#include <linux/io.h>
#include <asm/mach-types.h>
+#include <asm/clkdev.h>
#include <mach/cpu.h>
#include <mach/usb.h>
#include <mach/clock.h>
#include <mach/sram.h>
+static const struct clkops clkops_generic;
+static const struct clkops clkops_uart;
+static const struct clkops clkops_dspck;
+
#include "clock.h"
+static int clk_omap1_dummy_enable(struct clk *clk)
+{
+ return 0;
+}
+
+static void clk_omap1_dummy_disable(struct clk *clk)
+{
+}
+
+static const struct clkops clkops_dummy = {
+ .enable = clk_omap1_dummy_enable,
+ .disable = clk_omap1_dummy_disable,
+};
+
+static struct clk dummy_ck = {
+ .name = "dummy",
+ .ops = &clkops_dummy,
+ .flags = RATE_FIXED,
+};
+
+struct omap_clk {
+ u32 cpu;
+ struct clk_lookup lk;
+};
+
+#define CLK(dev, con, ck, cp) \
+ { \
+ .cpu = cp, \
+ .lk = { \
+ .dev_id = dev, \
+ .con_id = con, \
+ .clk = ck, \
+ }, \
+ }
+
+#define CK_310 (1 << 0)
+#define CK_730 (1 << 1)
+#define CK_1510 (1 << 2)
+#define CK_16XX (1 << 3)
+
+static struct omap_clk omap_clks[] = {
+ /* non-ULPD clocks */
+ CLK(NULL, "ck_ref", &ck_ref, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "ck_dpll1", &ck_dpll1, CK_16XX | CK_1510 | CK_310),
+ /* CK_GEN1 clocks */
+ CLK(NULL, "ck_dpll1out", &ck_dpll1out.clk, CK_16XX),
+ CLK(NULL, "ck_sossi", &sossi_ck, CK_16XX),
+ CLK(NULL, "arm_ck", &arm_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "armper_ck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "arm_gpio_ck", &arm_gpio_ck, CK_1510 | CK_310),
+ CLK(NULL, "armxor_ck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "armtim_ck", &armtim_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK("omap_wdt", "fck", &armwdt_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK("omap_wdt", "ick", &armper_ck.clk, CK_16XX),
+ CLK("omap_wdt", "ick", &dummy_ck, CK_1510 | CK_310),
+ CLK(NULL, "arminth_ck", &arminth_ck1510, CK_1510 | CK_310),
+ CLK(NULL, "arminth_ck", &arminth_ck16xx, CK_16XX),
+ /* CK_GEN2 clocks */
+ CLK(NULL, "dsp_ck", &dsp_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "dspmmu_ck", &dspmmu_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "dspper_ck", &dspper_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "dspxor_ck", &dspxor_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "dsptim_ck", &dsptim_ck, CK_16XX | CK_1510 | CK_310),
+ /* CK_GEN3 clocks */
+ CLK(NULL, "tc_ck", &tc_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_730),
+ CLK(NULL, "tipb_ck", &tipb_ck, CK_1510 | CK_310),
+ CLK(NULL, "l3_ocpi_ck", &l3_ocpi_ck, CK_16XX),
+ CLK(NULL, "tc1_ck", &tc1_ck, CK_16XX),
+ CLK(NULL, "tc2_ck", &tc2_ck, CK_16XX),
+ CLK(NULL, "dma_ck", &dma_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "dma_lcdfree_ck", &dma_lcdfree_ck, CK_16XX),
+ CLK(NULL, "api_ck", &api_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "lb_ck", &lb_ck.clk, CK_1510 | CK_310),
+ CLK(NULL, "rhea1_ck", &rhea1_ck, CK_16XX),
