OMAP: OneNAND: determine frequency in one place

OneNAND frequency is determined when calculating
GPMC timings.  Return that value instead of determining it
again in the OMAP OneNAND driver.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

3 files changed, 12 insertions, 28 deletions

diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
index 3a4307b8f7cf..46786a606e90 100644
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -123,7 +123,7 @@ static void set_onenand_cfg(void __iomem *onenand_base, int latency,
 
 static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
                                         void __iomem *onenand_base,
-                                        int freq)
+                                        int *freq_ptr)
 {
         struct gpmc_timings t;
         const int t_cer  = 15;
@@ -136,7 +136,7 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
         int tick_ns, div, fclk_offset_ns, fclk_offset, gpmc_clk_ns, latency;
         int first_time = 0, hf = 0, vhf = 0, sync_read = 0, sync_write = 0;
         int err, ticks_cez;
-        int cs = cfg->cs;
+        int cs = cfg->cs, freq = *freq_ptr;
         u32 reg;
 
         if (cfg->flags & ONENAND_SYNC_READ) {
@@ -330,16 +330,18 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
 
         set_onenand_cfg(onenand_base, latency, sync_read, sync_write, hf, vhf);
 
+        *freq_ptr = freq;
+
         return 0;
 }
 
-static int gpmc_onenand_setup(void __iomem *onenand_base, int freq)
+static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr)
 {
         struct device *dev = &gpmc_onenand_device.dev;
 
         /* Set sync timings in GPMC */
         if (omap2_onenand_set_sync_mode(gpmc_onenand_data, onenand_base,
-                        freq) < 0) {
+                        freq_ptr) < 0) {
                 dev_err(dev, "Unable to set synchronous mode\n");
                 return -EINVAL;
         }
diff --git a/arch/arm/plat-omap/include/plat/onenand.h b/arch/arm/plat-omap/include/plat/onenand.h
index affe87e9ece7..86118dc3f19a 100644
--- a/arch/arm/plat-omap/include/plat/onenand.h
+++ b/arch/arm/plat-omap/include/plat/onenand.h
@@ -20,7 +20,7 @@ struct omap_onenand_platform_data {
         int                     gpio_irq;
         struct mtd_partition    *parts;
         int                     nr_parts;
-        int                     (*onenand_setup)(void __iomem *, int freq);
+        int                     (*onenand_setup)(void __iomem *, int *freq_ptr);
         int                     dma_channel;
         u8                      flags;
         u8                      regulator_can_sleep;
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index ac31f461cc1c..3e1bb9568823 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -63,7 +63,7 @@ struct omap2_onenand {
         struct completion dma_done;
         int dma_channel;
         int freq;
-        int (*setup)(void __iomem *base, int freq);
+        int (*setup)(void __iomem *base, int *freq_ptr);
         struct regulator *regulator;
 };
 
@@ -581,7 +581,7 @@ static int __adjust_timing(struct device *dev, void *data)
 
         /* DMA is not in use so this is all that is needed */
         /* Revisit for OMAP3! */
-        ret = c->setup(c->onenand.base, c->freq);
+        ret = c->setup(c->onenand.base, &c->freq);
 
         return ret;
 }
@@ -673,7 +673,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
         }
 
         if (pdata->onenand_setup != NULL) {
-                r = pdata->onenand_setup(c->onenand.base, c->freq);
+                r = pdata->onenand_setup(c->onenand.base, &c->freq);
                 if (r < 0) {
                         dev_err(&pdev->dev, "Onenand platform setup failed: "
                                 "%d\n", r);
@@ -718,8 +718,8 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
         }
 
         dev_info(&pdev->dev, "initializing on CS%d, phys base 0x%08lx, virtual "
-                 "base %p\n", c->gpmc_cs, c->phys_base,
-                 c->onenand.base);
+                 "base %p, freq %d MHz\n", c->gpmc_cs, c->phys_base,
+                 c->onenand.base, c->freq);
 
         c->pdev = pdev;
         c->mtd.name = dev_name(&pdev->dev);
@@ -754,24 +754,6 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
         if ((r = onenand_scan(&c->mtd, 1)) < 0)
                 goto err_release_regulator;
 
-        switch ((c->onenand.version_id >> 4) & 0xf) {
-        case 0:
-                c->freq = 40;
-                break;
-        case 1:
-                c->freq = 54;
-                break;
-        case 2:
-                c->freq = 66;
-                break;
-        case 3:
-                c->freq = 83;
-                break;
-        case 4:
-                c->freq = 104;
-                break;
-        }
-
 #ifdef CONFIG_MTD_PARTITIONS
         r = parse_mtd_partitions(&c->mtd, part_probes, &c->parts, 0);
         if (r > 0)