power: reset: at91-reset: introduce struct at91_reset

Introduce struct at91_reset intended to keep all the at91 reset controller
data.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index d94e326..2df0610 100644 (file)
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -49,7 +49,13 @@ enum reset_type {
        RESET_TYPE_ULP2         = 8,
 };
 
-static void __iomem *at91_ramc_base[2], *at91_rstc_base;
+struct at91_reset {
+       void __iomem *rstc_base;
+};
+
+static struct at91_reset reset;
+
+static void __iomem *at91_ramc_base[2];
 static struct clk *sclk;
 
 /*
@@ -76,7 +82,7 @@ static int at91sam9260_restart(struct notifier_block *this, unsigned long mode,
                "b      .\n\t"
                :
                : "r" (at91_ramc_base[0]),
-                 "r" (at91_rstc_base),
+                 "r" (reset.rstc_base),
                  "r" (1),
                  "r" cpu_to_le32(AT91_SDRAMC_LPCB_POWER_DOWN),
                  "r" cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST));
@@ -119,7 +125,7 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
                :
                : "r" (at91_ramc_base[0]),
                  "r" (at91_ramc_base[1]),
-                 "r" (at91_rstc_base),
+                 "r" (reset.rstc_base),
                  "r" (1),
                  "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN),
                  "r" cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST)
@@ -131,8 +137,8 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
 static int sama5d3_restart(struct notifier_block *this, unsigned long mode,
                           void *cmd)
 {
-       writel(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST,
-              at91_rstc_base);
+       writel(cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST),
+              reset.rstc_base);
 
        return NOTIFY_DONE;
 }
@@ -140,14 +146,16 @@ static int sama5d3_restart(struct notifier_block *this, unsigned long mode,
 static int samx7_restart(struct notifier_block *this, unsigned long mode,
                         void *cmd)
 {
-       writel(AT91_RSTC_KEY | AT91_RSTC_PROCRST, at91_rstc_base);
+       writel(cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PROCRST),
+              reset.rstc_base);
+
        return NOTIFY_DONE;
 }
 
 static void __init at91_reset_status(struct platform_device *pdev)
 {
        const char *reason;
-       u32 reg = readl(at91_rstc_base + AT91_RSTC_SR);
+       u32 reg = readl(reset.rstc_base + AT91_RSTC_SR);
 
        switch ((reg & AT91_RSTC_RSTTYP) >> 8) {
        case RESET_TYPE_GENERAL:
@@ -208,8 +216,8 @@ static int __init at91_reset_probe(struct platform_device *pdev)
        struct device_node *np;
        int ret, idx = 0;
 
-       at91_rstc_base = of_iomap(pdev->dev.of_node, 0);
-       if (!at91_rstc_base) {
+       reset.rstc_base = of_iomap(pdev->dev.of_node, 0);
+       if (!reset.rstc_base) {
                dev_err(&pdev->dev, "Could not map reset controller address\n");
                return -ENODEV;
        }