diff options
Diffstat (limited to 'arch/arm/mach-u300/core.c')
| -rw-r--r-- | arch/arm/mach-u300/core.c | 548 |
1 files changed, 6 insertions, 542 deletions
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c index 8f9e77aea76a..13d48125b89b 100644 --- a/arch/arm/mach-u300/core.c +++ b/arch/arm/mach-u300/core.c @@ -9,50 +9,20 @@ * Author: Linus Walleij <linus.walleij@stericsson.com> */ #include <linux/kernel.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/bitops.h> -#include <linux/device.h> -#include <linux/mm.h> -#include <linux/termios.h> -#include <linux/dmaengine.h> -#include <linux/amba/bus.h> -#include <linux/amba/mmci.h> -#include <linux/amba/pl022.h> -#include <linux/amba/serial.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/fsmc.h> #include <linux/pinctrl/machine.h> #include <linux/pinctrl/pinconf-generic.h> -#include <linux/dma-mapping.h> #include <linux/platform_data/clk-u300.h> #include <linux/platform_data/pinctrl-coh901.h> -#include <linux/platform_data/dma-coh901318.h> -#include <linux/irqchip/arm-vic.h> #include <linux/irqchip.h> #include <linux/of_platform.h> #include <linux/clocksource.h> +#include <linux/clk.h> -#include <asm/types.h> -#include <asm/setup.h> -#include <asm/memory.h> #include <asm/mach/map.h> -#include <asm/mach-types.h> #include <asm/mach/arch.h> -#include <mach/hardware.h> +#include <mach/u300-regs.h> #include <mach/syscon.h> -#include <mach/irqs.h> - -#include "timer.h" -#include "spi.h" -#include "i2c.h" -#include "u300-gpio.h" /* * Static I/O mappings that are needed for booting the U300 platforms. The @@ -87,287 +57,6 @@ static void __init u300_map_io(void) } /* - * Declaration of devices found on the U300 board and - * their respective memory locations. - */ - -static struct amba_pl011_data uart0_plat_data = { -#ifdef CONFIG_COH901318 - .dma_filter = coh901318_filter_id, - .dma_rx_param = (void *) U300_DMA_UART0_RX, - .dma_tx_param = (void *) U300_DMA_UART0_TX, -#endif -}; - -/* Slow device at 0x3000 offset */ -static AMBA_APB_DEVICE(uart0, "uart0", 0, U300_UART0_BASE, - { IRQ_U300_UART0 }, &uart0_plat_data); - -/* The U335 have an additional UART1 on the APP CPU */ -static struct amba_pl011_data uart1_plat_data = { -#ifdef CONFIG_COH901318 - .dma_filter = coh901318_filter_id, - .dma_rx_param = (void *) U300_DMA_UART1_RX, - .dma_tx_param = (void *) U300_DMA_UART1_TX, -#endif -}; - -/* Fast device at 0x7000 offset */ -static AMBA_APB_DEVICE(uart1, "uart1", 0, U300_UART1_BASE, - { IRQ_U300_UART1 }, &uart1_plat_data); - -/* AHB device at 0x4000 offset */ -static AMBA_APB_DEVICE(pl172, "pl172", 0, U300_EMIF_CFG_BASE, { }, NULL); - -/* Fast device at 0x6000 offset */ -static AMBA_APB_DEVICE(pl022, "pl022", 0, U300_SPI_BASE, - { IRQ_U300_SPI }, NULL); - -/* Fast device at 0x1000 offset */ -#define U300_MMCSD_IRQS { IRQ_U300_MMCSD_MCIINTR0, IRQ_U300_MMCSD_MCIINTR1 } - -static struct mmci_platform_data mmcsd_platform_data = { - /* - * Do not set ocr_mask or voltage translation function, - * we have a regulator we can control instead. - */ - .f_max = 24000000, - .gpio_wp = -1, - .gpio_cd = U300_GPIO_PIN_MMC_CD, - .cd_invert = true, - .capabilities = MMC_CAP_MMC_HIGHSPEED | - MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA, -#ifdef CONFIG_COH901318 - .dma_filter = coh901318_filter_id, - .dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX, - /* Don't specify a TX channel, this RX channel is bidirectional */ -#endif -}; - -static AMBA_APB_DEVICE(mmcsd, "mmci", 0, U300_MMCSD_BASE, - U300_MMCSD_IRQS, &mmcsd_platform_data); - -/* - * The order of device declaration may be important, since some devices - * have dependencies on other devices being initialized first. - */ -static struct amba_device *amba_devs[] __initdata = { - &uart0_device, - &uart1_device, - &pl022_device, - &pl172_device, - &mmcsd_device, -}; - -/* Here follows a list of all hw resources that the platform devices - * allocate. Note, clock dependencies are not