zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/mach-pxa/pxa25x.c b/ap/os/linux/linux-3.4.x/arch/arm/mach-pxa/pxa25x.c
new file mode 100644
index 0000000..3352b37
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/mach-pxa/pxa25x.c
@@ -0,0 +1,386 @@
+/*
+ * linux/arch/arm/mach-pxa/pxa25x.c
+ *
+ * Author: Nicolas Pitre
+ * Created: Jun 15, 2001
+ * Copyright: MontaVista Software Inc.
+ *
+ * Code specific to PXA21x/25x/26x variants.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Since this file should be linked before any other machine specific file,
+ * the __initcall() here will be executed first. This serves as default
+ * initialization stuff for PXA machines which can be overridden later if
+ * need be.
+ */
+#include <linux/gpio.h>
+#include <linux/gpio-pxa.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/suspend.h>
+#include <linux/syscore_ops.h>
+#include <linux/irq.h>
+
+#include <asm/mach/map.h>
+#include <asm/suspend.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/pxa25x.h>
+#include <mach/reset.h>
+#include <mach/pm.h>
+#include <mach/dma.h>
+#include <mach/smemc.h>
+
+#include "generic.h"
+#include "devices.h"
+#include "clock.h"
+
+/*
+ * Various clock factors driven by the CCCR register.
+ */
+
+/* Crystal Frequency to Memory Frequency Multiplier (L) */
+static unsigned char L_clk_mult[32] = { 0, 27, 32, 36, 40, 45, 0, };
+
+/* Memory Frequency to Run Mode Frequency Multiplier (M) */
+static unsigned char M_clk_mult[4] = { 0, 1, 2, 4 };
+
+/* Run Mode Frequency to Turbo Mode Frequency Multiplier (N) */
+/* Note: we store the value N * 2 here. */
+static unsigned char N2_clk_mult[8] = { 0, 0, 2, 3, 4, 0, 6, 0 };
+
+/* Crystal clock */
+#define BASE_CLK 3686400
+
+/*
+ * Get the clock frequency as reflected by CCCR and the turbo flag.
+ * We assume these values have been applied via a fcs.
+ * If info is not 0 we also display the current settings.
+ */
+unsigned int pxa25x_get_clk_frequency_khz(int info)
+{
+ unsigned long cccr, turbo;
+ unsigned int l, L, m, M, n2, N;
+
+ cccr = CCCR;
+ asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (turbo) );
+
+ l = L_clk_mult[(cccr >> 0) & 0x1f];
+ m = M_clk_mult[(cccr >> 5) & 0x03];
+ n2 = N2_clk_mult[(cccr >> 7) & 0x07];
+
+ L = l * BASE_CLK;
+ M = m * L;
+ N = n2 * M / 2;
+
+ if(info)
+ {
+ L += 5000;
+ printk( KERN_INFO "Memory clock: %d.%02dMHz (*%d)\n",
+ L / 1000000, (L % 1000000) / 10000, l );
+ M += 5000;
+ printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
+ M / 1000000, (M % 1000000) / 10000, m );
+ N += 5000;
+ printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
+ N / 1000000, (N % 1000000) / 10000, n2 / 2, (n2 % 2) * 5,
+ (turbo & 1) ? "" : "in" );
+ }
+
+ return (turbo & 1) ? (N/1000) : (M/1000);
+}
+
+static unsigned long clk_pxa25x_mem_getrate(struct clk *clk)
+{
+ return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK;
+}
+
+static const struct clkops clk_pxa25x_mem_ops = {
+ .enable = clk_dummy_enable,
+ .disable = clk_dummy_disable,
+ .getrate = clk_pxa25x_mem_getrate,
+};
+
+static const struct clkops clk_pxa25x_lcd_ops = {
+ .enable = clk_pxa2xx_cken_enable,
+ .disable = clk_pxa2xx_cken_disable,
+ .getrate = clk_pxa25x_mem_getrate,
+};
+
+static unsigned long gpio12_config_32k[] = {
+ GPIO12_32KHz,
+};
+
+static unsigned long gpio12_config_gpio[] = {
+ GPIO12_GPIO,
+};
+
+static void clk_gpio12_enable(struct clk *clk)
+{
+ pxa2xx_mfp_config(gpio12_config_32k, 1);
+}
+
+static void clk_gpio12_disable(struct clk *clk)
+{
+ pxa2xx_mfp_config(gpio12_config_gpio, 1);
+}
+
+static const struct clkops clk_pxa25x_gpio12_ops = {
+ .enable = clk_gpio12_enable,
+ .disable = clk_gpio12_disable,
+};
+
+static unsigned long gpio11_config_3m6[] = {
+ GPIO11_3_6MHz,
+};
+
+static unsigned long gpio11_config_gpio[] = {
+ GPIO11_GPIO,
+};
+
+static void clk_gpio11_enable(struct clk *clk)
+{
+ pxa2xx_mfp_config(gpio11_config_3m6, 1);
+}
+
+static void clk_gpio11_disable(struct clk *clk)
+{
+ pxa2xx_mfp_config(gpio11_config_gpio, 1);
+}
+
+static const struct clkops clk_pxa25x_gpio11_ops = {
+ .enable = clk_gpio11_enable,
+ .disable = clk_gpio11_disable,
+};
+
+/*
+ * 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz)
+ * 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz
+ * 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly)
+ */
+
+/*
+ * PXA 2xx clock declarations.
