From a9d2ba1444b0af6c2d8534f0b306660ffc045bc6 Mon Sep 17 00:00:00 2001 From: Ian Wisbon Date: Thu, 10 Feb 2011 17:15:15 -0500 Subject: Linux 2.6.31 Release for Digi ConnectCore Wi-i.MX boards --- arch/arm/mach-mx28/bus_freq.c | 80 ++++++++----------------------------------- 1 file changed, 15 insertions(+), 65 deletions(-) (limited to 'arch/arm/mach-mx28/bus_freq.c') diff --git a/arch/arm/mach-mx28/bus_freq.c b/arch/arm/mach-mx28/bus_freq.c index a997eaa9a01f..ef01a41fc095 100644 --- a/arch/arm/mach-mx28/bus_freq.c +++ b/arch/arm/mach-mx28/bus_freq.c @@ -46,24 +46,19 @@ #define CLKCTRL_BASE_ADDR IO_ADDRESS(CLKCTRL_PHYS_ADDR) #define DIGCTRL_BASE_ADDR IO_ADDRESS(DIGCTL_PHYS_ADDR) -#define BP_CLKCTRL_HBUS_ASM_ENABLE 20 -#define CLKCTRL_PLL_PWD_BIT 17 -#define CLKCTRL_PLL_BYPASS 0x1ff #define BF(value, field) (((value) << BP_##field) & BM_##field) struct profile profiles[] = { - { 454736, 151580, 196360, 0, 1550000, - 1450000, 355000, 3300000, 1750000, 0 }, - { 392727, 130910, 160000, 0, 1475000, - 1375000, 225000, 3300000, 1750000, 0 }, - { 360000, 120000, 130910, 0, 1375000, - 1275000, 200000, 3300000, 1750000, 0 }, - { 261818, 130910, 130910, 0, 1275000, - 1175000, 173000, 3300000, 1750000, 0 }, - { 64000, 64000, 130910, 3, 1050000, - 975000, 150000, 3300000, 1750000, 0 }, + { 454736, 151570, 205710, 0, 1550000, + 1450000, 355000, 3300000, 1750000, 24000, 0 }, + { 360000, 120000, 130910, 0, 1350000, + 1250000, 200000, 3300000, 1750000, 24000, 0 }, + { 261818, 130910, 130910, 0, 1350000, + 1250000, 173000, 3300000, 1750000, 24000, 0 }, + { 64000, 64000, 130910, 3, 1350000, + 1250000, 150000, 3300000, 1750000, 24000, 0 }, { 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0 }, + 0, 0, 0, 0, 0, 0 }, }; static struct device *busfreq_dev; @@ -82,58 +77,13 @@ int low_freq_used(void) return 0; } -void hbus_auto_slow_mode_enable(void) +int is_hclk_autoslow_ok(void) { - __raw_writel(BP_CLKCTRL_HBUS_ASM_ENABLE, - CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS_SET); -} -EXPORT_SYMBOL(hbus_auto_slow_mode_enable); - -void hbus_auto_slow_mode_disable(void) -{ - __raw_writel(BP_CLKCTRL_HBUS_ASM_ENABLE, - CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS_CLR); -} -EXPORT_SYMBOL(hbus_auto_slow_mode_disable); - -int cpu_clk_set_pll_on(struct clk *clk, unsigned int freq) -{ - struct cpufreq_freqs freqs; - - freqs.old = clk_get_rate(clk); - freqs.cpu = 0; - freqs.new = freq; - - if (freqs.old == 24000 && freqs.new > 24000) { - /* turn pll on */ - __raw_writel(CLKCTRL_PLL_PWD_BIT, CLKCTRL_BASE_ADDR + - HW_CLKCTRL_PLL0CTRL0_SET); - udelay(10); - } else if (freqs.old > 24000 && freqs.new == 24000) - clkseq_setting = __raw_readl(CLKCTRL_BASE_ADDR + - HW_CLKCTRL_CLKSEQ); - return 0; -} - -int cpu_clk_set_pll_off(struct clk *clk, unsigned int freq) -{ - struct cpufreq_freqs freqs; - - freqs.old = clk_get_rate(clk); - freqs.cpu = 0; - freqs.new = freq; - - if (freqs.old > 24000 && freqs.new == 24000) { - /* turn pll off */ - __raw_writel(CLKCTRL_PLL_PWD_BIT, CLKCTRL_BASE_ADDR + - HW_CLKCTRL_PLL0CTRL0_CLR); - __raw_writel(CLKCTRL_PLL_BYPASS, CLKCTRL_BASE_ADDR + - HW_CLKCTRL_CLKSEQ); - } else if (freqs.old == 24000 && freqs.new > 24000) - __raw_writel(clkseq_setting, CLKCTRL_BASE_ADDR + - HW_CLKCTRL_CLKSEQ); - - return 0; + if ((clk_get_usecount(usb_clk0) == 0) + && (clk_get_usecount(usb_clk1) == 0)) + return 1; + else + return 0; } int timing_ctrl_rams(int ss) -- cgit v1.2.3