ARM: 6679/1: SPEAr: make clk API functions more generic

- Add a dummy clk_set_rate() function.  This is required for compilation
  of a few drivers.
- Make functions in plat-spear/clock.c more generic over all SPEAr
  platforms.
- Add div_factor in struct clk for clks with .recalc = follow_parent
- Change type of register pointers to void __iomem *

Reviewed-by: Stanley Miao <stanley.miao@windriver.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 59 insertions, 8 deletions

diff --git a/arch/arm/mach-spear6xx/clock.c b/arch/arm/mach-spear6xx/clock.c
index 36ff056b7321..ef88922986e0 100644
--- a/arch/arm/mach-spear6xx/clock.c
+++ b/arch/arm/mach-spear6xx/clock.c
@@ -39,10 +39,25 @@ static struct clk rtc_clk = {
 };
 
 /* clock derived from 30 MHz osc clk */
+/* pll masks structure */
+static struct pll_clk_masks pll1_masks = {
+        .mode_mask = PLL_MODE_MASK,
+        .mode_shift = PLL_MODE_SHIFT,
+        .norm_fdbk_m_mask = PLL_NORM_FDBK_M_MASK,
+        .norm_fdbk_m_shift = PLL_NORM_FDBK_M_SHIFT,
+        .dith_fdbk_m_mask = PLL_DITH_FDBK_M_MASK,
+        .dith_fdbk_m_shift = PLL_DITH_FDBK_M_SHIFT,
+        .div_p_mask = PLL_DIV_P_MASK,
+        .div_p_shift = PLL_DIV_P_SHIFT,
+        .div_n_mask = PLL_DIV_N_MASK,
+        .div_n_shift = PLL_DIV_N_SHIFT,
+};
+
 /* pll1 configuration structure */
 static struct pll_clk_config pll1_config = {
         .mode_reg = PLL1_CTR,
         .cfg_reg = PLL1_FRQ,
+        .masks = &pll1_masks,
 };
 
 /* PLL1 clock */
@@ -50,7 +65,7 @@ static struct clk pll1_clk = {
         .pclk = &osc_30m_clk,
         .en_reg = PLL1_CTR,
         .en_reg_bit = PLL_ENABLE,
-        .recalc = &pll1_clk_recalc,
+        .recalc = &pll_clk_recalc,
         .private_data = &pll1_config,
 };
 
@@ -76,11 +91,16 @@ static struct clk cpu_clk = {
         .recalc = &follow_parent,
 };
 
+/* ahb masks structure */
+static struct bus_clk_masks ahb_masks = {
+        .mask = PLL_HCLK_RATIO_MASK,
+        .shift = PLL_HCLK_RATIO_SHIFT,
+};
+
 /* ahb configuration structure */
 static struct bus_clk_config ahb_config = {
         .reg = CORE_CLK_CFG,
-        .mask = PLL_HCLK_RATIO_MASK,
-        .shift = PLL_HCLK_RATIO_SHIFT,
+        .masks = &ahb_masks,
 };
 
 /* ahb clock */
@@ -112,9 +132,22 @@ static struct pclk_sel uart_pclk_sel = {
         .pclk_sel_mask = UART_CLK_MASK,
 };
 
+/* auxiliary synthesizers masks */
+static struct aux_clk_masks aux_masks = {
+        .eq_sel_mask = AUX_EQ_SEL_MASK,
+        .eq_sel_shift = AUX_EQ_SEL_SHIFT,
+        .eq1_mask = AUX_EQ1_SEL,
+        .eq2_mask = AUX_EQ2_SEL,
+        .xscale_sel_mask = AUX_XSCALE_MASK,
+        .xscale_sel_shift = AUX_XSCALE_SHIFT,
+        .yscale_sel_mask = AUX_YSCALE_MASK,
+        .yscale_sel_shift = AUX_YSCALE_SHIFT,
+};
+
 /* uart configurations */
 static struct aux_clk_config uart_config = {
         .synth_reg = UART_CLK_SYNT,
+        .masks = &aux_masks,
 };
 
 /* uart0 clock */
@@ -140,6 +173,7 @@ static struct clk uart1_clk = {
 /* firda configurations */
 static struct aux_clk_config firda_config = {
         .synth_reg = FIRDA_CLK_SYNT,
+        .masks = &aux_masks,
 };
 
 /* firda parents */
@@ -176,6 +210,7 @@ static struct clk firda_clk = {
 /* clcd configurations */
 static struct aux_clk_config clcd_config = {
         .synth_reg = CLCD_CLK_SYNT,
+        .masks = &aux_masks,
 };
 
 /* clcd parents */
@@ -230,9 +265,18 @@ static struct pclk_sel gpt_pclk_sel = {
         .pclk_sel_mask = GPT_CLK_MASK,
 };
 
+/* gpt synthesizer masks */
+static struct gpt_clk_masks gpt_masks = {
+        .mscale_sel_mask = GPT_MSCALE_MASK,
+        .mscale_sel_shift = GPT_MSCALE_SHIFT,
+        .nscale_sel_mask = GPT_NSCALE_MASK,
+        .nscale_sel_shift = GPT_NSCALE_SHIFT,
+};
+
 /* gpt0_1 configurations */
-static struct aux_clk_config gpt0_1_config = {
+static struct gpt_clk_config gpt0_1_config = {
         .synth_reg = PRSC1_CLK_CFG,
+        .masks = &gpt_masks,
 };
 
 /* gpt0 ARM1 subsystem timer clock */
@@ -254,8 +298,9 @@ static struct clk gpt1_clk = {
 };
 
 /* gpt2 configurations */
-static struct aux_clk_config gpt2_config = {
+static struct gpt_clk_config gpt2_config = {
         .synth_reg = PRSC2_CLK_CFG,
+        .masks = &gpt_masks,
 };
 
 /* gpt2 timer clock */
@@ -269,8 +314,9 @@ static struct clk gpt2_clk = {
 };
 
 /* gpt3 configurations */
-static struct aux_clk_config gpt3_config = {
+static struct gpt_clk_config gpt3_config = {
         .synth_reg = PRSC3_CLK_CFG,
+        .masks = &gpt_masks,
 };
 
 /* gpt3 timer clock */
@@ -309,11 +355,16 @@ static struct clk usbd_clk = {
 };
 
 /* clock derived from ahb clk */
+/* apb masks structure */
+static struct bus_clk_masks apb_masks = {
+        .mask = HCLK_PCLK_RATIO_MASK,
+        .shift = HCLK_PCLK_RATIO_SHIFT,
+};
+
 /* apb configuration structure */
 static struct bus_clk_config apb_config = {
         .reg = CORE_CLK_CFG,
-        .mask = HCLK_PCLK_RATIO_MASK,
-        .shift = HCLK_PCLK_RATIO_SHIFT,
+        .masks = &apb_masks,
 };
 
 /* apb clock */