diff options
Diffstat (limited to 'arch/mips/ar7/platform.c')
| -rw-r--r-- | arch/mips/ar7/platform.c | 707 |
1 files changed, 378 insertions, 329 deletions
diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c index f70a10a8cc9..246df7aca2e 100644 --- a/arch/mips/ar7/platform.c +++ b/arch/mips/ar7/platform.c @@ -34,45 +34,50 @@ #include <linux/etherdevice.h> #include <linux/phy.h> #include <linux/phy_fixed.h> +#include <linux/gpio.h> +#include <linux/clk.h> #include <asm/addrspace.h> #include <asm/mach-ar7/ar7.h> #include <asm/mach-ar7/gpio.h> #include <asm/mach-ar7/prom.h> +/***************************************************************************** + * VLYNQ Bus + ****************************************************************************/ struct plat_vlynq_data { struct plat_vlynq_ops ops; int gpio_bit; int reset_bit; }; - static int vlynq_on(struct vlynq_device *dev) { - int result; + int ret; struct plat_vlynq_data *pdata = dev->dev.platform_data; - result = gpio_request(pdata->gpio_bit, "vlynq"); - if (result) + ret = gpio_request(pdata->gpio_bit, "vlynq"); + if (ret) goto out; ar7_device_reset(pdata->reset_bit); - result = ar7_gpio_disable(pdata->gpio_bit); - if (result) + ret = ar7_gpio_disable(pdata->gpio_bit); + if (ret) goto out_enabled; - result = ar7_gpio_enable(pdata->gpio_bit); - if (result) + ret = ar7_gpio_enable(pdata->gpio_bit); + if (ret) goto out_enabled; - result = gpio_direction_output(pdata->gpio_bit, 0); - if (result) + ret = gpio_direction_output(pdata->gpio_bit, 0); + if (ret) goto out_gpio_enabled; msleep(50); gpio_set_value(pdata->gpio_bit, 1); + msleep(50); return 0; @@ -83,320 +88,384 @@ out_enabled: ar7_device_disable(pdata->reset_bit); gpio_free(pdata->gpio_bit); out: - return result; + return ret; } static void vlynq_off(struct vlynq_device *dev) { struct plat_vlynq_data *pdata = dev->dev.platform_data; + ar7_gpio_disable(pdata->gpio_bit); gpio_free(pdata->gpio_bit); ar7_device_disable(pdata->reset_bit); } -static struct resource physmap_flash_resource = { - .name = "mem", - .flags = IORESOURCE_MEM, - .start = 0x10000000, - .end = 0x107fffff, -}; - -static struct resource cpmac_low_res[] = { +static struct resource vlynq_low_res[] = { { - .name = "regs", - .flags = IORESOURCE_MEM, - .start = AR7_REGS_MAC0, - .end = AR7_REGS_MAC0 + 0x7ff, + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ0, + .end = AR7_REGS_VLYNQ0 + 0xff, }, { - .name = "irq", - .flags = IORESOURCE_IRQ, - .start = 27, - .end = 27, + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 29, + .end = 29, }, -}; - -static struct resource cpmac_high_res[] = { { - .name = "regs", - .flags = IORESOURCE_MEM, - .start = AR7_REGS_MAC1, - .end = AR7_REGS_MAC1 + 0x7ff, + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x04000000, + .end = 0x04ffffff, }, { - .name = "irq", - .flags = IORESOURCE_IRQ, - .start = 41, - .end = 41, + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 80, + .end = 111, }, }; -static struct resource vlynq_low_res[] = { +static struct resource vlynq_high_res[] = { { - .name = "regs", - .flags = IORESOURCE_MEM, - .start = AR7_REGS_VLYNQ0, - .end = AR7_REGS_VLYNQ0 + 0xff, + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ1, + .end = AR7_REGS_VLYNQ1 + 0xff, }, { - .name = "irq", - .flags = IORESOURCE_IRQ, - .start = 29, - .end = 29, + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 33, + .end = 33, }, { - .name = "mem", - .flags = IORESOURCE_MEM, - .start = 0x04000000, - .end = 0x04ffffff, + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x0c000000, + .end = 0x0cffffff, }, { - .name = "devirq", - .flags = IORESOURCE_IRQ, - .start = 80, - .end = 111, + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 112, + .end = 143, }, }; -static struct resource vlynq_high_res[] = { - { - .name = "regs", - .flags = IORESOURCE_MEM, - .start = AR7_REGS_VLYNQ1, - .end = AR7_REGS_VLYNQ1 + 0xff, +static struct