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https://github.com/torvalds/linux.git
synced 2024-11-19 10:31:48 +00:00
362 lines
7.8 KiB
C
362 lines
7.8 KiB
C
/*
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* Versatile Express V2M Motherboard Support
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*/
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#include <linux/device.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/mmci.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/smsc911x.h>
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#include <linux/spinlock.h>
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#include <linux/sysdev.h>
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#include <linux/usb/isp1760.h>
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#include <asm/clkdev.h>
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#include <asm/sizes.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <asm/hardware/arm_timer.h>
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#include <mach/clkdev.h>
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#include <mach/motherboard.h>
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#include <plat/timer-sp.h>
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#include "core.h"
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#define V2M_PA_CS0 0x40000000
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#define V2M_PA_CS1 0x44000000
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#define V2M_PA_CS2 0x48000000
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#define V2M_PA_CS3 0x4c000000
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#define V2M_PA_CS7 0x10000000
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static struct map_desc v2m_io_desc[] __initdata = {
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{
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.virtual = __MMIO_P2V(V2M_PA_CS7),
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.pfn = __phys_to_pfn(V2M_PA_CS7),
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.length = SZ_128K,
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.type = MT_DEVICE,
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},
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};
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void __init v2m_map_io(struct map_desc *tile, size_t num)
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{
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iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
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iotable_init(tile, num);
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}
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static void v2m_timer_init(void)
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{
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writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
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writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
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sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
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sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
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}
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struct sys_timer v2m_timer = {
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.init = v2m_timer_init,
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};
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static DEFINE_SPINLOCK(v2m_cfg_lock);
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int v2m_cfg_write(u32 devfn, u32 data)
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{
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/* Configuration interface broken? */
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u32 val;
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printk("%s: writing %08x to %08x\n", __func__, data, devfn);
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devfn |= SYS_CFG_START | SYS_CFG_WRITE;
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spin_lock(&v2m_cfg_lock);
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val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
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writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
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writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
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writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
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do {
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val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
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} while (val == 0);
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spin_unlock(&v2m_cfg_lock);
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return !!(val & SYS_CFG_ERR);
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}
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int v2m_cfg_read(u32 devfn, u32 *data)
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{
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u32 val;
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devfn |= SYS_CFG_START;
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spin_lock(&v2m_cfg_lock);
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writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
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writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
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mb();
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do {
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cpu_relax();
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val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
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} while (val == 0);
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*data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
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spin_unlock(&v2m_cfg_lock);
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return !!(val & SYS_CFG_ERR);
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}
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static struct resource v2m_pcie_i2c_resource = {
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.start = V2M_SERIAL_BUS_PCI,
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.end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device v2m_pcie_i2c_device = {
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.name = "versatile-i2c",
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.id = 0,
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.num_resources = 1,
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.resource = &v2m_pcie_i2c_resource,
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};
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static struct resource v2m_ddc_i2c_resource = {
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.start = V2M_SERIAL_BUS_DVI,
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.end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device v2m_ddc_i2c_device = {
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.name = "versatile-i2c",
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.id = 1,
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.num_resources = 1,
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.resource = &v2m_ddc_i2c_resource,
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};
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static struct resource v2m_eth_resources[] = {
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{
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.start = V2M_LAN9118,
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.end = V2M_LAN9118 + SZ_64K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_V2M_LAN9118,
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.end = IRQ_V2M_LAN9118,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct smsc911x_platform_config v2m_eth_config = {
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.flags = SMSC911X_USE_32BIT,
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.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
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.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
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.phy_interface = PHY_INTERFACE_MODE_MII,
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};
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static struct platform_device v2m_eth_device = {
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.name = "smsc911x",
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.id = -1,
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.resource = v2m_eth_resources,
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.num_resources = ARRAY_SIZE(v2m_eth_resources),
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.dev.platform_data = &v2m_eth_config,
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};
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static struct resource v2m_usb_resources[] = {
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{
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.start = V2M_ISP1761,
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.end = V2M_ISP1761 + SZ_128K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_V2M_ISP1761,
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.end = IRQ_V2M_ISP1761,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct isp1760_platform_data v2m_usb_config = {
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.is_isp1761 = true,
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.bus_width_16 = false,
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.port1_otg = true,
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.analog_oc = false,
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.dack_polarity_high = false,
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.dreq_polarity_high = false,
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};
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static struct platform_device v2m_usb_device = {
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.name = "isp1760",
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.id = -1,
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.resource = v2m_usb_resources,
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.num_resources = ARRAY_SIZE(v2m_usb_resources),
