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Subject[PATCH v5 24/44] ARM: da850: add new clock init using common clock framework
Date
This adds the new board-specfic clock init in mach-davinci/da850.c using
the new common clock framework drivers.

The #ifdefs are needed to prevent compile errors until the entire
ARCH_DAVINCI is converted.

Some CFGCHIP* #defines are removed since they are included in the
linux/mfd/da8xx-cfgchip.h header file.

Also clean up the #includes since we are adding some here.

Signed-off-by: David Lechner <david@lechnology.com>
---
arch/arm/mach-davinci/da850.c | 74 +++++++++++++++++++++++++++++++++++--------
1 file changed, 61 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 34117e61..4804096 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -11,39 +11,44 @@
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clk/davinci.h>
#include <linux/clkdev.h>
+#include <linux/cpufreq.h>
#include <linux/gpio.h>
#include <linux/init.h>
-#include <linux/clk.h>
+#include <linux/log2.h>
+#include <linux/mfd/da8xx-cfgchip.h>
+#include <linux/platform_data/gpio-davinci.h>
#include <linux/platform_device.h>
-#include <linux/cpufreq.h>
#include <linux/regulator/consumer.h>
-#include <linux/platform_data/gpio-davinci.h>

#include <asm/mach/map.h>

-#include "psc.h"
-#include <mach/irqs.h>
-#include <mach/cputype.h>
#include <mach/common.h>
-#include <mach/time.h>
-#include <mach/da8xx.h>
#include <mach/cpufreq.h>
+#include <mach/cputype.h>
+#include <mach/da8xx.h>
+#include <mach/irqs.h>
#include <mach/pm.h>
+#include <mach/time.h>

-#include "clock.h"
#include "mux.h"

+#ifndef CONFIG_COMMON_CLK
+#include "clock.h"
+#include "psc.h"
+#endif
+
#define DA850_PLL1_BASE 0x01e1a000
#define DA850_TIMER64P2_BASE 0x01f0c000
#define DA850_TIMER64P3_BASE 0x01f0d000

#define DA850_REF_FREQ 24000000

-#define CFGCHIP3_ASYNC3_CLKSRC BIT(4)
-#define CFGCHIP3_PLL1_MASTER_LOCK BIT(5)
-#define CFGCHIP0_PLL_MASTER_LOCK BIT(4)
-
+#ifndef CONFIG_COMMON_CLK
static int da850_set_armrate(struct clk *clk, unsigned long rate);
static int da850_round_armrate(struct clk *clk, unsigned long rate);
static int da850_set_pll0rate(struct clk *clk, unsigned long armrate);
@@ -583,6 +588,7 @@ static struct clk_lookup da850_clks[] = {
CLK("ecap.2", "fck", &ecap2_clk),
CLK(NULL, NULL, NULL),
};
+#endif

/*
* Device specific mux setup
@@ -1170,6 +1176,7 @@ int da850_register_cpufreq(char *async_clk)
return platform_device_register(&da850_cpufreq_device);
}

+#ifndef CONFIG_COMMON_CLK
static int da850_round_armrate(struct clk *clk, unsigned long rate)
{
int ret = 0, diff;
@@ -1232,12 +1239,14 @@ static int da850_set_pll0rate(struct clk *clk, unsigned long rate)

return 0;
}
+#endif /* CONFIG_COMMON_CLK */
#else
int __init da850_register_cpufreq(char *async_clk)
{
return 0;
}

+#ifndef CONFIG_COMMON_CLK
static int da850_set_armrate(struct clk *clk, unsigned long rate)
{
return -EINVAL;
@@ -1252,6 +1261,7 @@ static int da850_round_armrate(struct clk *clk, unsigned long rate)
{
return clk->rate;
}
+#endif /* CONFIG_COMMON_CLK */
#endif

/* VPIF resource, platform data */
@@ -1395,6 +1405,44 @@ void __init da850_init(void)

void __init da850_init_time(void)
{
+#ifdef CONFIG_COMMON_CLK
+ void __iomem *pll0, *pll1, *psc0, *psc1;
+ struct clk *clk;
+ struct clk_hw *parent;
+
+ pll0 = ioremap(DA8XX_PLL0_BASE, SZ_4K);
+ pll1 = ioremap(DA850_PLL1_BASE, SZ_4K);
+ psc0 = ioremap(DA8XX_PSC0_BASE, SZ_4K);
+ psc1 = ioremap(DA8XX_PSC1_BASE, SZ_4K);
+
+ clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DA850_REF_FREQ);
+ da850_pll_clk_init(pll0, pll1);
+ clk = clk_register_mux(NULL, "async3",
+ (const char * const[]){ "pll0_sysclk2", "pll1_sysclk2" },
+ 2, 0, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG),
+ ilog2(CFGCHIP3_ASYNC3_CLKSRC), 1, 0, NULL);
+ /* pll1_sysclk2 is not affected by CPU scaling, so use it for async3 */
+ parent = clk_hw_get_parent_by_index(__clk_get_hw(clk), 1);
+ if (parent)
+ clk_set_parent(clk, parent->clk);
+ else
+ pr_warn("%s: Failed to find async3 parent clock\n", __func__);
+ da850_psc_clk_init(psc0, psc1);
+ clk = clk_register_fixed_factor(NULL, "i2c0", "pll0_aux_clk", 0, 1, 1);
+ clk_register_clkdev(clk, NULL, "i2c_davinci.1");
+ clk = clk_register_fixed_factor(NULL, "timer0", "pll0_aux_clk", 0, 1, 1);
+ clk_register_clkdev(clk, "timer0", NULL);
+ clk = clk_register_fixed_factor(NULL, "timer1", "pll0_aux_clk", 0, 1, 1);
+ clk_register_clkdev(clk, NULL, "davinci-wdt");
+ clk = clk_register_fixed_factor(NULL, "rmii", "pll0_sysclk7", 0, 1, 1);
+ clk_register_clkdev(clk, "rmii", NULL);
+ clk = clk_register_gate(NULL, "ehrpwm_tbclk", "ehrpwm", 0,
+ DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP1_REG),
+ ilog2(CFGCHIP1_TBCLKSYNC), 0, NULL);
+ clk_register_clkdev(clk, "tbclk", "ehrpwm.0");
+ clk_register_clkdev(clk, "tbclk", "ehrpwm.1");
+#else
davinci_clk_init(da850_clks);
+#endif
davinci_timer_init();
}
--
2.7.4
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