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arm: mmp: move pxa168 clock definition to separated file
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move pxa168 clock definition to another file. Then pxa168 can
choose common clock framework or private clock framework.

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
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Chao Xie authored and Haojian Zhuang committed Sep 8, 2012
1 parent 699c9d3 commit 50d0e24
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Showing 4 changed files with 98 additions and 53 deletions.
1 change: 1 addition & 0 deletions arch/arm/mach-mmp/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ obj-$(CONFIG_CPU_MMP2) += mmp2.o sram.o

ifeq ($(CONFIG_COMMON_CLK), )
obj-y += clock.o
obj-$(CONFIG_CPU_PXA168) += clock-pxa168.o
endif
ifeq ($(CONFIG_PM),y)
obj-$(CONFIG_CPU_PXA910) += pm-pxa910.o
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91 changes: 91 additions & 0 deletions arch/arm/mach-mmp/clock-pxa168.c
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@@ -0,0 +1,91 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>

#include <mach/addr-map.h>

#include "common.h"
#include "clock.h"

/*
* APB clock register offsets for PXA168
*/
#define APBC_UART1 APBC_REG(0x000)
#define APBC_UART2 APBC_REG(0x004)
#define APBC_GPIO APBC_REG(0x008)
#define APBC_PWM1 APBC_REG(0x00c)
#define APBC_PWM2 APBC_REG(0x010)
#define APBC_PWM3 APBC_REG(0x014)
#define APBC_PWM4 APBC_REG(0x018)
#define APBC_RTC APBC_REG(0x028)
#define APBC_TWSI0 APBC_REG(0x02c)
#define APBC_KPC APBC_REG(0x030)
#define APBC_TWSI1 APBC_REG(0x06c)
#define APBC_UART3 APBC_REG(0x070)
#define APBC_SSP1 APBC_REG(0x81c)
#define APBC_SSP2 APBC_REG(0x820)
#define APBC_SSP3 APBC_REG(0x84c)
#define APBC_SSP4 APBC_REG(0x858)
#define APBC_SSP5 APBC_REG(0x85c)

#define APMU_NAND APMU_REG(0x060)
#define APMU_LCD APMU_REG(0x04c)
#define APMU_ETH APMU_REG(0x0fc)
#define APMU_USB APMU_REG(0x05c)

/* APB peripheral clocks */
static APBC_CLK(uart1, UART1, 1, 14745600);
static APBC_CLK(uart2, UART2, 1, 14745600);
static APBC_CLK(uart3, UART3, 1, 14745600);
static APBC_CLK(twsi0, TWSI0, 1, 33000000);
static APBC_CLK(twsi1, TWSI1, 1, 33000000);
static APBC_CLK(pwm1, PWM1, 1, 13000000);
static APBC_CLK(pwm2, PWM2, 1, 13000000);
static APBC_CLK(pwm3, PWM3, 1, 13000000);
static APBC_CLK(pwm4, PWM4, 1, 13000000);
static APBC_CLK(ssp1, SSP1, 4, 0);
static APBC_CLK(ssp2, SSP2, 4, 0);
static APBC_CLK(ssp3, SSP3, 4, 0);
static APBC_CLK(ssp4, SSP4, 4, 0);
static APBC_CLK(ssp5, SSP5, 4, 0);
static APBC_CLK(gpio, GPIO, 0, 13000000);
static APBC_CLK(keypad, KPC, 0, 32000);
static APBC_CLK(rtc, RTC, 8, 32768);

static APMU_CLK(nand, NAND, 0x19b, 156000000);
static APMU_CLK(lcd, LCD, 0x7f, 312000000);
static APMU_CLK(eth, ETH, 0x09, 0);
static APMU_CLK(usb, USB, 0x12, 0);

/* device and clock bindings */
static struct clk_lookup pxa168_clkregs[] = {
INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL),
INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
INIT_CLKREG(&clk_pwm1, "pxa168-pwm.0", NULL),
INIT_CLKREG(&clk_pwm2, "pxa168-pwm.1", NULL),
INIT_CLKREG(&clk_pwm3, "pxa168-pwm.2", NULL),
INIT_CLKREG(&clk_pwm4, "pxa168-pwm.3", NULL),
INIT_CLKREG(&clk_ssp1, "pxa168-ssp.0", NULL),
INIT_CLKREG(&clk_ssp2, "pxa168-ssp.1", NULL),
INIT_CLKREG(&clk_ssp3, "pxa168-ssp.2", NULL),
INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL),
INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL),
INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
INIT_CLKREG(&clk_keypad, "pxa27x-keypad", NULL),
INIT_CLKREG(&clk_eth, "pxa168-eth", "MFUCLK"),
INIT_CLKREG(&clk_usb, NULL, "PXA168-USBCLK"),
INIT_CLKREG(&clk_rtc, "sa1100-rtc", NULL),
};