+ */
+static DEFINE_PXA2_CKEN(pxa25x_hwuart, HWUART, 14745600, 1);
+static DEFINE_PXA2_CKEN(pxa25x_ffuart, FFUART, 14745600, 1);
+static DEFINE_PXA2_CKEN(pxa25x_btuart, BTUART, 14745600, 1);
+static DEFINE_PXA2_CKEN(pxa25x_stuart, STUART, 14745600, 1);
+static DEFINE_PXA2_CKEN(pxa25x_usb, USB, 47923000, 5);
+static DEFINE_PXA2_CKEN(pxa25x_mmc, MMC, 19169000, 0);
+static DEFINE_PXA2_CKEN(pxa25x_i2c, I2C, 31949000, 0);
+static DEFINE_PXA2_CKEN(pxa25x_ssp, SSP, 3686400, 0);
+static DEFINE_PXA2_CKEN(pxa25x_nssp, NSSP, 3686400, 0);
+static DEFINE_PXA2_CKEN(pxa25x_assp, ASSP, 3686400, 0);
+static DEFINE_PXA2_CKEN(pxa25x_pwm0, PWM0, 3686400, 0);
+static DEFINE_PXA2_CKEN(pxa25x_pwm1, PWM1, 3686400, 0);
+static DEFINE_PXA2_CKEN(pxa25x_ac97, AC97, 24576000, 0);
+static DEFINE_PXA2_CKEN(pxa25x_i2s, I2S, 14745600, 0);
+static DEFINE_PXA2_CKEN(pxa25x_ficp, FICP, 47923000, 0);
+
+static DEFINE_CK(pxa25x_lcd, LCD, &clk_pxa25x_lcd_ops);
+static DEFINE_CLK(pxa25x_gpio11, &clk_pxa25x_gpio11_ops, 3686400, 0);
+static DEFINE_CLK(pxa25x_gpio12, &clk_pxa25x_gpio12_ops, 32768, 0);
+static DEFINE_CLK(pxa25x_mem, &clk_pxa25x_mem_ops, 0, 0);
+
+static struct clk_lookup pxa25x_clkregs[] = {
+ INIT_CLKREG(&clk_pxa25x_lcd, "pxa2xx-fb", NULL),
+ INIT_CLKREG(&clk_pxa25x_ffuart, "pxa2xx-uart.0", NULL),
+ INIT_CLKREG(&clk_pxa25x_btuart, "pxa2xx-uart.1", NULL),
+ INIT_CLKREG(&clk_pxa25x_stuart, "pxa2xx-uart.2", NULL),
+ INIT_CLKREG(&clk_pxa25x_usb, "pxa25x-udc", NULL),
+ INIT_CLKREG(&clk_pxa25x_mmc, "pxa2xx-mci.0", NULL),
+ INIT_CLKREG(&clk_pxa25x_i2c, "pxa2xx-i2c.0", NULL),
+ INIT_CLKREG(&clk_pxa25x_ssp, "pxa25x-ssp.0", NULL),
+ INIT_CLKREG(&clk_pxa25x_nssp, "pxa25x-nssp.1", NULL),
+ INIT_CLKREG(&clk_pxa25x_assp, "pxa25x-nssp.2", NULL),
+ INIT_CLKREG(&clk_pxa25x_pwm0, "pxa25x-pwm.0", NULL),
+ INIT_CLKREG(&clk_pxa25x_pwm1, "pxa25x-pwm.1", NULL),
+ INIT_CLKREG(&clk_pxa25x_i2s, "pxa2xx-i2s", NULL),
+ INIT_CLKREG(&clk_pxa25x_stuart, "pxa2xx-ir", "UARTCLK"),
+ INIT_CLKREG(&clk_pxa25x_ficp, "pxa2xx-ir", "FICPCLK"),
+ INIT_CLKREG(&clk_pxa25x_ac97, NULL, "AC97CLK"),
+ INIT_CLKREG(&clk_pxa25x_gpio11, NULL, "GPIO11_CLK"),
+ INIT_CLKREG(&clk_pxa25x_gpio12, NULL, "GPIO12_CLK"),
+ INIT_CLKREG(&clk_pxa25x_mem, "pxa2xx-pcmcia", NULL),
+ INIT_CLKREG(&clk_dummy, "pxa-gpio", NULL),
+};
+
+static struct clk_lookup pxa25x_hwuart_clkreg =
+ INIT_CLKREG(&clk_pxa25x_hwuart, "pxa2xx-uart.3", NULL);
+
+#ifdef CONFIG_PM
+
+#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
+#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
+
+/*
+ * List of global PXA peripheral registers to preserve.
