linux/arch/arm/mach-pxa/pxa27x.c

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/*
* linux/arch/arm/mach-pxa/pxa27x.c
*
* Author: Nicolas Pitre
* Created: Nov 05, 2002
* Copyright: MontaVista Software Inc.
*
* Code specific to PXA27x aka Bulverde.
*
* 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.
*/
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/platform_device.h>
#include <linux/syscore_ops.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/i2c/pxa-i2c.h>
#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/suspend.h>
#include <mach/irqs.h>
#include <mach/pxa27x.h>
#include <mach/reset.h>
#include <mach/ohci.h>
#include <mach/pm.h>
#include <mach/dma.h>
#include <mach/smemc.h>
#include "generic.h"
#include "devices.h"
#include "clock.h"
void pxa27x_clear_otgph(void)
{
if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH))
PSSR |= PSSR_OTGPH;
}
EXPORT_SYMBOL(pxa27x_clear_otgph);
static unsigned long ac97_reset_config[] = {
GPIO113_GPIO,
GPIO113_AC97_nRESET,
GPIO95_GPIO,
GPIO95_AC97_nRESET,
};
void pxa27x_assert_ac97reset(int reset_gpio, int on)
{
if (reset_gpio == 113)
pxa2xx_mfp_config(on ? &ac97_reset_config[0] :
&ac97_reset_config[1], 1);
if (reset_gpio == 95)
pxa2xx_mfp_config(on ? &ac97_reset_config[2] :
&ac97_reset_config[3], 1);
}
EXPORT_SYMBOL_GPL(pxa27x_assert_ac97reset);
/* Crystal clock: 13MHz */
#define BASE_CLK 13000000
/*
* Get the clock frequency as reflected by CCSR 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 pxa27x_get_clk_frequency_khz(int info)
{
unsigned long ccsr, clkcfg;
unsigned int l, L, m, M, n2, N, S;
int cccr_a, t, ht, b;
ccsr = CCSR;
cccr_a = CCCR & (1 << 25);
/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
t = clkcfg & (1 << 0);
ht = clkcfg & (1 << 2);
b = clkcfg & (1 << 3);
l = ccsr & 0x1f;
n2 = (ccsr>>7) & 0xf;
m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;
L = l * BASE_CLK;
N = (L * n2) / 2;
M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));
S = (b) ? L : (L/2);
if (info) {
printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
L / 1000000, (L % 1000000) / 10000, l );
printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
N / 1000000, (N % 1000000)/10000, n2 / 2, (n2 % 2)*5,
(t) ? "" : "in" );
printk( KERN_INFO "Memory clock: %d.%02dMHz (/%d)\n",
M / 1000000, (M % 1000000) / 10000, m );
printk( KERN_INFO "System bus clock: %d.%02dMHz \n",
S / 1000000, (S % 1000000) / 10000 );
}
return (t) ? (N/1000) : (L/1000);
}
/*
* Return the current mem clock frequency as reflected by CCCR[A], B, and L
*/
static unsigned long clk_pxa27x_mem_getrate(struct clk *clk)
{
unsigned long ccsr, clkcfg;
unsigned int l, L, m, M;
int cccr_a, b;
ccsr = CCSR;
cccr_a = CCCR & (1 << 25);
/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
b = clkcfg & (1 << 3);
l = ccsr & 0x1f;
m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;
L = l * BASE_CLK;
M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));
return M;
}
static const struct clkops clk_pxa27x_mem_ops = {
.enable = clk_dummy_enable,
.disable = clk_dummy_disable,
.getrate = clk_pxa27x_mem_getrate,
};
/*
* Return the current LCD clock frequency in units of 10kHz as
*/
static unsigned int pxa27x_get_lcdclk_frequency_10khz(void)
{
unsigned long ccsr;
unsigned int l, L, k, K;
ccsr = CCSR;
l = ccsr & 0x1f;
k = (l <= 7) ? 1 : (l <= 16) ? 2 : 4;
L = l * BASE_CLK;
K = L / k;
return (K / 10000);
}
static unsigned long clk_pxa27x_lcd_getrate(struct clk *clk)
{
return pxa27x_get_lcdclk_frequency_10khz() * 10000;
}
static const struct clkops clk_pxa27x_lcd_ops = {
.enable = clk_pxa2xx_cken_enable,
.disable = clk_pxa2xx_cken_disable,
.getrate = clk_pxa27x_lcd_getrate,
