ARM: OMAP3: clock: Convert to common clk

Convert all OMAP3 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: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NMike Turquette <mturquette@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/clkt34xx_dpll3m2.c

@@ -45,8 +45,15 @@
  * Program the DPLL M2 divider with the rounded target rate.  Returns
  * -EINVAL upon error, or 0 upon success.
  */
+#ifdef CONFIG_COMMON_CLK
+int omap3_core_dpll_m2_set_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long parent_rate)
+{
+	struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
 int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
 {
+#endif
 	u32 new_div = 0;
 	u32 unlock_dll = 0;
 	u32 c;
@@ -64,7 +71,11 @@ int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
 		return -EINVAL;
 
 	sdrcrate = __clk_get_rate(sdrc_ick_p);
+#ifdef CONFIG_COMMON_CLK
+	clkrate = __clk_get_rate(hw->clk);
+#else
 	clkrate = __clk_get_rate(clk);
+#endif
 	if (rate > clkrate)
 		sdrcrate <<= ((rate / clkrate) >> 1);
 	else
@@ -113,7 +124,9 @@ int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
 				  sdrc_cs0->rfr_ctrl, sdrc_cs0->actim_ctrla,
 				  sdrc_cs0->actim_ctrlb, sdrc_cs0->mr,
 				  0, 0, 0, 0);
+#ifndef CONFIG_COMMON_CLK
 	clk->rate = rate;
+#endif
 
 	return 0;
 }

arch/arm/mach-omap2/clkt_iclk.c

@@ -27,7 +27,11 @@
 /* Private functions */
 
 /* XXX */
+#ifdef CONFIG_COMMON_CLK
+void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk)
+#else
 void omap2_clkt_iclk_allow_idle(struct clk *clk)
+#endif
 {
 	u32 v, r;
 
@@ -39,7 +43,11 @@ void omap2_clkt_iclk_allow_idle(struct clk *clk)
 }
 
 /* XXX */
+#ifdef CONFIG_COMMON_CLK
+void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk)
+#else
 void omap2_clkt_iclk_deny_idle(struct clk *clk)
+#endif
 {
 	u32 v, r;
 
@@ -53,6 +61,11 @@ void omap2_clkt_iclk_deny_idle(struct clk *clk)
 /* Public data */
 
 #ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_iclk = {
+	.allow_idle	= omap2_clkt_iclk_allow_idle,
+	.deny_idle	= omap2_clkt_iclk_deny_idle,
+};
+
 const struct clk_hw_omap_ops clkhwops_iclk_wait = {
 	.allow_idle	= omap2_clkt_iclk_allow_idle,
 	.deny_idle	= omap2_clkt_iclk_deny_idle,

arch/arm/mach-omap2/clock.h

@@ -509,8 +509,13 @@ int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
 #endif
 
 /* clkt_iclk.c public functions */
+#ifdef CONFIG_COMMON_CLK
+extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
+extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
+#else
 extern void omap2_clkt_iclk_allow_idle(struct clk *clk);
 extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
+#endif
 
 #ifdef CONFIG_COMMON_CLK
 u8 omap2_init_dpll_parent(struct clk_hw *hw);
@@ -561,8 +566,20 @@ extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
 extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
 extern const struct clk_hw_omap_ops clkhwops_wait;
 extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
-#endif
-
+extern const struct clk_hw_omap_ops clkhwops_iclk;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait;
+extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait;
+extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait;
+extern const struct clk_hw_omap_ops clkhwops_apll54;
+extern const struct clk_hw_omap_ops clkhwops_apll96;
+extern const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll;
+extern const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait;
+#else
 extern const struct clkops clkops_omap2_iclk_dflt_wait;
 extern const struct clkops clkops_omap2_iclk_dflt;
 extern const struct clkops clkops_omap2_iclk_idle_only;
@@ -571,6 +588,7 @@ extern const struct clkops clkops_omap2xxx_dpll_ops;
 extern const struct clkops clkops_omap3_noncore_dpll_ops;
 extern const struct clkops clkops_omap3_core_dpll_ops;
 extern const struct clkops clkops_omap4_dpllmx_ops;
+#endif /* CONFIG_COMMON_CLK */
 
