armv7: make gpmc_cfg const

Signed-off-by: NLadislav Michl <ladis@linux-mips.org>
[trini: Adapt am33xx, duovero, omap_zoom1]
Signed-off-by: NTom Rini <trini@konsulko.com>
Signed-off-by: NTom Rini <trini@konsulko.com>

arch/arm/cpu/armv7/omap-common/mem-common.c

@@ -21,7 +21,7 @@
 #include <command.h>
 #include <linux/mtd/omap_gpmc.h>
 
-struct gpmc *gpmc_cfg;
+const struct gpmc *gpmc_cfg = (struct gpmc *)GPMC_BASE;
 
 #if defined(CONFIG_OMAP34XX)
 /********************************************************
@@ -50,8 +50,8 @@ u32 mem_ok(u32 cs)
 }
 #endif
 
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
-			u32 size)
+void enable_gpmc_cs_config(const u32 *gpmc_config, const struct gpmc_cs *cs,
+				u32 base, u32 size)
 {
 	writel(0, &cs->config7);
 	sdelay(1000);
@@ -75,8 +75,6 @@ void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
  *****************************************************/
 void gpmc_init(void)
 {
-	/* putting a blanket check on GPMC based on ZeBu for now */
-	gpmc_cfg = (struct gpmc *)GPMC_BASE;
 #if defined(CONFIG_NOR)
 /* configure GPMC for NOR */
 	const u32 gpmc_regs[GPMC_MAX_REG] = {	STNOR_GPMC_CONFIG1,

arch/arm/include/asm/arch-am33xx/sys_proto.h

@@ -25,9 +25,8 @@ void ddr_pll_config(unsigned int ddrpll_M);
 
 void sdelay(unsigned long);
 
-struct gpmc_cs;
 void gpmc_init(void);
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
+void enable_gpmc_cs_config(const u32 *gpmc_config, const struct gpmc_cs *cs, u32 base,
 			u32 size);
 void omap_nand_switch_ecc(uint32_t, uint32_t);
 

arch/arm/include/asm/arch-omap3/sys_proto.h

@@ -43,8 +43,8 @@ void get_board_mem_timings(struct board_sdrc_timings *timings);
 int identify_nand_chip(int *mfr, int *id);
 void emif4_init(void);
 void gpmc_init(void);
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
-			u32 size);
+void enable_gpmc_cs_config(const u32 *gpmc_config, const struct gpmc_cs *cs,
+				u32 base, u32 size);
 
 void watchdog_init(void);
 void set_muxconf_regs(void);

board/gumstix/duovero/duovero.c

@@ -128,7 +128,7 @@ void board_mmc_power_init(void)
 #define GPMC_BASEADDR_MASK	0x3F
 #define GPMC_CS_ENABLE		0x1
 
-static void enable_gpmc_net_config(const u32 *gpmc_config, struct gpmc_cs *cs,
+static void enable_gpmc_net_config(const u32 *gpmc_config, const struct gpmc_cs *cs,
 		u32 base, u32 size)
 {
 	writel(0, &cs->config7);

board/logicpd/zoom1/zoom1.c

@@ -19,6 +19,7 @@
 #include <ns16550.h>
 #include <netdev.h>
 #include <twl4030.h>
+#include <linux/mtd/omap_gpmc.h>
 #include <asm/io.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/mmc_host_def.h>
@@ -29,10 +30,10 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-/* gpmc_cfg is initialized by gpmc_init and we use it here */
-extern struct gpmc *gpmc_cfg;
-
-/* GPMC definitions for Ethenet Controller LAN9211 */
+/*
+ * gpmc_cfg is initialized by gpmc_init and we use it here.
+ * GPMC definitions for Ethenet Controller LAN9211
+ */
 static const u32 gpmc_lab_enet[] = {
 	ZOOM1_ENET_GPMC_CONF1,
 	ZOOM1_ENET_GPMC_CONF2,

drivers/mtd/nand/omap_gpmc.c

@@ -264,7 +264,8 @@ static int omap_calculate_ecc(struct mtd_info *mtd, const uint8_t *dat,
 {
 	struct nand_chip *chip = mtd_to_nand(mtd);
 	struct omap_nand_info *info = nand_get_controller_data(chip);
-	uint32_t *ptr, val = 0;
+	const uint32_t *ptr;
+	uint32_t val = 0;
 	int8_t i = 0, j;
 
 	switch (info->ecc_scheme) {

include/linux/mtd/omap_gpmc.h

@@ -92,6 +92,6 @@ struct gpmc {
 };
 
 /* Used for board specific gpmc initialization */
-extern struct gpmc *gpmc_cfg;
+extern const struct gpmc *gpmc_cfg;
 
 #endif /* __ASM_OMAP_GPMC_H */