included - */ - -static struct resource gpio_resources[] = { - { - .start = U300_GPIO_BASE, - .end = (U300_GPIO_BASE + SZ_4K - 1), - .flags = IORESOURCE_MEM, - }, - { - .name = "gpio0", - .start = IRQ_U300_GPIO_PORT0, - .end = IRQ_U300_GPIO_PORT0, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio1", - .start = IRQ_U300_GPIO_PORT1, - .end = IRQ_U300_GPIO_PORT1, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio2", - .start = IRQ_U300_GPIO_PORT2, - .end = IRQ_U300_GPIO_PORT2, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio3", - .start = IRQ_U300_GPIO_PORT3, - .end = IRQ_U300_GPIO_PORT3, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio4", - .start = IRQ_U300_GPIO_PORT4, - .end = IRQ_U300_GPIO_PORT4, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio5", - .start = IRQ_U300_GPIO_PORT5, - .end = IRQ_U300_GPIO_PORT5, - .flags = IORESOURCE_IRQ, - }, - { - .name = "gpio6", - .start = IRQ_U300_GPIO_PORT6, - .end = IRQ_U300_GPIO_PORT6, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct resource keypad_resources[] = { - { - .start = U300_KEYPAD_BASE, - .end = U300_KEYPAD_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "coh901461-press", - .start = IRQ_U300_KEYPAD_KEYBF, - .end = IRQ_U300_KEYPAD_KEYBF, - .flags = IORESOURCE_IRQ, - }, - { - .name = "coh901461-release", - .start = IRQ_U300_KEYPAD_KEYBR, - .end = IRQ_U300_KEYPAD_KEYBR, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct resource rtc_resources[] = { - { - .start = U300_RTC_BASE, - .end = U300_RTC_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - { - .start = IRQ_U300_RTC, - .end = IRQ_U300_RTC, - .flags = IORESOURCE_IRQ, - }, -}; - -/* - * Fsmc does have IRQs: #43 and #44 (NFIF and NFIF2) - * but these are not yet used by the driver. - */ -static struct resource fsmc_resources[] = { - { - .name = "nand_addr", - .start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE, - .end = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE + SZ_16K - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "nand_cmd", - .start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE, - .end = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE + SZ_16K - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "nand_data", - .start = U300_NAND_CS0_PHYS_BASE, - .end = U300_NAND_CS0_PHYS_BASE + SZ_16K - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "fsmc_regs", - .start = U300_NAND_IF_PHYS_BASE, - .end = U300_NAND_IF_PHYS_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, -}; - -static struct resource i2c0_resources[] = { - { - .start = U300_I2C0_BASE, - .end = U300_I2C0_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - { - .start = IRQ_U300_I2C0, - .end = IRQ_U300_I2C0, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct resource i2c1_resources[] = { - { - .start = U300_I2C1_BASE, - .end = U300_I2C1_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - { - .start = IRQ_U300_I2C1, - .end = IRQ_U300_I2C1, - .flags = IORESOURCE_IRQ, - }, - -}; - -static struct resource wdog_resources[] = { - { - .start = U300_WDOG_BASE, - .end = U300_WDOG_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - { - .start = IRQ_U300_WDOG, - .end = IRQ_U300_WDOG, - .flags = IORESOURCE_IRQ, - } -}; - -static struct resource dma_resource[] = { - { - .start = U300_DMAC_BASE, - .end = U300_DMAC_BASE + PAGE_SIZE - 1, - .flags = IORESOURCE_MEM, - }, - { - .start = IRQ_U300_DMA, - .end = IRQ_U300_DMA, - .flags = IORESOURCE_IRQ, - } -}; - - -static struct resource pinctrl_resources[] = { - { - .start = U300_SYSCON_BASE, - .end = U300_SYSCON_BASE + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, -}; - -static struct platform_device wdog_device = { - .name = "coh901327_wdog", - .id = -1, - .num_resources = ARRAY_SIZE(wdog_resources), - .resource = wdog_resources, -}; - -static struct platform_device i2c0_device = { - .name = "stu300", - .id = 0, - .num_resources = ARRAY_SIZE(i2c0_resources), - .resource = i2c0_resources, -}; - -static