diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-29 00:03:14 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-29 00:03:14 +0300 |
commit | 0fe41b8982001cd14ee2c77cd776735a5024e98b (patch) | |
tree | 83e65d595c413d55259ea14fb97748ce5efe5707 /arch/arm/mach-mx3/clock.c | |
parent | eedf2c5296a8dfaaf9aec1a938c1d3bd73159a30 (diff) | |
parent | 9759d22c8348343b0da4e25d6150c41712686c14 (diff) | |
download | linux-0fe41b8982001cd14ee2c77cd776735a5024e98b.tar.xz |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (422 commits)
[ARM] 5435/1: fix compile warning in sanity_check_meminfo()
[ARM] 5434/1: ARM: OMAP: Fix mailbox compile for 24xx
[ARM] pxa: fix the bad assumption that PCMCIA sockets always start with 0
[ARM] pxa: fix Colibri PXA300 and PXA320 LCD backlight pins
imxfb: Fix TFT mode
i.MX21/27: remove ifdef CONFIG_FB_IMX
imxfb: add clock support
mxc: add arch_reset() function
clkdev: add possibility to get a clock based on the device name
i.MX1: remove fb support from mach-imx
[ARM] pxa: build arch/arm/plat-pxa/mfp.c only when PXA3xx or ARCH_MMP defined
Gemini: Add support for Teltonika RUT100
Gemini: gpiolib based GPIO support v2
MAINTAINERS: add myself as Gemini architecture maintainer
ARM: Add Gemini architecture v3
[ARM] OMAP: Fix compile for omap2_init_common_hw()
MAINTAINERS: Add myself as Faraday ARM core variant maintainer
ARM: Add support for FA526 v2
[ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h
[ARM] collie: fix two minor formatting nits
...
Diffstat (limited to 'arch/arm/mach-mx3/clock.c')
-rw-r--r-- | arch/arm/mach-mx3/clock.c | 959 |
1 files changed, 208 insertions, 751 deletions
diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c index b1746aae1f89..ca46f4801c3d 100644 --- a/arch/arm/mach-mx3/clock.c +++ b/arch/arm/mach-mx3/clock.c @@ -23,9 +23,13 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> + +#include <asm/clkdev.h> +#include <asm/div64.h> + #include <mach/clock.h> #include <mach/hardware.h> -#include <asm/div64.h> +#include <mach/common.h> #include "crm_regs.h" @@ -64,17 +68,17 @@ static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post) } static struct clk mcu_pll_clk; -static struct clk mcu_main_clk; -static struct clk usb_pll_clk; static struct clk serial_pll_clk; static struct clk ipg_clk; static struct clk ckih_clk; -static struct clk ahb_clk; -static int _clk_enable(struct clk *clk) +static int cgr_enable(struct clk *clk) { u32 reg; + if (!clk->enable_reg) + return 0; + reg = __raw_readl(clk->enable_reg); reg |= 3 << clk->enable_shift; __raw_writel(reg, clk->enable_reg); @@ -82,133 +86,69 @@ static int _clk_enable(struct clk *clk) return 0; } -static void _clk_disable(struct clk *clk) +static void cgr_disable(struct clk *clk) { u32 reg; + if (!clk->enable_reg) + return; + reg = __raw_readl(clk->enable_reg); reg &= ~(3 << clk->enable_shift); + + /* special case for EMI clock */ + if (clk->enable_reg == MXC_CCM_CGR2 && clk->enable_shift == 8) + reg |= (1 << clk->enable_shift); + __raw_writel(reg, clk->enable_reg); } -static void _clk_emi_disable(struct clk *clk) +static unsigned long pll_ref_get_rate(void) { - u32 reg; + unsigned long ccmr; + unsigned int prcs; - reg = __raw_readl(clk->enable_reg); - reg &= ~(3 << clk->enable_shift); - reg |= (1 << clk->enable_shift); - __raw_writel(reg, clk->enable_reg); + ccmr = __raw_readl(MXC_CCM_CCMR); + prcs = (ccmr & MXC_CCM_CCMR_PRCS_MASK) >> MXC_CCM_CCMR_PRCS_OFFSET; + if (prcs == 0x1) + return CKIL_CLK_FREQ * 1024; + else + return clk_get_rate(&ckih_clk); } -static int _clk_pll_set_rate(struct clk *clk, unsigned long rate) +static unsigned long usb_pll_get_rate(struct clk *clk) { - u32 reg; - signed long pd = 1; /* Pre-divider */ - signed long mfi; /* Multiplication Factor (Integer part) */ - signed long mfn; /* Multiplication Factor (Integer part) */ - signed long mfd; /* Multiplication Factor (Denominator Part) */ - signed long tmp; - u32 ref_freq = clk_get_rate(clk->parent); + unsigned