msm: gpiomux: Add msm_tlmm_misc_reg_write API
Provide an API for drivers to write into miscellaneous registers
in the MSM TLMM region.
Change-Id: I366ede0b8c49192776171e5d28a23ee9b870c5f6
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
diff --git a/arch/arm/mach-msm/gpiomux.c b/arch/arm/mach-msm/gpiomux.c
index 4714210..1f7d56a 100644
--- a/arch/arm/mach-msm/gpiomux.c
+++ b/arch/arm/mach-msm/gpiomux.c
@@ -13,7 +13,9 @@
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
+#include <linux/io.h>
#include <mach/gpiomux.h>
+#include <mach/msm_iomap.h>
struct msm_gpiomux_rec {
struct gpiomux_setting *sets[GPIOMUX_NSETTINGS];
@@ -121,6 +123,13 @@
}
EXPORT_SYMBOL(msm_gpiomux_put);
+void msm_tlmm_misc_reg_write(enum msm_tlmm_misc_reg misc_reg, int val)
+{
+ writel_relaxed(val, MSM_TLMM_BASE + misc_reg);
+ /* ensure the write completes before returning */
+ mb();
+}
+
int msm_gpiomux_init(size_t ngpio)
{
if (!ngpio)
diff --git a/arch/arm/mach-msm/include/mach/gpiomux.h b/arch/arm/mach-msm/include/mach/gpiomux.h
index 5ffcabb..9aae3fb 100644
--- a/arch/arm/mach-msm/include/mach/gpiomux.h
+++ b/arch/arm/mach-msm/include/mach/gpiomux.h
@@ -109,6 +109,14 @@
size_t ncfg;
};
+/* Provide an enum and an API to write to misc TLMM registers */
+enum msm_tlmm_misc_reg {
+ TLMM_ETM_MODE_REG = 0x2014,
+ TLMM_SDC2_HDRV_PULL_CTL = 0x2048,
+};
+
+void msm_tlmm_misc_reg_write(enum msm_tlmm_misc_reg misc_reg, int val);
+
#ifdef CONFIG_MSM_GPIOMUX
/* Before using gpiomux, initialize the subsystem by telling it how many