diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/db1550.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1550.c | 498 |
1 files changed, 498 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c new file mode 100644 index 00000000000..6815d0783cd --- /dev/null +++ b/arch/mips/alchemy/devboards/db1550.c @@ -0,0 +1,498 @@ +/* + * Alchemy Db1550 board support + * + * (c) 2011 Manuel Lauss <manuel.lauss@googlemail.com> + */ + +#include <linux/dma-mapping.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/interrupt.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/spi/spi.h> +#include <linux/spi/flash.h> +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-au1x00/au1xxx_eth.h> +#include <asm/mach-au1x00/au1xxx_dbdma.h> +#include <asm/mach-au1x00/au1xxx_psc.h> +#include <asm/mach-au1x00/au1550_spi.h> +#include <asm/mach-db1x00/bcsr.h> +#include <prom.h> +#include "platform.h" + + +const char *get_system_type(void) +{ + return "DB1550"; +} + +static void __init db1550_hw_setup(void) +{ + void __iomem *base; + + alchemy_gpio_direction_output(203, 0); /* red led on */ + + /* complete SPI setup: link psc0_intclk to a 48MHz source, + * and assign GPIO16 to PSC0_SYNC1 (SPI cs# line) + */ + base = (void __iomem *)SYS_CLKSRC; + __raw_writel(__raw_readl(base) | 0x000001e0, base); + base = (void __iomem *)SYS_PINFUNC; + __raw_writel(__raw_readl(base) | 1, base); + wmb(); + + /* reset the AC97 codec now, the reset time in the psc-ac97 driver + * is apparently too short although it's ridiculous as it is. + */ + base = (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR); + __raw_writel(PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE, + base + PSC_SEL_OFFSET); + __raw_writel(PSC_CTRL_DISABLE, base + PSC_CTRL_OFFSET); + wmb(); + __raw_writel(PSC_AC97RST_RST, base + PSC_AC97RST_OFFSET); + wmb(); + + alchemy_gpio_direction_output(202, 0); /* green led on */ +} + +void __init board_setup(void) +{ + unsigned short whoami; + + bcsr_init(DB1550_BCSR_PHYS_ADDR, + DB1550_BCSR_PHYS_ADDR + DB1550_BCSR_HEXLED_OFS); + + whoami = bcsr_read(BCSR_WHOAMI); + printk(KERN_INFO "Alchemy/AMD DB1550 Board, CPLD Rev %d" + " Board-ID %d Daughtercard ID %d\n", + (whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf); + + db1550_hw_setup(); +} + +/*****************************************************************************/ + +static struct mtd_partition db1550_spiflash_parts[] = { + { + .name = "spi_flash", + .offset = 0, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct flash_platform_data db1550_spiflash_data = { + .name = "s25fl010", + .parts = db1550_spiflash_parts, + .nr_parts = ARRAY_SIZE(db1550_spiflash_parts), + .type = "m25p10", +}; + +static struct spi_board_info db1550_spi_devs[] __initdata = { + { + /* TI TMP121AIDBVR temp sensor */ + .modalias = "tmp121", + .max_speed_hz = 2400000, + .bus_num = 0, + .chip_select = 0, + .mode = SPI_MODE_0, + }, + { + /* Spansion S25FL001D0FMA SPI flash */ + .modalias = "m25p80", + .max_speed_hz = 2400000, + .bus_num = 0, + .chip_select = 1, + .mode = SPI_MODE_0, + .platform_data = &db1550_spiflash_data, + }, +}; + +static struct i2c_board_info db1550_i2c_devs[] __initdata = { + { I2C_BOARD_INFO("24c04", 0x52),}, /* AT24C04-10 I2C eeprom */ + { I2C_BOARD_INFO("ne1619", 0x2d),}, /* adm1025-compat hwmon */ + { I2C_BOARD_INFO("wm8731", 0x1b),}, /* I2S audio codec WM8731 */ +}; + +/**********************************************************************/ + +static void au1550_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + unsigned long ioaddr = (unsigned long)this->IO_ADDR_W; + + ioaddr &= 0xffffff00; + + if (ctrl & NAND_CLE) { + ioaddr += MEM_STNAND_CMD; + } else if (ctrl & NAND_ALE) { + ioaddr += MEM_STNAND_ADDR; + } else { + /* assume we want to r/w real data by default */ + ioaddr += MEM_STNAND_DATA; + } + this->IO_ADDR_R = this->IO_ADDR_W = (void __iomem *)ioaddr; + if (cmd != NAND_CMD_NONE) { + __raw_writeb(cmd, this->IO_ADDR_W); + wmb(); + } +} + +static int au1550_nand_device_ready(struct mtd_info *mtd) +{ + return __raw_readl((void __iomem *)MEM_STSTAT) & 1; +} + +static