diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/db1000.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1000.c | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c new file mode 100644 index 00000000000..1b81dbf6b80 --- /dev/null +++ b/arch/mips/alchemy/devboards/db1000.c @@ -0,0 +1,565 @@ +/* + * DBAu1000/1500/1100 board support + * + * Copyright 2000, 2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com> + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/dma-mapping.h> +#include <linux/gpio.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/leds.h> +#include <linux/mmc/host.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/spi/spi.h> +#include <linux/spi/spi_gpio.h> +#include <linux/spi/ads7846.h> +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-au1x00/au1000_dma.h> +#include <asm/mach-au1x00/au1100_mmc.h> +#include <asm/mach-db1x00/bcsr.h> +#include <asm/reboot.h> +#include <prom.h> +#include "platform.h" + +#define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT) + +struct pci_dev; + +static const char *board_type_str(void) +{ + switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) { + case BCSR_WHOAMI_DB1000: + return "DB1000"; + case BCSR_WHOAMI_DB1500: + return "DB1500"; + case BCSR_WHOAMI_DB1100: + return "DB1100"; + default: + return "(unknown)"; + } +} + +const char *get_system_type(void) +{ + return board_type_str(); +} + +void __init board_setup(void) +{ + /* initialize board register space */ + bcsr_init(DB1000_BCSR_PHYS_ADDR, + DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS); + + printk(KERN_INFO "AMD Alchemy %s Board\n", board_type_str()); +} + + +static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) +{ + if ((slot < 12) || (slot > 13) || pin == 0) + return -1; + if (slot == 12) + return (pin == 1) ? AU1500_PCI_INTA : 0xff; + if (slot == 13) { + switch (pin) { + case 1: return AU1500_PCI_INTA; + case 2: return AU1500_PCI_INTB; + case 3: return AU1500_PCI_INTC; + case 4: return AU1500_PCI_INTD; + } + } + return -1; +} + +static struct resource alchemy_pci_host_res[] = { + [0] = { + .start = AU1500_PCI_PHYS_ADDR, + .end = AU1500_PCI_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct alchemy_pci_platdata db1500_pci_pd = { + .board_map_irq = db1500_map_pci_irq, +}; + +static struct platform_device db1500_pci_host_dev = { + .dev.platform_data = &db1500_pci_pd, + .name = "alchemy-pci", + .id = 0, + .num_resources = ARRAY_SIZE(alchemy_pci_host_res), + .resource = alchemy_pci_host_res, +}; + +static int __init db1500_pci_init(void) +{ + if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1500) + return platform_device_register(&db1500_pci_host_dev); + return 0; +} +/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ +arch_initcall(db1500_pci_init); + + +static struct resource au1100_lcd_resources[] = { + [0] = { + .start = AU1100_LCD_PHYS_ADDR, + .end = AU1100_LCD_PHYS_ADDR + 0x800 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1100_LCD_INT, + .end = AU1100_LCD_INT, + .flags = IORESOURCE_IRQ, + } +}; + +static u64 au1100_lcd_dmamask = DMA_BIT_MASK(32); + +static struct platform_device au1100_lcd_device = { + .name = "au1100-lcd", + .id = 0, + .dev = { + .dma_mask = &au1100_lcd_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .num_resources = ARRAY_SIZE(au1100_lcd_resources), + .resource = au1100_lcd_resources, +}; + +static struct resource alchemy_ac97c_res[] = { + [0] = { + .start = AU1000_AC97_PHYS_ADDR, + .end = AU1000_AC97_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = DMA_ID_AC97C_TX, + .end = DMA_ID_AC97C_TX, + .flags = IORESOURCE_DMA, + }, + [2] = { + .start = DMA_ID_AC97C_RX, + .end = DMA_ID_AC97C_RX, + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device alchemy_ac97c_dev = { + .name = "alchemy-ac97c", + .id = -1, + .resource = alchemy_ac97c_res, + .num_resources = ARRAY_SIZE(alchemy_ac97c_res), +}; + +static struct platform_device alchemy_ac97c_dma_dev = { + .name = "alchemy-pcm-dma", + .id = 0, +}; + +static struct platform_device db1x00_codec_dev = { + .name = "ac97-codec", + .id = -1, +}; + +static struct platform_device db1x00_audio_dev = { + .name = "db1000-audio", +}; + +/******************************************************************************/ + +static irqreturn_t db1100_mmc_cd(int irq, void *ptr) +{ + void (*mmc_cd)(struct mmc_host *, unsigned long); + /* link against CONFIG_MMC=m */ + mmc_cd = symbol_get(mmc_detect_change); + mmc_cd(ptr, msecs_to_jiffies(500)); + symbol_put(mmc_detect_change); + + return IRQ_HANDLED; +} + +static int db1100_mmc_cd_setup(void *mmc_host, int en) +{ + int ret = 0; + + if (en) { + irq_set_irq_type(AU1100_GPIO19_INT, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(AU1100_GPIO19_INT, db1100_mmc_cd, 0, + "sd0_cd", mmc_host); + } else + free_irq(AU1100_GPIO19_INT, mmc_host); + return ret; +} + +static int db1100_mmc1_cd_setup(void *mmc_host, int en) +{ + int ret = 0; + + if (en) { + irq_set_irq_type(AU1100_GPIO20_INT, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(AU1100_GPIO20_INT, db1100_mmc_cd, 0, + "sd1_cd", mmc_host); + } else + free_irq(AU1100_GPIO20_INT, mmc_host); + return ret; +} + +static int db1100_mmc_card_readonly(void *mmc_host) +{ + /* testing suggests that this bit is inverted */ + return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1; +} + +static int db1100_mmc_card_inserted(void *mmc_host) +{ + return !alchemy_gpio_get_value(19); +} + +static void db1100_mmc_set_power(void *mmc_host, int state) +{ + if (state) { + bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR); + msleep(400); /* stabilization time */ + } else + bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0); +} + +static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b) +{ + if (b != LED_OFF) + bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0); + else + bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0); +} + +static struct led_classdev db1100_mmc_led = { + .brightness_set = db1100_mmcled_set, +}; + +static int db1100_mmc1_card_readonly(void *mmc_host) +{ + return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0; +} + +static int db1100_mmc1_card_inserted(void *mmc_host) +{ + return !alchemy_gpio_get_value(20); +} + +static void db1100_mmc1_set_power(void *mmc_host, int state) +{ + if (state) { + bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR); + msleep(400); /* stabilization time */ + } else + bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0); +} + +static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b) +{ + if (b != LED_OFF) + bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0); + else + bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1); +} + +static struct led_classdev db1100_mmc1_led = { + .brightness_set = db1100_mmc1led_set, +}; + +static struct au1xmmc_platform_data db1100_mmc_platdata[2] = { + [0] = { + .cd_setup = db1100_mmc_cd_setup, + .set_power = db1100_mmc_set_power, + .card_inserted = db1100_mmc_card_inserted, + .card_readonly = db1100_mmc_card_readonly, + .led = &db1100_mmc_led, + }, + [1] = { + .cd_setup = db1100_mmc1_cd_setup, + .set_power = db1100_mmc1_set_power, + .card_inserted = db1100_mmc1_card_inserted, + .card_readonly = db1100_mmc1_card_readonly, + .led = &db1100_mmc1_led, + }, +}; + +static struct resource au1100_mmc0_resources[] = { + [0] = { + .start = AU1100_SD0_PHYS_ADDR, + .end = AU1100_SD0_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1100_SD_INT, + .end = AU1100_SD_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = DMA_ID_SD0_TX, + .end = DMA_ID_SD0_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = DMA_ID_SD0_RX, + .end = DMA_ID_SD0_RX, + .flags = IORESOURCE_DMA, + } +}; + +static u64 au1xxx_mmc_dmamask = DMA_BIT_MASK(32); + +static struct platform_device db1100_mmc0_dev = { + .name = "au1xxx-mmc", + .id = 0, + .dev = { + .dma_mask = &au1xxx_mmc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1100_mmc_platdata[0], + }, + .num_resources = ARRAY_SIZE(au1100_mmc0_resources), + .resource = au1100_mmc0_resources, +}; + +static struct resource au1100_mmc1_res[] = { + [0] = { + .start = AU1100_SD1_PHYS_ADDR, + .end = AU1100_SD1_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1100_SD_INT, + .end = AU1100_SD_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = DMA_ID_SD1_TX, + .end = DMA_ID_SD1_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = DMA_ID_SD1_RX, + .end = DMA_ID_SD1_RX, + .flags = IORESOURCE_DMA, + } +}; + +static struct platform_device db1100_mmc1_dev = { + .name = "au1xxx-mmc", + .id = 1, + .dev = { + .dma_mask = &au1xxx_mmc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1100_mmc_platdata[1], + }, + .num_resources = ARRAY_SIZE(au1100_mmc1_res), + .resource = au1100_mmc1_res, +}; + +/******************************************************************************/ + +static void db1000_irda_set_phy_mode(int mode) +{ + unsigned short mask = BCSR_RESETS_IRDA_MODE_MASK | BCSR_RESETS_FIR_SEL; + + switch (mode) { + case AU1000_IRDA_PHY_MODE_OFF: + bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_OFF); + break; + case AU1000_IRDA_PHY_MODE_SIR: + bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_FULL); + break; + case