+ CLK(NULL, "rhea2_ck", &rhea2_ck, CK_16XX),
+ CLK(NULL, "lcd_ck", &lcd_ck_16xx, CK_16XX | CK_730),
+ CLK(NULL, "lcd_ck", &lcd_ck_1510.clk, CK_1510 | CK_310),
+ /* ULPD clocks */
+ CLK(NULL, "uart1_ck", &uart1_1510, CK_1510 | CK_310),
+ CLK(NULL, "uart1_ck", &uart1_16xx.clk, CK_16XX),
+ CLK(NULL, "uart2_ck", &uart2_ck, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "uart3_ck", &uart3_1510, CK_1510 | CK_310),
+ CLK(NULL, "uart3_ck", &uart3_16xx.clk, CK_16XX),
+ CLK(NULL, "usb_clko", &usb_clko, CK_16XX | CK_1510 | CK_310),
+ CLK(NULL, "usb_hhc_ck", &usb_hhc_ck1510, CK_1510 | CK_310),
+ CLK(NULL, "usb_hhc_ck", &usb_hhc_ck16xx, CK_16XX),
+ CLK(NULL, "usb_dc_ck", &usb_dc_ck, CK_16XX),
+ CLK(NULL, "mclk", &mclk_1510, CK_1510 | CK_310),
+ CLK(NULL, "mclk", &mclk_16xx, CK_16XX),
+ CLK(NULL, "bclk", &bclk_1510, CK_1510 | CK_310),
+ CLK(NULL, "bclk", &bclk_16xx, CK_16XX),
+ CLK("mmci-omap.0", "fck", &mmc1_ck, CK_16XX | CK_1510 | CK_310),
+ CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK("mmci-omap.1", "fck", &mmc2_ck, CK_16XX),
+ CLK("mmci-omap.1", "ick", &armper_ck.clk, CK_16XX),
+ /* Virtual clocks */
+ CLK(NULL, "mpu", &virtual_ck_mpu, CK_16XX | CK_1510 | CK_310),
+ CLK("i2c_omap.1", "fck", &i2c_fck, CK_16XX | CK_1510 | CK_310),
+ CLK("i2c_omap.1", "ick", &i2c_ick, CK_16XX),
+ CLK("i2c_omap.1", "ick", &dummy_ck, CK_1510 | CK_310),
+ CLK("omap_uwire", "fck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK("omap-mcbsp.1", "ick", &dspper_ck, CK_16XX),
+ CLK("omap-mcbsp.1", "ick", &dummy_ck, CK_1510 | CK_310),
+ CLK("omap-mcbsp.2", "ick", &armper_ck.clk, CK_16XX),
+ CLK("omap-mcbsp.2", "ick", &dummy_ck, CK_1510 | CK_310),
+ CLK("omap-mcbsp.3", "ick", &dspper_ck, CK_16XX),
+ CLK("omap-mcbsp.3", "ick", &dummy_ck, CK_1510 | CK_310),
+ CLK("omap-mcbsp.1", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310),
+ CLK("omap-mcbsp.2", "fck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
+ CLK("omap-mcbsp.3", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310),
+};
+
+static int omap1_clk_enable_generic(struct clk * clk);
+static int omap1_clk_enable(struct clk *clk);
+static void omap1_clk_disable_generic(struct clk * clk);
+static void omap1_clk_disable(struct clk *clk);
+
__u32 arm_idlect1_mask;
/*-------------------------------------------------------------------------
* Omap1 specific clock functions
*-------------------------------------------------------------------------*/
-static void omap1_watchdog_recalc(struct clk *clk, unsigned long parent_rate,
- u8 rate_storage)
+static unsigned long omap1_watchdog_recalc(struct clk *clk)
{
- unsigned long new_rate;
-
- new_rate = parent_rate / 14;
-
- if (rate_storage == CURRENT_RATE)
- clk->rate = new_rate;
- else if (rate_storage == TEMP_RATE)
- clk->temp_rate = new_rate;
+ return clk->parent->rate / 14;
}
-static void omap1_uart_recalc(struct clk *clk, unsigned long parent_rate,
- u8 rate_storage)