plat_vlynq_data vlynq_low_data = { + .ops = { + .on = vlynq_on, + .off = vlynq_off, }, - { - .name = "irq", - .flags = IORESOURCE_IRQ, - .start = 33, - .end = 33, + .reset_bit = 20, + .gpio_bit = 18, +}; + +static struct plat_vlynq_data vlynq_high_data = { + .ops = { + .on = vlynq_on, + .off = vlynq_off, }, - { - .name = "mem", - .flags = IORESOURCE_MEM, - .start = 0x0c000000, - .end = 0x0cffffff, + .reset_bit = 26, + .gpio_bit = 19, +}; + +static struct platform_device vlynq_low = { + .id = 0, + .name = "vlynq", + .dev = { + .platform_data = &vlynq_low_data, }, - { - .name = "devirq", - .flags = IORESOURCE_IRQ, - .start = 112, - .end = 143, + .resource = vlynq_low_res, + .num_resources = ARRAY_SIZE(vlynq_low_res), +}; + +static struct platform_device vlynq_high = { + .id = 1, + .name = "vlynq", + .dev = { + .platform_data = &vlynq_high_data, }, + .resource = vlynq_high_res, + .num_resources = ARRAY_SIZE(vlynq_high_res), }; -static struct resource usb_res[] = { - { - .name = "regs", - .flags = IORESOURCE_MEM, - .start = AR7_REGS_USB, - .end = AR7_REGS_USB + 0xff, +/***************************************************************************** + * Flash + ****************************************************************************/ +static struct resource physmap_flash_resource = { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x10000000, + .end = 0x107fffff, +}; + +static struct physmap_flash_data physmap_flash_data = { + .width = 2, +}; + +static struct platform_device physmap_flash = { + .name = "physmap-flash", + .dev = { + .platform_data = &physmap_flash_data, }, + .resource = &physmap_flash_resource, + .num_resources = 1, +}; + +/***************************************************************************** + * Ethernet + ****************************************************************************/ +static struct resource cpmac_low_res[] = { { - .name = "irq", - .flags = IORESOURCE_IRQ, - .start = 32, - .end = 32, + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC0, + .end = AR7_REGS_MAC0 + 0x7ff, }, { - .name = "mem", - .flags = IORESOURCE_MEM, - .start = 0x03400000, - .end = 0x03401fff, + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 27, + .end = 27, }, }; -static struct physmap_flash_data physmap_flash_data = { - .width = 2, +static struct resource cpmac_high_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC1, + .end = AR7_REGS_MAC1 + 0x7ff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 41, + .end = 41, + }, }; static struct fixed_phy_status fixed_phy_status __initdata = { - .link = 1, - .speed = 100, - .duplex = 1, + .link = 1, + .speed = 100, + .duplex = 1, }; static struct plat_cpmac_data cpmac_low_data = { - .reset_bit = 17, - .power_bit = 20, - .phy_mask = 0x80000000, + .reset_bit = 17, + .power_bit = 20, + .phy_mask = 0x80000000, }; static struct plat_cpmac_data cpmac_high_data = { - .reset_bit = 21, - .power_bit = 22, - .phy_mask = 0x7fffffff, -}; - -static struct plat_vlynq_data vlynq_low_data = { - .ops.on = vlynq_on, - .ops.off = vlynq_off, - .reset_bit = 20, - .gpio_bit = 18, -}; - -static struct plat_vlynq_data vlynq_high_data = { - .ops.on = vlynq_on, - .ops.off = vlynq_off, - .reset_bit = 16, - .gpio_bit = 19, -}; - -static struct platform_device physmap_flash = { - .id = 0, - .name = "physmap-flash", - .dev.platform_data = &physmap_flash_data, - .resource = &physmap_flash_resource, - .num_resources = 1, + .reset_bit = 21, + .power_bit = 22, + .phy_mask = 0x7fffffff, }; static u64 cpmac_dma_mask = DMA_BIT_MASK(32); + static struct platform_device cpmac_low = { - .id = 0, - .name = "cpmac", + .id = 0, + .name = "cpmac", .dev = { - .dma_mask = &cpmac_dma_mask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = &cpmac_low_data, + .dma_mask = &cpmac_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &cpmac_low_data, }, - .resource = cpmac_low_res, - .num_resources = ARRAY_SIZE(cpmac_low_res), + .resource = cpmac_low_res, + .num_resources = ARRAY_SIZE(cpmac_low_res), }; static struct platform_device cpmac_high = { - .id = 1, - .name = "cpmac", + .id = 1, + .name = "cpmac", .dev = { - .dma_mask = &cpmac_dma_mask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = &cpmac_high_data, + .dma_mask = &cpmac_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &cpmac_high_data, }, - .resource = cpmac_high_res, - .num_resources = ARRAY_SIZE(cpmac_high_res), + .resource = cpmac_high_res, + .num_resources = ARRAY_SIZE(cpmac_high_res), }; -static struct platform_device vlynq_low = { - .id = 0, - .name = "vlynq", - .dev.platform_data = &vlynq_low_data, - .resource = vlynq_low_res, - .num_resources = ARRAY_SIZE(vlynq_low_res), -}; +static inline unsigned char char2hex(char h) +{ + switch (h) { + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + return h - '0'; + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + return h - 'A' + 10; + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + return h - 'a' + 10; + default: + return 0; + } +} -static struct platform_device vlynq_high = { - .id = 1, - .name = "vlynq", - .dev.platform_data = &vlynq_high_data, - .resource = vlynq_high_res, - .num_resources = ARRAY_SIZE(vlynq_high_res), +static void cpmac_get_mac(int instance, unsigned char *dev_addr) +{ + int i; + char name[5], default_mac[ETH_ALEN], *mac; + + mac = NULL; + sprintf(name, "mac%c", 'a' + instance); + mac = prom_getenv(name); + if (!mac) { + sprintf(name, "mac%c", 'a'); + mac = prom_getenv(name); + } + if (!mac) { + random_ether_addr(default_mac); + mac = default_mac; + } + for (i = 0; i < 6; i++) + dev_addr[i] = (char2hex(mac[i * 3]) << 4) + + char2hex(mac[i * 3 + 1]); +} + +/***************************************************************************** + * USB + ****************************************************************************/ +static struct resource usb_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_USB, + .end = AR7_REGS_USB + 0xff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 32, + .end = 32, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x03400000, + .end = 0x03401fff, + }, }; +static struct platform_device ar7_udc = { + .name = "ar7_udc", + .resource = usb_res, + .num_resources = ARRAY_SIZE(usb_res), +}; +/***************************************************************************** + * LEDs + ****************************************************************************/ static struct gpio_led default_leds[] = { { - .name = "status", - .gpio = 8, - .active_low = 1, + .name = "status", + .gpio = 8, + .active_low = 1, }, }; static struct gpio_led dsl502t_leds[] = { { - .name = "status", - .gpio = 9, - .active_low = 1, + .name = "status", + .gpio = 9, + .active_low = 1, }, { - .name = "ethernet", - .gpio = 7, - .active_low = 1, + .name = "ethernet", + .gpio = 7, + .active_low = 1, }, { - .name = "usb", - .gpio = 12, - .active_low = 1, + .name = "usb", + .gpio = 12, + .active_low = 1, }, }; static struct gpio_led dg834g_leds[] = { { - .name = "ppp", - .gpio = 6, - .active_low = 1, + .name = "ppp", + .gpio = 6, + .active_low = 1, }, { - .name = "status", - .gpio = 7, - .active_low = 1, + .name = "status", + .gpio = 7, + .active_low = 1, }, { - .name = "adsl", - .gpio = 8, - .active_low = 1, + .name = "adsl", + .gpio = 8, + .active_low = 1, }, { - .name = "wifi", - .gpio = 12, - .active_low = 1, + .name = "wifi", + .gpio = 12, + .active_low = 1, }, { - .name = "power", - .gpio = 14, - .active_low = 1, - .default_trigger = "default-on", + .name = "power", + .gpio = 14, + .active_low = 1, + .default_trigger = "default-on", }, }; static struct gpio_led fb_sl_leds[] = { { - .name = "1", - .gpio = 7, + .name = "1", + .gpio = 7, }, { - .name = "2", - .gpio = 13, - .active_low = 1, + .name = "2", + .gpio = 13, + .active_low = 1, }, { - .name = "3", - .gpio = 10, - .active_low = 1, + .name = "3", + .gpio = 