 70, + .upper_margin = 30, .lower_margin = 15, + .hsync_len = 12, .vsync_len = 2, + + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, + }, +}; + +static struct fb_monspecs __initdata favr32_default_monspecs = { + .manufacturer = "LG", + .monitor = "LB104V03", + .modedb = lb104v03_modes, + .modedb_len = ARRAY_SIZE(lb104v03_modes), + .hfmin = 27273, + .hfmax = 31111, + .vfmin = 45, + .vfmax = 60, + .dclkmax = 28000000, +}; + +struct atmel_lcdfb_info __initdata favr32_lcdc_data = { + .default_bpp = 16, + .default_dmacon = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN, + .default_lcdcon2 = (ATMEL_LCDC_DISTYPE_TFT + | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE + | ATMEL_LCDC_MEMOR_BIG), + .default_monspecs = &favr32_default_monspecs, + .guard_time = 2, +}; + +static struct gpio_led favr32_leds[] = { + { + .name = "green", + .gpio = GPIO_PIN_PE(19), + .default_trigger = "heartbeat", + .active_low = 1, + }, + { + .name = "red", + .gpio = GPIO_PIN_PE(20), + .active_low = 1, + }, +}; + +static struct gpio_led_platform_data favr32_led_data = { + .num_leds = ARRAY_SIZE(favr32_leds), + .leds = favr32_leds, +}; + +static struct platform_device favr32_led_dev = { + .name = "leds-gpio", + .id = 0, + .dev = { + .platform_data = &favr32_led_data, + }, +}; + +/* + * 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 favr32_setup_leds(void) +{ + unsigned i; + + for (i = 0; i < ARRAY_SIZE(favr32_leds); i++) + at32_select_gpio(favr32_leds[i].gpio, AT32_GPIOF_OUTPUT); + + platform_device_register(&favr32_led_dev); +} + +static struct atmel_pwm_bl_platform_data atmel_pwm_bl_pdata = { + .pwm_channel = 2, + .pwm_frequency = 200000, + .pwm_compare_max = 345, + .pwm_duty_max = 345, + .pwm_duty_min = 90, + .pwm_active_low = 1, + .gpio_on = GPIO_PIN_PA(28), + .on_active_low = 0, +}; + +static struct platform_device atmel_pwm_bl_dev = { + .name = "atmel-pwm-bl", + .id = 0, + .dev = { + .platform_data = &atmel_pwm_bl_pdata, + }, +}; + +static void __init favr32_setup_atmel_pwm_bl(void) +{ + platform_device_register(&atmel_pwm_bl_dev); + at32_select_gpio(atmel_pwm_bl_pdata.gpio_on, 0); +} + +void __init setup_board(void) +{ + at32_map_usart(3, 0); /* USART 3 => /dev/ttyS0 */ + at32_setup_serial_console(0); +} + +static int __init set_abdac_rate(struct platform_device *pdev) +{ + int retval; + struct clk *osc1; + struct clk *pll1; + struct clk *abdac; + + if (pdev == NULL) + return -ENXIO; + + osc1 = clk_get(NULL, "osc1"); + if (IS_ERR(osc1)) { + retval = PTR_ERR(osc1); + goto out; + } + + pll1 = clk_get(NULL, "pll1"); + if (IS_ERR(pll1)) { + retval = PTR_ERR(pll1); + goto out_osc1; + } + + abdac = clk_get(&pdev->dev, "sample_clk"); + if (IS_ERR(abdac)) { + retval = PTR_ERR(abdac); + goto out_pll1; + } + + retval = clk_set_parent(pll1, osc1); + if (retval != 0) + goto out_abdac; + + /* + * Rate is 32000 to 50000 and ABDAC oversamples 256x. Multiply, in + * power of 2, to a value above 80 MHz. Power of 2 so it is possible + * for the generic clock to divide it down again and 80 MHz is the + * lowest frequency for the PLL. + */ + retval = clk_round_rate(pll1, + CONFIG_BOARD_FAVR32_ABDAC_RATE * 256 * 16); + if (retval < 0) + goto out_abdac; + + retval = clk_set_rate(pll1, retval); + if (retval != 0) + goto out_abdac; + + retval = clk_set_parent(abdac, pll1); + if (retval != 0) + goto out_abdac; + +out_abdac: + clk_put(abdac); +out_pll1: + clk_put(pll1); +out_osc1: + clk_put(osc1); +out: + return retval; +} + +static int __init favr32_init(void) +{ + /* + * Favr-32 uses 32-bit SDRAM interface. Reserve the SDRAM-specific + * pins so that nobody messes with them. + */ + at32_reserve_pin(GPIO_PIN_PE(0)); /* DATA[16] */ + at32_reserve_pin(GPIO_PIN_PE(1)); /* DATA[17] */ + at32_reserve_pin(GPIO_PIN_PE(2)); /* DATA[18] */ + at32_reserve_pin(GPIO_PIN_PE(3)); /* DATA[19] */ + at32_reserve_pin(GPIO_PIN_PE(4)); /* DATA[20] */ + at32_reserve_pin(GPIO_PIN_PE(5)); /* DATA[21] */ + at32_reserve_pin(GPIO_PIN_PE(6)); /* DATA[22] */ + at32_reserve_pin(GPIO_PIN_PE(7)); /* DATA[23] */ + at32_reserve_pin(GPIO_PIN_PE(8)); /* DATA[24] */ + at32_reserve_pin(GPIO_PIN_PE(9)); /* DATA[25] */ + at32_reserve_pin(GPIO_PIN_PE(10)); /* DATA[26] */ + at32_reserve_pin(GPIO_PIN_PE(11)); /* DATA[27] */ + at32_reserve_pin(GPIO_PIN_PE(12)); /* DATA[28] */ + at32_reserve_pin(GPIO_PIN_PE(13)); /* DATA[29] */ + at32_reserve_pin(GPIO_PIN_PE(14)); /* DATA[30] */ + at32_reserve_pin(GPIO_PIN_PE(15)); /* DATA[31] */ + at32_reserve_pin(GPIO_PIN_PE(26)); /* SDCS */ + + at32_select_gpio(GPIO_PIN_PB(3), 0); /* IRQ from ADS7843 */ + + at32_add_system_devices(); + + at32_add_device_usart(0); + + set_hw_addr(at32_add_device_eth(0, ð_data[0])); + + spi1_board_info[0].irq = gpio_to_irq(GPIO_PIN_PB(3)); + + set_abdac_rate(at32_add_device_abdac(0)); + + at32_add_device_pwm(1 << atmel_pwm_bl_pdata.pwm_channel); + at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); + at32_add_device_mci(0, NULL); + at32_add_device_usba(0, NULL); + at32_add_device_lcdc(0, &favr32_lcdc_data, fbmem_start, fbmem_size, 0); + + favr32_setup_leds(); + + favr32_setup_atmel_pwm_bl(); + + return 0; +} +postcore_initcall(favr32_init); |