ARM: OMAP2: clock: Convert to common clk

Convert all OMAP2 specific platform files to use COMMON clk
and keep all the changes under the CONFIG_COMMON_CLK macro check
so it does not break any existing code. At a later point switch
to COMMON clk and get rid of all old/legacy code.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@ti.com>
[paul@pwsan.com: updated to apply]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

10 files changed, 172 insertions, 3 deletions

diff --git a/arch/arm/mach-omap2/clkt2xxx_apll.c b/arch/arm/mach-omap2/clkt2xxx_apll.c
index 8c5b13e7ee61..1bd15275dbf9 100644
--- a/arch/arm/mach-omap2/clkt2xxx_apll.c
+++ b/arch/arm/mach-omap2/clkt2xxx_apll.c
@@ -38,48 +38,90 @@
 
 /* Private functions */
 
+#ifdef CONFIG_COMMON_CLK
+int omap2_clk_apll96_enable(struct clk_hw *hw)
+#else
 static int _apll96_enable(struct clk *clk)
+#endif
 {
         return omap2xxx_cm_apll96_enable();
 }
 
+#ifdef CONFIG_COMMON_CLK
+int omap2_clk_apll54_enable(struct clk_hw *hw)
+#else
 static int _apll54_enable(struct clk *clk)
+#endif
 {
         return omap2xxx_cm_apll54_enable();
 }
 
+#ifdef CONFIG_COMMON_CLK
+static void _apll96_allow_idle(struct clk_hw_omap *clk)
+#else
 static void _apll96_allow_idle(struct clk *clk)
+#endif
 {
         omap2xxx_cm_set_apll96_auto_low_power_stop();
 }
 
+#ifdef CONFIG_COMMON_CLK
+static void _apll96_deny_idle(struct clk_hw_omap *clk)
+#else
 static void _apll96_deny_idle(struct clk *clk)
+#endif
 {
         omap2xxx_cm_set_apll96_disable_autoidle();
 }
 
+#ifdef CONFIG_COMMON_CLK
+static void _apll54_allow_idle(struct clk_hw_omap *clk)
+#else
 static void _apll54_allow_idle(struct clk *clk)
+#endif
 {
         omap2xxx_cm_set_apll54_auto_low_power_stop();
 }
 
+#ifdef CONFIG_COMMON_CLK
+static void _apll54_deny_idle(struct clk_hw_omap *clk)
+#else
 static void _apll54_deny_idle(struct clk *clk)
+#endif
 {
         omap2xxx_cm_set_apll54_disable_autoidle();
 }
 
+#ifdef CONFIG_COMMON_CLK
+void omap2_clk_apll96_disable(struct clk_hw *hw)
+#else
 static void _apll96_disable(struct clk *clk)
+#endif
 {
         omap2xxx_cm_apll96_disable();
 }
 
+#ifdef CONFIG_COMMON_CLK
+void omap2_clk_apll54_disable(struct clk_hw *hw)
+#else
 static void _apll54_disable(struct clk *clk)
+#endif
 {
         omap2xxx_cm_apll54_disable();
 }
 
 /* Public data */
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_apll54 = {
+        .allow_idle     = _apll54_allow_idle,
+        .deny_idle      = _apll54_deny_idle,
+};
 
+const struct clk_hw_omap_ops clkhwops_apll96 = {
+        .allow_idle     = _apll96_allow_idle,
+        .deny_idle      = _apll96_deny_idle,
+};
+#else
 const struct clkops clkops_apll96 = {
         .enable         = _apll96_enable,
         .disable        = _apll96_disable,
@@ -93,6 +135,7 @@ const struct clkops clkops_apll54 = {
         .allow_idle     = _apll54_allow_idle,
         .deny_idle      = _apll54_deny_idle,
 };
+#endif
 
