mirror of
https://github.com/torvalds/linux.git
synced 2024-12-12 06:02:38 +00:00
74bc80931c
The MMC card detection sense has become really confused with negations at various levels, leading to some platforms not detecting inserted cards. Fix this by converting everything to positive logic throughout, thereby getting rid of these negations. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
362 lines
7.8 KiB
C
362 lines
7.8 KiB
C
/*
|
|
* Versatile Express V2M Motherboard Support
|
|
*/
|
|
#include <linux/device.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/amba/mmci.h>
|
|
#include <linux/io.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/smsc911x.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/sysdev.h>
|
|
#include <linux/usb/isp1760.h>
|
|
|
|
#include <asm/clkdev.h>
|
|
#include <asm/sizes.h>
|
|
#include <asm/mach/flash.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
#include <asm/hardware/arm_timer.h>
|
|
|
|
#include <mach/clkdev.h>
|
|
#include <mach/motherboard.h>
|
|
|
|
#include <plat/timer-sp.h>
|
|
|
|
#include "core.h"
|
|
|
|
#define V2M_PA_CS0 0x40000000
|
|
#define V2M_PA_CS1 0x44000000
|
|
#define V2M_PA_CS2 0x48000000
|
|
#define V2M_PA_CS3 0x4c000000
|
|
#define V2M_PA_CS7 0x10000000
|
|
|
|
static struct map_desc v2m_io_desc[] __initdata = {
|
|
{
|
|
.virtual = __MMIO_P2V(V2M_PA_CS7),
|
|
.pfn = __phys_to_pfn(V2M_PA_CS7),
|
|
.length = SZ_128K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
void __init v2m_map_io(struct map_desc *tile, size_t num)
|
|
{
|
|
iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
|
|
iotable_init(tile, num);
|
|
}
|
|
|
|
|
|
static void v2m_timer_init(void)
|
|
{
|
|
writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
|
|
writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
|
|
|
|
sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
|
|
sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
|
|
}
|
|
|
|
struct sys_timer v2m_timer = {
|
|
.init = v2m_timer_init,
|
|
};
|
|
|
|
|
|
static DEFINE_SPINLOCK(v2m_cfg_lock);
|
|
|
|
int v2m_cfg_write(u32 devfn, u32 data)
|
|
{
|
|
/* Configuration interface broken? */
|
|
u32 val;
|
|
|
|
printk("%s: writing %08x to %08x\n", __func__, data, devfn);
|
|
|
|
devfn |= SYS_CFG_START | SYS_CFG_WRITE;
|
|
|
|
spin_lock(&v2m_cfg_lock);
|
|
val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
|
|
writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
|
|
|
|
writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
|
|
writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
|
|
|
|
do {
|
|
val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
|
|
} while (val == 0);
|
|
spin_unlock(&v2m_cfg_lock);
|
|
|
|
return !!(val & SYS_CFG_ERR);
|
|
}
|
|
|
|
int v2m_cfg_read(u32 devfn, u32 *data)
|
|
{
|
|
u32 val;
|
|
|
|
devfn |= SYS_CFG_START;
|
|
|
|
spin_lock(&v2m_cfg_lock);
|
|
writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
|
|
writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
|
|
|
|
mb();
|
|
|
|
do {
|
|
cpu_relax();
|
|
val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
|
|
} while (val == 0);
|
|
|
|
*data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
|
|
spin_unlock(&v2m_cfg_lock);
|
|
|
|
return !!(val & SYS_CFG_ERR);
|
|
}
|
|
|
|
|
|
static struct resource v2m_pcie_i2c_resource = {
|
|
.start = V2M_SERIAL_BUS_PCI,
|
|
.end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device v2m_pcie_i2c_device = {
|
|
.name = "versatile-i2c",
|
|
.id = 0,
|
|
.num_resources = 1,
|
|
.resource = &v2m_pcie_i2c_resource,
|
|
};
|
|
|
|
static struct resource v2m_ddc_i2c_resource = {
|
|
.start = V2M_SERIAL_BUS_DVI,
|
|
.end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device v2m_ddc_i2c_device = {
|
|
.name = "versatile-i2c",
|
|
.id = 1,
|
|
.num_resources = 1,
|
|
.resource = &v2m_ddc_i2c_resource,
|
|
};
|
|
|
|
static struct resource v2m_eth_resources[] = {
|
|
{
|
|
.start = V2M_LAN9118,
|
|
.end = V2M_LAN9118 + SZ_64K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
}, {
|
|
.start = IRQ_V2M_LAN9118,
|
|
.end = IRQ_V2M_LAN9118,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct smsc911x_platform_config v2m_eth_config = {
|
|
.flags = SMSC911X_USE_32BIT,
|
|
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
|
|
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
|
|
.phy_interface = PHY_INTERFACE_MODE_MII,
|
|
};
|
|
|
|
static struct platform_device v2m_eth_device = {
|
|
.name = "smsc911x",
|
|
.id = -1,
|
|
.resource = v2m_eth_resources,
|
|
.num_resources = ARRAY_SIZE(v2m_eth_resources),
|
|
.dev.platform_data = &v2m_eth_config,
|
|
};
|
|
|
|
static struct resource v2m_usb_resources[] = {
|
|
{
|
|
.start = V2M_ISP1761,
|
|
.end = V2M_ISP1761 + SZ_128K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
}, {
|
|
.start = IRQ_V2M_ISP1761,
