#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
-#include <linux/pm.h>
+#include <linux/suspend.h>
+#include <linux/sysdev.h>
#include <asm/hardware.h>
#include <asm/arch/irqs.h>
#include "generic.h"
#include "devices.h"
+#include "clock.h"
/*
* Various clock factors driven by the CCCR register.
* We assume these values have been applied via a fcs.
* If info is not 0 we also display the current settings.
*/
-unsigned int get_clk_frequency_khz(int info)
+unsigned int pxa25x_get_clk_frequency_khz(int info)
{
unsigned long cccr, turbo;
unsigned int l, L, m, M, n2, N;
return (turbo & 1) ? (N/1000) : (M/1000);
}
-EXPORT_SYMBOL(get_clk_frequency_khz);
-
/*
* Return the current memory clock frequency in units of 10kHz
*/
-unsigned int get_memclk_frequency_10khz(void)
+unsigned int pxa25x_get_memclk_frequency_10khz(void)
{
return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK / 10000;
}
-EXPORT_SYMBOL(get_memclk_frequency_10khz);
-
-/*
- * Return the current LCD clock frequency in units of 10kHz
- */
-unsigned int get_lcdclk_frequency_10khz(void)
+static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk)
{
- return get_memclk_frequency_10khz();
+ return pxa25x_get_memclk_frequency_10khz() * 10000;
}
-EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
+static const struct clkops clk_pxa25x_lcd_ops = {
+ .enable = clk_cken_enable,
+ .disable = clk_cken_disable,
+ .getrate = clk_pxa25x_lcd_getrate,
+};
+
+/*
+ * 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)
+ */
+static struct clk pxa25x_hwuart_clk =
+ INIT_CKEN("UARTCLK", HWUART, 14745600, 1, &pxa_device_hwuart.dev)
+;
+
+static struct clk pxa25x_clks[] = {
+ INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev),
+ INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev),
+ INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
+ INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
+ INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev),
+ INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
+ INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),
+
+ INIT_CKEN("SSPCLK", SSP, 3686400, 0, &pxa25x_device_ssp.dev),
+ INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev),
+ INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev),
+
+ /*
+ INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL),
+ INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL),
+ INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL),
+ */
+ INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL),
+};
#ifdef CONFIG_PM
#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
-#define RESTORE_GPLEVEL(n) do { \
- GPSR##n = sleep_save[SLEEP_SAVE_GPLR##n]; \
- GPCR##n = ~sleep_save[SLEEP_SAVE_GPLR##n]; \
-} while (0)
-
/*
* List of global PXA peripheral registers to preserve.
* More ones like CP and general purpose register values are preserved
*/
enum { SLEEP_SAVE_START = 0,
- SLEEP_SAVE_GPLR0, SLEEP_SAVE_GPLR1, SLEEP_SAVE_GPLR2,
- SLEEP_SAVE_GPDR0, SLEEP_SAVE_GPDR1, SLEEP_SAVE_GPDR2,
- SLEEP_SAVE_GRER0, SLEEP_SAVE_GRER1, SLEEP_SAVE_GRER2,
- SLEEP_SAVE_GFER0, SLEEP_SAVE_GFER1, SLEEP_SAVE_GFER2,
SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2,
SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U,
SLEEP_SAVE_PSTR,
- SLEEP_SAVE_ICMR,
SLEEP_SAVE_CKEN,
SLEEP_SAVE_SIZE
static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
{
- SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2);
- SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2);
- SAVE(GRER0); SAVE(GRER1); SAVE(GRER2);
- SAVE(GFER0); SAVE(GFER1); SAVE(GFER2);
SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2);
SAVE(GAFR0_L); SAVE(GAFR0_U);
SAVE(GAFR1_L); SAVE(GAFR1_U);
SAVE(GAFR2_L); SAVE(GAFR2_U);
- SAVE(ICMR);
SAVE(CKEN);
SAVE(PSTR);
+
+ /* Clear GPIO transition detect bits */
+ GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
}
static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
{
+ /* ensure not to come back here if it wasn't intended */
+ PSPR = 0;
+
/* restore registers */
- RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
- RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
RESTORE(GAFR0_L); RESTORE(GAFR0_U);
RESTORE(GAFR1_L); RESTORE(GAFR1_U);
RESTORE(GAFR2_L); RESTORE(GAFR2_U);
- RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2);
- RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2);
RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
+ PSSR = PSSR_RDH | PSSR_PH;
+
RESTORE(CKEN);
- RESTORE(ICMR);
RESTORE(PSTR);
}
static void pxa25x_cpu_pm_enter(suspend_state_t state)
{
- CKEN = 0;
-
switch (state) {
case PM_SUSPEND_MEM:
/* set resume return address */
static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
.save_size = SLEEP_SAVE_SIZE,
- .valid = pm_valid_only_mem,
+ .valid = suspend_valid_only_mem,
.save = pxa25x_cpu_pm_save,
.restore = pxa25x_cpu_pm_restore,
.enter = pxa25x_cpu_pm_enter,
{
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(unsigned int irq, unsigned int on)
+{
+ int gpio = IRQ_TO_GPIO(irq);
+ uint32_t gpio_bit, mask = 0;
+
+ if (gpio >= 0 && gpio <= 15) {
+ gpio_bit = GPIO_bit(gpio);
+ mask = gpio_bit;
+ if (on) {
+ if (GRER(gpio) | gpio_bit)
+ PRER |= gpio_bit;
+ else
+ PRER &= ~gpio_bit;
+
+ if (GFER(gpio) | gpio_bit)
+ PFER |= gpio_bit;
+ else
+ PFER &= ~gpio_bit;
+ }
+ goto set_pwer;
+ }
+
+ if (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_low();
pxa_init_irq_gpio(85);
+ pxa_init_irq_set_wake(pxa25x_set_wake);
}
static struct platform_device *pxa25x_devices[] __initdata = {
- &pxa_device_mci,
&pxa_device_udc,
- &pxa_device_fb,
&pxa_device_ffuart,
&pxa_device_btuart,
&pxa_device_stuart,
- &pxa_device_i2c,
&pxa_device_i2s,
- &pxa_device_ficp,
&pxa_device_rtc,
+ &pxa25x_device_ssp,
+ &pxa25x_device_nssp,
+ &pxa25x_device_assp,
+};
+
+static struct sys_device pxa25x_sysdev[] = {
+ {
+ .cls = &pxa_irq_sysclass,
+ }, {
+ .cls = &pxa_gpio_sysclass,
+ },
};
static int __init pxa25x_init(void)
{
- int ret = 0;
+ int i, ret = 0;
+
+ /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
+ if (cpu_is_pxa25x())
+ clks_register(&pxa25x_hwuart_clk, 1);
if (cpu_is_pxa21x() || cpu_is_pxa25x()) {
+ clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
+
if ((ret = pxa_init_dma(16)))
return ret;
-#ifdef CONFIG_PM
+
pxa25x_init_pm();
-#endif
+
+ for (i = 0; i < ARRAY_SIZE(pxa25x_sysdev); i++) {
+ ret = sysdev_register(&pxa25x_sysdev[i]);
+ if (ret)
+ pr_err("failed to register sysdev[%d]\n", i);
+ }
+
ret = platform_add_devices(pxa25x_devices,
ARRAY_SIZE(pxa25x_devices));
+ if (ret)
+ return ret;
}
+
/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
if (cpu_is_pxa25x())
ret = platform_device_register(&pxa_device_hwuart);
git.openpandora.org / pandora-kernel.git / blobdiff