+ * More ones like CP and general purpose register values are preserved
+ * with the stack pointer in sleep.S.
+ */
+enum {
+ SLEEP_SAVE_PSTR,
+ SLEEP_SAVE_COUNT
+};
+
+
+static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
+{
+ SAVE(PSTR);
+}
+
+static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
+{
+ RESTORE(PSTR);
+}
+
+static void pxa25x_cpu_pm_enter(suspend_state_t state)
+{
+ /* Clear reset status */
+ RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+ switch (state) {
+ case PM_SUSPEND_MEM:
+ cpu_suspend(PWRMODE_SLEEP, pxa25x_finish_suspend);
+ break;
+ }
+}
+
+static int pxa25x_cpu_pm_prepare(void)
+{
+ /* set resume return address */
+ PSPR = virt_to_phys(cpu_resume);
+ return 0;
+}
+
+static void pxa25x_cpu_pm_finish(void)
+{
+ /* ensure not to come back here if it wasn't intended */
+ PSPR = 0;
+}
+
+static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
+ .save_count = SLEEP_SAVE_COUNT,
+ .valid = suspend_valid_only_mem,
+ .save = pxa25x_cpu_pm_save,
+ .restore = pxa25x_cpu_pm_restore,
+ .enter = pxa25x_cpu_pm_enter,
+ .prepare = pxa25x_cpu_pm_prepare,
+ .finish = pxa25x_cpu_pm_finish,
+};
+
+static void __init pxa25x_init_pm(void)
+{
+ pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
+}
+#else
+static inline void pxa25x_init_pm(void) {}
+#endif
+
+/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm
+ */
+
+static int pxa25x_set_wake(struct irq_data *d, unsigned int on)
+{
+ int gpio = pxa_irq_to_gpio(d->irq);
+ uint32_t mask = 0;
+
+ if (gpio >= 0 && gpio < 85)
+ return gpio_set_wake(gpio, on);
+
+ if (d->irq == IRQ_RTCAlrm) {
+ mask = PWER_RTC;
+ goto set_pwer;
+ }
+
+ return -EINVAL;
+
+set_pwer:
+ if (on)
+ PWER |= mask;
+ else
+ PWER &=~mask;
+
+ return 0;
+}
+
+void __init pxa25x_init_irq(void)
+{
+ pxa_init_irq(32, pxa25x_set_wake);
+}
+
+#ifdef CONFIG_CPU_PXA26x
+void __init pxa26x_init_irq(void)
+{
+ pxa_init_irq(32, pxa25x_set_wake);
+}
+#endif
+
+static struct map_desc pxa25x_io_desc[] __initdata = {
+ { /* Mem Ctl */
+ .virtual = (unsigned long)SMEMC_VIRT,
+ .pfn = __phys_to_pfn(PXA2XX_SMEMC_BASE),
+ .length = 0x00200000,
+ .type = MT_DEVICE
+ },
+};
+
+void __init pxa25x_map_io(void)
+{
+ pxa_map_io();
+ iotable_init(ARRAY_AND_SIZE(pxa25x_io_desc));
+ pxa25x_get_clk_frequency_khz(1);
+}
+
+static struct platform_device *pxa25x_devices[] __initdata = {
+ &pxa25x_device_udc,
+ &pxa_device_pmu,
+ &pxa_device_i2s,
+ &sa1100_device_rtc,
+ &pxa25x_device_ssp,
+ &pxa25x_device_nssp,
+ &pxa25x_device_assp,
+ &pxa25x_device_pwm0,
+ &pxa25x_device_pwm1,
+ &pxa_device_asoc_platform,
+};
+
+static int __init pxa25x_init(void)
+{
+ int ret = 0;
+
+ if (cpu_is_pxa25x()) {
+
+ reset_status = RCSR;
+
+ clkdev_add_table(pxa25x_clkregs, ARRAY_SIZE(pxa25x_clkregs));
+
+ if ((ret = pxa_init_dma(IRQ_DMA, 16)))
+ return ret;
+
+ pxa25x_init_pm();
+
+ register_syscore_ops(&pxa_irq_syscore_ops);
+ register_syscore_ops(&pxa2xx_mfp_syscore_ops);
+ register_syscore_ops(&pxa2xx_clock_syscore_ops);
+
+ ret = platform_add_devices(pxa25x_devices,
+ ARRAY_SIZE(pxa25x_devices));
+ if (ret)
+ return ret;
+ }
+
+ /* Only add HWUART for PXA255/26x; PXA210/250 do not have it. */
+ if (cpu_is_pxa255())
+ clkdev_add(&pxa25x_hwuart_clkreg);
+
+ return ret;
+}
+
+postcore_initcall(pxa25x_init);