};
static DEFINE_PXA2_CKEN(pxa27x_ffuart, FFUART, 14857000, 1);
static DEFINE_PXA2_CKEN(pxa27x_btuart, BTUART, 14857000, 1);
static DEFINE_PXA2_CKEN(pxa27x_stuart, STUART, 14857000, 1);
static DEFINE_PXA2_CKEN(pxa27x_i2s, I2S, 14682000, 0);
static DEFINE_PXA2_CKEN(pxa27x_i2c, I2C, 32842000, 0);
static DEFINE_PXA2_CKEN(pxa27x_usb, USB, 48000000, 5);
static DEFINE_PXA2_CKEN(pxa27x_mmc, MMC, 19500000, 0);
static DEFINE_PXA2_CKEN(pxa27x_ficp, FICP, 48000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_usbhost, USBHOST, 48000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_pwri2c, PWRI2C, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_keypad, KEYPAD, 32768, 0);
static DEFINE_PXA2_CKEN(pxa27x_ssp1, SSP1, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_ssp2, SSP2, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_ssp3, SSP3, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_pwm0, PWM0, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_pwm1, PWM1, 13000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_ac97, AC97, 24576000, 0);
static DEFINE_PXA2_CKEN(pxa27x_ac97conf, AC97CONF, 24576000, 0);
static DEFINE_PXA2_CKEN(pxa27x_msl, MSL, 48000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_usim, USIM, 48000000, 0);
static DEFINE_PXA2_CKEN(pxa27x_memstk, MEMSTK, 19500000, 0);
static DEFINE_PXA2_CKEN(pxa27x_im, IM, 0, 0);
static DEFINE_PXA2_CKEN(pxa27x_memc, MEMC, 0, 0);
static DEFINE_CK(pxa27x_lcd, LCD, &clk_pxa27x_lcd_ops);
static DEFINE_CK(pxa27x_camera, CAMERA, &clk_pxa27x_lcd_ops);
static DEFINE_CLK(pxa27x_mem, &clk_pxa27x_mem_ops, 0, 0);
static struct clk_lookup pxa27x_clkregs[] = {
INIT_CLKREG(&clk_pxa27x_lcd, "pxa2xx-fb", NULL),
INIT_CLKREG(&clk_pxa27x_camera, "pxa27x-camera.0", NULL),
INIT_CLKREG(&clk_pxa27x_ffuart, "pxa2xx-uart.0", NULL),
INIT_CLKREG(&clk_pxa27x_btuart, "pxa2xx-uart.1", NULL),
INIT_CLKREG(&clk_pxa27x_stuart, "pxa2xx-uart.2", NULL),
INIT_CLKREG(&clk_pxa27x_i2s, "pxa2xx-i2s", NULL),
INIT_CLKREG(&clk_pxa27x_i2c, "pxa2xx-i2c.0", NULL),
INIT_CLKREG(&clk_pxa27x_usb, "pxa27x-udc", NULL),
INIT_CLKREG(&clk_pxa27x_mmc, "pxa2xx-mci.0", NULL),
INIT_CLKREG(&clk_pxa27x_stuart, "pxa2xx-ir", "UARTCLK"),
INIT_CLKREG(&clk_pxa27x_ficp, "pxa2xx-ir", "FICPCLK"),
INIT_CLKREG(&clk_pxa27x_usbhost, "pxa27x-ohci", NULL),
INIT_CLKREG(&clk_pxa27x_pwri2c, "pxa2xx-i2c.1", NULL),
INIT_CLKREG(&clk_pxa27x_keypad, "pxa27x-keypad", NULL),
INIT_CLKREG(&clk_pxa27x_ssp1, "pxa27x-ssp.0", NULL),
INIT_CLKREG(&clk_pxa27x_ssp2, "pxa27x-ssp.1", NULL),
INIT_CLKREG(&clk_pxa27x_ssp3, "pxa27x-ssp.2", NULL),
INIT_CLKREG(&clk_pxa27x_pwm0, "pxa27x-pwm.0", NULL),
INIT_CLKREG(&clk_pxa27x_pwm1, "pxa27x-pwm.1", NULL),
INIT_CLKREG(&clk_pxa27x_ac97, NULL, "AC97CLK"),
INIT_CLKREG(&clk_pxa27x_ac97conf, NULL, "AC97CONFCLK"),
INIT_CLKREG(&clk_pxa27x_msl, NULL, "MSLCLK"),
INIT_CLKREG(&clk_pxa27x_usim, NULL, "USIMCLK"),
INIT_CLKREG(&clk_pxa27x_memstk, NULL, "MSTKCLK"),
INIT_CLKREG(&clk_pxa27x_im, NULL, "IMCLK"),
INIT_CLKREG(&clk_pxa27x_memc, NULL, "MEMCLK"),
INIT_CLKREG(&clk_pxa27x_mem, "pxa2xx-pcmcia", NULL),
INIT_CLKREG(&clk_dummy, "pxa-gpio", NULL),
};
#ifdef CONFIG_PM
#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
/*
* allow platforms to override default PWRMODE setting used for PM_SUSPEND_MEM
*/
static unsigned int pwrmode = PWRMODE_SLEEP;
int __init pxa27x_set_pwrmode(unsigned int mode)
{
switch (mode) {
case PWRMODE_SLEEP:
case PWRMODE_DEEPSLEEP:
pwrmode = mode;
return 0;
}
return -EINVAL;
}
/*
* 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_MDREFR,
SLEEP_SAVE_PCFR,
SLEEP_SAVE_COUNT
};
void pxa27x_cpu_pm_save(unsigned long *sleep_save)
{