 /* Public functions */
 
diff --git a/arch/arm/mach-omap2/clkt2xxx_dpll.c b/arch/arm/mach-omap2/clkt2xxx_dpll.c
index 399534c7843b..d0fd77b67261 100644
--- a/arch/arm/mach-omap2/clkt2xxx_dpll.c
+++ b/arch/arm/mach-omap2/clkt2xxx_dpll.c
@@ -29,7 +29,11 @@
  * REVISIT: DPLL can optionally enter low-power bypass by writing 0x1
  * instead.  Add some mechanism to optionally enter this mode.
  */
+#ifdef CONFIG_COMMON_CLK
+static void _allow_idle(struct clk_hw_omap *clk)
+#else
 static void _allow_idle(struct clk *clk)
+#endif
 {
         if (!clk || !clk->dpll_data)
                 return;
@@ -43,7 +47,11 @@ static void _allow_idle(struct clk *clk)
  *
  * Disable DPLL automatic idle control.  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void _deny_idle(struct clk_hw_omap *clk)
+#else
 static void _deny_idle(struct clk *clk)
+#endif
 {
         if (!clk || !clk->dpll_data)
                 return;
@@ -53,9 +61,15 @@ static void _deny_idle(struct clk *clk)
 
 
 /* Public data */
-
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll = {
+        .allow_idle     = _allow_idle,
+        .deny_idle      = _deny_idle,
+};
+#else
 const struct clkops clkops_omap2xxx_dpll_ops = {
         .allow_idle     = _allow_idle,
         .deny_idle      = _deny_idle,
 };
+#endif
 
diff --git a/arch/arm/mach-omap2/clkt2xxx_dpllcore.c b/arch/arm/mach-omap2/clkt2xxx_dpllcore.c
index e687163a68fe..9d8388b7ee97 100644
--- a/arch/arm/mach-omap2/clkt2xxx_dpllcore.c
+++ b/arch/arm/mach-omap2/clkt2xxx_dpllcore.c
@@ -41,7 +41,11 @@
  * (currently defined as "dpll_ck" in the OMAP2xxx clock tree).  Set
  * during dpll_ck init and used later by omap2xxx_clk_get_core_rate().
  */
+#ifdef CONFIG_COMMON_CLK
+static struct clk_hw_omap *dpll_core_ck;
+#else
 static struct clk *dpll_core_ck;
+#endif
 
 /**
  * omap2xxx_clk_get_core_rate - return the CORE_CLK rate
@@ -105,13 +109,25 @@ static long omap2_dpllcore_round_rate(unsigned long target_rate)
 
 }
 
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2_dpllcore_recalc(struct clk_hw *hw,
+                                    unsigned long parent_rate)
+#else
 unsigned long omap2_dpllcore_recalc(struct clk *clk)
+#endif
 {
         return omap2xxx_clk_get_core_rate();
 }
 
+#ifdef CONFIG_COMMON_CLK
+int omap2_reprogram_dpllcore(struct clk_hw *hw, unsigned long rate,
+                             unsigned long parent_rate)
+{
+        struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
 int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
 {
+#endif
         u32 cur_rate, low, mult, div, valid_rate, done_rate;
         u32 bypass = 0;
         struct prcm_config tmpset;
@@ -189,8 +205,16 @@ int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
  * statically defined, this code may need to change to increment some
  * kind of use count on dpll_ck.
  */
+#ifdef CONFIG_COMMON_CLK
+void omap2xxx_clkt_dpllcore_init(struct clk_hw *hw)
+#else
 void omap2xxx_clkt_dpllcore_init(struct clk *clk)
+#endif
 {
         WARN(dpll_core_ck, "dpll_core_ck already set - should never happen");
+#ifdef CONFIG_COMMON_CLK
+        dpll_core_ck = to_clk_hw_omap(hw);
+#else
         dpll_core_ck = clk;
+#endif
 }
diff --git a/arch/arm/mach-omap2/clkt2xxx_osc.c b/arch/arm/mach-omap2/clkt2xxx_osc.c
index e1777371bb5e..395e0c1b9d0c 100644
--- a/arch/arm/mach-omap2/clkt2xxx_osc.c
+++ b/arch/arm/mach-omap2/clkt2xxx_osc.c
@@ -35,7 +35,11 @@
  * clk_enable/clk_disable()-based usecounting for osc_ck should be
  * replaced with autoidle-based usecounting.
  */
+#ifdef CONFIG_COMMON_CLK
+int omap2_enable_osc_ck(struct clk_hw *clk)
+#else
 static int omap2_enable_osc_ck(struct clk *clk)
+#endif
 {
         u32 pcc;
 
@@ -53,7 +57,11 @@ static int omap2_enable_osc_ck(struct clk *clk)
  * clk_enable/clk_disable()-based usecounting for osc_ck should be
  * replaced with autoidle-based usecounting.
  */
+#ifdef CONFIG_COMMON_CLK
+void omap2_disable_osc_ck(struct clk_hw *clk)
+#else
 static void omap2_disable_osc_ck(struct clk *clk)
+#endif
 {
         u32 pcc;
 