long reg; - while (((ref_freq / pd) * 10) > rate) - pd++; + reg = __raw_readl(MXC_CCM_UPCTL); - if ((ref_freq / pd) < PRE_DIV_MIN_FREQ) - return -EINVAL; + return mxc_decode_pll(reg, pll_ref_get_rate()); +} - /* the ref_freq/2 in the following is to round up */ - mfi = (((rate / 2) * pd) + (ref_freq / 2)) / ref_freq; - if (mfi < 5 || mfi > 15) - return -EINVAL; +static unsigned long serial_pll_get_rate(struct clk *clk) +{ + unsigned long reg; - /* pick a mfd value that will work - * then solve for mfn */ - mfd = ref_freq / 50000; - - /* - * pll_freq * pd * mfd - * mfn = -------------------- - (mfi * mfd) - * 2 * ref_freq - */ - /* the tmp/2 is for rounding */ - tmp = ref_freq / 10000; - mfn = - ((((((rate / 2) + (tmp / 2)) / tmp) * pd) * mfd) / 10000) - - (mfi * mfd); - - mfn = mfn & 0x3ff; - pd--; - mfd--; - - /* Change the Pll value */ - reg = (mfi << MXC_CCM_PCTL_MFI_OFFSET) | - (mfn << MXC_CCM_PCTL_MFN_OFFSET) | - (mfd << MXC_CCM_PCTL_MFD_OFFSET) | (pd << MXC_CCM_PCTL_PD_OFFSET); - - if (clk == &mcu_pll_clk) - __raw_writel(reg, MXC_CCM_MPCTL); - else if (clk == &usb_pll_clk) - __raw_writel(reg, MXC_CCM_UPCTL); - else if (clk == &serial_pll_clk) - __raw_writel(reg, MXC_CCM_SRPCTL); + reg = __raw_readl(MXC_CCM_SRPCTL); - return 0; + return mxc_decode_pll(reg, pll_ref_get_rate()); } -static unsigned long _clk_pll_get_rate(struct clk *clk) +static unsigned long mcu_pll_get_rate(struct clk *clk) { - long mfi, mfn, mfd, pdf, ref_clk, mfn_abs; unsigned long reg, ccmr; - s64 temp; - unsigned int prcs; ccmr = __raw_readl(MXC_CCM_CCMR); - prcs = (ccmr & MXC_CCM_CCMR_PRCS_MASK) >> MXC_CCM_CCMR_PRCS_OFFSET; - if (prcs == 0x1) - ref_clk = CKIL_CLK_FREQ * 1024; - else - ref_clk = clk_get_rate(&ckih_clk); - - if (clk == &mcu_pll_clk) { - if ((ccmr & MXC_CCM_CCMR_MPE) == 0) - return ref_clk; - if ((ccmr & MXC_CCM_CCMR_MDS) != 0) - return ref_clk; - reg = __raw_readl(MXC_CCM_MPCTL); - } else if (clk == &usb_pll_clk) - reg = __raw_readl(MXC_CCM_UPCTL); - else if (clk == &serial_pll_clk) - reg = __raw_readl(MXC_CCM_SRPCTL); - else { - BUG(); - return 0; - } - - pdf = (reg & MXC_CCM_PCTL_PD_MASK) >> MXC_CCM_PCTL_PD_OFFSET; - mfd = (reg & MXC_CCM_PCTL_MFD_MASK) >> MXC_CCM_PCTL_MFD_OFFSET; - mfi = (reg & MXC_CCM_PCTL_MFI_MASK) >> MXC_CCM_PCTL_MFI_OFFSET; - mfi = (mfi <= 5) ? 5 : mfi; - mfn = mfn_abs = reg & MXC_CCM_PCTL_MFN_MASK; - if (mfn >= 0x200) { - mfn |= 0xFFFFFE00; - mfn_abs = -mfn; - } - - ref_clk *= 2; - ref_clk /= pdf + 1; + if (!(ccmr & MXC_CCM_CCMR_MPE) || (ccmr & MXC_CCM_CCMR_MDS)) + return clk_get_rate(&ckih_clk); - temp = (u64) ref_clk * mfn_abs; - do_div(temp, mfd + 1); - if (mfn < 0) - temp = -temp; - temp = (ref_clk * mfi) + temp; + reg = __raw_readl(MXC_CCM_MPCTL); - return temp; + return mxc_decode_pll(reg, pll_ref_get_rate()); } -static int _clk_usb_pll_enable(struct clk *clk) +static int usb_pll_enable(struct clk *clk) { u32 reg; @@ -222,7 +162,7 @@ static int _clk_usb_pll_enable(struct clk *clk) return 0; } -static void _clk_usb_pll_disable(struct clk *clk) +static void usb_pll_disable(struct clk *clk) { u32 reg; @@ -231,7 +171,7 @@ static void _clk_usb_pll_disable(struct clk *clk) __raw_writel(reg, MXC_CCM_CCMR); } -static int _clk_serial_pll_enable(struct clk *clk) +static int serial_pll_enable(struct clk *clk) { u32 reg; @@ -245,7 +185,7 @@ static int _clk_serial_pll_enable(struct clk *clk) return 0; } -static void _clk_serial_pll_disable(struct clk *clk) +static void serial_pll_disable(struct clk *clk) { u32 reg; @@ -258,7 +198,7 @@ static void _clk_serial_pll_disable(struct clk *clk) #define PDR1(mask, off) ((__raw_readl(MXC_CCM_PDR1) & mask) >> off) #define PDR2(mask, off) ((__raw_readl(MXC_CCM_PDR2) & mask) >> off) -static unsigned long _clk_mcu_main_get_rate(struct clk *clk) +static unsigned long mcu_main_get_rate(struct clk *clk) { u32 pmcr0 = __raw_readl(MXC_CCM_PMCR0); @@ -268,7 +208,7 @@ static unsigned long _clk_mcu_main_get_rate(struct clk *clk) return