diff options
Diffstat (limited to 'arch/arm/mach-mxs/clock-mx28.c')
| -rw-r--r-- | arch/arm/mach-mxs/clock-mx28.c | 57 |
1 files changed, 14 insertions, 43 deletions
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c index 5d68e415222..22ad12f6e4d 100644 --- a/arch/arm/mach-mxs/clock-mx28.c +++ b/arch/arm/mach-mxs/clock-mx28.c @@ -322,7 +322,6 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ { \ u32 reg, bm_busy, div_max, d, f, div, frac; \ unsigned long diff, parent_rate, calc_rate; \ - int i; \ \ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \ bm_busy = BM_CLKCTRL_##dr##_BUSY; \ @@ -396,16 +395,7 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ } \ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \ \ - for (i = 10000; i; i--) \ - if (!(__raw_readl(CLKCTRL_BASE_ADDR + \ - HW_CLKCTRL_##dr) & bm_busy)) \ - break; \ - if (!i) { \ - pr_err("%s: divider writing timeout\n", __func__); \ - return -ETIMEDOUT; \ - } \ - \ - return 0; \ + return mxs_clkctrl_timeout(HW_CLKCTRL_##dr, bm_busy); \ } _CLK_SET_RATE(cpu_clk, CPU, FRAC0, CPU) @@ -421,7 +411,6 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ { \ u32 reg, div_max, div; \ unsigned long parent_rate; \ - int i; \ \ parent_rate = clk_get_rate(clk->parent); \ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \ @@ -439,16 +428,7 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ } \ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \ \ - for (i = 10000; i; i--) \ - if (!(__raw_readl(CLKCTRL_BASE_ADDR + \ - HW_CLKCTRL_##dr) & BM_CLKCTRL_##dr##_BUSY)) \ - break; \ - if (!i) { \ - pr_err("%s: divider writing timeout\n", __func__); \ - return -ETIMEDOUT; \ - } \ - \ - return 0; \ + return mxs_clkctrl_timeout(HW_CLKCTRL_##dr, BM_CLKCTRL_##dr##_BUSY);\ } _CLK_SET_RATE1(xbus_clk, XBUS) @@ -461,7 +441,6 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ u32 reg; \ u64 lrate; \ unsigned long parent_rate; \ - int i; \ \ parent_rate = clk_get_rate(clk->parent); \ if (rate > parent_rate) \ @@ -477,18 +456,13 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \ reg &= ~BM_CLKCTRL_##rs##_DIV; \ reg |= div << BP_CLKCTRL_##rs##_DIV; \ - __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \ - \ - for (i = 10000; i; i--) \ - if (!(__raw_readl(CLKCTRL_BASE_ADDR + \ - HW_CLKCTRL_##rs) & BM_CLKCTRL_##rs##_BUSY)) \ - break; \ - if (!i) { \ - pr_err("%s: divider writing timeout\n", __func__); \ - return -ETIMEDOUT; \ + if (reg & (1 << clk->enable_shift)) { \ + pr_err("%s: clock is gated\n", __func__); \ + return -EINVAL; \ } \ + __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \ \ - return 0; \ + return mxs_clkctrl_timeout(HW_CLKCTRL_##rs, BM_CLKCTRL_##rs##_BUSY);\ } _CLK_SET_RATE_SAIF(saif0_clk, SAIF0) @@ -654,6 +628,8 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK("mxs-dma-apbx", NULL, xbus_clk) _REGISTER_CLOCK("mxs-mmc.0", NULL, ssp0_clk) _REGISTER_CLOCK("mxs-mmc.1", NULL, ssp1_clk) + _REGISTER_CLOCK("mxs-mmc.2", NULL, ssp2_clk) + _REGISTER_CLOCK("mxs-mmc.3", NULL, ssp3_clk) _REGISTER_CLOCK("flexcan.0", NULL, can0_clk) _REGISTER_CLOCK("flexcan.1", NULL, can1_clk) _REGISTER_CLOCK(NULL, "usb0", usb0_clk) @@ -676,7 +652,7 @@ static struct clk_lookup lookups[] = { static int clk_misc_init(void) { u32 reg; - int i; + int ret; /* Fix up parent per register setting */ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_CLKSEQ); @@ -756,14 +732,7 @@ static int clk_misc_init(void) reg |= 3 << BP_CLKCTRL_HBUS_DIV; __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS); - for (i = 10000; i; i--) - if (!(__raw_readl(CLKCTRL_BASE_ADDR + - HW_CLKCTRL_HBUS) & BM_CLKCTRL_HBUS_ASM_BUSY)) - break; - if (!i) { - pr_err("%s: divider writing timeout\n", __func__); - return -ETIMEDOUT; - } + ret = mxs_clkctrl_timeout(HW_CLKCTRL_HBUS, BM_CLKCTRL_HBUS_ASM_BUSY); /* Gate off cpu clock in WFI for power saving */ __raw_writel(BM_CLKCTRL_CPU_INTERRUPT_WAIT, @@ -790,7 +759,7 @@ static int clk_misc_init(void) reg |= 30 << BP_CLKCTRL_FRAC0_IO0FRAC; __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC0); - return 0; + return ret; } int __init mx28_clocks_init(void) @@ -803,6 +772,8 @@ int __init mx28_clocks_init(void) */ clk_set_parent(&ssp0_clk, &ref_io0_clk); clk_set_parent(&ssp1_clk, &ref_io0_clk); + clk_set_parent(&ssp2_clk, &ref_io1_clk); + clk_set_parent(&ssp3_clk, &ref_io1_clk); clk_prepare_enable(&cpu_clk); clk_prepare_enable(&hbus_clk); |