Merge branches 'clks' and 'pnx' into devel

1 files changed, 91 insertions, 82 deletions

diff --git a/arch/arm/mach-pnx4008/clock.c b/arch/arm/mach-pnx4008/clock.c
index 898c0e88acbc..9d1975fa4d9f 100644
--- a/arch/arm/mach-pnx4008/clock.c
+++ b/arch/arm/mach-pnx4008/clock.c
@@ -22,8 +22,9 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 
-#include <mach/hardware.h>
+#include <asm/clkdev.h>
 
+#include <mach/hardware.h>
 #include <mach/clock.h>
 #include "clock.h"
 
@@ -56,18 +57,19 @@ static void propagate_rate(struct clk *clk)
         }
 }
 
-static inline void clk_reg_disable(struct clk *clk)
+static void clk_reg_disable(struct clk *clk)
 {
         if (clk->enable_reg)
                 __raw_writel(__raw_readl(clk->enable_reg) &
                              ~(1 << clk->enable_shift), clk->enable_reg);
 }
 
-static inline void clk_reg_enable(struct clk *clk)
+static int clk_reg_enable(struct clk *clk)
 {
         if (clk->enable_reg)
                 __raw_writel(__raw_readl(clk->enable_reg) |
                              (1 << clk->enable_shift), clk->enable_reg);
+        return 0;
 }
 
 static inline void clk_reg_disable1(struct clk *clk)
@@ -636,31 +638,34 @@ static struct clk flash_ck = {
 static struct clk i2c0_ck = {
         .name = "i2c0_ck",
         .parent = &per_ck,
-        .flags = NEEDS_INITIALIZATION,
-        .round_rate = &on_off_round_rate,
-        .set_rate = &on_off_set_rate,
+        .flags = NEEDS_INITIALIZATION | FIXED_RATE,
         .enable_shift = 0,
         .enable_reg = I2CCLKCTRL_REG,
+        .rate = 13000000,
+        .enable = clk_reg_enable,
+        .disable = clk_reg_disable,
 };
 
 static struct clk i2c1_ck = {
         .name = "i2c1_ck",
         .parent = &per_ck,
-        .flags = NEEDS_INITIALIZATION,
-        .round_rate = &on_off_round_rate,
-        .set_rate = &on_off_set_rate,
+        .flags = NEEDS_INITIALIZATION | FIXED_RATE,
         .enable_shift = 1,
         .enable_reg = I2CCLKCTRL_REG,
+        .rate = 13000000,
+        .enable = clk_reg_enable,
+        .disable = clk_reg_disable,
 };
 
 static struct clk i2c2_ck = {
         .name = "i2c2_ck",
         .parent = &per_ck,
-        .flags = NEEDS_INITIALIZATION,
-        .round_rate = &on_off_round_rate,
-        .set_rate = &on_off_set_rate,
+        .flags = NEEDS_INITIALIZATION | FIXED_RATE,
         .enable_shift = 2,
         .enable_reg = USB_OTG_CLKCTRL_REG,
+        .rate = 13000000,
+        .enable = clk_reg_enable,
+        .disable = clk_reg_disable,
 };
 
 static struct clk spi0_ck = {
@@ -738,16 +743,16 @@ static struct clk wdt_ck = {
         .name = "wdt_ck",
         .parent = &per_ck,
         .flags = NEEDS_INITIALIZATION,
-        .round_rate = &on_off_round_rate,
-        .set_rate = &on_off_set_rate,
         .enable_shift = 0,
         .enable_reg = TIMCLKCTRL_REG,
+        .enable = clk_reg_enable,
+        .disable = clk_reg_disable,
 };
 
 /* These clocks are visible outside this module
  * and can be initialized
  */
-static struct clk *onchip_clks[] = {
+static struct clk *onchip_clks[] __initdata = {
         &ck_13MHz,
         &ck_pll1,
         &ck_pll4,
@@ -777,49 +782,74 @@ static struct clk *onchip_clks[] = {
         &wdt_ck,
 };
 
-static int local_clk_enable(struct clk *clk)
-{
-        int ret = 0;
-
-        if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
-            && clk->user_rate)
-                ret = clk->set_rate(clk, clk->user_rate);
-        return ret;
-}
+static struct clk_lookup onchip_clkreg[] = {
+        { .clk = &ck_13MHz,     .con_id = "ck_13MHz"    },
+        { .clk = &ck_pll1,      .con_id = "ck_pll1"     },
+        { .clk = &ck_pll4,      .con_id = "ck_pll4"     },
+        { .clk = &ck_pll5,      .con_id = "ck_pll5"     },
+        { .clk = &ck_pll3,      .con_id = "ck_pll3"     },
+        { .clk = &vfp9_ck,      .con_id = "vfp9_ck"     },
+        { .clk = &m2hclk_ck,    .con_id = "m2hclk_ck"   },
+        { .clk = &hclk_ck,      .con_id = "hclk_ck"     },
+        { .clk = &dma_ck,       .con_id = "dma_ck"      },
+        { .clk = &flash_ck,     .con_id = "flash_ck"    },
+        { .clk = &dum_ck,       .con_id = "dum_ck"      },
+        { .clk = &keyscan_ck,   .con_id = "keyscan_ck"  },
+        { .clk = &pwm1_ck,      .con_id = "pwm1_ck"     },
+        { .clk = &pwm2_ck,      .con_id = "pwm2_ck"     },
+        { .clk = &jpeg_ck,      .con_id = "jpeg_ck"     },
+        { .clk = &ms_ck,        .con_id = "ms_ck"       },
+        { .clk = &touch_ck,     .con_id = "touch_ck"    },
+        { .clk = &i2c0_ck,      .dev_id = "pnx-i2c.0"   },
+        { .clk = &i2c1_ck,      .dev_id = "pnx-i2c.1"   },
+        { .clk = &i2c2_ck,      .dev_id = "pnx-i2c.2"   },
+        { .clk = &spi0_ck,      .con_id = "spi0_ck"     },
+        { .clk = &spi1_ck,      .con_id = "spi1_ck"     },
+        { .clk = &uart3_ck,     .con_id = "uart3_ck"    },
+        { .clk = &uart4_ck,     .con_id = "uart4_ck"    },
+        { .clk = &uart5_ck,     .con_id = "uart5_ck"    },
+        { .clk = &uart6_ck,     .con_id = "uart6_ck"    },
+        { .clk = &wdt_ck,       .dev_id = "pnx4008-watchdog" },
+};
 