@@ -62,12 +70,19 @@ static void omap2_disable_osc_ck(struct clk *clk)
         __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
 }
 
+#ifndef CONFIG_COMMON_CLK
 const struct clkops clkops_oscck = {
         .enable         = omap2_enable_osc_ck,
         .disable        = omap2_disable_osc_ck,
 };
+#endif
 
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2_osc_clk_recalc(struct clk_hw *clk,
+                                   unsigned long parent_rate)
+#else
 unsigned long omap2_osc_clk_recalc(struct clk *clk)
+#endif
 {
         return omap2xxx_get_apll_clkin() * omap2xxx_get_sysclkdiv();
 }
diff --git a/arch/arm/mach-omap2/clkt2xxx_sys.c b/arch/arm/mach-omap2/clkt2xxx_sys.c
index 46683b3c2461..e6e73cf6aa95 100644
--- a/arch/arm/mach-omap2/clkt2xxx_sys.c
+++ b/arch/arm/mach-omap2/clkt2xxx_sys.c
@@ -40,9 +40,16 @@ u32 omap2xxx_get_sysclkdiv(void)
         return div;
 }
 
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk,
+                                      unsigned long parent_rate)
+{
+        return parent_rate / omap2xxx_get_sysclkdiv();
+}
+#else
 unsigned long omap2xxx_sys_clk_recalc(struct clk *clk)
 {
         return clk->parent->rate / omap2xxx_get_sysclkdiv();
 }
-
+#endif
 
diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
index b9b981bac9d3..9a79ffaf6be5 100644
--- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
+++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
@@ -59,7 +59,12 @@ static unsigned long sys_ck_rate;
  *
  * Set virt_prcm_set's rate to the mpu_speed field of the current PRCM set.
  */
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
+                                     unsigned long parent_rate)
+#else
 unsigned long omap2_table_mpu_recalc(struct clk *clk)
+#endif
 {
         return curr_prcm_set->mpu_speed;
 }
@@ -71,7 +76,12 @@ unsigned long omap2_table_mpu_recalc(struct clk *clk)
  * Some might argue L3-DDR, others ARM, others IVA. This code is simple and
  * just uses the ARM rates.
  */
+#ifdef CONFIG_COMMON_CLK
+long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
+                               unsigned long *parent_rate)
+#else
 long omap2_round_to_table_rate(struct clk *clk, unsigned long rate)
+#endif
 {
         const struct prcm_config *ptr;
         long highest_rate;
@@ -94,7 +104,12 @@ long omap2_round_to_table_rate(struct clk *clk, unsigned long rate)
 }
 
 /* Sets basic clocks based on the specified rate */
+#ifdef CONFIG_COMMON_CLK
+int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
+                            unsigned long parent_rate)
+#else
 int omap2_select_table_rate(struct clk *clk, unsigned long rate)
+#endif
 {
         u32 cur_rate, done_rate, bypass = 0, tmp;
         const struct prcm_config *prcm;
diff --git a/arch/arm/mach-omap2/clock2430.c b/arch/arm/mach-omap2/clock2430.c
index e37df538bcd3..7a61d7842968 100644
--- a/arch/arm/mach-omap2/clock2430.c
+++ b/arch/arm/mach-omap2/clock2430.c
@@ -40,7 +40,11 @@
  * passes back the correct CM_IDLEST register address for I2CHS
  * modules.  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void omap2430_clk_i2chs_find_idlest(struct clk_hw_omap *clk,
+#else
 static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
+#endif
                                            void __iomem **idlest_reg,
                                            u8 *idlest_bit,
                                            u8 *idlest_val)
@@ -51,9 +55,16 @@ static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
 }
 