clk_get_rate(&mcu_pll_clk); } -static unsigned long _clk_hclk_get_rate(struct clk *clk) +static unsigned long ahb_get_rate(struct clk *clk) { unsigned long max_pdf; @@ -277,7 +217,7 @@ static unsigned long _clk_hclk_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (max_pdf + 1); } -static unsigned long _clk_ipg_get_rate(struct clk *clk) +static unsigned long ipg_get_rate(struct clk *clk) { unsigned long ipg_pdf; @@ -286,7 +226,7 @@ static unsigned long _clk_ipg_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (ipg_pdf + 1); } -static unsigned long _clk_nfc_get_rate(struct clk *clk) +static unsigned long nfc_get_rate(struct clk *clk) { unsigned long nfc_pdf; @@ -295,7 +235,7 @@ static unsigned long _clk_nfc_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (nfc_pdf + 1); } -static unsigned long _clk_hsp_get_rate(struct clk *clk) +static unsigned long hsp_get_rate(struct clk *clk) { unsigned long hsp_pdf; @@ -304,7 +244,7 @@ static unsigned long _clk_hsp_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (hsp_pdf + 1); } -static unsigned long _clk_usb_get_rate(struct clk *clk) +static unsigned long usb_get_rate(struct clk *clk) { unsigned long usb_pdf, usb_prepdf; @@ -315,7 +255,7 @@ static unsigned long _clk_usb_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (usb_prepdf + 1) / (usb_pdf + 1); } -static unsigned long _clk_csi_get_rate(struct clk *clk) +static unsigned long csi_get_rate(struct clk *clk) { u32 reg, pre, post; @@ -329,7 +269,7 @@ static unsigned long _clk_csi_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (pre * post); } -static unsigned long _clk_csi_round_rate(struct clk *clk, unsigned long rate) +static unsigned long csi_round_rate(struct clk *clk, unsigned long rate) { u32 pre, post, parent = clk_get_rate(clk->parent); u32 div = parent / rate; @@ -342,7 +282,7 @@ static unsigned long _clk_csi_round_rate(struct clk *clk, unsigned long rate) return parent / (pre * post); } -static int _clk_csi_set_rate(struct clk *clk, unsigned long rate) +static int csi_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div, pre, post, parent = clk_get_rate(clk->parent); @@ -363,16 +303,7 @@ static int _clk_csi_set_rate(struct clk *clk, unsigned long rate) return 0; } -static unsigned long _clk_per_get_rate(struct clk *clk) -{ - unsigned long per_pdf; - - per_pdf = PDR0(MXC_CCM_PDR0_PER_PODF_MASK, - MXC_CCM_PDR0_PER_PODF_OFFSET); - return clk_get_rate(clk->parent) / (per_pdf + 1); -} - -static unsigned long _clk_ssi1_get_rate(struct clk *clk) +static unsigned long ssi1_get_rate(struct clk *clk) { unsigned long ssi1_pdf, ssi1_prepdf; @@ -383,7 +314,7 @@ static unsigned long _clk_ssi1_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (ssi1_prepdf + 1) / (ssi1_pdf + 1); } -static unsigned long _clk_ssi2_get_rate(struct clk *clk) +static unsigned long ssi2_get_rate(struct clk *clk) { unsigned long ssi2_pdf, ssi2_prepdf; @@ -394,7 +325,7 @@ static unsigned long _clk_ssi2_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (ssi2_prepdf + 1) / (ssi2_pdf + 1); } -static unsigned long _clk_firi_get_rate(struct clk *clk) +static unsigned long firi_get_rate(struct clk *clk) { unsigned long firi_pdf, firi_prepdf; @@ -405,7 +336,7 @@ static unsigned long _clk_firi_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (firi_prepdf + 1) / (firi_pdf + 1); } -static unsigned long _clk_firi_round_rate(struct clk *clk, unsigned long rate) +static unsigned long firi_round_rate(struct clk *clk, unsigned long rate) { u32 pre, post; u32 parent = clk_get_rate(clk->parent); @@ -420,7 +351,7 @@ static unsigned long _clk_firi_round_rate(struct clk *clk, unsigned long rate) } -static int _clk_firi_set_rate(struct clk *clk, unsigned long rate) +static int firi_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div, pre, post, parent = clk_get_rate(clk->parent); @@ -441,12 +372,12 @@ static int _clk_firi_set_rate(struct clk *clk, unsigned long rate) return 0; } -static unsigned