Helper for reconfiguring CS. This helps if a
peripheral needs to reconfigure GPMC settings
different from the one which was configured
during probe.
Signed-off-by: Afzal Mohammed <afzal@xxxxxx>
---
arch/arm/mach-omap2/gpmc.c | 32 ++++++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/gpmc.h | 2 ++
2 files changed, 34 insertions(+)
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index ac66267..3729136 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1420,6 +1420,38 @@ struct platform_device *gpmc_create_device(struct gpmc_peripheral *p)
return p->pdev;
}
+static int gpmc_match_device(char *name, int id)
+{
+ int i;
+ struct gpmc_peripheral *g_per = gpmc_peripheral;
+
+ for (i = 0; i < gpmc_num_peripheral; i++, g_per++)
+ if (!strcmp(g_per->name, name) && g_per->id == id)
+ return i;
+
+ return -ENOENT;
+}
+
+int gpmc_cs_reconfigure(char *name, int id, struct gpmc_cs_data *c)
+{
+ int i;
+
+ i = gpmc_match_device(name, id);
+ if (IS_ERR_VALUE(i)) {
+ dev_err(gpmc_dev, "no device %s.%d to configure\n", name, id);
+ return i;
+ }
+
+ if (IS_ERR_VALUE(gpmc_setup_cs_config_timing(gpmc_peripheral + i, c))) {
+ dev_err(gpmc_dev, "error: configure device %s.%d\n", name, id);
+ return i;
+ }
+
+ return gpmc_setup_waitpin(gpmc_peripheral + i);
+
+}
+EXPORT_SYMBOL_GPL(gpmc_cs_reconfigure);
+
static __devinit int gpmc_probe(struct platform_device *pdev)
{
u32 l;
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
index 1185490..7909867 100644
--- a/arch/arm/plat-omap/include/plat/gpmc.h
+++ b/arch/arm/plat-omap/include/plat/gpmc.h
@@ -248,6 +248,8 @@ extern int gpmc_cs_configure(int cs, int cmd, int wval);
extern int gpmc_nand_read(int cs, int cmd);
extern int gpmc_nand_write(int cs, int cmd, int wval);
+extern int gpmc_cs_reconfigure(char *name, int id, struct gpmc_cs_data *c);
+
int gpmc_enable_hwecc(int cs, int mode, int dev_width, int ecc_size);
int gpmc_calculate_ecc(int cs, const u_char *dat, u_char *ecc_code);
--
1.7.10.2
--
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