staging: most: add __iomem for io_base and registers

This removes a few Sparse warnings.
Signed-off-by: Hugo Camboulive <hugo.camboulive@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/hdm-dim2/dim2_hal.c

@@ -84,7 +84,7 @@ static inline bool dim_on_error(u8 error_id, const char *error_message)
 struct lld_global_vars_t {
 	bool dim_is_initialized;
 	bool mcm_is_initialized;
-	struct dim2_regs *dim2; /* DIM2 core base address */
+	struct dim2_regs __iomem *dim2; /* DIM2 core base address */
 	u32 dbr_map[DBR_MAP_SIZE];
 };
 
@@ -650,7 +650,7 @@ static bool channel_detach_buffers(struct dim_channel *ch, u16 buffers_number)
 /* -------------------------------------------------------------------------- */
 /* API */
 
-u8 dim_startup(void *dim_base_address, u32 mlb_clock)
+u8 dim_startup(struct dim2_regs __iomem *dim_base_address, u32 mlb_clock)
 {
 	g.dim_is_initialized = false;
 

drivers/staging/most/hdm-dim2/dim2_hal.h

@@ -16,6 +16,7 @@
 #define _DIM2_HAL_H
 
 #include <linux/types.h>
+#include "dim2_reg.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -65,7 +66,7 @@ struct dim_channel {
 	u16 done_sw_buffers_number; /*< Done software buffers number. */
 };
 
-u8 dim_startup(void *dim_base_address, u32 mlb_clock);
+u8 dim_startup(struct dim2_regs __iomem *dim_base_address, u32 mlb_clock);
 
 void dim_shutdown(void);
 
@@ -103,9 +104,9 @@ bool dim_enqueue_buffer(struct dim_channel *ch, u32 buffer_addr,
 
 bool dim_detach_buffers(struct dim_channel *ch, u16 buffers_number);
 
-u32 dimcb_io_read(u32 *ptr32);
+u32 dimcb_io_read(u32 __iomem *ptr32);
 
-void dimcb_io_write(u32 *ptr32, u32 value);
+void dimcb_io_write(u32 __iomem *ptr32, u32 value);
 
 void dimcb_on_error(u8 error_id, const char *error_message);
 

drivers/staging/most/hdm-dim2/dim2_hdm.c

@@ -99,7 +99,7 @@ struct dim2_hdm {
 	struct most_channel_capability capabilities[DMA_CHANNELS];
 	struct most_interface most_iface;
 	char name[16 + sizeof "dim2-"];
-	void *io_base;
+	void __iomem *io_base;
 	unsigned int irq_ahb0;
 	int clk_speed;
 	struct task_struct *netinfo_task;
@@ -138,7 +138,7 @@ bool dim2_sysfs_get_state_cb(void)
  * dimcb_io_read - callback from HAL to read an I/O register
  * @ptr32: register address
  */
-u32 dimcb_io_read(u32 *ptr32)
+u32 dimcb_io_read(u32 __iomem *ptr32)
 {
 	return readl(ptr32);
 }
@@ -148,7 +148,7 @@ u32 dimcb_io_read(u32 *ptr32)
  * @ptr32: register address
  * @value: value to write
  */
-void dimcb_io_write(u32 *ptr32, u32 value)
+void dimcb_io_write(u32 __iomem *ptr32, u32 value)
 {
 	writel(value, ptr32);
 }

drivers/staging/most/hdm-dim2/dim2_hdm.h

@@ -18,7 +18,7 @@ struct device;
 
 /* platform dependent data for dim2 interface */
 struct dim2_platform_data {
-	int (*init)(struct dim2_platform_data *pd, void *io_base,
+	int (*init)(struct dim2_platform_data *pd, void __iomem *io_base,
 		    int clk_speed);
 	void (*destroy)(struct dim2_platform_data *pd);
 	void *priv;