const char *db1550_part_probes[] = { "cmdlinepart", NULL }; + +static struct mtd_partition db1550_nand_parts[] = { + { + .name = "NAND FS 0", + .offset = 0, + .size = 8 * 1024 * 1024, + }, + { + .name = "NAND FS 1", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL + }, +}; + +struct platform_nand_data db1550_nand_platdata = { + .chip = { + .nr_chips = 1, + .chip_offset = 0, + .nr_partitions = ARRAY_SIZE(db1550_nand_parts), + .partitions = db1550_nand_parts, + .chip_delay = 20, + .part_probe_types = db1550_part_probes, + }, + .ctrl = { + .dev_ready = au1550_nand_device_ready, + .cmd_ctrl = au1550_nand_cmd_ctrl, + }, +}; + +static struct resource db1550_nand_res[] = { + [0] = { + .start = 0x20000000, + .end = 0x200000ff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device db1550_nand_dev = { + .name = "gen_nand", + .num_resources = ARRAY_SIZE(db1550_nand_res), + .resource = db1550_nand_res, + .id = -1, + .dev = { + .platform_data = &db1550_nand_platdata, + } +}; + +/**********************************************************************/ + +static struct resource au1550_psc0_res[] = { + [0] = { + .start = AU1550_PSC0_PHYS_ADDR, + .end = AU1550_PSC0_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1550_PSC0_INT, + .end = AU1550_PSC0_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = AU1550_DSCR_CMD0_PSC0_TX, + .end = AU1550_DSCR_CMD0_PSC0_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = AU1550_DSCR_CMD0_PSC0_RX, + .end = AU1550_DSCR_CMD0_PSC0_RX, + .flags = IORESOURCE_DMA, + }, +}; + +static void db1550_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol) +{ + if (cs) + bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SPISEL); + else + bcsr_mod(BCSR_BOARD, BCSR_BOARD_SPISEL, 0); +} + +static struct au1550_spi_info db1550_spi_platdata = { + .mainclk_hz = 48000000, /* PSC0 clock: max. 2.4MHz SPI clk */ + .num_chipselect = 2, + .activate_cs = db1550_spi_cs_en, +}; + +static u64 spi_dmamask = DMA_BIT_MASK(32); + +static struct platform_device db1550_spi_dev = { + .dev = { + .dma_mask = &spi_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1550_spi_platdata, + }, + .name = "au1550-spi", + .id = 0, /* bus number */ + .num_resources = ARRAY_SIZE(au1550_psc0_res), + .resource = au1550_psc0_res, +}; + +/**********************************************************************/ + +static struct resource au1550_psc1_res[] = { + [0] = { + .start = AU1550_PSC1_PHYS_ADDR, + .end = AU1550_PSC1_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1550_PSC1_INT, + .end = AU1550_PSC1_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = AU1550_DSCR_CMD0_PSC1_TX, + .end = AU1550_DSCR_CMD0_PSC1_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = AU1550_DSCR_CMD0_PSC1_RX, + .end = AU1550_DSCR_CMD0_PSC1_RX, + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device db1550_ac97_dev = { + .name = "au1xpsc_ac97", + .id = 1, /* PSC ID */ + .num_resources = ARRAY_SIZE(au1550_psc1_res), + .resource = au1550_psc1_res, +}; + + +static struct resource au1550_psc2_res[] = { + [0] = { + .start = AU1550_PSC2_PHYS_ADDR, + .end = AU1550_PSC2_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1550_PSC2_INT, + .end = AU1550_PSC2_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = AU1550_DSCR_CMD0_PSC2_TX, + .end = AU1550_DSCR_CMD0_PSC2_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = AU1550_DSCR_CMD0_PSC2_RX, + .end = AU1550_DSCR_CMD0_PSC2_RX, + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device db1550_i2c_dev = { + .name = "au1xpsc_smbus", + .id = 0, /* bus number */ + .num_resources = ARRAY_SIZE(au1550_psc2_res), + .resource = au1550_psc2_res, +}; + +/**********************************************************************/ + +static struct resource au1550_psc3_res[] = { + [0] = { + .start = AU1550_PSC3_PHYS_ADDR, + .end = AU1550_PSC3_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1550_PSC3_INT, + .end = AU1550_PSC3_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = AU1550_DSCR_CMD0_PSC3_TX, + .end = AU1550_DSCR_CMD0_PSC3_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = AU1550_DSCR_CMD0_PSC3_RX, + .end = AU1550_DSCR_CMD0_PSC3_RX, + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device db1550_i2s_dev = { + .name = "au1xpsc_i2s", + .id = 3, /* PSC ID */ + .num_resources = ARRAY_SIZE(au1550_psc3_res), + .resource = au1550_psc3_res, +}; + +/**********************************************************************/ + +static struct platform_device db1550_stac_dev = { + .name = "ac97-codec", + .id = 1, /* on PSC1 */ +}; + +static struct platform_device db1550_ac97dma_dev = { + .name = "au1xpsc-pcm", + .id = 1, /* on PSC3 */ +}; + +static struct platform_device db1550_i2sdma_dev = { + .name = "au1xpsc-pcm", + .id = 3, /* on PSC3 */ +}; + +static struct platform_device db1550_sndac97_dev = { + .name = "db1550-ac97", +}; + +static struct platform_device db1550_sndi2s_dev = { + .name = "db1550-i2s", +}; + +/**********************************************************************/ + +static int db1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) +{ + if ((slot < 11) || (slot > 13) || pin == 0) + return -1; + if (slot == 11) + return (pin == 1) ? AU1550_PCI_INTC : 0xff; + if (slot == 12) { + switch (pin) { + case 1: return AU1550_PCI_INTB; + case 2: return AU1550_PCI_INTC; + case 3: return AU1550_PCI_INTD; + case 4: return AU1550_PCI_INTA; + } + } + if (slot == 13) { + switch (pin) { + case 1: return AU1550_PCI_INTA; + case 2: return AU1550_PCI_INTB; + case 3: return AU1550_PCI_INTC; + case 4: return AU1550_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 db1550_pci_pd = { + .board_map_irq = db1550_map_pci_irq, +}; + +static struct platform_device db1550_pci_host_dev = { + .dev.platform_data = &db1550_pci_pd, + .name = "alchemy-pci", + .id = 0, + .num_resources = ARRAY_SIZE(alchemy_pci_host_res), + .resource = alchemy_pci_host_res, +}; + +/**********************************************************************/ + +static struct platform_device *db1550_devs[] __initdata = { + &db1550_nand_dev, + &db1550_i2c_dev, + &db1550_ac97_dev, + &db1550_spi_dev, + &db1550_i2s_dev, + &db1550_stac_dev, + &db1550_ac97dma_dev, + &db1550_i2sdma_dev, + &db1550_sndac97_dev, + &db1550_sndi2s_dev, +}; + +/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ +static int __init db1550_pci_init(void) +{ + return platform_device_register(&db1550_pci_host_dev); +} +arch_initcall(db1550_pci_init); + +static int __init db1550_dev_init(void) +{ + int swapped; + + irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_EDGE_BOTH); /* CD0# */ + irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_EDGE_BOTH); /* CD1# */ + irq_set_irq_type(AU1550_GPIO3_INT, IRQ_TYPE_LEVEL_LOW); /* CARD0# */ + irq_set_irq_type(AU1550_GPIO5_INT, IRQ_TYPE_LEVEL_LOW); /* CARD1# */ + irq_set_irq_type(AU1550_GPIO21_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG0# */ + irq_set_irq_type(AU1550_GPIO22_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG1# */ + + i2c_register_board_info(0, db1550_i2c_devs, + ARRAY_SIZE(db1550_i2c_devs)); + spi_register_board_info(db1550_spi_devs, + ARRAY_SIZE(db1550_i2c_devs)); + + /* Audio PSC clock is supplied by codecs (PSC1, 3) FIXME: platdata!! */ + __raw_writel(PSC_SEL_CLK_SERCLK, + (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET); + wmb(); + __raw_writel(PSC_SEL_CLK_SERCLK, + (void __iomem *)KSEG1ADDR(AU1550_PSC3_PHYS_ADDR) + PSC_SEL_OFFSET); + wmb(); + /* SPI/I2C use internally supplied 50MHz source */ + __raw_writel(PSC_SEL_CLK_INTCLK, + (void __iomem *)KSEG1ADDR(AU1550_PSC0_PHYS_ADDR) + PSC_SEL_OFFSET); + wmb(); + __raw_writel(PSC_SEL_CLK_INTCLK, + (void __iomem *)KSEG1ADDR(AU1550_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET); + wmb(); + + 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, + AU1550_GPIO3_INT, AU1550_GPIO0_INT, + /*AU1550_GPIO21_INT*/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, + AU1550_GPIO5_INT, AU1550_GPIO1_INT, + /*AU1550_GPIO22_INT*/0, 0, 1); + + swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT; + db1x_register_norflash(128 << 20, 4, swapped); + + return platform_add_devices(db1550_devs, ARRAY_SIZE(db1550_devs)); +} +device_initcall(db1550_dev_init); |