void __init pxa168_clk_init(void)
{
clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs));
}
1 change: 1 addition & 0 deletions arch/arm/mach-mmp/common.h
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Original file line number Diff line number Diff line change
Expand Up @@ -7,3 +7,4 @@ extern void timer_init(int irq);
extern void __init icu_init_irq(void);
extern void __init mmp_map_io(void);
extern void mmp_restart(char, const char *);
extern void __init pxa168_clk_init(void);
58 changes: 5 additions & 53 deletions arch/arm/mach-mmp/pxa168.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,8 +18,8 @@

#include <asm/mach/time.h>
#include <asm/system_misc.h>
#include <mach/addr-map.h>
#include <mach/cputype.h>
#include <mach/addr-map.h>
#include <mach/regs-apbc.h>
#include <mach/regs-apmu.h>
#include <mach/irqs.h>
Expand Down Expand Up @@ -50,62 +50,13 @@ void __init pxa168_init_irq(void)
icu_init_irq();
}

/* APB peripheral clocks */
static APBC_CLK(uart1, PXA168_UART1, 1, 14745600);
static APBC_CLK(uart2, PXA168_UART2, 1, 14745600);
static APBC_CLK(uart3, PXA168_UART3, 1, 14745600);
static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000);
static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000);
static APBC_CLK(pwm1, PXA168_PWM1, 1, 13000000);
static APBC_CLK(pwm2, PXA168_PWM2, 1, 13000000);
static APBC_CLK(pwm3, PXA168_PWM3, 1, 13000000);
static APBC_CLK(pwm4, PXA168_PWM4, 1, 13000000);
static APBC_CLK(ssp1, PXA168_SSP1, 4, 0);
static APBC_CLK(ssp2, PXA168_SSP2, 4, 0);
static APBC_CLK(ssp3, PXA168_SSP3, 4, 0);
static APBC_CLK(ssp4, PXA168_SSP4, 4, 0);
static APBC_CLK(ssp5, PXA168_SSP5, 4, 0);
static APBC_CLK(gpio, PXA168_GPIO, 0, 13000000);
static APBC_CLK(keypad, PXA168_KPC, 0, 32000);
static APBC_CLK(rtc, PXA168_RTC, 8, 32768);

static APMU_CLK(nand, NAND, 0x19b, 156000000);
static APMU_CLK(lcd, LCD, 0x7f, 312000000);
static APMU_CLK(eth, ETH, 0x09, 0);
static APMU_CLK(usb, USB, 0x12, 0);

/* device and clock bindings */
static struct clk_lookup pxa168_clkregs[] = {
INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL),
INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
INIT_CLKREG(&clk_pwm1, "pxa168-pwm.0", NULL),
INIT_CLKREG(&clk_pwm2, "pxa168-pwm.1", NULL),
INIT_CLKREG(&clk_pwm3, "pxa168-pwm.2", NULL),
INIT_CLKREG(&clk_pwm4, "pxa168-pwm.3", NULL),
INIT_CLKREG(&clk_ssp1, "pxa168-ssp.0", NULL),
INIT_CLKREG(&clk_ssp2, "pxa168-ssp.1", NULL),
INIT_CLKREG(&clk_ssp3, "pxa168-ssp.2", NULL),
INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL),
INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL),
INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
INIT_CLKREG(&clk_keypad, "pxa27x-keypad", NULL),
INIT_CLKREG(&clk_eth, "pxa168-eth", "MFUCLK"),
INIT_CLKREG(&clk_usb, NULL, "PXA168-USBCLK"),
INIT_CLKREG(&clk_rtc, "sa1100-rtc", NULL),
};

static int __init pxa168_init(void)
{
if (cpu_is_pxa168()) {
mfp_init_base(MFPR_VIRT_BASE);
mfp_init_addr(pxa168_mfp_addr_map);
pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs));
pxa168_clk_init();
}

return 0;
Expand All @@ -114,17 +65,18 @@ postcore_initcall(pxa168_init);

/* system timer - clock enabled, 3.25MHz */
#define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
#define APBC_TIMERS APBC_REG(0x34)

static void __init pxa168_timer_init(void)
{
/* this is early, we have to initialize the CCU registers by
* ourselves instead of using clk_* API. Clock rate is defined
* by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
*/
__raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS);
__raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);

/* 3.25MHz, bus/functional clock enabled, release reset */
__raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS);
__raw_writel(TIMER_CLK_RST, APBC_TIMERS);

timer_init(IRQ_PXA168_TIMER1);
}
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