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.dev.platform_data = &v2m_usb_config,
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};
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static int v2m_flash_init(void)
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{
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writel(0, MMIO_P2V(V2M_SYS_FLASH));
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return 0;
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}
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static void v2m_flash_exit(void)
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{
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writel(0, MMIO_P2V(V2M_SYS_FLASH));
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}
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static void v2m_flash_set_vpp(int on)
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{
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writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
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}
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static struct flash_platform_data v2m_flash_data = {
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.map_name = "cfi_probe",
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.width = 4,
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.init = v2m_flash_init,
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.exit = v2m_flash_exit,
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.set_vpp = v2m_flash_set_vpp,
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};
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static struct resource v2m_flash_resources[] = {
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{
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.start = V2M_NOR0,
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.end = V2M_NOR0 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = V2M_NOR1,
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.end = V2M_NOR1 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device v2m_flash_device = {
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.name = "armflash",
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.id = -1,
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.resource = v2m_flash_resources,
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.num_resources = ARRAY_SIZE(v2m_flash_resources),
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.dev.platform_data = &v2m_flash_data,
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};
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static unsigned int v2m_mmci_status(struct device *dev)
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{
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return !(readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0));
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}
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static struct mmci_platform_data v2m_mmci_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.status = v2m_mmci_status,
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};
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static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
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static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
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static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
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static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
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static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
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static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
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static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
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static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
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static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
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static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
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static struct amba_device *v2m_amba_devs[] __initdata = {
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&aaci_device,
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&mmci_device,
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&kmi0_device,
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&kmi1_device,
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&uart0_device,
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&uart1_device,
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&uart2_device,
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&uart3_device,
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&wdt_device,
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&rtc_device,
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};
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static long v2m_osc_round(struct clk *clk, unsigned long rate)
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{
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return rate;
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}
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static int v2m_osc1_set(struct clk *clk, unsigned long rate)
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{
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return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
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}
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static const struct clk_ops osc1_clk_ops = {
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.round = v2m_osc_round,
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.set = v2m_osc1_set,
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};
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static struct clk osc1_clk = {
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.ops = &osc1_clk_ops,
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.rate = 24000000,
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};
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static struct clk osc2_clk = {
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.rate = 24000000,
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};
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static struct clk_lookup v2m_lookups[] = {
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{ /* UART0 */
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.dev_id = "mb:uart0",
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.clk = &osc2_clk,
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}, { /* UART1 */
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.dev_id = "mb:uart1",
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.clk = &osc2_clk,
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}, { /* UART2 */
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.dev_id = "mb:uart2",
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.clk = &osc2_clk,
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}, { /* UART3 */
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.dev_id = "mb:uart3",
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.clk = &osc2_clk,
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}, { /* KMI0 */
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.dev_id = "mb:kmi0",
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.clk = &osc2_clk,
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}, { /* KMI1 */
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.dev_id = "mb:kmi1",
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.clk = &osc2_clk,
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}, { /* MMC0 */
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.dev_id = "mb:mmci",
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.clk = &osc2_clk,
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}, { /* CLCD */
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.dev_id = "mb:clcd",
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.clk = &osc1_clk,
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},
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};
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static void v2m_power_off(void)
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{
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if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
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printk(KERN_EMERG "Unable to shutdown\n");
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}
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static void v2m_restart(char str, const char *cmd)
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{
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if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
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printk(KERN_EMERG "Unable to reboot\n");
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}
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static int __init v2m_init(void)
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{
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int i;
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clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
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platform_device_register(&v2m_pcie_i2c_device);
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platform_device_register(&v2m_ddc_i2c_device);
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platform_device_register(&v2m_flash_device);
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platform_device_register(&v2m_eth_device);
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platform_device_register(&v2m_usb_device);
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for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
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amba_device_register(v2m_amba_devs[i], &iomem_resource);
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pm_power_off = v2m_power_off;
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arm_pm_restart = v2m_restart;
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return 0;
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}
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arch_initcall(v2m_init);
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