diff options
| -rw-r--r-- | arch/mips/ath25/ar5312.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/arch/mips/ath25/ar5312.c b/arch/mips/ath25/ar5312.c index 26942a2c298d..383dd6c38e0a 100644 --- a/arch/mips/ath25/ar5312.c +++ b/arch/mips/ath25/ar5312.c @@ -19,6 +19,8 @@ #include <linux/bitops.h> #include <linux/irqdomain.h> #include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/mtd/physmap.h> #include <linux/reboot.h> #include <asm/bootinfo.h> #include <asm/reboot.h> @@ -160,6 +162,24 @@ void __init ar5312_arch_init_irq(void) ar5312_misc_irq_domain = domain; } +static struct physmap_flash_data ar5312_flash_data = { + .width = 2, +}; + +static struct resource ar5312_flash_resource = { + .start = AR5312_FLASH_BASE, + .end = AR5312_FLASH_BASE + AR5312_FLASH_SIZE - 1, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device ar5312_physmap_flash = { + .name = "physmap-flash", + .id = 0, + .dev.platform_data = &ar5312_flash_data, + .resource = &ar5312_flash_resource, + .num_resources = 1, +}; + static void __init ar5312_flash_init(void) { void __iomem *flashctl_base; @@ -168,12 +188,24 @@ static void __init ar5312_flash_init(void) flashctl_base = ioremap_nocache(AR5312_FLASHCTL_BASE, AR5312_FLASHCTL_SIZE); + ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL0); + ctl &= AR5312_FLASHCTL_MW; + + /* fixup flash width */ + switch (ctl) { + case AR5312_FLASHCTL_MW16: + ar5312_flash_data.width = 2; + break; + case AR5312_FLASHCTL_MW8: + default: + ar5312_flash_data.width = 1; + break; + } + /* * Configure flash bank 0. * Assume 8M window size. Flash will be aliased if it's smaller */ - ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL0); - ctl &= AR5312_FLASHCTL_MW; ctl |= AR5312_FLASHCTL_E | AR5312_FLASHCTL_AC_8M | AR5312_FLASHCTL_RBLE; ctl |= 0x01 << AR5312_FLASHCTL_IDCY_S; ctl |= 0x07 << AR5312_FLASHCTL_WST1_S; @@ -212,6 +244,8 @@ void __init ar5312_init_devices(void) /* Everything else is probably AR5312 or compatible */ else ath25_soc = ATH25_SOC_AR5312; + + platform_device_register(&ar5312_physmap_flash); } static void ar5312_restart(char *command) |