diff options
Diffstat (limited to 'arch/arm/mach-u300/core.c')
| -rw-r--r-- | arch/arm/mach-u300/core.c | 197 |
1 files changed, 113 insertions, 84 deletions
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c index 399c89f14dfb..ac0791e924bc 100644 --- a/arch/arm/mach-u300/core.c +++ b/arch/arm/mach-u300/core.c @@ -25,6 +25,9 @@ #include <linux/err.h> #include <linux/mtd/nand.h> #include <linux/mtd/fsmc.h> +#include <linux/pinctrl/machine.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/dma-mapping.h> #include <asm/types.h> #include <asm/setup.h> @@ -37,6 +40,7 @@ #include <mach/hardware.h> #include <mach/syscon.h> #include <mach/dma_channels.h> +#include <mach/gpio-u300.h> #include "clock.h" #include "mmc.h" @@ -68,30 +72,13 @@ static struct map_desc u300_io_desc[] __initdata = { .length = SZ_32K, .type = MT_DEVICE, }, - { - .virtual = 0xffff2000, /* TCM memory */ - .pfn = __phys_to_pfn(0xffff2000), - .length = SZ_16K, - .type = MT_DEVICE, - }, - - /* - * This overlaps with the IRQ vectors etc at 0xffff0000, so these - * may have to be moved to 0x00000000 in order to use the ROM. - */ - /* - { - .virtual = U300_BOOTROM_VIRT_BASE, - .pfn = __phys_to_pfn(U300_BOOTROM_PHYS_BASE), - .length = SZ_64K, - .type = MT_ROM, - }, - */ }; void __init u300_map_io(void) { iotable_init(u300_io_desc, ARRAY_SIZE(u300_io_desc)); + /* We enable a real big DMA buffer if need be. */ + init_consistent_dma_size(SZ_4M); } /* @@ -239,7 +226,7 @@ static struct resource gpio_resources[] = { .end = IRQ_U300_GPIO_PORT2, .flags = IORESOURCE_IRQ, }, -#ifdef U300_COH901571_3 +#if defined(CONFIG_MACH_U300_BS365) || defined(CONFIG_MACH_U300_BS335) { .name = "gpio3", .start = IRQ_U300_GPIO_PORT3, @@ -252,6 +239,7 @@ static struct resource gpio_resources[] = { .end = IRQ_U300_GPIO_PORT4, .flags = IORESOURCE_IRQ, }, +#endif #ifdef CONFIG_MACH_U300_BS335 { .name = "gpio5", @@ -266,7 +254,6 @@ static struct resource gpio_resources[] = { .flags = IORESOURCE_IRQ, }, #endif /* CONFIG_MACH_U300_BS335 */ -#endif /* U300_COH901571_3 */ }; static struct resource keypad_resources[] = { @@ -361,51 +348,6 @@ static struct resource wdog_resources[] = { } }; -/* TODO: These should be protected by suitable #ifdef's */ -static struct resource ave_resources[] = { - { - .name = "AVE3e I/O Area", - .start = U300_VIDEOENC_BASE, - .end = U300_VIDEOENC_BASE + SZ_512K - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "AVE3e IRQ0", - .start = IRQ_U300_VIDEO_ENC_0, - .end = IRQ_U300_VIDEO_ENC_0, - .flags = IORESOURCE_IRQ, - }, - { - .name = "AVE3e IRQ1", - .start = IRQ_U300_VIDEO_ENC_1, - .end = IRQ_U300_VIDEO_ENC_1, - .flags = IORESOURCE_IRQ, - }, - { - .name = "AVE3e Physmem Area", - .start = 0, /* 0 will be remapped to reserved memory */ - .end = SZ_1M - 1, - .flags = IORESOURCE_MEM, - }, - /* - * The AVE3e requires two regions of 256MB that it considers - * "invisible". The hardware will not be able to access these - * addresses, so they should never point to system RAM. - */ - { - .name = "AVE3e Reserved 0", - .start = 0xd0000000, - .end = 0xd0000000 + SZ_256M - 1, - .flags = IORESOURCE_MEM, - }, - { - .name = "AVE3e Reserved 1", - .start = 0xe0000000, - .end = 0xe0000000 + SZ_256M - 1, - .flags = IORESOURCE_MEM, - }, -}; - static struct resource dma_resource[] = { { .start = U300_DMAC_BASE, @@ -1535,6 +1477,14 @@ static struct coh901318_platform coh901318_platform = { .max_channels = U300_DMA_CHANNELS, }; +static struct resource pinmux_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, @@ -1556,11 +1506,35 @@ static struct platform_device i2c1_device = { .resource = i2c1_resources, }; +/* + * The different variants have a few different versions of the + * GPIO block, with different number of ports. + */ +static struct u300_gpio_platform u300_gpio_plat = { +#if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) + .variant = U300_GPIO_COH901335, + .ports = 3, +#endif +#ifdef CONFIG_MACH_U300_BS335 + .variant = U300_GPIO_COH901571_3_BS335, + .ports = 7, +#endif +#ifdef CONFIG_MACH_U300_BS365 + .variant = U300_GPIO_COH901571_3_BS365, + .ports = 5, +#endif + .gpio_base = 0, + .gpio_irq_base = IRQ_U300_GPIO_BASE, +}; + 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 = { @@ -1612,13 +1586,6 @@ static struct platform_device nand_device = { }, }; -static struct platform_device ave_device = { - .name = "video_enc", - .id = -1, - .num_resources = ARRAY_SIZE(ave_resources), - .resource = ave_resources, -}; - static struct platform_device dma_device = { .name = "coh901318", .id = -1, @@ -1630,6 +1597,72 @@ static struct platform_device dma_device = { }, }; +static struct platform_device pinmux_device = { + .name = "pinmux-u300", + .id = -1, + .num_resources = ARRAY_SIZE(pinmux_resources), + .resource = pinmux_resources, +}; + +/* Pinmux settings */ +static struct pinmux_map u300_pinmux_map[] = { + /* anonymous maps for chip power and EMIFs */ + PINMUX_MAP_PRIMARY_SYS_HOG("POWER", "power"), + PINMUX_MAP_PRIMARY_SYS_HOG("EMIF0", "emif0"), + PINMUX_MAP_PRIMARY_SYS_HOG("EMIF1", "emif1"), + /* per-device maps for MMC/SD, SPI and UART */ + PINMUX_MAP_PRIMARY("MMCSD", "mmc0", "mmci"), + PINMUX_MAP_PRIMARY("SPI", "spi0", "pl022"), + PINMUX_MAP_PRIMARY("UART0", "uart0", "uart0"), +}; + +struct u300_mux_hog { + const char *name; + struct device *dev; + struct pinmux *pmx; +}; + +static struct u300_mux_hog u300_mux_hogs[] = { + { + .name = "uart0", + .dev = &uart0_device.dev, + }, + { + .name = "spi0", + .dev = &pl022_device.dev, + }, + { + .name = "mmc0", + .dev = &mmcsd_device.dev, + }, +}; + +static int __init u300_pinmux_fetch(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(u300_mux_hogs); i++) { + struct pinmux *pmx; + int ret; + + pmx = pinmux_get(u300_mux_hogs[i].dev, NULL); + if (IS_ERR(pmx)) { + pr_err("u300: could not get pinmux hog %s\n", + u300_mux_hogs[i].name); + continue; + } + ret = pinmux_enable(pmx); + if (ret) { + pr_err("u300: could enable pinmux hog %s\n", + u300_mux_hogs[i].name); + continue; + } + u300_mux_hogs[i].pmx = pmx; + } + return 0; +} +subsys_initcall(u300_pinmux_fetch); + /* * Notice that AMBA devices are initialized before platform devices. * @@ -1643,10 +1676,9 @@ static struct platform_device *platform_devs[] __initdata = { &gpio_device, &nand_device, &wdog_device, - &ave_device + &pinmux_device, }; - /* * Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected * together so some interrupts are connected to the first one and some @@ -1666,7 +1698,7 @@ void __init u300_init_irq(void) BUG_ON(IS_ERR(clk)); clk_enable(clk); - for (i = 0; i < NR_IRQS; i++) + for (i = 0; i < U300_VIC_IRQS_END; i++) set_bit(i, (unsigned long *) &mask[0]); vic_init((void __iomem *) U300_INTCON0_VBASE, 0, mask[0], mask[0]); vic_init((void __iomem *) U300_INTCON1_VBASE, 32, mask[1], mask[1]); @@ -1828,6 +1860,10 @@ void __init u300_init_devices(void) u300_assign_physmem(); + /* Initialize pinmuxing */ + pinmux_register_mappings(u300_pinmux_map, + ARRAY_SIZE(u300_pinmux_map)); + /* Register subdevices on the I2C buses */ u300_i2c_register_board_devices(); @@ -1837,17 +1873,10 @@ void __init u300_init_devices(void) /* Register subdevices on the SPI bus */ u300_spi_register_board_devices(); -#ifndef CONFIG_MACH_U300_SEMI_IS_SHARED - /* - * Enable SEMI self refresh. Self-refresh of the SDRAM is entered when - * both subsystems are requesting this mode. - * If we not share the Acc SDRAM, this is never the case. Therefore - * enable it here from the App side. - */ + /* 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); -#endif /* CONFIG_MACH_U300_SEMI_IS_SHARED */ } static int core_module_init(void) |