ARM: OMAP2+: Convert NAND to use gpmc_cs_program_settings()

Convert the OMAP2+ NAND code to use the gpmc_cs_program_settings()
function for configuring the various GPMC options instead of directly
programming the CONFIG1 register.

This moves the configuration of some GPMC options outside the
nand_gpmc_retime() because these options should only need to be set once
regardless of whether the gpmc timing is changing dynamically at runtime.
The programming of where the wait-pin is also moved slightly, but this
will not have any impact to existing devices as no boards are currently
setting the dev_ready variable.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>

diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index e50e438..75feb95 100644 (file)
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -74,14 +74,6 @@ static int omap2_nand_gpmc_retime(
        t.cs_wr_off = gpmc_t->cs_wr_off;
        t.wr_cycle = gpmc_t->wr_cycle;
 
-       /* Configure GPMC */
-       if (gpmc_nand_data->devsize == NAND_BUSWIDTH_16)
-               gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_DEV_SIZE, 1);
-       else
-               gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_DEV_SIZE, 0);
-       gpmc_cs_configure(gpmc_nand_data->cs,
-                       GPMC_CONFIG_DEV_TYPE, GPMC_DEVICETYPE_NAND);
-       gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_WP, 0);
        err = gpmc_cs_set_timings(gpmc_nand_data->cs, &t);
        if (err)
                return err;
@@ -115,8 +107,11 @@ int gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data,
                   struct gpmc_timings *gpmc_t)
 {
        int err = 0;
+       struct gpmc_settings s;
        struct device *dev = &gpmc_nand_device.dev;
 
+       memset(&s, 0, sizeof(struct gpmc_settings));
+
        gpmc_nand_device.dev.platform_data = gpmc_nand_data;
 
        err = gpmc_cs_request(gpmc_nand_data->cs, NAND_IO_SIZE,
@@ -141,11 +136,27 @@ int gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data,
                        dev_err(dev, "Unable to set gpmc timings: %d\n", err);
                        return err;
                }
-       }
 
-       /* Enable RD PIN Monitoring Reg */
-       if (gpmc_nand_data->dev_ready) {
-               gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_RDY_BSY, 1);
+               s.device_nand = true;
+
+               /* Enable RD PIN Monitoring Reg */
+               if (gpmc_nand_data->dev_ready) {
+                       s.wait_on_read = true;
+                       s.wait_on_write = true;
+               }
+
+               if (gpmc_nand_data->devsize == NAND_BUSWIDTH_16)
+                       s.device_width = GPMC_DEVWIDTH_16BIT;
+               else
+                       s.device_width = GPMC_DEVWIDTH_8BIT;
+
+               err = gpmc_cs_program_settings(gpmc_nand_data->cs, &s);
+               if (err < 0)
+                       goto out_free_cs;
+
+               err = gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_WP, 0);
+               if (err < 0)
+                       goto out_free_cs;
        }
 
        gpmc_update_nand_reg(&gpmc_nand_data->reg, gpmc_nand_data->cs);