omap3 nand: cleanup virtual address usages

This patch removes direct reference of gpmc address from generic nand platform code.
Nand platform code now uses wrapper functions which are implemented in gpmc module.

Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 11 insertions, 46 deletions

diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index e57fb29ff855..722209601927 100644
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -19,8 +19,6 @@
 #include <plat/board.h>
 #include <plat/gpmc.h>
 
-#define WR_RD_PIN_MONITORING    0x00600000
-
 static struct omap_nand_platform_data *gpmc_nand_data;
 
 static struct resource gpmc_nand_resource = {
@@ -71,10 +69,10 @@ static int omap2_nand_gpmc_retime(void)
         t.wr_cycle  = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->wr_cycle);
 
         /* Configure GPMC */
-        gpmc_cs_write_reg(gpmc_nand_data->cs, GPMC_CS_CONFIG1,
-                        GPMC_CONFIG1_DEVICESIZE(gpmc_nand_data->devsize) |
-                        GPMC_CONFIG1_DEVICETYPE_NAND);
-
+        gpmc_cs_configure(gpmc_nand_data->cs,
+                                GPMC_CONFIG_DEV_SIZE, gpmc_nand_data->devsize);
+        gpmc_cs_configure(gpmc_nand_data->cs,
+                        GPMC_CONFIG_DEV_TYPE, GPMC_DEVICETYPE_NAND);
         err = gpmc_cs_set_timings(gpmc_nand_data->cs, &t);
         if (err)
                 return err;
@@ -82,27 +80,13 @@ static int omap2_nand_gpmc_retime(void)
         return 0;
 }
 
-static int gpmc_nand_setup(void)
-{
-        struct device *dev = &gpmc_nand_device.dev;
-
-        /* Set timings in GPMC */
-        if (omap2_nand_gpmc_retime() < 0) {
-                dev_err(dev, "Unable to set gpmc timings\n");
-                return -EINVAL;
-        }
-
-        return 0;
-}
-
 int __init gpmc_nand_init(struct omap_nand_platform_data *_nand_data)
 {
-        unsigned int val;
         int err = 0;
         struct device *dev = &gpmc_nand_device.dev;
 
         gpmc_nand_data = _nand_data;
-        gpmc_nand_data->nand_setup = gpmc_nand_setup;
+        gpmc_nand_data->nand_setup = omap2_nand_gpmc_retime;
         gpmc_nand_device.dev.platform_data = gpmc_nand_data;
 
         err = gpmc_cs_request(gpmc_nand_data->cs, NAND_IO_SIZE,
@@ -112,19 +96,16 @@ int __init gpmc_nand_init(struct omap_nand_platform_data *_nand_data)
                 return err;
         }
 
-        err = gpmc_nand_setup();
+         /* Set timings in GPMC */
+        err = omap2_nand_gpmc_retime();
         if (err < 0) {
-                dev_err(dev, "NAND platform setup failed: %d\n", err);
+                dev_err(dev, "Unable to set gpmc timings: %d\n", err);
                 return err;
         }
 
         /* Enable RD PIN Monitoring Reg */
         if (gpmc_nand_data->dev_ready) {
-                val  = gpmc_cs_read_reg(gpmc_nand_data->cs,
-                                                 GPMC_CS_CONFIG1);
-                val |= WR_RD_PIN_MONITORING;
-                gpmc_cs_write_reg(gpmc_nand_data->cs,
-                                                GPMC_CS_CONFIG1, val);
+                gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_RDY_BSY, 1);
         }
 
         err = platform_device_register(&gpmc_nand_device);
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 1be8f9ae8437..f46933bc9373 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -641,15 +641,6 @@ int gpmc_prefetch_reset(int cs)
 }
 EXPORT_SYMBOL(gpmc_prefetch_reset);
 
-/**
- * gpmc_prefetch_status - reads prefetch status of engine
- */
-int  gpmc_prefetch_status(void)
-{
-        return gpmc_read_reg(GPMC_PREFETCH_STATUS);
-}
-EXPORT_SYMBOL(gpmc_prefetch_status);
-
 static void __init gpmc_mem_init(void)
 {
         int cs;
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
index 561c64f5ab50..9fd99b9e40ab 100644
--- a/arch/arm/plat-omap/include/plat/gpmc.h
+++ b/arch/arm/plat-omap/include/plat/gpmc.h
@@ -25,9 +25,6 @@
 #define GPMC_CS_NAND_ADDRESS    0x20
 #define GPMC_CS_NAND_DATA       0x24
 
-#define GPMC_CONFIG             0x50
-#define GPMC_STATUS             0x54
-
 /* Control Commands */
 #define GPMC_CONFIG_RDY_BSY     0x00000001
 #define GPMC_CONFIG_DEV_SIZE    0x00000002
@@ -66,7 +63,6 @@
 #define GPMC_CONFIG1_DEVICESIZE_16      GPMC_CONFIG1_DEVICESIZE(1)
 #define GPMC_CONFIG1_DEVICETYPE(val)    ((val & 3) << 10)
 #define GPMC_CONFIG1_DEVICETYPE_NOR     GPMC_CONFIG1_DEVICETYPE(0)
-#define GPMC_CONFIG1_DEVICETYPE_NAND    GPMC_CONFIG1_DEVICETYPE(2)
 #define GPMC_CONFIG1_MUXADDDATA         (1 << 9)
 #define GPMC_CONFIG1_TIME_PARA_GRAN     (1 << 4)
 #define GPMC_CONFIG1_FCLK_DIV(val)      (val & 3)
@@ -136,7 +132,6 @@ extern int gpmc_cs_reserved(int cs);
 extern int gpmc_prefetch_enable(int cs, int dma_mode,
                                         unsigned int u32_count, int is_write);
 extern int gpmc_prefetch_reset(int cs);
-extern int gpmc_prefetch_status(void);
 extern void omap3_gpmc_save_context(void);
 extern void omap3_gpmc_restore_context(void);
 extern void gpmc_init(void);
diff --git a/arch/arm/plat-omap/include/plat/nand.h b/arch/arm/plat-omap/include/plat/nand.h
index f8efd5466b1d..6562cd082bb1 100644
--- a/arch/arm/plat-omap/include/plat/nand.h
+++ b/arch/arm/plat-omap/include/plat/nand.h
@@ -21,13 +21,11 @@ struct omap_nand_platform_data {
         int                     (*dev_ready)(struct omap_nand_platform_data *);
         int                     dma_channel;
         unsigned long           phys_base;
-        void __iomem            *gpmc_cs_baseaddr;
-        void __iomem            *gpmc_baseaddr;
         int                     devsize;
 };
 
-/* size (4 KiB) for IO mapping */
-#define NAND_IO_SIZE    SZ_4K
+/* minimum size for IO mapping */
+#define NAND_IO_SIZE    4
 
 #if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
 extern int gpmc_nand_init(struct omap_nand_platform_data *d);