[ARM] omap: fix lots of 'Using plain integer as NULL pointer'

[linux-2.6-omap-h63xx.git] / arch / arm / mach-omap1 / clock.c

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index 638490e62d5f5ebb7e07a21f586c521b9b2f2fe2..90ae0ef37d66f5c1138d9cb95790ee363dcd528b 100644 (file)
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -1,4 +1,3 @@
-//kernel/linux-omap-fsample/arch/arm/mach-omap1/clock.c#2 - edit change 3808 (text)
 /*
  *  linux/arch/arm/mach-omap1/clock.c
  *
@@ -22,10 +21,10 @@
 #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"
 
@@ -49,6 +48,15 @@ static void omap1_uart_recalc(struct clk * clk)
                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;
@@ -193,7 +201,7 @@ static int calc_dsor_exp(struct clk *clk, unsigned long rate)
                return -EINVAL;
 
        parent = clk->parent;
-       if (unlikely(parent == 0))
+       if (unlikely(parent == NULL))
                return -EIO;
 
        realrate = parent->rate;
@@ -396,6 +404,31 @@ static int omap1_set_ext_clk_rate(struct clk * clk, unsigned long 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);
@@ -432,8 +465,7 @@ static int omap1_clk_enable(struct clk *clk)
                        }
 
                        if (clk->flags & CLOCK_NO_IDLE_PARENT)
-                               if (!cpu_is_omap24xx())
-                                       omap1_clk_deny_idle(clk->parent);
+                               omap1_clk_deny_idle(clk->parent);
                }
 
                ret = clk->enable(clk);
@@ -454,8 +486,7 @@ static void omap1_clk_disable(struct clk *clk)
                if (likely(clk->parent)) {
                        omap1_clk_disable(clk->parent);
                        if (clk->flags & CLOCK_NO_IDLE_PARENT)
-                               if (!cpu_is_omap24xx())
-                                       omap1_clk_allow_idle(clk->parent);
+                               omap1_clk_allow_idle(clk->parent);
                }
        }
 }
@@ -468,10 +499,10 @@ static int omap1_clk_enable_generic(struct clk *clk)
        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 0;
+               return -EINVAL;
        }
 
        if (clk->flags & ENABLE_REG_32BIT) {
@@ -504,7 +535,7 @@ static void omap1_clk_disable_generic(struct clk *clk)
        __u16 regval16;
        __u32 regval32;
 
-       if (clk->enable_reg == 0)
+       if (clk->enable_reg == NULL)
                return;
 
        if (clk->flags & ENABLE_REG_32BIT) {
@@ -546,7 +577,7 @@ static long omap1_clk_round_rate(struct clk *clk, unsigned long rate)
                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;
@@ -594,7 +625,7 @@ static void __init omap1_clk_disable_unused(struct clk *clk)
 
        /* 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;
@@ -618,9 +649,9 @@ static void __init omap1_clk_disable_unused(struct clk *clk)
 
        /* 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);
@@ -651,10 +682,18 @@ int __init omap1_clk_init(void)
        int crystal_type = 0; /* Default 12 MHz */
        u32 reg;
 
+#ifdef CONFIG_DEBUG_LL
+       /* Resets some clocks that may be left on from bootloader,
+        * but leaves serial clocks on.
+        */
+       omap_writel(0x3 << 29, MOD_CONF_CTRL_0);
+#endif
+
        /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
        reg = omap_readw(SOFT_REQ_REG) & (1 << 4);
        omap_writew(reg, SOFT_REQ_REG);
-       omap_writew(0, SOFT_REQ_REG2);
+       if (!cpu_is_omap15xx())
+               omap_writew(0, SOFT_REQ_REG2);
 
        clk_init(&omap1_clk_functions);
 
@@ -685,7 +724,7 @@ int __init omap1_clk_init(void)
 
        info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config);
        if (info != NULL) {
-               if (!cpu_is_omap1510())
+               if (!cpu_is_omap15xx())
                        crystal_type = info->system_clock_type;
        }