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-rw-r--r--arch/mips/alchemy/devboards/db1200/platform.c510
1 files changed, 510 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/db1200/platform.c b/arch/mips/alchemy/devboards/db1200/platform.c
new file mode 100644
index 000000000000..5a6ef8deda10
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+++ b/arch/mips/alchemy/devboards/db1200/platform.c
@@ -0,0 +1,510 @@
+/*
+ * DBAu1200 board platform device registration
+ *
+ * Copyright (C) 2008-2009 Manuel Lauss
+ *
+ * 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/i2c.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+#include <linux/mmc/host.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+#include <linux/smc91x.h>
+
+#include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1550_spi.h>
+#include <asm/mach-db1x00/bcsr.h>
+#include <asm/mach-db1x00/db1200.h>
+
+#include "../platform.h"
+
+static struct mtd_partition db1200_spiflash_parts[] = {
+ {
+ .name = "DB1200 SPI flash",
+ .offset = 0,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct flash_platform_data db1200_spiflash_data = {
+ .name = "s25fl001",
+ .parts = db1200_spiflash_parts,
+ .nr_parts = ARRAY_SIZE(db1200_spiflash_parts),
+ .type = "m25p10",
+};
+
+static struct spi_board_info db1200_spi_devs[] __initdata = {
+ {
+ /* TI TMP121AIDBVR temp sensor */
+ .modalias = "tmp121",
+ .max_speed_hz = 2000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = 0,
+ },
+ {
+ /* Spansion S25FL001D0FMA SPI flash */
+ .modalias = "m25p80",
+ .max_speed_hz = 50000000,
+ .bus_num = 0,
+ .chip_select = 1,
+ .mode = 0,
+ .platform_data = &db1200_spiflash_data,
+ },
+};
+
+static struct i2c_board_info db1200_i2c_devs[] __initdata = {
+ {
+ /* AT24C04-10 I2C eeprom */
+ I2C_BOARD_INFO("24c04", 0x52),
+ },
+ {
+ /* Philips NE1619 temp/voltage sensor (adm1025 drv) */
+ I2C_BOARD_INFO("ne1619", 0x2d),
+ },
+ {
+ /* I2S audio codec WM8731 */
+ I2C_BOARD_INFO("wm8731", 0x1b),
+ },
+};
+
+/**********************************************************************/
+
+static void au1200_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 au1200_nand_device_ready(struct mtd_info *mtd)
+{
+ return __raw_readl((void __iomem *)MEM_STSTAT) & 1;
+}
+
+static const char *db1200_part_probes[] = { "cmdlinepart", NULL };
+
+static struct mtd_partition db1200_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 db1200_nand_platdata = {
+ .chip = {
+ .nr_chips = 1,
+ .chip_offset = 0,
+ .nr_partitions = ARRAY_SIZE(db1200_nand_parts),
+ .partitions = db1200_nand_parts,
+ .chip_delay = 20,
+ .part_probe_types = db1200_part_probes,
+ },
+ .ctrl = {
+ .dev_ready = au1200_nand_device_ready,
+ .cmd_ctrl = au1200_nand_cmd_ctrl,
+ },
+};
+
+static struct resource db1200_nand_res[] = {
+ [0] = {
+ .start = DB1200_NAND_PHYS_ADDR,
+ .end = DB1200_NAND_PHYS_ADDR + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device db1200_nand_dev = {
+ .name = "gen_nand",
+ .num_resources = ARRAY_SIZE(db1200_nand_res),
+ .resource = db1200_nand_res,
+ .id = -1,
+ .dev = {
+ .platform_data = &db1200_nand_platdata,
+ }
+};
+
+/**********************************************************************/
+
+static struct smc91x_platdata db1200_eth_data = {
+ .flags = SMC91X_NOWAIT | SMC91X_USE_16BIT,
+ .leda = RPC_LED_100_10,
+ .ledb = RPC_LED_TX_RX,
+};
+
+static struct resource db1200_eth_res[] = {
+ [0] = {
+ .start = DB1200_ETH_PHYS_ADDR,
+ .end = DB1200_ETH_PHYS_ADDR + 0xf,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = DB1200_ETH_INT,
+ .end = DB1200_ETH_INT,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device db1200_eth_dev = {
+ .dev = {
+ .platform_data = &db1200_eth_data,
+ },
+ .name = "smc91x",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(db1200_eth_res),
+ .resource = db1200_eth_res,
+};
+
+/**********************************************************************/
+
+static struct resource db1200_ide_res[] = {
+ [0] = {
+ .start = DB1200_IDE_PHYS_ADDR,
+ .end = DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = DB1200_IDE_INT,
+ .end = DB1200_IDE_INT,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static u64 ide_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device db1200_ide_dev = {
+ .name = "au1200-ide",
+ .id = 0,
+ .dev = {
+ .dma_mask = &ide_dmamask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ },
+ .num_resources = ARRAY_SIZE(db1200_ide_res),
+ .resource = db1200_ide_res,
+};
+
+/**********************************************************************/
+
+static struct platform_device db1200_rtc_dev = {
+ .name = "rtc-au1xxx",
+ .id = -1,
+};
+
+/**********************************************************************/
+
+/* SD carddetects: they're supposed to be edge-triggered, but ack
+ * doesn't seem to work (CPLD Rev 2). Instead, the screaming one
+ * is disabled and its counterpart enabled. The 500ms timeout is
+ * because the carddetect isn't debounced in hardware.
