input: ti_am33x_tsc: Step enable bits made configurable

Current code has hard coded value written to
step enable bits. Now the bits are updated based
on how many steps are needed to be configured got
from platform data.

The user needs to take care not to exceed
the count more than 16. While using ADC and TSC
one should take care to set this parameter correctly.

Sebastian added the common lock and moved the code, that manipulates the
steps, from into the mfd module.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
index 8114e4e8b91b..4258627d076a 100644
--- a/include/linux/mfd/ti_am335x_tscadc.h
+++ b/include/linux/mfd/ti_am335x_tscadc.h
@@ -46,8 +46,6 @@
 /* Step Enable */
 #define STEPENB_MASK            (0x1FFFF << 0)
 #define STEPENB(val)            ((val) << 0)
-#define STPENB_STEPENB          STEPENB(0x1FFFF)
-#define STPENB_STEPENB_TC       STEPENB(0x1FFF)
 
 /* IRQ enable */
 #define IRQENB_HW_PEN           BIT(0)
@@ -141,6 +139,8 @@ struct ti_tscadc_dev {
         void __iomem *tscadc_base;
         int irq;
         struct mfd_cell cells[TSCADC_CELLS];
+        u32 reg_se_cache;
+        spinlock_t reg_lock;
 
         /* tsc device */
         struct titsc *tsc;
@@ -156,4 +156,8 @@ static inline struct ti_tscadc_dev *ti_tscadc_dev_get(struct platform_device *p)
         return *tscadc_dev;
 }
 
+void am335x_tsc_se_update(struct ti_tscadc_dev *tsadc);
+void am335x_tsc_se_set(struct ti_tscadc_dev *tsadc, u32 val);
+void am335x_tsc_se_clr(struct ti_tscadc_dev *tsadc, u32 val);
+
 #endif