10, + .active_low = 1, }, { - .name = "4", - .gpio = 12, - .active_low = 1, + .name = "4", + .gpio = 12, + .active_low = 1, }, { - .name = "5", - .gpio = 9, - .active_low = 1, + .name = "5", + .gpio = 9, + .active_low = 1, }, }; static struct gpio_led fb_fon_leds[] = { { - .name = "1", - .gpio = 8, + .name = "1", + .gpio = 8, }, { - .name = "2", - .gpio = 3, - .active_low = 1, + .name = "2", + .gpio = 3, + .active_low = 1, }, { - .name = "3", - .gpio = 5, + .name = "3", + .gpio = 5, }, { - .name = "4", - .gpio = 4, - .active_low = 1, + .name = "4", + .gpio = 4, + .active_low = 1, }, { - .name = "5", - .gpio = 11, - .active_low = 1, + .name = "5", + .gpio = 11, + .active_low = 1, }, }; @@ -404,69 +473,11 @@ static struct gpio_led_platform_data ar7_led_data; static struct platform_device ar7_gpio_leds = { .name = "leds-gpio", - .id = -1, .dev = { .platform_data = &ar7_led_data, } }; -static struct platform_device ar7_udc = { - .id = -1, - .name = "ar7_udc", - .resource = usb_res, - .num_resources = ARRAY_SIZE(usb_res), -}; - -static struct resource ar7_wdt_res = { - .name = "regs", - .start = -1, /* Filled at runtime */ - .end = -1, /* Filled at runtime */ - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ar7_wdt = { - .id = -1, - .name = "ar7_wdt", - .resource = &ar7_wdt_res, - .num_resources = 1, -}; - -static inline unsigned char char2hex(char h) -{ - switch (h) { - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - return h - '0'; - case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': - return h - 'A' + 10; - case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': - return h - 'a' + 10; - default: - return 0; - } -} - -static void cpmac_get_mac(int instance, unsigned char *dev_addr) -{ - int i; - char name[5], default_mac[ETH_ALEN], *mac; - - mac = NULL; - sprintf(name, "mac%c", 'a' + instance); - mac = prom_getenv(name); - if (!mac) { - sprintf(name, "mac%c", 'a'); - mac = prom_getenv(name); - } - if (!mac) { - random_ether_addr(default_mac); - mac = default_mac; - } - for (i = 0; i < 6; i++) - dev_addr[i] = (char2hex(mac[i * 3]) << 4) + - char2hex(mac[i * 3 + 1]); -} - static void __init detect_leds(void) { char *prid, *usb_prod; @@ -499,111 +510,149 @@ static void __init detect_leds(void) } } -static int __init ar7_register_devices(void) +/***************************************************************************** + * Watchdog + ****************************************************************************/ +static struct resource ar7_wdt_res = { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = -1, /* Filled at runtime */ + .end = -1, /* Filled at runtime */ +}; + +static struct platform_device ar7_wdt = { + .name = "ar7_wdt", + .resource = &ar7_wdt_res, + .num_resources = 1, +}; + +/***************************************************************************** + * Init + ****************************************************************************/ +static int __init ar7_register_uarts(void) { - u16 chip_id; - int res; - u32 *bootcr, val; #ifdef CONFIG_SERIAL_8250 - static struct uart_port uart_port[2] __initdata; + static struct uart_port uart_port __initdata; + struct clk *bus_clk; + int res; + + memset(&uart_port, 0, sizeof(struct uart_port)); + + bus_clk = clk_get(NULL, "bus"); + if (IS_ERR(bus_clk)) + panic("unable to get bus clk\n"); + + uart_port.type = PORT_16550A; + uart_port.uartclk = clk_get_rate(bus_clk) / 2; + uart_port.iotype = UPIO_MEM32; + uart_port.regshift = 2; - memset(uart_port, 0, sizeof(struct uart_port) * 2); + uart_port.line = 0; + uart_port.irq = AR7_IRQ_UART0; + uart_port.mapbase = AR7_REGS_UART0; + uart_port.membase = ioremap(uart_port.mapbase, 256); - uart_port[0].type = PORT_16550A; - uart_port[0].line = 0; - uart_port[0].irq = AR7_IRQ_UART0; - uart_port[0].uartclk = ar7_bus_freq() / 2; - uart_port[0].iotype = UPIO_MEM32; - uart_port[0].mapbase = AR7_REGS_UART0; - uart_port[0].membase = ioremap(uart_port[0].mapbase, 256); - uart_port[0].regshift = 2; - res = early_serial_setup(&uart_port[0]); + res = early_serial_setup(&uart_port); if (res) return res; - /* Only TNETD73xx have a second serial port */ if (ar7_has_second_uart()) { - uart_port[1].type = PORT_16550A; - uart_port[1].line = 1; - uart_port[1].irq = AR7_IRQ_UART1; - uart_port[1].uartclk = ar7_bus_freq() / 2; - uart_port[1].iotype = UPIO_MEM32; - uart_port[1].mapbase = UR8_REGS_UART1; - uart_port[1].membase = ioremap(uart_port[1].mapbase, 256); - uart_port[1].regshift = 2; - res = early_serial_setup(&uart_port[1]); + uart_port.line = 1; + uart_port.irq = AR7_IRQ_UART1; + uart_port.mapbase = UR8_REGS_UART1; + uart_port.membase = ioremap(uart_port.mapbase, 256); + + res = early_serial_setup(&uart_port); if (res) return res; } -#endif /* CONFIG_SERIAL_8250 */ +#endif + + return 0; +} + +static int __init ar7_register_devices(void) +{ + void __iomem *bootcr; + u32 val; + u16 chip_id; + int res; + + res = ar7_register_uarts(); + if (res) + pr_err("unable to setup uart(s): %d\n", res); + res = platform_device_register(&physmap_flash); if (res) - return res; + pr_warning("unable to register physmap-flash: %d\n", res); ar7_device_disable(vlynq_low_data.reset_bit); res = platform_device_register(&vlynq_low); if (res) - return res; + pr_warning("unable to register vlynq-low: %d\n", res); if (ar7_has_high_vlynq()) { ar7_device_disable(vlynq_high_data.reset_bit); res = platform_device_register(&vlynq_high); if (res) - return res; + pr_warning("unable to register vlynq-high: %d\n", res); } if (ar7_has_high_cpmac()) { - res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status); - if (res && res != -ENODEV) - return res; - cpmac_get_mac(1, cpmac_high_data.dev_addr); - res = platform_device_register(&cpmac_high); - if (res) - return res; - } else { + if (!res) { + cpmac_get_mac(1, cpmac_high_data.dev_addr); + + res = platform_device_register(&cpmac_high); + if (res) + pr_warning("unable to register cpmac-high: %d\n", res); + } else + pr_warning("unable to add cpmac-high phy: %d\n", res); + } else cpmac_low_data.phy_mask = 0xffffffff; - } res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status); - if (res && res != -ENODEV) - return res; - - cpmac_get_mac(0, cpmac_low_data.dev_addr); - res = platform_device_register(&cpmac_low); - if (res) - return res; + if (!res) { + cpmac_get_mac(0, cpmac_low_data.dev_addr); + res = platform_device_register(&cpmac_low); + if (res) + pr_warning("unable to register cpmac-low: %d\n", res); + } else + pr_warning("unable to add cpmac-low phy: %d\n", res); detect_leds(); res = platform_device_register(&ar7_gpio_leds); if (res) - return res; + pr_warning("unable to register leds: %d\n", res); res = platform_device_register(&ar7_udc); + if (res) + pr_warning("unable to register usb slave: %d\n", res); - chip_id = ar7_chip_id(); - switch (chip_id) { - case AR7_CHIP_7100: - case AR7_CHIP_7200: - ar7_wdt_res.start = AR7_REGS_WDT; - break; - case AR7_CHIP_7300: - ar7_wdt_res.start = UR8_REGS_WDT; - break; - default: - break; - } - - ar7_wdt_res.end = ar7_wdt_res.start + 0x20; - - bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); - val = *bootcr; + /* Register watchdog only if enabled in hardware */ + bootcr = ioremap_nocache(AR7_REGS_DCL, 4); + val = readl(bootcr); iounmap(bootcr); + if (val & AR7_WDT_HW_ENA) { + chip_id = ar7_chip_id(); + switch (chip_id) { + case AR7_CHIP_7100: + case AR7_CHIP_7200: + ar7_wdt_res.start = AR7_REGS_WDT; + break; + case AR7_CHIP_7300: + ar7_wdt_res.start = UR8_REGS_WDT; + break; + default: + break; + } - /* Register watchdog only if enabled in hardware */ - if (val & AR7_WDT_HW_ENA) + ar7_wdt_res.end = ar7_wdt_res.start + 0x20; res = platform_device_register(&ar7_wdt); + if (res) + pr_warning("unable to register watchdog: %d\n", res); + } - return res; + return 0; } arch_initcall(ar7_register_devices); |