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-rw-r--r--target/linux/ar7/files/arch/mips/ar7/clock.c67
1 files changed, 32 insertions, 35 deletions
diff --git a/target/linux/ar7/files/arch/mips/ar7/clock.c b/target/linux/ar7/files/arch/mips/ar7/clock.c
index 0f7e2d7eeb..ff4b5816e7 100644
--- a/target/linux/ar7/files/arch/mips/ar7/clock.c
+++ b/target/linux/ar7/files/arch/mips/ar7/clock.c
@@ -48,12 +48,12 @@
#define TNETD7200_DEF_USB_CLK 48000000
struct tnetd7300_clock {
- volatile u32 ctrl;
+ u32 ctrl;
#define PREDIV_MASK 0x001f0000
#define PREDIV_SHIFT 16
#define POSTDIV_MASK 0x0000001f
u32 unused1[3];
- volatile u32 pll;
+ u32 pll;
#define MUL_MASK 0x0000f000
#define MUL_SHIFT 12
#define PLL_MODE_MASK 0x00000001
@@ -71,17 +71,17 @@ struct tnetd7300_clocks {
};
struct tnetd7200_clock {
- volatile u32 ctrl;
+ u32 ctrl;
u32 unused1[3];
#define DIVISOR_ENABLE_MASK 0x00008000
- volatile u32 mul;
- volatile u32 prediv;
- volatile u32 postdiv;
- volatile u32 postdiv2;
+ u32 mul;
+ u32 prediv;
+ u32 postdiv;
+ u32 postdiv2;
u32 unused2[6];
- volatile u32 cmd;
- volatile u32 status;
- volatile u32 cmden;
+ u32 cmd;
+ u32 status;
+ u32 cmden;
u32 padding[15];
};
@@ -180,8 +180,8 @@ static int tnetd7300_get_clock(u32 shift, struct tnetd7300_clock *clock,
{
int product;
int base_clock = AR7_REF_CLOCK;
- u32 ctrl = clock->ctrl;
- u32 pll = clock->pll;
+ u32 ctrl = readl(&clock->ctrl);
+ u32 pll = readl(&clock->pll);
int prediv = ((ctrl & PREDIV_MASK) >> PREDIV_SHIFT) + 1;
int postdiv = (ctrl & POSTDIV_MASK) + 1;
int divisor = prediv * postdiv;
@@ -224,7 +224,6 @@ static int tnetd7300_get_clock(u32 shift, struct tnetd7300_clock *clock,
static void tnetd7300_set_clock(u32 shift, struct tnetd7300_clock *clock,
u32 *bootcr, u32 frequency)
{
- u32 status;
int prediv, postdiv, mul;
int base_clock = ar7_bus_clock;
@@ -245,13 +244,11 @@ static void tnetd7300_set_clock(u32 shift, struct tnetd7300_clock *clock,
calculate(base_clock, frequency, &prediv, &postdiv, &mul);
- clock->ctrl = ((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1);
+ writel(((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1), &clock->ctrl);
mdelay(1);
- clock->pll = 4;
- do
- status = clock->pll;
- while (status & PLL_STATUS);
- clock->pll = ((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e;
+ writel(4, &clock->pll);
+ while (readl(&clock->pll) & PLL_STATUS);
+ writel(((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e, &clock->pll);
mdelay(75);
}
@@ -286,13 +283,13 @@ static void __init tnetd7300_init_clocks(void)
static int tnetd7200_get_clock(int base, struct tnetd7200_clock *clock,
u32 *bootcr, u32 bus_clock)
{
- int divisor = ((clock->prediv & 0x1f) + 1) *
- ((clock->postdiv & 0x1f) + 1);
+ int divisor = ((readl(&clock->prediv) & 0x1f) + 1) *
+ ((readl(&clock->postdiv) & 0x1f) + 1);
if (*bootcr & BOOT_PLL_BYPASS)
return base / divisor;
- return base * ((clock->mul & 0xf) + 1) / divisor;
+ return base * ((readl(&clock->mul) & 0xf) + 1) / divisor;
}
@@ -304,29 +301,29 @@ static void tnetd7200_set_clock(int base, struct tnetd7200_clock *clock,
"postdiv = %d, postdiv2 = %d, mul = %d\n",
base, frequency, prediv, postdiv, postdiv2, mul);
- clock->ctrl = 0;
- clock->prediv = DIVISOR_ENABLE_MASK | ((prediv - 1) & 0x1F);
- clock->mul = ((mul - 1) & 0xF);
+ writel(0, &clock->ctrl);
+ writel(DIVISOR_ENABLE_MASK | ((prediv - 1) & 0x1F), &clock->prediv);
+ writel((mul - 1) & 0xF, &clock->mul);
for (mul = 0; mul < 2000; mul++) /* nop */;
- while (clock->status & 0x1) /* nop */;
+ while (readl(&clock->status) & 0x1) /* nop */;
- clock->postdiv = DIVISOR_ENABLE_MASK | ((postdiv - 1) & 0x1F);
+ writel(DIVISOR_ENABLE_MASK | ((postdiv - 1) & 0x1F), &clock->postdiv);
- clock->cmden |= 1;
- clock->cmd |= 1;
+ writel(readl(&clock->cmden) | 1, &clock->cmden);
+ writel(readl(&clock->cmd) | 1, &clock->cmd);
- while (clock->status & 0x1) /* nop */;
+ while (readl(&clock->status) & 0x1) /* nop */;
- clock->postdiv2 = DIVISOR_ENABLE_MASK | ((postdiv2 - 1) & 0x1F);
+ writel(DIVISOR_ENABLE_MASK | ((postdiv2 - 1) & 0x1F), &clock->postdiv2);
- clock->cmden |= 1;
- clock->cmd |= 1;
+ writel(readl(&clock->cmden) | 1, &clock->cmden);
+ writel(readl(&clock->cmd) | 1, &clock->cmd);
- while (clock->status & 0x1) /* nop */;
+ while (readl(&clock->status) & 0x1) /* nop */;
- clock->ctrl |= 1;
+ writel(readl(&clock->ctrl) | 1, &clock->ctrl);
}
static int tnetd7200_get_clock_base(int clock_id, u32 *bootcr)