ARM: spear: make clock driver independent of headers

Device drivers should not access MMIO registers through hardcoded
platform specific address constants. Instead, we can pass the
MMIO token to the spear clock driver in the initialization routine
to contain that knowledge in the platform code itself.

Ideally, the clock driver would use of_iomap() or similar to
get the address, and that can be used later, but for now, this
is the minimal change.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

1 files changed, 35 insertions, 25 deletions

diff --git a/drivers/clk/spear/spear3xx_clock.c b/drivers/clk/spear/spear3xx_clock.c
index 33d3ac588da7..f9ec43fd1320 100644
--- a/drivers/clk/spear/spear3xx_clock.c
+++ b/drivers/clk/spear/spear3xx_clock.c
@@ -15,21 +15,20 @@
 #include <linux/io.h>
 #include <linux/of_platform.h>
 #include <linux/spinlock_types.h>
-#include <mach/misc_regs.h>
 #include "clk.h"
 
 static DEFINE_SPINLOCK(_lock);
 
-#define PLL1_CTR			(MISC_BASE + 0x008)
-#define PLL1_FRQ			(MISC_BASE + 0x00C)
-#define PLL2_CTR			(MISC_BASE + 0x014)
-#define PLL2_FRQ			(MISC_BASE + 0x018)
-#define PLL_CLK_CFG			(MISC_BASE + 0x020)
+#define PLL1_CTR			(misc_base + 0x008)
+#define PLL1_FRQ			(misc_base + 0x00C)
+#define PLL2_CTR			(misc_base + 0x014)
+#define PLL2_FRQ			(misc_base + 0x018)
+#define PLL_CLK_CFG			(misc_base + 0x020)
 	/* PLL_CLK_CFG register masks */
 	#define MCTR_CLK_SHIFT		28
 	#define MCTR_CLK_MASK		3
 
-#define CORE_CLK_CFG			(MISC_BASE + 0x024)
+#define CORE_CLK_CFG			(misc_base + 0x024)
 	/* CORE CLK CFG register masks */
 	#define GEN_SYNTH2_3_CLK_SHIFT	18
 	#define GEN_SYNTH2_3_CLK_MASK	1
@@ -39,7 +38,7 @@ static DEFINE_SPINLOCK(_lock);
 	#define PCLK_RATIO_SHIFT	8
 	#define PCLK_RATIO_MASK		2
 
-#define PERIP_CLK_CFG			(MISC_BASE + 0x028)
+#define PERIP_CLK_CFG			(misc_base + 0x028)
 	/* PERIP_CLK_CFG register masks */
 	#define UART_CLK_SHIFT		4
 	#define UART_CLK_MASK		1
@@ -50,7 +49,7 @@ static DEFINE_SPINLOCK(_lock);
 	#define GPT2_CLK_SHIFT		12
 	#define GPT_CLK_MASK		1
 
-#define PERIP1_CLK_ENB			(MISC_BASE + 0x02C)
+#define PERIP1_CLK_ENB			(misc_base + 0x02C)
 	/* PERIP1_CLK_ENB register masks */
 	#define UART_CLK_ENB		3
 	#define SSP_CLK_ENB		5
@@ -69,7 +68,7 @@ static DEFINE_SPINLOCK(_lock);
 	#define USBH_CLK_ENB		25
 	#define C3_CLK_ENB		31
 
-#define RAS_CLK_ENB			(MISC_BASE + 0x034)
+#define RAS_CLK_ENB			(misc_base + 0x034)
 	#define RAS_AHB_CLK_ENB		0
 	#define RAS_PLL1_CLK_ENB	1
 	#define RAS_APB_CLK_ENB		2
@@ -82,20 +81,20 @@ static DEFINE_SPINLOCK(_lock);
 	#define RAS_SYNT2_CLK_ENB	10
 	#define RAS_SYNT3_CLK_ENB	11
 
