msm: board-8930: Expand GPIO address space to allow for PM8917
PMIC PM8917 has more GPIOs and MPPs than PM8038. Since the
Linux GPIO address space is determined at compile time for
MSM8930, empty mappings must be added to allow for the
additional PM8917 GPIOs and MPPs. Modify the PM8038 GPIO and MPP
mapping macros to provide the space needed for PM8917 GPIOs and
MPPs.
Change-Id: Ib1e05841ccd7b82d576d8b20a7cc7bd601dd1661
Signed-off-by: David Collins <collinsd@codeaurora.org>
(cherry picked from commit fc7367294dfaf2e4ce2ae446e3de2280a4f4e921)
Signed-off-by: Sudhir Sharma <sudsha@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8930.h b/arch/arm/mach-msm/board-8930.h
index 9f6276c..daded29 100644
--- a/arch/arm/mach-msm/board-8930.h
+++ b/arch/arm/mach-msm/board-8930.h
@@ -17,6 +17,7 @@
#include <linux/regulator/msm-gpio-regulator.h>
#include <linux/mfd/pm8xxx/pm8038.h>
+#include <linux/mfd/pm8xxx/pm8921.h>
#include <linux/i2c.h>
#include <linux/i2c/sx150x.h>
#include <mach/irqs.h>
@@ -37,12 +38,23 @@
#endif
/* Macros assume PMIC GPIOs and MPPs start at 1 */
+/*
+ * PM8917 has more GPIOs and MPPs than PM8038; therefore, use PM8038 sizes at
+ * all times so that PM8038 vs PM8917 can be chosen at runtime. This results in
+ * the Linux GPIO address space being contiguous for PM8917 and discontiguous
+ * for PM8038.
+ */
#define PM8038_GPIO_BASE NR_GPIO_IRQS
#define PM8038_GPIO_PM_TO_SYS(pm_gpio) (pm_gpio - 1 + PM8038_GPIO_BASE)
-#define PM8038_MPP_BASE (PM8038_GPIO_BASE + PM8038_NR_GPIOS)
+#define PM8038_MPP_BASE (PM8038_GPIO_BASE + PM8917_NR_GPIOS)
#define PM8038_MPP_PM_TO_SYS(pm_gpio) (pm_gpio - 1 + PM8038_MPP_BASE)
#define PM8038_IRQ_BASE (NR_MSM_IRQS + NR_GPIO_IRQS)
+/* These PM8917 alias macros are used to provide context in board files. */
+#define PM8917_GPIO_PM_TO_SYS(pm_gpio) PM8038_GPIO_PM_TO_SYS(pm_gpio)
+#define PM8917_MPP_PM_TO_SYS(pm_gpio) PM8038_MPP_PM_TO_SYS(pm_gpio)
+#define PM8917_IRQ_BASE PM8038_IRQ_BASE
+
/*
* TODO: When physical 8930/PM8038 hardware becomes
* available, replace this block with 8930/pm8038 regulator
@@ -84,7 +96,7 @@
#if defined(CONFIG_GPIO_SX150X) || defined(CONFIG_GPIO_SX150X_MODULE)
enum {
GPIO_EXPANDER_IRQ_BASE = (PM8038_IRQ_BASE + PM8038_NR_IRQS),
- GPIO_EXPANDER_GPIO_BASE = (PM8038_MPP_BASE + PM8038_NR_MPPS),
+ GPIO_EXPANDER_GPIO_BASE = (PM8038_MPP_BASE + PM8917_NR_MPPS),
/* CAM Expander */
GPIO_CAM_EXPANDER_BASE = GPIO_EXPANDER_GPIO_BASE,
GPIO_CAM_GP_STROBE_READY = GPIO_CAM_EXPANDER_BASE,