+static unsigned long omap1_uart_recalc(struct clk *clk)
{
- unsigned long new_rate;
unsigned int val = __raw_readl(clk->enable_reg);
-
- if (val & clk->enable_bit)
- new_rate = 48000000;
- else
- new_rate = 12000000;
-
- if (rate_storage == CURRENT_RATE)
- clk->rate = new_rate;
- else if (rate_storage == TEMP_RATE)
- clk->temp_rate = new_rate;
+ return val & clk->enable_bit ? 48000000 : 12000000;
}
-static void omap1_sossi_recalc(struct clk *clk, unsigned long parent_rate,
- u8 rate_storage)
+static unsigned long omap1_sossi_recalc(struct clk *clk)
{
- unsigned long new_rate;
u32 div = omap_readl(MOD_CONF_CTRL_1);
div = (div >> 17) & 0x7;
div++;
- new_rate = clk->parent->rate / div;
- if (rate_storage == CURRENT_RATE)
- clk->rate = new_rate;
- else if (rate_storage == TEMP_RATE)
- clk->temp_rate = new_rate;
+ return clk->parent->rate / div;
}
static int omap1_clk_enable_dsp_domain(struct clk *clk)
}
}
+static const struct clkops clkops_dspck = {
+ .enable = &omap1_clk_enable_dsp_domain,
+ .disable = &omap1_clk_disable_dsp_domain,
+};
+
static int omap1_clk_enable_uart_functional(struct clk *clk)
{
int ret;
omap1_clk_disable_generic(clk);
}
+static const struct clkops clkops_uart = {
+ .enable = &omap1_clk_enable_uart_functional,
+ .disable = &omap1_clk_disable_uart_functional,
+};
+
static void omap1_clk_allow_idle(struct clk *clk)
{
struct arm_idlect1_clk * iclk = (struct arm_idlect1_clk *)clk;
struct clk * parent;
unsigned dsor_exp;
- if (unlikely(!(clk->flags & RATE_CKCTL)))
- return -EINVAL;
-
parent = clk->parent;
if (unlikely(parent == NULL))
return -EIO;
return dsor_exp;
}
-static void omap1_ckctl_recalc(struct clk *clk, unsigned long parent_rate,
- u8 rate_storage)
+static unsigned long omap1_ckctl_recalc(struct clk *clk)
{
- int dsor;
- unsigned long new_rate;
-
/* Calculate divisor encoded as 2-bit exponent */
- dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset));
+ int dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset));
- new_rate = parent_rate / dsor;
-
- if (unlikely(clk->rate == new_rate))
- return; /* No change, quick exit */
-
- if (rate_storage == CURRENT_RATE)
- clk->rate = new_rate;
- else if (rate_storage == TEMP_RATE)
- clk->temp_rate = new_rate;
+ return clk->parent->rate / dsor;
}
-static void omap1_ckctl_recalc_dsp_domain(struct clk *clk,
- unsigned long parent_rate,
- u8 rate_storage)
+static unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk)
{
int dsor;
- unsigned long new_rate;
/* Calculate divisor encoded as 2-bit exponent
*
dsor = 1 << (3 & (__raw_readw(DSP_CKCTL) >> clk->rate_offset));
omap1_clk_disable(&api_ck.clk);
- new_rate = parent_rate / dsor;
-
- if (unlikely(clk->rate == new_rate))
- return; /* No change, quick exit */
-
- if (rate_storage == CURRENT_RATE)
- clk->rate = new_rate;
- else if (rate_storage == TEMP_RATE)
- clk->temp_rate = new_rate;
+ return clk->parent->rate / dsor;
}