-#define PRSC0_CLK_CFG			(MISC_BASE + 0x044)
-#define PRSC1_CLK_CFG			(MISC_BASE + 0x048)
-#define PRSC2_CLK_CFG			(MISC_BASE + 0x04C)
-#define AMEM_CLK_CFG			(MISC_BASE + 0x050)
+#define PRSC0_CLK_CFG			(misc_base + 0x044)
+#define PRSC1_CLK_CFG			(misc_base + 0x048)
+#define PRSC2_CLK_CFG			(misc_base + 0x04C)
+#define AMEM_CLK_CFG			(misc_base + 0x050)
 	#define AMEM_CLK_ENB		0
 
-#define CLCD_CLK_SYNT			(MISC_BASE + 0x05C)
-#define FIRDA_CLK_SYNT			(MISC_BASE + 0x060)
-#define UART_CLK_SYNT			(MISC_BASE + 0x064)
-#define GMAC_CLK_SYNT			(MISC_BASE + 0x068)
-#define GEN0_CLK_SYNT			(MISC_BASE + 0x06C)
-#define GEN1_CLK_SYNT			(MISC_BASE + 0x070)
-#define GEN2_CLK_SYNT			(MISC_BASE + 0x074)
-#define GEN3_CLK_SYNT			(MISC_BASE + 0x078)
+#define CLCD_CLK_SYNT			(misc_base + 0x05C)
+#define FIRDA_CLK_SYNT			(misc_base + 0x060)
+#define UART_CLK_SYNT			(misc_base + 0x064)
+#define GMAC_CLK_SYNT			(misc_base + 0x068)
+#define GEN0_CLK_SYNT			(misc_base + 0x06C)
+#define GEN1_CLK_SYNT			(misc_base + 0x070)
+#define GEN2_CLK_SYNT			(misc_base + 0x074)
+#define GEN3_CLK_SYNT			(misc_base + 0x078)
 
 /* pll rate configuration table, in ascending order of rates */
 static struct pll_rate_tbl pll_rtbl[] = {
@@ -211,6 +210,17 @@ static inline void spear310_clk_init(void) { }
 
 /* array of all spear 320 clock lookups */
 #ifdef CONFIG_MACH_SPEAR320
+
+#define SPEAR320_CONTROL_REG		(soc_config_base + 0x0000)
+#define SPEAR320_EXT_CTRL_REG		(soc_config_base + 0x0018)
+
+	#define SPEAR320_UARTX_PCLK_MASK		0x1
+	#define SPEAR320_UART2_PCLK_SHIFT		8
+	#define SPEAR320_UART3_PCLK_SHIFT		9
+	#define SPEAR320_UART4_PCLK_SHIFT		10
+	#define SPEAR320_UART5_PCLK_SHIFT		11
+	#define SPEAR320_UART6_PCLK_SHIFT		12
+	#define SPEAR320_RS485_PCLK_SHIFT		13
 	#define SMII_PCLK_SHIFT				18
 	#define SMII_PCLK_MASK				2
 	#define SMII_PCLK_VAL_PAD			0x0
@@ -235,7 +245,7 @@ static const char *smii0_parents[] = { "smii_125m_pad", "ras_pll2_clk",
 	"ras_syn0_gclk", };
 static const char *uartx_parents[] = { "ras_syn1_gclk", "ras_apb_clk", };
 
-static void __init spear320_clk_init(void)
+static void __init spear320_clk_init(void __iomem *soc_config_base)
 {
 	struct clk *clk;
 
@@ -362,7 +372,7 @@ static void __init spear320_clk_init(void)
 static inline void spear320_clk_init(void) { }
 #endif
 
-void __init spear3xx_clk_init(void)
+void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_base)
 {
 	struct clk *clk, *clk1;
 
@@ -634,5 +644,5 @@ void __init spear3xx_clk_init(void)
 	else if (of_machine_is_compatible("st,spear310"))
 		spear310_clk_init();
 	else if (of_machine_is_compatible("st,spear320"))
-		spear320_clk_init();
+		spear320_clk_init(soc_config_base);
 }