+ */
+static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
+{
+ void(*mmc_cd)(struct mmc_host *, unsigned long);
+
+ if (irq == DB1200_SD0_INSERT_INT) {
+ disable_irq_nosync(DB1200_SD0_INSERT_INT);
+ enable_irq(DB1200_SD0_EJECT_INT);
+ } else {
+ disable_irq_nosync(DB1200_SD0_EJECT_INT);
+ enable_irq(DB1200_SD0_INSERT_INT);
+ }
+
+ /* link against CONFIG_MMC=m */
+ mmc_cd = symbol_get(mmc_detect_change);
+ if (mmc_cd) {
+ mmc_cd(ptr, msecs_to_jiffies(500));
+ symbol_put(mmc_detect_change);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int db1200_mmc_cd_setup(void *mmc_host, int en)
+{
+ int ret;
+
+ if (en) {
+ ret = request_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd,
+ IRQF_DISABLED, "sd_insert", mmc_host);
+ if (ret)
+ goto out;
+
+ ret = request_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd,
+ IRQF_DISABLED, "sd_eject", mmc_host);
+ if (ret) {
+ free_irq(DB1200_SD0_INSERT_INT, mmc_host);
+ goto out;
+ }
+
+ if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT)
+ enable_irq(DB1200_SD0_EJECT_INT);
+ else
+ enable_irq(DB1200_SD0_INSERT_INT);
+
+ } else {
+ free_irq(DB1200_SD0_INSERT_INT, mmc_host);
+ free_irq(DB1200_SD0_EJECT_INT, mmc_host);
+ }
+ ret = 0;
+out:
+ return ret;
+}
+
+static void db1200_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 int db1200_mmc_card_readonly(void *mmc_host)
+{
+ return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 1 : 0;
+}
+
+static int db1200_mmc_card_inserted(void *mmc_host)
+{
+ return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT) ? 1 : 0;
+}
+
+static void db1200_mmcled_set(struct led_classdev *led,
+ enum led_brightness brightness)
+{
+ if (brightness != LED_OFF)
+ bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
+ else
+ bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
+}
+
+static struct led_classdev db1200_mmc_led = {
+ .brightness_set = db1200_mmcled_set,
+};
+
+/* needed by arch/mips/alchemy/common/platform.c */
+struct au1xmmc_platform_data au1xmmc_platdata[] = {
+ [0] = {
+ .cd_setup = db1200_mmc_cd_setup,
+ .set_power = db1200_mmc_set_power,
+ .card_inserted = db1200_mmc_card_inserted,
+ .card_readonly = db1200_mmc_card_readonly,
+ .led = &db1200_mmc_led,
+ },
+};
+
+/**********************************************************************/
+
+static struct resource au1200_psc0_res[] = {
+ [0] = {
+ .start = PSC0_PHYS_ADDR,
+ .end = PSC0_PHYS_ADDR + 0x000fffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AU1200_PSC0_INT,
+ .end = AU1200_PSC0_INT,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = DSCR_CMD0_PSC0_TX,
+ .end = DSCR_CMD0_PSC0_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .start = DSCR_CMD0_PSC0_RX,
+ .end = DSCR_CMD0_PSC0_RX,
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+static struct platform_device db1200_i2c_dev = {
+ .name = "au1xpsc_smbus",
+ .id = 0, /* bus number */
+ .num_resources = ARRAY_SIZE(au1200_psc0_res),
+ .resource = au1200_psc0_res,
+};
+
+static void db1200_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
+{
+ if (cs)
+ bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_SPISEL);
+ else
+ bcsr_mod(BCSR_RESETS, BCSR_RESETS_SPISEL, 0);
+}
+
+static struct au1550_spi_info db1200_spi_platdata = {
+ .mainclk_hz = 50000000, /* PSC0 clock */
+ .num_chipselect = 2,
+ .activate_cs = db1200_spi_cs_en,
+};
+
+static u64 spi_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device db1200_spi_dev = {
+ .dev = {
+ .dma_mask = &spi_dmamask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .platform_data = &db1200_spi_platdata,
+ },
+ .name = "au1550-spi",
+ .id = 0, /* bus number */
+ .num_resources = ARRAY_SIZE(au1200_psc0_res),
+ .resource = au1200_psc0_res,
+};
+
+static struct platform_device *db1200_devs[] __initdata = {
+ NULL, /* PSC0, selected by S6.8 */
+ &db1200_ide_dev,
+ &db1200_eth_dev,
+ &db1200_rtc_dev,
+ &db1200_nand_dev,
+};
+
+static int __init db1200_dev_init(void)
+{
+ unsigned long pfc;
+ unsigned short sw;
+ int swapped;
+
+ i2c_register_board_info(0, db1200_i2c_devs,
+ ARRAY_SIZE(db1200_i2c_devs));
+ spi_register_board_info(db1200_spi_devs,
+ ARRAY_SIZE(db1200_i2c_devs));
+
+ /* SWITCHES: S6.8 I2C/SPI selector (OFF=I2C ON=SPI)
+ */
+
+ /* NOTE: GPIO215 controls OTG VBUS supply. In SPI mode however
+ * this pin is claimed by PSC0 (unused though, but pinmux doesn't
+ * allow to free it without crippling the SPI interface).
