[PATCH 06/14] ARM: OMAP2+: Convert NAND to use gpmc_cs_program_settings()

[jon-hunter@ti.com (Jon Hunter)]

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>
---
 arch/arm/mach-omap2/gpmc-nand.c |   35 +++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index afc1e8c..4bdfea2 100644
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -43,6 +43,10 @@ static struct platform_device gpmc_nand_device = {
 	.resource	= gpmc_nand_resource,
 };
 
+static struct gpmc_settings nand_settings = {
+	.device_nand = true,
+};
+
 static int omap2_nand_gpmc_retime(
 				struct omap_nand_platform_data *gpmc_nand_data,
 				struct gpmc_timings *gpmc_t)
@@ -74,14 +78,6 @@ 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;
@@ -140,11 +136,26 @@ 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);
+		/* Enable RD PIN Monitoring Reg */
+		if (gpmc_nand_data->dev_ready) {
+			nand_settings.wait_on_read = true;
+			nand_settings.wait_on_write = true;
+		}
+
+		if (gpmc_nand_data->devsize == NAND_BUSWIDTH_16)
+			nand_settings.device_width = GPMC_DEVWIDTH_16BIT;
+		else
+			nand_settings.device_width = GPMC_DEVWIDTH_8BIT;
+
+		err = gpmc_cs_program_settings(gpmc_nand_data->cs,
+					       &nand_settings);
+		if (IS_ERR_VALUE(err))
+			goto out_free_cs;
+
+		err = gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_WP, 0);
+		if (IS_ERR_VALUE(err))
+			goto out_free_cs;
 	}
 
 	gpmc_update_nand_reg(&gpmc_nand_data->reg, gpmc_nand_data->cs);
-- 
1.7.10.4