/* MPU virtual clock functions */
omap_sram_reprogram_clock(ptr->dpllctl_val, ptr->ckctl_val);
ck_dpll1.rate = ptr->pll_rate;
- propagate_rate(&ck_dpll1, CURRENT_RATE);
return 0;
}
static int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate)
{
- int ret = -EINVAL;
- int dsor_exp;
- __u16 regval;
-
- if (clk->flags & RATE_CKCTL) {
- dsor_exp = calc_dsor_exp(clk, rate);
- if (dsor_exp > 3)
- dsor_exp = -EINVAL;
- if (dsor_exp < 0)
- return dsor_exp;
-
- regval = __raw_readw(DSP_CKCTL);
- regval &= ~(3 << clk->rate_offset);
- regval |= dsor_exp << clk->rate_offset;
- __raw_writew(regval, DSP_CKCTL);
- clk->rate = clk->parent->rate / (1 << dsor_exp);
- ret = 0;
- }
+ int dsor_exp;
+ u16 regval;
- return ret;
+ dsor_exp = calc_dsor_exp(clk, rate);
+ if (dsor_exp > 3)
+ dsor_exp = -EINVAL;
+ if (dsor_exp < 0)
+ return dsor_exp;
+
+ regval = __raw_readw(DSP_CKCTL);
+ regval &= ~(3 << clk->rate_offset);
+ regval |= dsor_exp << clk->rate_offset;
+ __raw_writew(regval, DSP_CKCTL);
+ clk->rate = clk->parent->rate / (1 << dsor_exp);
+
+ return 0;
+}
+
+static long omap1_clk_round_rate_ckctl_arm(struct clk *clk, unsigned long rate)
+{
+ int dsor_exp = calc_dsor_exp(clk, rate);
+ if (dsor_exp < 0)
+ return dsor_exp;
+ if (dsor_exp > 3)
+ dsor_exp = 3;
+ return clk->parent->rate / (1 << dsor_exp);
+}
+
+static int omap1_clk_set_rate_ckctl_arm(struct clk *clk, unsigned long rate)
+{
+ int dsor_exp;
+ u16 regval;
+
+ dsor_exp = calc_dsor_exp(clk, rate);
+ if (dsor_exp > 3)
+ dsor_exp = -EINVAL;
+ if (dsor_exp < 0)
+ return dsor_exp;
+
+ regval = omap_readw(ARM_CKCTL);
+ regval &= ~(3 << clk->rate_offset);
+ regval |= dsor_exp << clk->rate_offset;
+ regval = verify_ckctl_value(regval);
+ omap_writew(regval, ARM_CKCTL);
+ clk->rate = clk->parent->rate / (1 << dsor_exp);
+ return 0;
}
static long omap1_round_to_table_rate(struct clk * clk, unsigned long rate)
omap1_clk_deny_idle(clk->parent);
}
- ret = clk->enable(clk);
+ ret = clk->ops->enable(clk);
if (unlikely(ret != 0) && clk->parent) {
omap1_clk_disable(clk->parent);
static void omap1_clk_disable(struct clk *clk)
{
if (clk->usecount > 0 && !(--clk->usecount)) {
- clk->disable(clk);
+ clk->ops->disable(clk);
if (likely(clk->parent)) {
omap1_clk_disable(clk->parent);
if (clk->flags & CLOCK_NO_IDLE_PARENT)
__u16 regval16;
__u32 regval32;
- if (clk->flags & ALWAYS_ENABLED)
- return 0;
-
if (unlikely(clk->enable_reg == NULL)) {
printk(KERN_ERR "clock.c: Enable for %s without enable code\n",
clk->name);
}
}
+static const struct clkops clkops_generic = {
+ .enable = &omap1_clk_enable_generic,
+ .disable = &omap1_clk_disable_generic,
+};
+
static long omap1_clk_round_rate(struct clk *clk, unsigned long rate)
{
- int dsor_exp;
-
- if (clk->flags & RATE_CKCTL) {
- dsor_exp = calc_dsor_exp(clk, rate);
- if (dsor_exp < 0)
- return dsor_exp;
- if (dsor_exp > 3)
- dsor_exp = 3;
- return clk->parent->rate / (1 << dsor_exp);
- }