long _clk_mbx_get_rate(struct clk *clk) +static unsigned long mbx_get_rate(struct clk *clk) { return clk_get_rate(clk->parent) / 2; } -static unsigned long _clk_mstick1_get_rate(struct clk *clk) +static unsigned long mstick1_get_rate(struct clk *clk) { unsigned long msti_pdf; @@ -455,7 +386,7 @@ static unsigned long _clk_mstick1_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / (msti_pdf + 1); } -static unsigned long _clk_mstick2_get_rate(struct clk *clk) +static unsigned long mstick2_get_rate(struct clk *clk) { unsigned long msti_pdf; @@ -472,661 +403,185 @@ static unsigned long clk_ckih_get_rate(struct clk *clk) } static struct clk ckih_clk = { - .name = "ckih", .get_rate = clk_ckih_get_rate, }; -static unsigned long clk_ckil_get_rate(struct clk *clk) -{ - return CKIL_CLK_FREQ; -} - -static struct clk ckil_clk = { - .name = "ckil", - .get_rate = clk_ckil_get_rate, -}; - static struct clk mcu_pll_clk = { - .name = "mcu_pll", .parent = &ckih_clk, - .set_rate = _clk_pll_set_rate, - .get_rate = _clk_pll_get_rate, + .get_rate = mcu_pll_get_rate, }; static struct clk mcu_main_clk = { - .name = "mcu_main_clk", .parent = &mcu_pll_clk, - .get_rate = _clk_mcu_main_get_rate, + .get_rate = mcu_main_get_rate, }; static struct clk serial_pll_clk = { - .name = "serial_pll", .parent = &ckih_clk, - .set_rate = _clk_pll_set_rate, - .get_rate = _clk_pll_get_rate, - .enable = _clk_serial_pll_enable, - .disable = _clk_serial_pll_disable, + .get_rate = serial_pll_get_rate, + .enable = serial_pll_enable, + .disable = serial_pll_disable, }; static struct clk usb_pll_clk = { - .name = "usb_pll", .parent = &ckih_clk, - .set_rate = _clk_pll_set_rate, - .get_rate = _clk_pll_get_rate, - .enable = _clk_usb_pll_enable, - .disable = _clk_usb_pll_disable, + .get_rate = usb_pll_get_rate, + .enable = usb_pll_enable, + .disable = usb_pll_disable, }; static struct clk ahb_clk = { - .name = "ahb_clk", .parent = &mcu_main_clk, - .get_rate = _clk_hclk_get_rate, -}; - -static struct clk per_clk = { - .name = "per_clk", - .parent = &usb_pll_clk, - .get_rate = _clk_per_get_rate, -}; - -static struct clk perclk_clk = { - .name = "perclk_clk", - .parent = &ipg_clk, -}; - -static struct clk cspi_clk[] = { - { - .name = "cspi_clk", - .id = 0, - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_CSPI1_OFFSET, - .disable = _clk_disable,}, - { - .name = "cspi_clk", - .id = 1, - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_CSPI2_OFFSET, - .disable = _clk_disable,}, - { - .name = "cspi_clk", - .id = 2, - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_CSPI3_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk ipg_clk = { - .name = "ipg_clk", - .parent = &ahb_clk, - .get_rate = _clk_ipg_get_rate, -}; - -static struct clk emi_clk = { - .name = "emi_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_EMI_OFFSET, - .disable = _clk_emi_disable, -}; - -static struct clk gpt_clk = { - .name = "gpt_clk", - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_GPT_OFFSET, - .disable = _clk_disable, -}; - -static struct clk pwm_clk = { - .name = "pwm_clk", - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR1_PWM_OFFSET, - .disable = _clk_disable, -}; - -static struct clk epit_clk[] = { - { - .name = "epit_clk", - .id = 0, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_EPIT1_OFFSET, - .disable = _clk_disable,}, - { - .name = "epit_clk", - .id = 1, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_EPIT2_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk nfc_clk = { - .name = "nfc_clk", - .parent = &ahb_clk, - .get_rate = _clk_nfc_get_rate, -}; - -static struct clk scc_clk = { - .name = "scc_clk", - .parent = &ipg_clk, -}; - -static struct clk ipu_clk = { - .name = "ipu_clk", - .parent = &mcu_main_clk, - .get_rate = _clk_hsp_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_IPU_OFFSET, - .disable = _clk_disable, -}; - -static struct clk kpp_clk = { - .name = "kpp_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_KPP_OFFSET, - .disable = _clk_disable, -}; - -static struct clk wdog_clk = { - .name = "wdog_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_WDOG_OFFSET, - .disable = _clk_disable, -}; -static struct clk rtc_clk = { - .name = "rtc_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_RTC_OFFSET, - .disable = _clk_disable, -}; - -static struct clk usb_clk[] = { - { - .name = "usb_clk", - .parent = &usb_pll_clk, - .get_rate = _clk_usb_get_rate,}, - { - .name = "usb_ahb_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_USBOTG_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk csi_clk = { - .name = "csi_clk", - .parent = &serial_pll_clk, - .get_rate = _clk_csi_get_rate, - .round_rate = _clk_csi_round_rate, - .set_rate = _clk_csi_set_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_CSI_OFFSET, - .disable = _clk_disable, -}; - -static struct clk uart_clk[] = { - { - .name = "uart_clk", - .id = 0, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_UART1_OFFSET, - .disable = _clk_disable,}, - { - .name = "uart_clk", - .id = 1, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_UART2_OFFSET, - .disable = _clk_disable,}, - { - .name = "uart_clk", - .id = 2, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_UART3_OFFSET, - .disable = _clk_disable,}, - { - .name = "uart_clk", - .id = 3, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_UART4_OFFSET, - .disable = _clk_disable,}, - { - .name = "uart_clk", - .id = 4, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_UART5_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk i2c_clk[] = { - { - .name = "i2c_clk", - .id = 0, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_I2C1_OFFSET, - .disable = _clk_disable,}, - { - .name = "i2c_clk", - .id = 1, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_I2C2_OFFSET, - .disable = _clk_disable,}, - { - .name = "i2c_clk", - .id = 2, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_I2C3_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk owire_clk = { - .name = "owire_clk", - .parent = &perclk_clk, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_OWIRE_OFFSET, - .enable = _clk_enable, - .disable = _clk_disable, -}; - -static struct clk sdhc_clk[] = { - { - .name = "sdhc_clk", - .id = 0, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_SD_MMC1_OFFSET, - .disable = _clk_disable,}, - { - .name = "sdhc_clk", - .id = 1, - .parent = &perclk_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_SD_MMC2_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk ssi_clk[] = { - { - .name = "ssi_clk", - .parent = &serial_pll_clk, - .get_rate = _clk_ssi1_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_SSI1_OFFSET, - .disable = _clk_disable,}, - { - .name = "ssi_clk", - .id = 1, - .parent = &serial_pll_clk, - .get_rate = _clk_ssi2_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_SSI2_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk firi_clk = { - .name = "firi_clk", - .parent = &usb_pll_clk, - .round_rate = _clk_firi_round_rate, - .set_rate = _clk_firi_set_rate, - .get_rate = _clk_firi_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_FIRI_OFFSET, - .disable = _clk_disable, -}; - -static struct clk ata_clk = { - .name = "ata_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_ATA_OFFSET, - .disable = _clk_disable, -}; - -static struct clk mbx_clk = { - .name = "mbx_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_GACC_OFFSET, - .get_rate = _clk_mbx_get_rate, -}; - -static struct clk vpu_clk = { - .name = "vpu_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_GACC_OFFSET, - .get_rate = _clk_mbx_get_rate, -}; - -static struct clk rtic_clk = { - .name = "rtic_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR2, - .enable_shift = MXC_CCM_CGR2_RTIC_OFFSET, - .disable = _clk_disable, -}; - -static struct clk rng_clk = { - .name = "rng_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_RNG_OFFSET, - .disable = _clk_disable, -}; - -static struct clk sdma_clk[] = { - { - .name = "sdma_ahb_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_SDMA_OFFSET, - .disable = _clk_disable,}, - { - .name = "sdma_ipg_clk", - .parent = &ipg_clk,} -}; - -static struct clk mpeg4_clk = { - .name = "mpeg4_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_HANTRO_OFFSET, - .disable = _clk_disable, -}; - -static struct clk vl2cc_clk = { - .name = "vl2cc_clk", - .parent = &ahb_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_HANTRO_OFFSET, - .disable = _clk_disable, -}; - -static struct clk mstick_clk[] = { - { - .name = "mstick_clk", - .id = 0, - .parent = &usb_pll_clk, - .get_rate = _clk_mstick1_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_MEMSTICK1_OFFSET, - .disable = _clk_disable,}, - { - .name = "mstick_clk", - .id = 1, - .parent = &usb_pll_clk, - .get_rate = _clk_mstick2_get_rate, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR1, - .enable_shift = MXC_CCM_CGR1_MEMSTICK2_OFFSET, - .disable = _clk_disable,}, -}; - -static struct clk iim_clk = { - .name = "iim_clk", - .parent = &ipg_clk, - .enable = _clk_enable, - .enable_reg = MXC_CCM_CGR0, - .enable_shift = MXC_CCM_CGR0_IIM_OFFSET, - .disable = _clk_disable, -}; - -static unsigned long _clk_cko1_round_rate(struct clk *clk, unsigned long rate) -{ - u32 div, parent = clk_get_rate(clk->parent); - - div = parent / rate; - if (parent % rate) - div++; - - if (div > 8) - div = 16; - else if (div > 4) - div = 8; - else if (div > 2) - div = 4; - - return parent / div; -} - -static int _clk_cko1_set_rate(struct clk *clk, unsigned long rate) -{ - u32 reg, div, parent = clk_get_rate(clk->parent); - - div = parent / rate; - - if (div == 16) - div = 4; - else if (div == 8) - div = 3; - else if (div == 4) - div = 2; - else if (div == 2) - div = 1; - else if (div == 1) - div = 0; - else - return -EINVAL; - - reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOUTDIV_MASK; - reg |= div << MXC_CCM_COSR_CLKOUTDIV_OFFSET; - __raw_writel(reg, MXC_CCM_COSR); - - return 0; -} - -static unsigned long _clk_cko1_get_rate(struct clk *clk) -{ - u32 div; - - div = __raw_readl(MXC_CCM_COSR) & MXC_CCM_COSR_CLKOUTDIV_MASK >> - MXC_CCM_COSR_CLKOUTDIV_OFFSET; - - return clk_get_rate(clk->parent) / (1 << div); -} - -static int _clk_cko1_set_parent(struct clk *clk, struct clk *parent) -{ - u32 reg; - - reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOSEL_MASK; - - if (parent == &mcu_main_clk) - reg |= 0 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &ipg_clk) - reg |= 1 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &usb_pll_clk) - reg |= 2 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == mcu_main_clk.parent) - reg |= 3 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &ahb_clk) - reg |= 5 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &serial_pll_clk) - reg |= 7 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &ckih_clk) - reg |= 8 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &emi_clk) - reg |= 9 << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &ipu_clk) - reg |= 0xA << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &nfc_clk) - reg |= 0xB << MXC_CCM_COSR_CLKOSEL_OFFSET; - else if (parent == &uart_clk[0]) - reg |= 0xC << MXC_CCM_COSR_CLKOSEL_OFFSET; - else - return -EINVAL; - - __raw_writel(reg, MXC_CCM_COSR); - - return 0; -} - -static int _clk_cko1_enable(struct clk *clk) -{ - u32 reg; - - reg = __raw_readl(MXC_CCM_COSR) | MXC_CCM_COSR_CLKOEN; - __raw_writel(reg, MXC_CCM_COSR); + .get_rate = ahb_get_rate, +}; + +#define DEFINE_CLOCK(name, i, er, es, gr, s, p) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = gr, \ + .enable = cgr_enable, \ + .disable = cgr_disable, \ + .secondary = s, \ + .parent = p, \ + } - return 0; -} +#define DEFINE_CLOCK1(name, i, er, es, getsetround, s, p) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = getsetround##_get_rate, \ + .set_rate = getsetround##_set_rate, \ + .round_rate = getsetround##_round_rate, \ + .enable = cgr_enable, \ + .disable = cgr_disable, \ + .secondary = s, \ + .parent = p, \ + } -static void _clk_cko1_disable(struct clk *clk) +DEFINE_CLOCK(perclk_clk, 0, NULL, 0, NULL, NULL, &ipg_clk); + +DEFINE_CLOCK(sdhc1_clk, 0, MXC_CCM_CGR0, 0, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(sdhc2_clk, 1, MXC_CCM_CGR0, 2, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CGR0, 4, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(epit1_clk, 0, MXC_CCM_CGR0, 6, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(epit2_clk, 1, MXC_CCM_CGR0, 8, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(iim_clk, 0, MXC_CCM_CGR0, 10, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(ata_clk, 0, MXC_CCM_CGR0, 12, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(sdma_clk1, 0, MXC_CCM_CGR0, 14, NULL, &sdma_clk1, &ahb_clk); +DEFINE_CLOCK(cspi3_clk, 2, MXC_CCM_CGR0, 16, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(rng_clk, 0, MXC_CCM_CGR0, 18, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(uart1_clk, 0, MXC_CCM_CGR0, 20, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(uart2_clk, 1, MXC_CCM_CGR0, 22, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(ssi1_clk, 0, MXC_CCM_CGR0, 24, ssi1_get_rate, NULL, &serial_pll_clk); +DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CGR0, 26, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CGR0, 28, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(i2c3_clk, 2, MXC_CCM_CGR0, 30, NULL, NULL, &perclk_clk); + +DEFINE_CLOCK(mpeg4_clk, 0, MXC_CCM_CGR1, 0, NULL, NULL, &ahb_clk); +DEFINE_CLOCK(mstick1_clk, 0, MXC_CCM_CGR1, 2, mstick1_get_rate, NULL, &usb_pll_clk); +DEFINE_CLOCK(mstick2_clk, 1, MXC_CCM_CGR1, 4, mstick2_get_rate, NULL, &usb_pll_clk); +DEFINE_CLOCK1(csi_clk, 0, MXC_CCM_CGR1, 6, csi, NULL, &ahb_clk); +DEFINE_CLOCK(rtc_clk, 0, MXC_CCM_CGR1, 8, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(wdog_clk, 0, MXC_CCM_CGR1, 10, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(pwm_clk, 0, MXC_CCM_CGR1, 12, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(usb_clk2, 0, MXC_CCM_CGR1, 18, usb_get_rate, NULL, &ahb_clk); +DEFINE_CLOCK(kpp_clk, 0, MXC_CCM_CGR1, 20, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(ipu_clk, 0, MXC_CCM_CGR1, 22, hsp_get_rate, NULL, &mcu_main_clk); +DEFINE_CLOCK(uart3_clk, 2, MXC_CCM_CGR1, 24, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(uart4_clk, 3, MXC_CCM_CGR1, 26, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(uart5_clk, 4, MXC_CCM_CGR1, 28, NULL, NULL, &perclk_clk); +DEFINE_CLOCK(owire_clk, 0, MXC_CCM_CGR1, 30, NULL, NULL, &perclk_clk); + +DEFINE_CLOCK(ssi2_clk, 1, MXC_CCM_CGR2, 0, ssi2_get_rate, NULL, &serial_pll_clk); +DEFINE_CLOCK(cspi1_clk, 0, MXC_CCM_CGR2, 2, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(cspi2_clk, 1, MXC_CCM_CGR2, 4, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(mbx_clk, 0, MXC_CCM_CGR2, 6, mbx_get_rate, NULL, &ahb_clk); +DEFINE_CLOCK(emi_clk, 0, MXC_CCM_CGR2, 8, NULL, NULL, &ahb_clk); +DEFINE_CLOCK(rtic_clk, 0, MXC_CCM_CGR2, 10, NULL, NULL, &ahb_clk); +DEFINE_CLOCK1(firi_clk, 0, MXC_CCM_CGR2, 12, firi, NULL, &usb_pll_clk); + +DEFINE_CLOCK(sdma_clk2, 0, NULL, 0, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(usb_clk1, 0, NULL, 0, usb_get_rate, NULL, &usb_pll_clk); +DEFINE_CLOCK(nfc_clk, 0, NULL, 0, nfc_get_rate, NULL, &ahb_clk); +DEFINE_CLOCK(scc_clk, 0, NULL, 0, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(ipg_clk, 0, NULL, 0, ipg_get_rate, NULL, &ahb_clk); + +#define _REGISTER_CLOCK(d, n, c) \ + { \ + .dev_id = d, \ + .con_id = n, \ + .clk = &c, \ + }, + +static struct clk_lookup lookups[] __initdata = { + _REGISTER_CLOCK(NULL, "emi", emi_clk) + _REGISTER_CLOCK(NULL, "cspi", cspi1_clk) + _REGISTER_CLOCK(NULL, "cspi", cspi2_clk) + _REGISTER_CLOCK(NULL, "cspi", cspi3_clk) + _REGISTER_CLOCK(NULL, "gpt", gpt_clk) + _REGISTER_CLOCK(NULL, "pwm", pwm_clk) + _REGISTER_CLOCK(NULL, "wdog", wdog_clk) + _REGISTER_CLOCK(NULL, "rtc", rtc_clk) + _REGISTER_CLOCK(NULL, "epit", epit1_clk) + _REGISTER_CLOCK(NULL, "epit", epit2_clk) + _REGISTER_CLOCK("mxc_nand.0", NULL, nfc_clk) + _REGISTER_CLOCK("ipu-core", NULL, ipu_clk) + _REGISTER_CLOCK("mx3_sdc_fb", NULL, ipu_clk) + _REGISTER_CLOCK(NULL, "kpp", kpp_clk) + _REGISTER_CLOCK("fsl-usb2-udc", "usb", usb_clk1) + _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", usb_clk2) + _REGISTER_CLOCK("mx3-camera.0", "csi", csi_clk) + _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk) + _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) + _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) + _REGISTER_CLOCK("imx-i2c.2", NULL, i2c3_clk) + _REGISTER_CLOCK("mxc_w1.0", NULL, owire_clk) + _REGISTER_CLOCK("mxc-mmc.0", NULL, sdhc1_clk) + _REGISTER_CLOCK("mxc-mmc.1", NULL, sdhc2_clk) + _REGISTER_CLOCK(NULL, "ssi", ssi1_clk) + _REGISTER_CLOCK(NULL, "ssi", ssi2_clk) + _REGISTER_CLOCK(NULL, "firi", firi_clk) + _REGISTER_CLOCK(NULL, "ata", ata_clk) + _REGISTER_CLOCK(NULL, "rtic", rtic_clk) + _REGISTER_CLOCK(NULL, "rng", rng_clk) + _REGISTER_CLOCK(NULL, "sdma_ahb", sdma_clk1) + _REGISTER_CLOCK(NULL, "sdma_ipg", sdma_clk2) + _REGISTER_CLOCK(NULL, "mstick", mstick1_clk) + _REGISTER_CLOCK(NULL, "mstick", mstick2_clk) + _REGISTER_CLOCK(NULL, "scc", scc_clk) + _REGISTER_CLOCK(NULL, "iim", iim_clk) + _REGISTER_CLOCK(NULL, "mpeg4", mpeg4_clk) + _REGISTER_CLOCK(NULL, "mbx", mbx_clk) +}; + +int __init mx31_clocks_init(unsigned long fref) { u32 reg; + int i; - reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOEN; - __raw_writel(reg, MXC_CCM_COSR); -} - -static struct clk cko1_clk = { - .name = "cko1_clk", - .get_rate = _clk_cko1_get_rate, - .set_rate = _clk_cko1_set_rate, - .round_rate = _clk_cko1_round_rate, - .set_parent = _clk_cko1_set_parent, - .enable = _clk_cko1_enable, - .disable = _clk_cko1_disable, -}; - -static struct clk *mxc_clks[] = { - &ckih_clk, - &ckil_clk, - &mcu_pll_clk, - &usb_pll_clk, - &serial_pll_clk, - &mcu_main_clk, - &ahb_clk, - &per_clk, - &perclk_clk, - &cko1_clk, - &emi_clk, - &cspi_clk[0], - &cspi_clk[1], - &cspi_clk[2], - &ipg_clk, - &gpt_clk, - &pwm_clk, - &wdog_clk, - &rtc_clk, - &epit_clk[0], - &epit_clk[1], - &nfc_clk, - &ipu_clk, - &kpp_clk, - &usb_clk[0], - &usb_clk[1], - &csi_clk, - &uart_clk[0], - &uart_clk[1], - &uart_clk[2], - &uart_clk[3], - &uart_clk[4], - &i2c_clk[0], - &i2c_clk[1], - &i2c_clk[2], - &owire_clk, - &sdhc_clk[0], - &sdhc_clk[1], - &ssi_clk[0], - &ssi_clk[1], - &firi_clk, - &ata_clk, - &rtic_clk, - &rng_clk, - &sdma_clk[0], - &sdma_clk[1], - &mstick_clk[0], - &mstick_clk[1], - &scc_clk, - &iim_clk, -}; - -int __init mxc_clocks_init(unsigned long fref) -{ - u32 reg; - struct clk **clkp; + mxc_set_cpu_type(MXC_CPU_MX31); ckih_rate = fref; - for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++) - clk_register(*clkp); - - if (cpu_is_mx31()) { - clk_register(&mpeg4_clk); - clk_register(&mbx_clk); - } else { - clk_register(&vpu_clk); - clk_register(&vl2cc_clk); - } + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); /* Turn off all possible clocks */ - __raw_writel(MXC_CCM_CGR0_GPT_MASK, MXC_CCM_CGR0); + __raw_writel((3 << 4), MXC_CCM_CGR0); __raw_writel(0, MXC_CCM_CGR1); - - __raw_writel(MXC_CCM_CGR2_EMI_MASK | - MXC_CCM_CGR2_IPMUX1_MASK | - MXC_CCM_CGR2_IPMUX2_MASK | - MXC_CCM_CGR2_MXCCLKENSEL_MASK | /* for MX32 */ - MXC_CCM_CGR2_CHIKCAMPEN_MASK | /* for MX32 */ - MXC_CCM_CGR2_OVRVPUBUSY_MASK | /* for MX32 */ + __raw_writel((3 << 8) | (3 << 14) | (3 << 16)| 1 << 27 | 1 << 28, /* Bit 27 and 28 are not defined for MX32, but still required to be set */ MXC_CCM_CGR2); - clk_disable(&cko1_clk); - clk_disable(&usb_pll_clk); + usb_pll_disable(&usb_pll_clk); pr_info("Clock input source is %ld\n", clk_get_rate(&ckih_clk)); @@ -1143,6 +598,8 @@ int __init mxc_clocks_init(unsigned long fref) __raw_writel(reg, MXC_CCM_PMCR1); } + mxc_timer_init(&ipg_clk); + return 0; } |