 /* clksel_rate blocks shared between OMAP44xx and AM33xx */
 extern const struct clksel_rate div_1_0_rates[];

arch/arm/mach-omap2/clock34xx.c

@@ -37,7 +37,11 @@
  * from the CM_{I,F}CLKEN bit.  Pass back the correct info via
  * @idlest_reg and @idlest_bit.  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void omap3430es2_clk_ssi_find_idlest(struct clk_hw_omap *clk,
+#else
 static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
+#endif
 					    void __iomem **idlest_reg,
 					    u8 *idlest_bit,
 					    u8 *idlest_val)
@@ -49,7 +53,19 @@ static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
 	*idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
 	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait = {
+	.find_idlest	= omap3430es2_clk_ssi_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
 
+const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait = {
+	.allow_idle	= omap2_clkt_iclk_allow_idle,
+	.deny_idle	= omap2_clkt_iclk_deny_idle,
+	.find_idlest	= omap3430es2_clk_ssi_find_idlest,
+	.find_companion = omap2_clk_dflt_find_companion,
+};
+#else
 const struct clkops clkops_omap3430es2_ssi_wait = {
 	.enable		= omap2_dflt_clk_enable,
 	.disable	= omap2_dflt_clk_disable,
@@ -65,6 +81,7 @@ const struct clkops clkops_omap3430es2_iclk_ssi_wait = {
 	.allow_idle	= omap2_clkt_iclk_allow_idle,
 	.deny_idle	= omap2_clkt_iclk_deny_idle,
 };
+#endif
 
 /**
  * omap3430es2_clk_dss_usbhost_find_idlest - CM_IDLEST info for DSS, USBHOST
@@ -80,7 +97,11 @@ const struct clkops clkops_omap3430es2_iclk_ssi_wait = {
  * default find_idlest code assumes that they are at the same
  * position.)  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk_hw_omap *clk,
+#else
 static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
+#endif
 						    void __iomem **idlest_reg,
 						    u8 *idlest_bit,
 						    u8 *idlest_val)
@@ -93,7 +114,19 @@ static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
 	*idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
 	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait = {
+	.find_idlest	= omap3430es2_clk_dss_usbhost_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
 
+const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait = {
+	.allow_idle	= omap2_clkt_iclk_allow_idle,
+	.deny_idle	= omap2_clkt_iclk_deny_idle,
+	.find_idlest	= omap3430es2_clk_dss_usbhost_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
+#else
 const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
 	.enable		= omap2_dflt_clk_enable,
 	.disable	= omap2_dflt_clk_disable,
@@ -109,6 +142,7 @@ const struct clkops clkops_omap3430es2_iclk_dss_usbhost_wait = {
 	.allow_idle	= omap2_clkt_iclk_allow_idle,
 	.deny_idle	= omap2_clkt_iclk_deny_idle,
 };
+#endif
 
 /**
  * omap3430es2_clk_hsotgusb_find_idlest - return CM_IDLEST info for HSOTGUSB
@@ -121,7 +155,11 @@ const struct clkops clkops_omap3430es2_iclk_dss_usbhost_wait = {
  * shift from the CM_{I,F}CLKEN bit.  Pass back the correct info via
  * @idlest_reg and @idlest_bit.  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void omap3430es2_clk_hsotgusb_find_idlest(struct clk_hw_omap *clk,
+#else
 static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
+#endif
 						 void __iomem **idlest_reg,
 						 u8 *idlest_bit,
 						 u8 *idlest_val)
@@ -133,7 +171,19 @@ static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
 	*idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
 	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait = {
+	.allow_idle	= omap2_clkt_iclk_allow_idle,
+	.deny_idle	= omap2_clkt_iclk_deny_idle,
+	.find_idlest	= omap3430es2_clk_hsotgusb_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
 