|
|
.end = IRQ_V2M_ISP1761,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct isp1760_platform_data v2m_usb_config = {
|
|
.is_isp1761 = true,
|
|
.bus_width_16 = false,
|
|
.port1_otg = true,
|
|
.analog_oc = false,
|
|
.dack_polarity_high = false,
|
|
.dreq_polarity_high = false,
|
|
};
|
|
|
|
static struct platform_device v2m_usb_device = {
|
|
.name = "isp1760",
|
|
.id = -1,
|
|
.resource = v2m_usb_resources,
|
|
.num_resources = ARRAY_SIZE(v2m_usb_resources),
|
|
.dev.platform_data = &v2m_usb_config,
|
|
};
|
|
|
|
static int v2m_flash_init(void)
|
|
{
|
|
writel(0, MMIO_P2V(V2M_SYS_FLASH));
|
|
return 0;
|
|
}
|
|
|
|
static void v2m_flash_exit(void)
|
|
{
|
|
writel(0, MMIO_P2V(V2M_SYS_FLASH));
|
|
}
|
|
|
|
static void v2m_flash_set_vpp(int on)
|
|
{
|
|
writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
|
|
}
|
|
|
|
static struct flash_platform_data v2m_flash_data = {
|
|
.map_name = "cfi_probe",
|
|
.width = 4,
|
|
.init = v2m_flash_init,
|
|
.exit = v2m_flash_exit,
|
|
.set_vpp = v2m_flash_set_vpp,
|
|
};
|
|
|
|
static struct resource v2m_flash_resources[] = {
|
|
{
|
|
.start = V2M_NOR0,
|
|
.end = V2M_NOR0 + SZ_64M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
}, {
|
|
.start = V2M_NOR1,
|
|
.end = V2M_NOR1 + SZ_64M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct platform_device v2m_flash_device = {
|
|
.name = "armflash",
|
|
.id = -1,
|
|
.resource = v2m_flash_resources,
|
|
.num_resources = ARRAY_SIZE(v2m_flash_resources),
|
|
.dev.platform_data = &v2m_flash_data,
|
|
};
|
|
|
|
|
|
static unsigned int v2m_mmci_status(struct device *dev)
|
|
{
|
|
return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
|
|
}
|
|
|
|
static struct mmci_platform_data v2m_mmci_data = {
|
|
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
|
|
.status = v2m_mmci_status,
|
|
};
|
|
|
|
static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
|
|
static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
|
|
static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
|
|
static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
|
|
static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
|
|
static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
|
|
static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
|
|
static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
|
|
static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
|
|
static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
|
|
|
|
static struct amba_device *v2m_amba_devs[] __initdata = {
|
|
&aaci_device,
|
|
&mmci_device,
|
|
&kmi0_device,
|
|
&kmi1_device,
|
|
&uart0_device,
|
|
&uart1_device,
|
|
&uart2_device,
|
|
&uart3_device,
|
|
&wdt_device,
|
|
&rtc_device,
|
|
};
|
|
|
|
|
|
static long v2m_osc_round(struct clk *clk, unsigned long rate)
|
|
{
|
|
return rate;
|
|
}
|
|
|
|
static int v2m_osc1_set(struct clk *clk, unsigned long rate)
|
|
{
|
|
return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
|
|
}
|
|
|
|
static const struct clk_ops osc1_clk_ops = {
|
|
.round = v2m_osc_round,
|
|
.set = v2m_osc1_set,
|
|
};
|
|
|
|
static struct clk osc1_clk = {
|
|
.ops = &osc1_clk_ops,
|
|
.rate = 24000000,
|
|
};
|
|
|
|
static struct clk osc2_clk = {
|
|
.rate = 24000000,
|
|
};
|
|
|
|
static struct clk_lookup v2m_lookups[] = {
|
|
{ /* UART0 */
|
|
.dev_id = "mb:uart0",
|
|
.clk = &osc2_clk,
|
|
}, { /* UART1 */
|
|
.dev_id = "mb:uart1",
|
|
.clk = &osc2_clk,
|
|
}, { /* UART2 */
|
|
.dev_id = "mb:uart2",
|
|
.clk = &osc2_clk,
|
|
}, { /* UART3 */
|
|
.dev_id = "mb:uart3",
|
|
.clk = &osc2_clk,
|
|
}, { /* KMI0 */
|
|
.dev_id = "mb:kmi0",
|
|
.clk = &osc2_clk,
|
|
}, { /* KMI1 */
|
|
.dev_id = "mb:kmi1",
|
|
.clk = &osc2_clk,
|
|
}, { /* MMC0 */
|
|
.dev_id = "mb:mmci",
|
|
.clk = &osc2_clk,
|
|
}, { /* CLCD */
|
|
.dev_id = "mb:clcd",
|
|
.clk = &osc1_clk,
|
|
},
|
|
};
|
|
|
|
static void v2m_power_off(void)
|
|
{
|
|
if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
|
|
printk(KERN_EMERG "Unable to shutdown\n");
|
|
}
|
|
|
|
static void v2m_restart(char str, const char *cmd)
|
|
{
|
|
if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
|
|
printk(KERN_EMERG "Unable to reboot\n");
|
|
}
|
|
|
|
static int __init v2m_init(void)
|
|
{
|
|
int i;
|
|
|
|
clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
|
|
|
|
platform_device_register(&v2m_pcie_i2c_device);
|
|
platform_device_register(&v2m_ddc_i2c_device);
|
|
platform_device_register(&v2m_flash_device);
|
|
platform_device_register(&v2m_eth_device);
|
|
platform_device_register(&v2m_usb_device);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
|
|
amba_device_register(v2m_amba_devs[i], &iomem_resource);
|
|
|
|
pm_power_off = v2m_power_off;
|
|
arm_pm_restart = v2m_restart;
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(v2m_init);
|