#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 <mach/common.h>
-#include <asm/div64.h>
#include "crm_regs.h"
}
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);
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)
{
unsigned long reg, ccmr;
- unsigned int prcs, ref_clk;
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;
- }
- return mxc_decode_pll(reg, ref_clk);
+ if (!(ccmr & MXC_CCM_CCMR_MPE) || (ccmr & MXC_CCM_CCMR_MDS))
+ return clk_get_rate(&ckih_clk);
+
+ reg = __raw_readl(MXC_CCM_MPCTL);
+
+ 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;
return 0;
}
-static void _clk_usb_pll_disable(struct clk *clk)
+static void usb_pll_disable(struct clk *clk)
{
u32 reg;
__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;
return 0;
}
-static void _clk_serial_pll_disable(struct clk *clk)
+static void serial_pll_disable(struct clk *clk)
{
u32 reg;
#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);
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;
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;
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;
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;
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;
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;
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;
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);
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;
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;
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;
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);
}
-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);
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;
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;
}
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",
- .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",
- .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",
- .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",
- .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",
- .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",
- .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",
- .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);
-
- return 0;
-}
-
-static void _clk_cko1_disable(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, \
+ }
-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,
-};
+#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 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,
+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;
- struct clk **clkp;
+ int i;
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));
projects / linux-2.6-omap-h63xx.git / commitdiff