+const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait = {
+	.find_idlest	= omap3430es2_clk_hsotgusb_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
+#else
 const struct clkops clkops_omap3430es2_hsotgusb_wait = {
 	.enable		= omap2_dflt_clk_enable,
 	.disable	= omap2_dflt_clk_disable,
@@ -149,3 +199,4 @@ const struct clkops clkops_omap3430es2_iclk_hsotgusb_wait = {
 	.allow_idle	= omap2_clkt_iclk_allow_idle,
 	.deny_idle	= omap2_clkt_iclk_deny_idle,
 };
+#endif

arch/arm/mach-omap2/clock3517.c

@@ -47,7 +47,11 @@
  * in the enable register itsel at a bit offset of 4 from the enable
  * bit. A value of 1 indicates that clock is enabled.
  */
+#ifdef CONFIG_COMMON_CLK
+static void am35xx_clk_find_idlest(struct clk_hw_omap *clk,
+#else
 static void am35xx_clk_find_idlest(struct clk *clk,
+#endif
 					    void __iomem **idlest_reg,
 					    u8 *idlest_bit,
 					    u8 *idlest_val)
@@ -71,8 +75,14 @@ static void am35xx_clk_find_idlest(struct clk *clk,
  * associate this type of code with per-module data structures to
  * avoid this issue, and remove the casts.  No return value.
  */
-static void am35xx_clk_find_companion(struct clk *clk, void __iomem **other_reg,
-					    u8 *other_bit)
+#ifdef CONFIG_COMMON_CLK
+static void am35xx_clk_find_companion(struct clk_hw_omap *clk,
+				      void __iomem **other_reg,
+#else
+static void am35xx_clk_find_companion(struct clk *clk,
+				      void __iomem **other_reg,
+#endif
+				      u8 *other_bit)
 {
 	*other_reg = (__force void __iomem *)(clk->enable_reg);
 	if (clk->enable_bit & AM35XX_IPSS_ICK_MASK)
@@ -80,13 +90,19 @@ static void am35xx_clk_find_companion(struct clk *clk, void __iomem **other_reg,
 	else
 		*other_bit = clk->enable_bit - AM35XX_IPSS_ICK_FCK_OFFSET;
 }
-
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait = {
+	.find_idlest	= am35xx_clk_find_idlest,
+	.find_companion	= am35xx_clk_find_companion,
+};
+#else
 const struct clkops clkops_am35xx_ipss_module_wait = {
 	.enable		= omap2_dflt_clk_enable,
 	.disable	= omap2_dflt_clk_disable,
 	.find_idlest	= am35xx_clk_find_idlest,
 	.find_companion	= am35xx_clk_find_companion,
 };
+#endif
 
 /**
  * am35xx_clk_ipss_find_idlest - return CM_IDLEST info for IPSS
@@ -99,7 +115,11 @@ const struct clkops clkops_am35xx_ipss_module_wait = {
  * CM_{I,F}CLKEN bit.  Pass back the correct info via @idlest_reg
  * and @idlest_bit.  No return value.
  */
+#ifdef CONFIG_COMMON_CLK
+static void am35xx_clk_ipss_find_idlest(struct clk_hw_omap *clk,
+#else
 static void am35xx_clk_ipss_find_idlest(struct clk *clk,
+#endif
 					    void __iomem **idlest_reg,
 					    u8 *idlest_bit,
 					    u8 *idlest_val)
@@ -111,7 +131,14 @@ static void am35xx_clk_ipss_find_idlest(struct clk *clk,
 	*idlest_bit = AM35XX_ST_IPSS_SHIFT;
 	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
-
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait = {
+	.allow_idle	= omap2_clkt_iclk_allow_idle,
+	.deny_idle	= omap2_clkt_iclk_deny_idle,
+	.find_idlest	= am35xx_clk_ipss_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
+#else
 const struct clkops clkops_am35xx_ipss_wait = {
 	.enable		= omap2_dflt_clk_enable,
 	.disable	= omap2_dflt_clk_disable,
@@ -120,5 +147,5 @@ const struct clkops clkops_am35xx_ipss_wait = {
 	.allow_idle	= omap2_clkt_iclk_allow_idle,
 	.deny_idle	= omap2_clkt_iclk_deny_idle,
 };
-
+#endif
 

arch/arm/mach-omap2/clock36xx.c

@@ -37,34 +37,51 @@
  * (Any other value different from the Read value) to the
  * corresponding CM_CLKSEL register will refresh the dividers.
  */
+#ifdef CONFIG_COMMON_CLK
+int omap36xx_pwrdn_clk_enable_with_hsdiv_restore(struct clk_hw *clk)
+{
+	struct clk_hw_omap *parent;
+	struct clk_hw *parent_hw;
+#else
 static int omap36xx_pwrdn_clk_enable_with_hsdiv_restore(struct clk *clk)
 {
+	struct clk *parent;
+#endif
 	u32 dummy_v, orig_v, clksel_shift;
 	int ret;
 