struct platform_device i2c1_device = { - .name = "stu300", - .id = 1, - .num_resources = ARRAY_SIZE(i2c1_resources), - .resource = i2c1_resources, -}; - -static struct platform_device pinctrl_device = { - .name = "pinctrl-u300", - .id = -1, - .num_resources = ARRAY_SIZE(pinctrl_resources), - .resource = pinctrl_resources, -}; - -/* * The different variants have a few different versions of the * GPIO block, with different number of ports. */ @@ -376,75 +65,6 @@ static struct u300_gpio_platform u300_gpio_plat = { .gpio_base = 0, }; -static struct platform_device gpio_device = { - .name = "u300-gpio", - .id = -1, - .num_resources = ARRAY_SIZE(gpio_resources), - .resource = gpio_resources, - .dev = { - .platform_data = &u300_gpio_plat, - }, -}; - -static struct platform_device keypad_device = { - .name = "keypad", - .id = -1, - .num_resources = ARRAY_SIZE(keypad_resources), - .resource = keypad_resources, -}; - -static struct platform_device rtc_device = { - .name = "rtc-coh901331", - .id = -1, - .num_resources = ARRAY_SIZE(rtc_resources), - .resource = rtc_resources, -}; - -static struct mtd_partition u300_partitions[] = { - { - .name = "bootrecords", - .offset = 0, - .size = SZ_128K, - }, - { - .name = "free", - .offset = SZ_128K, - .size = 8064 * SZ_1K, - }, - { - .name = "platform", - .offset = 8192 * SZ_1K, - .size = 253952 * SZ_1K, - }, -}; - -static struct fsmc_nand_platform_data nand_platform_data = { - .partitions = u300_partitions, - .nr_partitions = ARRAY_SIZE(u300_partitions), - .options = NAND_SKIP_BBTSCAN, - .width = FSMC_NAND_BW8, -}; - -static struct platform_device nand_device = { - .name = "fsmc-nand", - .id = -1, - .resource = fsmc_resources, - .num_resources = ARRAY_SIZE(fsmc_resources), - .dev = { - .platform_data = &nand_platform_data, - }, -}; - -static struct platform_device dma_device = { - .name = "coh901318", - .id = -1, - .resource = dma_resource, - .num_resources = ARRAY_SIZE(dma_resource), - .dev = { - .coherent_dma_mask = ~0, - }, -}; - static unsigned long pin_pullup_conf[] = { PIN_CONF_PACKED(PIN_CONFIG_BIAS_PULL_UP, 1), }; @@ -471,61 +91,6 @@ static struct pinctrl_map __initdata u300_pinmux_map[] = { pin_highz_conf), }; -/* - * Notice that AMBA devices are initialized before platform devices. - * - */ -static struct platform_device *platform_devs[] __initdata = { - &dma_device, - &i2c0_device, - &i2c1_device, - &keypad_device, - &rtc_device, - &pinctrl_device, - &gpio_device, - &nand_device, - &wdog_device, -}; - -/* - * Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected - * together so some interrupts are connected to the first one and some - * to the second one. - */ -static void __init u300_init_irq(void) -{ - u32 mask[2] = {0, 0}; - struct clk *clk; - int i; - - /* initialize clocking early, we want to clock the INTCON */ - u300_clk_init(U300_SYSCON_VBASE); - - /* Bootstrap EMIF and SEMI clocks */ - clk = clk_get_sys("pl172", NULL); - BUG_ON(IS_ERR(clk)); - clk_prepare_enable(clk); - clk = clk_get_sys("semi", NULL); - BUG_ON(IS_ERR(clk)); - clk_prepare_enable(clk); - - /* Clock the interrupt controller */ - clk = clk_get_sys("intcon", NULL); - BUG_ON(IS_ERR(clk)); - clk_prepare_enable(clk); - - for (i = 0; i < U300_VIC_IRQS_END; i++) - set_bit(i, (unsigned long *) &mask[0]); - vic_init((void __iomem *) U300_INTCON0_VBASE, IRQ_U300_INTCON0_START, - mask[0], mask[0]); - vic_init((void __iomem *) U300_INTCON1_VBASE, IRQ_U300_INTCON1_START, - mask[1], mask[1]); -} - - -/* - * U300 platforms peripheral handling - */ struct db_chip { u16 chipid; const char *name; @@ -604,74 +169,6 @@ static void __init u300_init_check_chip(void) } } -/* - * Some devices and their resources require reserved physical memory from - * the end of the available RAM. This function traverses the list of devices - * and assigns actual addresses to these. - */ -static void __init u300_assign_physmem(void) -{ - unsigned long curr_start = __pa(high_memory); - int