+ * As a result, in SPI mode, OTG simply won't work (PSC0 uses
+ * it as an input pin which is pulled high on the boards).
+ */
+ pfc = __raw_readl((void __iomem *)SYS_PINFUNC) & ~SYS_PINFUNC_P0A;
+
+ /* switch off OTG VBUS supply */
+ gpio_request(215, "otg-vbus");
+ gpio_direction_output(215, 1);
+
+ printk(KERN_INFO "DB1200 device configuration:\n");
+
+ sw = bcsr_read(BCSR_SWITCHES);
+ if (sw & BCSR_SWITCHES_DIP_8) {
+ db1200_devs[0] = &db1200_i2c_dev;
+ bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC0MUX, 0);
+
+ pfc |= (2 << 17); /* GPIO2 block owns GPIO215 */
+
+ printk(KERN_INFO " S6.8 OFF: PSC0 mode I2C\n");
+ printk(KERN_INFO " OTG port VBUS supply available!\n");
+ } else {
+ db1200_devs[0] = &db1200_spi_dev;
+ bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC0MUX);
+
+ pfc |= (1 << 17); /* PSC0 owns GPIO215 */
+
+ printk(KERN_INFO " S6.8 ON : PSC0 mode SPI\n");
+ printk(KERN_INFO " OTG port VBUS supply disabled\n");
+ }
+ __raw_writel(pfc, (void __iomem *)SYS_PINFUNC);
+ wmb();
+
+ db1x_register_pcmcia_socket(PCMCIA_ATTR_PSEUDO_PHYS,
+ PCMCIA_ATTR_PSEUDO_PHYS + 0x00040000 - 1,
+ PCMCIA_MEM_PSEUDO_PHYS,
+ PCMCIA_MEM_PSEUDO_PHYS + 0x00040000 - 1,
+ PCMCIA_IO_PSEUDO_PHYS,
+ PCMCIA_IO_PSEUDO_PHYS + 0x00001000 - 1,
+ DB1200_PC0_INT,
+ DB1200_PC0_INSERT_INT,
+ /*DB1200_PC0_STSCHG_INT*/0,
+ DB1200_PC0_EJECT_INT,
+ 0);
+
+ db1x_register_pcmcia_socket(PCMCIA_ATTR_PSEUDO_PHYS + 0x00400000,
+ PCMCIA_ATTR_PSEUDO_PHYS + 0x00440000 - 1,
+ PCMCIA_MEM_PSEUDO_PHYS + 0x00400000,
+ PCMCIA_MEM_PSEUDO_PHYS + 0x00440000 - 1,
+ PCMCIA_IO_PSEUDO_PHYS + 0x00400000,
+ PCMCIA_IO_PSEUDO_PHYS + 0x00401000 - 1,
+ DB1200_PC1_INT,
+ DB1200_PC1_INSERT_INT,
+ /*DB1200_PC1_STSCHG_INT*/0,
+ DB1200_PC1_EJECT_INT,
+ 1);
+
+ swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
+ db1x_register_norflash(64 << 20, 2, swapped);
+
+ return platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
+}
+device_initcall(db1200_dev_init);
+
+/* au1200fb calls these: STERBT EINEN TRAGISCHEN TOD!!! */
+int board_au1200fb_panel(void)
+{
+ return (bcsr_read(BCSR_SWITCHES) >> 8) & 0x0f;
+}
+
+int board_au1200fb_panel_init(void)
+{
+ /* Apply power */
+ bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
+ BCSR_BOARD_LCDBL);
+ return 0;
+}
+
+int board_au1200fb_panel_shutdown(void)
+{
+ /* Remove power */
+ bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
+ BCSR_BOARD_LCDBL, 0);
+ return 0;
+}
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