-//kernel/linux-omap-fsample/arch/arm/mach-omap1/clock.c#2 - edit change 3808 (text)
/*
* linux/arch/arm/mach-omap1/clock.c
*
#include <asm/io.h>
#include <asm/mach-types.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/usb.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/sram.h>
+#include <mach/cpu.h>
+#include <mach/usb.h>
+#include <mach/clock.h>
+#include <mach/sram.h>
#include "clock.h"
clk->rate = 12000000;
}
+static void omap1_sossi_recalc(struct clk *clk)
+{
+ u32 div = omap_readl(MOD_CONF_CTRL_1);
+
+ div = (div >> 17) & 0x7;
+ div++;
+ clk->rate = clk->parent->rate / div;
+}
+
static int omap1_clk_enable_dsp_domain(struct clk *clk)
{
int retval;
return -EINVAL;
parent = clk->parent;
- if (unlikely(parent == 0))
+ if (unlikely(parent == NULL))
return -EIO;
realrate = parent->rate;
return 0;
}
+static int omap1_set_sossi_rate(struct clk *clk, unsigned long rate)
+{
+ u32 l;
+ int div;
+ unsigned long p_rate;
+
+ p_rate = clk->parent->rate;
+ /* Round towards slower frequency */
+ div = (p_rate + rate - 1) / rate;
+ div--;
+ if (div < 0 || div > 7)
+ return -EINVAL;
+
+ l = omap_readl(MOD_CONF_CTRL_1);
+ l &= ~(7 << 17);
+ l |= div << 17;
+ omap_writel(l, MOD_CONF_CTRL_1);
+
+ clk->rate = p_rate / (div + 1);
+ if (unlikely(clk->flags & RATE_PROPAGATES))
+ propagate_rate(clk);
+
+ return 0;
+}
+
static long omap1_round_ext_clk_rate(struct clk * clk, unsigned long rate)
{
return 96000000 / calc_ext_dsor(rate);
if (clk->flags & ALWAYS_ENABLED)
return 0;
- if (unlikely(clk->enable_reg == 0)) {
+ if (unlikely(clk->enable_reg == NULL)) {
printk(KERN_ERR "clock.c: Enable for %s without enable code\n",
clk->name);
return -EINVAL;
__u16 regval16;
__u32 regval32;
- if (clk->enable_reg == 0)
+ if (clk->enable_reg == NULL)
return;
if (clk->flags & ENABLE_REG_32BIT) {
return clk->parent->rate / (1 << dsor_exp);
}
- if(clk->round_rate != 0)
+ if (clk->round_rate != NULL)
return clk->round_rate(clk, rate);
return clk->rate;
/* Clocks in the DSP domain need api_ck. Just assume bootloader
* has not enabled any DSP clocks */
- if ((u32)clk->enable_reg == DSP_IDLECT2) {
+ if (clk->enable_reg == DSP_IDLECT2) {
printk(KERN_INFO "Skipping reset check for DSP domain "
"clock \"%s\"\n", clk->name);
return;
/* FIXME: This clock seems to be necessary but no-one
* has asked for its activation. */
- if (clk == &tc2_ck // FIX: pm.c (SRAM), CCP, Camera
- || clk == &ck_dpll1out.clk // FIX: SoSSI, SSR
- || clk == &arm_gpio_ck // FIX: GPIO code for 1510
+ if (clk == &tc2_ck /* FIX: pm.c (SRAM), CCP, Camera */
+ || clk == &ck_dpll1out.clk /* FIX: SoSSI, SSR */
+ || clk == &arm_gpio_ck /* FIX: GPIO code for 1510 */
) {
printk(KERN_INFO "FIXME: Clock \"%s\" seems unused\n",
clk->name);