+ if (clk->flags & RATE_FIXED)
+ return clk->rate;
if (clk->round_rate != NULL)
return clk->round_rate(clk, rate);
static int omap1_clk_set_rate(struct clk *clk, unsigned long rate)
{
int ret = -EINVAL;
- int dsor_exp;
- __u16 regval;
if (clk->set_rate)
ret = clk->set_rate(clk, rate);
- else if (clk->flags & RATE_CKCTL) {
- dsor_exp = calc_dsor_exp(clk, rate);
- if (dsor_exp > 3)
- dsor_exp = -EINVAL;
- if (dsor_exp < 0)
- return dsor_exp;
-
- regval = omap_readw(ARM_CKCTL);
- regval &= ~(3 << clk->rate_offset);
- regval |= dsor_exp << clk->rate_offset;
- regval = verify_ckctl_value(regval);
- omap_writew(regval, ARM_CKCTL);
- clk->rate = clk->parent->rate / (1 << dsor_exp);
- ret = 0;
- }
-
return ret;
}
}
printk(KERN_INFO "Disabling unused clock \"%s\"... ", clk->name);
- clk->disable(clk);
+ clk->ops->disable(clk);
printk(" done\n");
}
int __init omap1_clk_init(void)
{
- struct clk ** clkp;
+ struct omap_clk *c;
const struct omap_clock_config *info;
int crystal_type = 0; /* Default 12 MHz */
- u32 reg;
+ u32 reg, cpu_mask;
#ifdef CONFIG_DEBUG_LL
/* Resets some clocks that may be left on from bootloader,
/* By default all idlect1 clocks are allowed to idle */
arm_idlect1_mask = ~0;
- for (clkp = onchip_clks; clkp < onchip_clks+ARRAY_SIZE(onchip_clks); clkp++) {
- if (((*clkp)->flags &CLOCK_IN_OMAP1510) && cpu_is_omap1510()) {
- clk_register(*clkp);
- continue;
- }
+ for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++)
+ clk_init_one(c->lk.clk);
- if (((*clkp)->flags &CLOCK_IN_OMAP16XX) && cpu_is_omap16xx()) {
- clk_register(*clkp);
- continue;
- }
-
- if (((*clkp)->flags &CLOCK_IN_OMAP730) && cpu_is_omap730()) {
- clk_register(*clkp);
- continue;
- }
-
- if (((*clkp)->flags &CLOCK_IN_OMAP310) && cpu_is_omap310()) {
- clk_register(*clkp);
- continue;
+ cpu_mask = 0;
+ if (cpu_is_omap16xx())
+ cpu_mask |= CK_16XX;
+ if (cpu_is_omap1510())
+ cpu_mask |= CK_1510;
+ if (cpu_is_omap730())
+ cpu_mask |= CK_730;
+ if (cpu_is_omap310())
+ cpu_mask |= CK_310;
+
+ for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++)
+ if (c->cpu & cpu_mask) {
+ clkdev_add(&c->lk);
+ clk_register(c->lk.clk);
}
- }
info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config);
if (info != NULL) {
}
}
}
- propagate_rate(&ck_dpll1, CURRENT_RATE);
#else
/* Find the highest supported frequency and enable it */
if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) {
omap_writew(0x2290, DPLL_CTL);
omap_writew(cpu_is_omap730() ? 0x3005 : 0x1005, ARM_CKCTL);
ck_dpll1.rate = 60000000;
- propagate_rate(&ck_dpll1, CURRENT_RATE);
}
#endif
+ propagate_rate(&ck_dpll1);
/* Cache rates for clocks connected to ck_ref (not dpll1) */
- propagate_rate(&ck_ref, CURRENT_RATE);
+ propagate_rate(&ck_ref);
printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): "
"%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
return 0;
}
-
projects / linux-2.6-omap-h63xx.git / blobdiff