 /* 2430 I2CHS has non-standard IDLEST register */
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait = {
+        .find_idlest    = omap2430_clk_i2chs_find_idlest,
+        .find_companion = omap2_clk_dflt_find_companion,
+};
+#else
 const struct clkops clkops_omap2430_i2chs_wait = {
         .enable         = omap2_dflt_clk_enable,
         .disable        = omap2_dflt_clk_disable,
         .find_idlest    = omap2430_clk_i2chs_find_idlest,
         .find_companion = omap2_clk_dflt_find_companion,
 };
+#endif
diff --git a/arch/arm/mach-omap2/clock2xxx.c b/arch/arm/mach-omap2/clock2xxx.c
index 5f7faeb4c19b..1ff646908627 100644
--- a/arch/arm/mach-omap2/clock2xxx.c
+++ b/arch/arm/mach-omap2/clock2xxx.c
@@ -28,6 +28,7 @@
 #include "cm.h"
 #include "cm-regbits-24xx.h"
 
+struct clk_hw *dclk_hw;
 /*
  * Omap24xx specific clock functions
  */
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index ce809c913b6f..58581511d795 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -8,6 +8,26 @@
 #ifndef __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
 #define __ARCH_ARM_MACH_OMAP2_CLOCK2XXX_H
 
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#include "clock.h"
+
+unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
+                                     unsigned long parent_rate);
+int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
+                            unsigned long parent_rate);
+long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
+                               unsigned long *parent_rate);
+unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk,
+                                      unsigned long parent_rate);
+unsigned long omap2_osc_clk_recalc(struct clk_hw *clk,
+                                   unsigned long parent_rate);
+unsigned long omap2_dpllcore_recalc(struct clk_hw *hw,
+                                    unsigned long parent_rate);
+int omap2_reprogram_dpllcore(struct clk_hw *clk, unsigned long rate,
+                             unsigned long parent_rate);
+void omap2xxx_clkt_dpllcore_init(struct clk_hw *hw);
+#else
 unsigned long omap2_table_mpu_recalc(struct clk *clk);
 int omap2_select_table_rate(struct clk *clk, unsigned long rate);
 long omap2_round_to_table_rate(struct clk *clk, unsigned long rate);
@@ -15,11 +35,12 @@ unsigned long omap2xxx_sys_clk_recalc(struct clk *clk);
 unsigned long omap2_osc_clk_recalc(struct clk *clk);
 unsigned long omap2_dpllcore_recalc(struct clk *clk);
 int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate);
+void omap2xxx_clkt_dpllcore_init(struct clk *clk);
+#endif
 unsigned long omap2xxx_clk_get_core_rate(void);
 u32 omap2xxx_get_apll_clkin(void);
 u32 omap2xxx_get_sysclkdiv(void);
 void omap2xxx_clk_prepare_for_reboot(void);
-void omap2xxx_clkt_dpllcore_init(struct clk *clk);
 void omap2xxx_clkt_vps_check_bootloader_rates(void);
 void omap2xxx_clkt_vps_late_init(void);
 
@@ -37,9 +58,19 @@ int omap2430_clk_init(void);
 
 extern void __iomem *prcm_clksrc_ctrl;
 
+#ifdef CONFIG_COMMON_CLK
+extern struct clk_hw *dclk_hw;
+int omap2_enable_osc_ck(struct clk_hw *hw);
+void omap2_disable_osc_ck(struct clk_hw *hw);
+int omap2_clk_apll96_enable(struct clk_hw *hw);
+int omap2_clk_apll54_enable(struct clk_hw *hw);
+void omap2_clk_apll96_disable(struct clk_hw *hw);
+void omap2_clk_apll54_disable(struct clk_hw *hw);
+#else
 extern const struct clkops clkops_omap2430_i2chs_wait;
 extern const struct clkops clkops_oscck;
 extern const struct clkops clkops_apll96;
 extern const struct clkops clkops_apll54;
+#endif
 
 #endif
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c
index 83815ddc4786..87ae36c7e155 100644
--- a/arch/arm/mach-omap2/pm24xx.c
+++ b/arch/arm/mach-omap2/pm24xx.c
@@ -25,7 +25,11 @@
 #include <linux/sysfs.h>
 #include <linux/module.h>
 #include <linux/delay.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#else
 #include <linux/clk.h>
+#endif
 #include <linux/irq.h>
 #include <linux/time.h>
 #include <linux/gpio.h>
@@ -202,7 +206,11 @@ static int omap2_can_sleep(void)
 {
         if (omap2_fclks_active())
                 return 0;
+#ifdef CONFIG_COMMON_CLK
+        if (__clk_is_enabled(osc_ck))
+#else
         if (osc_ck->usecount > 1)
+#endif
                 return 0;
         if (omap_dma_running())
                 return 0;