omap2/3/4: Introducing 'gpmc-nand.c' for GPMC specific NAND init
Introducing 'gpmc-nand.c' for GPMC specific NAND init.
For example: GPMC timing parameters and all.
This patch also migrates gpmc related calls from 'nand/omap2.c'
to 'gpmc-nand.c'.
Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 1bb799f..26aec00 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -30,12 +30,8 @@
#define DRIVER_NAME "omap2-nand"
-/* size (4 KiB) for IO mapping */
-#define NAND_IO_SIZE SZ_4K
-
#define NAND_WP_OFF 0
#define NAND_WP_BIT 0x00000010
-#define WR_RD_PIN_MONITORING 0x00600000
#define GPMC_BUF_FULL 0x00000001
#define GPMC_BUF_EMPTY 0x00000000
@@ -882,8 +878,6 @@
struct omap_nand_info *info;
struct omap_nand_platform_data *pdata;
int err;
- unsigned long val;
-
pdata = pdev->dev.platform_data;
if (pdata == NULL) {
@@ -905,28 +899,14 @@
info->gpmc_cs = pdata->cs;
info->gpmc_baseaddr = pdata->gpmc_baseaddr;
info->gpmc_cs_baseaddr = pdata->gpmc_cs_baseaddr;
+ info->phys_base = pdata->phys_base;
info->mtd.priv = &info->nand;
info->mtd.name = dev_name(&pdev->dev);
info->mtd.owner = THIS_MODULE;
- err = gpmc_cs_request(info->gpmc_cs, NAND_IO_SIZE, &info->phys_base);
- if (err < 0) {
- dev_err(&pdev->dev, "Cannot request GPMC CS\n");
- goto out_free_info;
- }
-
- /* Enable RD PIN Monitoring Reg */
- if (pdata->dev_ready) {
- val = gpmc_cs_read_reg(info->gpmc_cs, GPMC_CS_CONFIG1);
- val |= WR_RD_PIN_MONITORING;
- gpmc_cs_write_reg(info->gpmc_cs, GPMC_CS_CONFIG1, val);
- }
-
- val = gpmc_cs_read_reg(info->gpmc_cs, GPMC_CS_CONFIG7);
- val &= ~(0xf << 8);
- val |= (0xc & 0xf) << 8;
- gpmc_cs_write_reg(info->gpmc_cs, GPMC_CS_CONFIG7, val);
+ info->nand.options |= pdata->devsize ? NAND_BUSWIDTH_16 : 0;
+ info->nand.options |= NAND_SKIP_BBTSCAN;
/* NAND write protect off */
omap_nand_wp(&info->mtd, NAND_WP_OFF);
@@ -934,7 +914,7 @@
if (!request_mem_region(info->phys_base, NAND_IO_SIZE,
pdev->dev.driver->name)) {
err = -EBUSY;
- goto out_free_cs;
+ goto out_free_info;
}
info->nand.IO_ADDR_R = ioremap(info->phys_base, NAND_IO_SIZE);
@@ -963,11 +943,6 @@
info->nand.chip_delay = 50;
}
- info->nand.options |= NAND_SKIP_BBTSCAN;
- if ((gpmc_cs_read_reg(info->gpmc_cs, GPMC_CS_CONFIG1) & 0x3000)
- == 0x1000)
- info->nand.options |= NAND_BUSWIDTH_16;
-
if (use_prefetch) {
/* copy the virtual address of nand base for fifo access */
info->nand_pref_fifo_add = info->nand.IO_ADDR_R;
@@ -1043,8 +1018,6 @@
out_release_mem_region:
release_mem_region(info->phys_base, NAND_IO_SIZE);
-out_free_cs:
- gpmc_cs_free(info->gpmc_cs);
out_free_info:
kfree(info);