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| author | Petr Cvek <petr.cvek@tul.cz> | 2015-09-28 23:34:39 +0200 |
|---|---|---|
| committer | Robert Jarzmik <robert.jarzmik@free.fr> | 2015-10-14 23:06:58 +0200 |
| commit | fdb902b6fca4c4b72cf8131114bc4e6610b3cc24 (patch) | |
| tree | eb63a2fd78cfd415d9e1398f3716cc4c257e4b2c /arch | |
| parent | ARM: pxa: magician: Fix redundant GPIO request for pxaficp_ir (diff) | |
| download | linux-fdb902b6fca4c4b72cf8131114bc4e6610b3cc24.tar.xz linux-fdb902b6fca4c4b72cf8131114bc4e6610b3cc24.zip | |
ARM: pxa: magician: Fix support for Intel Strata NOR Flash
Old definition for the physmap-flash driver is incomplete:
- Use of an EGPIO without previous request
- Missing the MTD partitions
This patch fixes it. Read functionality was tested on the machine with
board_id 0x3a. Writing was not tested.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-pxa/magician.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c index c24eaa3652d1..51d0ff452478 100644 --- a/arch/arm/mach-pxa/magician.c +++ b/arch/arm/mach-pxa/magician.c @@ -710,20 +710,65 @@ static struct pxaohci_platform_data magician_ohci_info = { * StrataFlash */ +static int magician_flash_init(struct platform_device *pdev) +{ + int ret = gpio_request(EGPIO_MAGICIAN_FLASH_VPP, "flash Vpp enable"); + + if (ret) { + pr_err("Cannot request flash enable GPIO (%i)\n", ret); + return ret; + } + + ret = gpio_direction_output(EGPIO_MAGICIAN_FLASH_VPP, 1); + if (ret) { + pr_err("Cannot set direction for flash enable (%i)\n", ret); + gpio_free(EGPIO_MAGICIAN_FLASH_VPP); + } + + return ret; +} + static void magician_set_vpp(struct platform_device *pdev, int vpp) { gpio_set_value(EGPIO_MAGICIAN_FLASH_VPP, vpp); } +static void magician_flash_exit(struct platform_device *pdev) +{ + gpio_free(EGPIO_MAGICIAN_FLASH_VPP); +} + static struct resource strataflash_resource = { .start = PXA_CS0_PHYS, .end = PXA_CS0_PHYS + SZ_64M - 1, .flags = IORESOURCE_MEM, }; +static struct mtd_partition magician_flash_parts[] = { + { + .name = "Bootloader", + .offset = 0x0, + .size = 0x40000, + .mask_flags = MTD_WRITEABLE, /* EXPERIMENTAL */ + }, + { + .name = "Linux Kernel", + .offset = 0x40000, + .size = MTDPART_SIZ_FULL, + }, +}; + +/* + * physmap-flash driver + */ + static struct physmap_flash_data strataflash_data = { .width = 4, + .init = magician_flash_init, .set_vpp = magician_set_vpp, + .exit = magician_flash_exit, + .parts = magician_flash_parts, + .nr_parts = ARRAY_SIZE(magician_flash_parts), }; static struct platform_device strataflash = { |