ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a map_info

The set_vpp() method provided by physmap passes a map_info back to
the platform code, which has little relevance as far as the platform
is concerned (this parameter is completely unused).

Instead, pass the platform_device, which can be used in the pismo
driver to retrieve some important information in a nicer way, instead
of the hack that was in place.

The empty set_vpp function in board-at572d940hf_ek.c is left untouched,
as the board/SoC is scheduled for removal.

Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-integrator/integrator_ap.c

@@ -263,7 +263,7 @@ static void ap_flash_exit(struct platform_device *dev)
 	}
 }
 
-static void ap_flash_set_vpp(struct map_info *map, int on)
+static void ap_flash_set_vpp(struct platform_device *pdev, int on)
 {
 	void __iomem *reg = on ? SC_CTRLS : SC_CTRLC;
 

arch/arm/mach-integrator/integrator_cp.c

@@ -259,7 +259,7 @@ static void intcp_flash_exit(struct platform_device *dev)
 	writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
 }
 
-static void intcp_flash_set_vpp(struct map_info *map, int on)
+static void intcp_flash_set_vpp(struct platform_device *pdev, int on)
 {
 	u32 val;
 

arch/arm/mach-omap1/flash.c

@@ -13,7 +13,7 @@
 #include <plat/tc.h>
 #include <plat/flash.h>
 
-void omap1_set_vpp(struct map_info *map, int enable)
+void omap1_set_vpp(struct platform_device *pdev, int enable)
 {
 	static int count;
 	u32 l;

arch/arm/mach-pxa/hx4700.c

@@ -735,7 +735,7 @@ static struct platform_device bq24022 = {
  * StrataFlash
  */
 
-static void hx4700_set_vpp(struct map_info *map, int vpp)
+static void hx4700_set_vpp(struct platform_device *pdev, int vpp)
 {
 	gpio_set_value(GPIO91_HX4700_FLASH_VPEN, vpp);
 }

arch/arm/mach-pxa/magician.c

@@ -662,7 +662,7 @@ static struct pxaohci_platform_data magician_ohci_info = {
  * StrataFlash
  */
 
-static void magician_set_vpp(struct map_info *map, int vpp)
+static void magician_set_vpp(struct platform_device *pdev, int vpp)
 {
 	gpio_set_value(EGPIO_MAGICIAN_FLASH_VPP, vpp);
 }

arch/arm/mach-realview/core.c

@@ -77,7 +77,7 @@ void __init realview_adjust_zones(unsigned long *size, unsigned long *hole)
 
 #define REALVIEW_FLASHCTRL    (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
 
-static void realview_flash_set_vpp(struct map_info *map, int on)
+static void realview_flash_set_vpp(struct platform_device *pdev, int on)
 {
 	u32 val;
 

arch/arm/mach-s3c2410/nor-simtec.c

@@ -32,7 +32,7 @@
 
 #include "nor-simtec.h"
 
-static void simtec_nor_vpp(struct map_info *map, int vpp)
+static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
 {
 	unsigned int val;
 	unsigned long flags;

arch/arm/mach-versatile/core.c

@@ -190,7 +190,7 @@ void __init versatile_map_io(void)
 
 #define VERSATILE_FLASHCTRL    (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
 
-static void versatile_flash_set_vpp(struct map_info *map, int on)
+static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
 {
 	u32 val;
 

arch/arm/mach-vexpress/v2m.c

@@ -206,7 +206,7 @@ static struct platform_device v2m_usb_device = {
 	.dev.platform_data = &v2m_usb_config,
 };
 
-static void v2m_flash_set_vpp(struct map_info *map, int on)
+static void v2m_flash_set_vpp(struct platform_device *pdev, int on)
 {
 	writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
 }

arch/arm/plat-omap/include/plat/flash.h

@@ -11,6 +11,6 @@
 
 #include <linux/mtd/map.h>
 
-extern void omap1_set_vpp(struct map_info *map, int enable);
+extern void omap1_set_vpp(struct platform_device *pdev, int enable);
 
 #endif

drivers/mtd/maps/physmap.c

@@ -74,6 +74,18 @@ static int physmap_flash_remove(struct platform_device *dev)
 	return 0;
 }
 