 static void local_clk_disable(struct clk *clk)
 {
-        if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
-                clk->set_rate(clk, 0);
-}
+        if (WARN_ON(clk->usecount == 0))
+                return;
 
-static void local_clk_unuse(struct clk *clk)
-{
-        if (clk->usecount > 0 && !(--clk->usecount)) {
-                local_clk_disable(clk);
+        if (!(--clk->usecount)) {
+                if (clk->disable)
+                        clk->disable(clk);
+                else if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
+                        clk->set_rate(clk, 0);
                 if (clk->parent)
-                        local_clk_unuse(clk->parent);
+                        local_clk_disable(clk->parent);
         }
 }
 
-static int local_clk_use(struct clk *clk)
+static int local_clk_enable(struct clk *clk)
 {
         int ret = 0;
-        if (clk->usecount++ == 0) {
-                if (clk->parent)
-                        ret = local_clk_use(clk->parent);
 
-                if (ret != 0) {
-                        clk->usecount--;
-                        goto out;
+        if (clk->usecount == 0) {
+                if (clk->parent) {
+                        ret = local_clk_enable(clk->parent);
+                        if (ret != 0)
+                                goto out;
                 }
 
-                ret = local_clk_enable(clk);
+                if (clk->enable)
+                        ret = clk->enable(clk);
+                else if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
+                            && clk->user_rate)
+                        ret = clk->set_rate(clk, clk->user_rate);
 
                 if (ret != 0 && clk->parent) {
-                        local_clk_unuse(clk->parent);
-                        clk->usecount--;
+                        local_clk_disable(clk->parent);
+                        goto out;
                 }
+
+                clk->usecount++;
         }
 out:
         return ret;
@@ -866,35 +896,6 @@ out:
 
 EXPORT_SYMBOL(clk_set_rate);
 
-struct clk *clk_get(struct device *dev, const char *id)
-{
-        struct clk *clk = ERR_PTR(-ENOENT);
-        struct clk **clkp;
-
-        clock_lock();
-        for (clkp = onchip_clks; clkp < onchip_clks + ARRAY_SIZE(onchip_clks);
-             clkp++) {
-                if (strcmp(id, (*clkp)->name) == 0
-                    && try_module_get((*clkp)->owner)) {
-                        clk = (*clkp);
-                        break;
-                }
-        }
-        clock_unlock();
-
-        return clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-        clock_lock();
-        if (clk && !IS_ERR(clk))
-                module_put(clk->owner);
-        clock_unlock();
-}
-EXPORT_SYMBOL(clk_put);
-
 unsigned long clk_get_rate(struct clk *clk)
 {
         unsigned long ret;
@@ -907,10 +908,10 @@ EXPORT_SYMBOL(clk_get_rate);
 
 int clk_enable(struct clk *clk)
 {
-        int ret = 0;
+        int ret;
 
         clock_lock();
-        ret = local_clk_use(clk);
+        ret = local_clk_enable(clk);
         clock_unlock();
         return ret;
 }
@@ -920,7 +921,7 @@ EXPORT_SYMBOL(clk_enable);
 void clk_disable(struct clk *clk)
 {
         clock_lock();
-        local_clk_unuse(clk);
+        local_clk_disable(clk);
         clock_unlock();
 }
 
@@ -967,18 +968,24 @@ static int __init clk_init(void)
 
         for (clkp = onchip_clks; clkp < onchip_clks + ARRAY_SIZE(onchip_clks);
              clkp++) {
-                if (((*clkp)->flags & NEEDS_INITIALIZATION)
-                    && ((*clkp)->set_rate)) {
-                        (*clkp)->user_rate = (*clkp)->rate;
-                        local_set_rate((*clkp), (*clkp)->user_rate);
-                        if ((*clkp)->set_parent)
-                                (*clkp)->set_parent((*clkp), (*clkp)->parent);
+                struct clk *clk = *clkp;
+                if (clk->flags & NEEDS_INITIALIZATION) {
+                        if (clk->set_rate) {
+                                clk->user_rate = clk->rate;
+                                local_set_rate(clk, clk->user_rate);
+                                if (clk->set_parent)
+                                        clk->set_parent(clk, clk->parent);
+                        }
+                        if (clk->enable && clk->usecount)
+                                clk->enable(clk);
+                        if (clk->disable && !clk->usecount)
+                                clk->disable(clk);
                 }
                 pr_debug("%s: clock %s, rate %ld\n",
-                        __func__, (*clkp)->name, (*clkp)->rate);
+                        __func__, clk->name, clk->rate);
         }
 
-        local_clk_use(&ck_pll4);
+        local_clk_enable(&ck_pll4);
 
         /* if ck_13MHz is not used, disable it. */
         if (ck_13MHz.usecount == 0)
@@ -987,6 +994,8 @@ static int __init clk_init(void)
         /* Disable autoclocking */
         __raw_writeb(0xff, AUTOCLK_CTRL);
 
+        clkdev_add_table(onchip_clkreg, ARRAY_SIZE(onchip_clkreg));
+
         return 0;
 }