i, j; - - for (i = 0; i < ARRAY_SIZE(platform_devs); i++) { - for (j = 0; j < platform_devs[i]->num_resources; j++) { - struct resource *const res = - &platform_devs[i]->resource[j]; - - if (IORESOURCE_MEM == res->flags && - 0 == res->start) { - res->start = curr_start; - res->end += curr_start; - curr_start += resource_size(res); - - printk(KERN_INFO "core.c: Mapping RAM " \ - "%#x-%#x to device %s:%s\n", - res->start, res->end, - platform_devs[i]->name, res->name); - } - } - } -} - -static void __init u300_init_machine(void) -{ - int i; - u16 val; - - /* Check what platform we run and print some status information */ - u300_init_check_chip(); - - /* Initialize SPI device with some board specifics */ - u300_spi_init(&pl022_device); - - /* Register the AMBA devices in the AMBA bus abstraction layer */ - for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { - struct amba_device *d = amba_devs[i]; - amba_device_register(d, &iomem_resource); - } - - u300_assign_physmem(); - - /* Initialize pinmuxing */ - pinctrl_register_mappings(u300_pinmux_map, - ARRAY_SIZE(u300_pinmux_map)); - - /* Register subdevices on the I2C buses */ - u300_i2c_register_board_devices(); - - /* Register the platform devices */ - platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); - - /* Register subdevices on the SPI bus */ - u300_spi_register_board_devices(); - - /* Enable SEMI self refresh */ - val = readw(U300_SYSCON_VBASE + U300_SYSCON_SMCR) | - U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE; - writew(val, U300_SYSCON_VBASE + U300_SYSCON_SMCR); -} - /* Forward declare this function from the watchdog */ void coh901327_watchdog_reset(void); @@ -692,35 +189,6 @@ static void u300_restart(char mode, const char *cmd) while (1); } -MACHINE_START(U300, "Ericsson AB U335 S335/B335 Prototype Board") - /* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */ - .atag_offset = 0x100, - .map_io = u300_map_io, - .nr_irqs = 0, - .init_irq = u300_init_irq, - .init_time = u300_timer_init, - .init_machine = u300_init_machine, - .restart = u300_restart, -MACHINE_END - -#ifdef CONFIG_OF - -static struct pl022_ssp_controller spi_plat_data = { - /* If you have several SPI buses this varies, we have only bus 0 */ - .bus_id = 0, - /* - * On the APP CPU GPIO 4, 5 and 6 are connected as generic - * chip selects for SPI. (Same on U330, U335 and U365.) - * TODO: make sure the GPIO driver can select these properly - * and do padmuxing accordingly too. - */ - .num_chipselect = 3, - .enable_dma = 1, - .dma_filter = coh901318_filter_id, - .dma_rx_param = (void *) U300_DMA_SPI_RX, - .dma_tx_param = (void *) U300_DMA_SPI_TX, -}; - /* These are mostly to get the right device names for the clock lookups */ static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("stericsson,pinctrl-u300", U300_SYSCON_BASE, @@ -736,17 +204,17 @@ static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("stericsson,fsmc-nand", U300_NAND_IF_PHYS_BASE, "fsmc-nand", NULL), OF_DEV_AUXDATA("arm,primecell", U300_UART0_BASE, - "uart0", &uart0_plat_data), + "uart0", NULL), OF_DEV_AUXDATA("arm,primecell", U300_UART1_BASE, - "uart1", &uart1_plat_data), + "uart1", NULL), OF_DEV_AUXDATA("arm,primecell", U300_SPI_BASE, - "pl022", &spi_plat_data), + "pl022", NULL), OF_DEV_AUXDATA("st,ddci2c", U300_I2C0_BASE, "stu300.0", NULL), OF_DEV_AUXDATA("st,ddci2c", U300_I2C1_BASE, "stu300.1", NULL), OF_DEV_AUXDATA("arm,primecell", U300_MMCSD_BASE, - "mmci", &mmcsd_platform_data), + "mmci", NULL), { /* sentinel */ }, }; @@ -780,8 +248,6 @@ static void __init u300_init_machine_dt(void) /* Check what platform we run and print some status information */ u300_init_check_chip(); - u300_assign_physmem(); - /* Initialize pinmuxing */ pinctrl_register_mappings(u300_pinmux_map, ARRAY_SIZE(u300_pinmux_map)); @@ -808,5 +274,3 @@ DT_MACHINE_START(U300_DT, "U300 S335/B335 (Device Tree)") .restart = u300_restart, .dt_compat = u300_board_compat, MACHINE_END - -#endif /* CONFIG_OF */ |