AU1000_IRDA_PHY_MODE_FIR: + bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_FULL | + BCSR_RESETS_FIR_SEL); + break; + } +} + +static struct au1k_irda_platform_data db1000_irda_platdata = { + .set_phy_mode = db1000_irda_set_phy_mode, +}; + +static struct resource au1000_irda_res[] = { + [0] = { + .start = AU1000_IRDA_PHYS_ADDR, + .end = AU1000_IRDA_PHYS_ADDR + 0x0fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1000_IRDA_TX_INT, + .end = AU1000_IRDA_TX_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = AU1000_IRDA_RX_INT, + .end = AU1000_IRDA_RX_INT, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device db1000_irda_dev = { + .name = "au1000-irda", + .id = -1, + .dev = { + .platform_data = &db1000_irda_platdata, + }, + .resource = au1000_irda_res, + .num_resources = ARRAY_SIZE(au1000_irda_res), +}; + +/******************************************************************************/ + +static struct ads7846_platform_data db1100_touch_pd = { + .model = 7846, + .vref_mv = 3300, + .gpio_pendown = 21, +}; + +static struct spi_gpio_platform_data db1100_spictl_pd = { + .sck = 209, + .mosi = 208, + .miso = 207, + .num_chipselect = 1, +}; + +static struct spi_board_info db1100_spi_info[] __initdata = { + [0] = { + .modalias = "ads7846", + .max_speed_hz = 3250000, + .bus_num = 0, + .chip_select = 0, + .mode = 0, + .irq = AU1100_GPIO21_INT, + .platform_data = &db1100_touch_pd, + .controller_data = (void *)210, /* for spi_gpio: CS# GPIO210 */ + }, +}; + +static struct platform_device db1100_spi_dev = { + .name = "spi_gpio", + .id = 0, + .dev = { + .platform_data = &db1100_spictl_pd, + }, +}; + + +static struct platform_device *db1x00_devs[] = { + &db1x00_codec_dev, + &alchemy_ac97c_dma_dev, + &alchemy_ac97c_dev, + &db1x00_audio_dev, +}; + +static struct platform_device *db1000_devs[] = { + &db1000_irda_dev, +}; + +static struct platform_device *db1100_devs[] = { + &au1100_lcd_device, + &db1100_mmc0_dev, + &db1100_mmc1_dev, + &db1000_irda_dev, + &db1100_spi_dev, +}; + +static int __init db1000_dev_init(void) +{ + int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); + int c0, c1, d0, d1, s0, s1; + unsigned long pfc; + + if (board == BCSR_WHOAMI_DB1500) { + c0 = AU1500_GPIO2_INT; + c1 = AU1500_GPIO5_INT; + d0 = AU1500_GPIO0_INT; + d1 = AU1500_GPIO3_INT; + s0 = AU1500_GPIO1_INT; + s1 = AU1500_GPIO4_INT; + } else if (board == BCSR_WHOAMI_DB1100) { + c0 = AU1100_GPIO2_INT; + c1 = AU1100_GPIO5_INT; + d0 = AU1100_GPIO0_INT; + d1 = AU1100_GPIO3_INT; + s0 = AU1100_GPIO1_INT; + s1 = AU1100_GPIO4_INT; + + gpio_direction_input(19); /* sd0 cd# */ + gpio_direction_input(20); /* sd1 cd# */ + gpio_direction_input(21); /* touch pendown# */ + gpio_direction_input(207); /* SPI MISO */ + gpio_direction_output(208, 0); /* SPI MOSI */ + gpio_direction_output(209, 1); /* SPI SCK */ + gpio_direction_output(210, 1); /* SPI CS# */ + + /* spi_gpio on SSI0 pins */ + pfc = __raw_readl((void __iomem *)SYS_PINFUNC); + pfc |= (1 << 0); /* SSI0 pins as GPIOs */ + __raw_writel(pfc, (void __iomem *)SYS_PINFUNC); + wmb(); + + spi_register_board_info(db1100_spi_info, + ARRAY_SIZE(db1100_spi_info)); + + platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); + } else if (board == BCSR_WHOAMI_DB1000) { + c0 = AU1000_GPIO2_INT; + c1 = AU1000_GPIO5_INT; + d0 = AU1000_GPIO0_INT; + d1 = AU1000_GPIO3_INT; + s0 = AU1000_GPIO1_INT; + s1 = AU1000_GPIO4_INT; + platform_add_devices(db1000_devs, ARRAY_SIZE(db1000_devs)); + } else + return 0; /* unknown board, no further dev setup to do */ + + irq_set_irq_type(d0, IRQ_TYPE_EDGE_BOTH); + irq_set_irq_type(d1, IRQ_TYPE_EDGE_BOTH); + irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW); + + db1x_register_pcmcia_socket( + AU1000_PCMCIA_ATTR_PHYS_ADDR, + AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, + AU1000_PCMCIA_MEM_PHYS_ADDR, + AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, + AU1000_PCMCIA_IO_PHYS_ADDR, + AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1, + c0, d0, /*s0*/0, 0, 0); + + db1x_register_pcmcia_socket( + AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000, + AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1, + AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000, + AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1, + AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000, + AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1, + c1, d1, /*s1*/0, 0, 1); + + platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs)); + db1x_register_norflash(32 << 20, 4 /* 32bit */, F_SWAPPED); + return 0; +} +device_initcall(db1000_dev_init); |