 	/* Clear PWRDN bit of HSDIVIDER */
 	ret = omap2_dflt_clk_enable(clk);
 
+#ifdef CONFIG_COMMON_CLK
+	parent_hw = __clk_get_hw(__clk_get_parent(clk->clk));
+	parent = to_clk_hw_omap(parent_hw);
+#else
+	parent = clk->parent;
+#endif
+
 	/* Restore the dividers */
 	if (!ret) {
-		clksel_shift = __ffs(clk->parent->clksel_mask);
-		orig_v = __raw_readl(clk->parent->clksel_reg);
+		clksel_shift = __ffs(parent->clksel_mask);
+		orig_v = __raw_readl(parent->clksel_reg);
 		dummy_v = orig_v;
 
 		/* Write any other value different from the Read value */
 		dummy_v ^= (1 << clksel_shift);
-		__raw_writel(dummy_v, clk->parent->clksel_reg);
+		__raw_writel(dummy_v, parent->clksel_reg);
 
 		/* Write the original divider */
-		__raw_writel(orig_v, clk->parent->clksel_reg);
+		__raw_writel(orig_v, parent->clksel_reg);
 	}
 
 	return ret;
 }
 
+#ifndef CONFIG_COMMON_CLK
 const struct clkops clkops_omap36xx_pwrdn_with_hsdiv_wait_restore = {
 	.enable		= omap36xx_pwrdn_clk_enable_with_hsdiv_restore,
 	.disable	= omap2_dflt_clk_disable,
 	.find_companion	= omap2_clk_dflt_find_companion,
 	.find_idlest	= omap2_clk_dflt_find_idlest,
 };
+#endif

arch/arm/mach-omap2/clock36xx.h

@@ -8,6 +8,10 @@
 #ifndef __ARCH_ARM_MACH_OMAP2_CLOCK36XX_H
 #define __ARCH_ARM_MACH_OMAP2_CLOCK36XX_H
 
+#ifdef CONFIG_COMMON_CLK
+extern int omap36xx_pwrdn_clk_enable_with_hsdiv_restore(struct clk_hw *hw);
+#else
 extern const struct clkops clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+#endif
 
 #endif

arch/arm/mach-omap2/clock3xxx.c

@@ -38,8 +38,12 @@
 
 /* needed by omap3_core_dpll_m2_set_rate() */
 struct clk *sdrc_ick_p, *arm_fck_p;
-
+#ifdef CONFIG_COMMON_CLK
+int omap3_dpll4_set_rate(struct clk_hw *hw, unsigned long rate,
+				unsigned long parent_rate)
+#else
 int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate)
+#endif
 {
 	/*
 	 * According to the 12-5 CDP code from TI, "Limitation 2.5"
@@ -51,7 +55,11 @@ int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate)
 		return -EINVAL;
 	}
 
+#ifdef CONFIG_COMMON_CLK
+	return omap3_noncore_dpll_set_rate(hw, rate, parent_rate);
+#else
 	return omap3_noncore_dpll_set_rate(clk, rate);
+#endif
 }
 
 void __init omap3_clk_lock_dpll5(void)

arch/arm/mach-omap2/clock3xxx.h

@@ -9,8 +9,15 @@
 #define __ARCH_ARM_MACH_OMAP2_CLOCK3XXX_H
 
 int omap3xxx_clk_init(void);
+#ifdef CONFIG_COMMON_CLK
+int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
+					unsigned long parent_rate);
+int omap3_core_dpll_m2_set_rate(struct clk_hw *clk, unsigned long rate,
+					unsigned long parent_rate);
+#else
 int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate);
 int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate);
+#endif
 void omap3_clk_lock_dpll5(void);
 
 extern struct clk *sdrc_ick_p;