+static void physmap_set_vpp(struct map_info *map, int state)
+{
+	struct platform_device *pdev;
+	struct physmap_flash_data *physmap_data;
+
+	pdev = (struct platform_device *)map->map_priv_1;
+	physmap_data = pdev->dev.platform_data;
+
+	if (physmap_data->set_vpp)
+		physmap_data->set_vpp(pdev, state);
+}
+
 static const char *rom_probe_types[] = {
 					"cfi_probe",
 					"jedec_probe",
@@ -81,10 +93,7 @@ static const char *rom_probe_types[] = {
 					"map_rom",
 					NULL };
 #ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probe_types[] = { "cmdlinepart", "RedBoot",
-#ifdef CONFIG_MTD_AFS_PARTS
-					  "afs",
-#endif
+static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", "afs",
 					  NULL };
 #endif
 
@@ -134,8 +143,9 @@ static int physmap_flash_probe(struct platform_device *dev)
 		info->map[i].phys = dev->resource[i].start;
 		info->map[i].size = resource_size(&dev->resource[i]);
 		info->map[i].bankwidth = physmap_data->width;
-		info->map[i].set_vpp = physmap_data->set_vpp;
+		info->map[i].set_vpp = physmap_set_vpp;
 		info->map[i].pfow_base = physmap_data->pfow_base;
+		info->map[i].map_priv_1 = (unsigned long)dev;
 
 		info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys,
 						 info->map[i].size);

drivers/mtd/maps/pismo.c

@@ -50,39 +50,13 @@ struct pismo_data {
 	struct platform_device	*dev[PISMO_NUM_CS];
 };
 
-/* FIXME: set_vpp could do with a better calling convention */
-static struct pismo_data *vpp_pismo;
-static DEFINE_MUTEX(pismo_mutex);
-
-static int pismo_setvpp_probe_fix(struct pismo_data *pismo)
+static void pismo_set_vpp(struct platform_device *pdev, int on)
 {
-	mutex_lock(&pismo_mutex);
-	if (vpp_pismo) {
-		mutex_unlock(&pismo_mutex);
-		kfree(pismo);
-		return -EBUSY;
-	}
-	vpp_pismo = pismo;
-	mutex_unlock(&pismo_mutex);
-	return 0;
-}
-
-static void pismo_setvpp_remove_fix(struct pismo_data *pismo)
-{
-	mutex_lock(&pismo_mutex);
-	if (vpp_pismo == pismo)
-		vpp_pismo = NULL;
-	mutex_unlock(&pismo_mutex);
-}
-
-static void pismo_set_vpp(struct map_info *map, int on)
-{
-	struct pismo_data *pismo = vpp_pismo;
+	struct i2c_client *client = to_i2c_client(pdev->dev.parent);
+	struct pismo_data *pismo = i2c_get_clientdata(client);
 
 	pismo->vpp(pismo->vpp_data, on);
 }
-/* end of hack */
-
 
 static unsigned int __devinit pismo_width_to_bytes(unsigned int width)
 {
@@ -231,9 +205,6 @@ static int __devexit pismo_remove(struct i2c_client *client)
 	for (i = 0; i < ARRAY_SIZE(pismo->dev); i++)
 		platform_device_unregister(pismo->dev[i]);
 
-	/* FIXME: set_vpp needs saner arguments */
-	pismo_setvpp_remove_fix(pismo);
-
 	kfree(pismo);
 
 	return 0;
@@ -257,11 +228,6 @@ static int __devinit pismo_probe(struct i2c_client *client,
 	if (!pismo)
 		return -ENOMEM;
 
-	/* FIXME: set_vpp needs saner arguments */
-	ret = pismo_setvpp_probe_fix(pismo);
-	if (ret)
-		return ret;
-
 	pismo->client = client;
 	if (pdata) {
 		pismo->vpp = pdata->set_vpp;

include/linux/mtd/physmap.h

@@ -24,7 +24,7 @@ struct physmap_flash_data {
 	unsigned int		width;
 	int			(*init)(struct platform_device *);
 	void			(*exit)(struct platform_device *);
-	void			(*set_vpp)(struct map_info *, int);
+	void			(*set_vpp)(struct platform_device *, int);
 	unsigned int		nr_parts;
 	unsigned int		pfow_base;
 	char                    *probe_type;