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>

diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index c24eaa3..51d0ff4 100644 (file)
--- 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 = {