sleep_save[SLEEP_SAVE_MDREFR] = __raw_readl(MDREFR);
SAVE(PCFR);
SAVE(PSTR);
}
void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
{
__raw_writel(sleep_save[SLEEP_SAVE_MDREFR], MDREFR);
RESTORE(PCFR);
PSSR = PSSR_RDH | PSSR_PH;
RESTORE(PSTR);
}
void pxa27x_cpu_pm_enter(suspend_state_t state)
{
extern void pxa_cpu_standby(void);
#ifndef CONFIG_IWMMXT
u64 acc0;
asm volatile("mra %Q0, %R0, acc0" : "=r" (acc0));
#endif
/* ensure voltage-change sequencer not initiated, which hangs */
PCFR &= ~PCFR_FVC;
/* Clear edge-detect status register. */
PEDR = 0xDF12FE1B;
/* Clear reset status */
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
switch (state) {
case PM_SUSPEND_STANDBY:
pxa_cpu_standby();
break;
case PM_SUSPEND_MEM:
cpu_suspend(pwrmode, pxa27x_finish_suspend);
#ifndef CONFIG_IWMMXT
asm volatile("mar acc0, %Q0, %R0" : "=r" (acc0));
#endif
break;
}
}
static int pxa27x_cpu_pm_valid(suspend_state_t state)
{
return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY;
}
static int pxa27x_cpu_pm_prepare(void)
{
/* set resume return address */
PSPR = virt_to_phys(cpu_resume);
return 0;
}
static void pxa27x_cpu_pm_finish(void)
{
/* ensure not to come back here if it wasn't intended */
PSPR = 0;
}
static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = {
.save_count = SLEEP_SAVE_COUNT,
.save = pxa27x_cpu_pm_save,
.restore = pxa27x_cpu_pm_restore,
.valid = pxa27x_cpu_pm_valid,
.enter = pxa27x_cpu_pm_enter,
.prepare = pxa27x_cpu_pm_prepare,
.finish = pxa27x_cpu_pm_finish,
};
static void __init pxa27x_init_pm(void)
{
pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns;
}
#else
static inline void pxa27x_init_pm(void) {}
#endif
/* PXA27x: Various gpios can issue wakeup events. This logic only
* handles the simple cases, not the WEMUX2 and WEMUX3 options
*/
static int pxa27x_set_wake(struct irq_data *d, unsigned int on)
{
int gpio = pxa_irq_to_gpio(d->irq);
uint32_t mask;
if (gpio >= 0 && gpio < 128)
return gpio_set_wake(gpio, on);
if (d->irq == IRQ_KEYPAD)
return keypad_set_wake(on);
switch (d->irq) {
case IRQ_RTCAlrm:
mask = PWER_RTC;
break;
case IRQ_USB:
mask = 1u << 26;
break;
default:
return -EINVAL;
}
if (on)
PWER |= mask;
else
PWER &=~mask;
return 0;
}
void __init pxa27x_init_irq(void)
{
pxa_init_irq(34, pxa27x_set_wake);
}
static struct map_desc pxa27x_io_desc[] __initdata = {
{ /* Mem Ctl */
.virtual = (unsigned long)SMEMC_VIRT,
.pfn = __phys_to_pfn(PXA2XX_SMEMC_BASE),
.length = 0x00200000,
.type = MT_DEVICE
}, { /* IMem ctl */
.virtual = 0xfe000000,
.pfn = __phys_to_pfn(0x58000000),
.length = 0x00100000,
.type = MT_DEVICE
},
};
void __init pxa27x_map_io(void)
{
pxa_map_io();
iotable_init(ARRAY_AND_SIZE(pxa27x_io_desc));
pxa27x_get_clk_frequency_khz(1);
}
/*
* device registration specific to PXA27x.
*/
void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info)
{
local_irq_disable();
PCFR |= PCFR_PI2CEN;
local_irq_enable();
pxa_register_device(&pxa27x_device_i2c_power, info);
}
static struct pxa_gpio_platform_data pxa27x_gpio_info __initdata = {
.gpio_set_wake = gpio_set_wake,
};
static struct platform_device *devices[] __initdata = {
&pxa27x_device_udc,
&pxa_device_pmu,
&pxa_device_i2s,
ASoC: multi-component - ASoC Multi-Component Support This patch extends the ASoC API to allow sound cards to have more than one CODEC and more than one platform DMA controller. This is achieved by dividing some current ASoC structures that contain both driver data and device data into structures that only either contain device data or driver data. i.e. struct snd_soc_codec ---> struct snd_soc_codec (device data) +-> struct snd_soc_codec_driver (driver data) struct snd_soc_platform ---> struct snd_soc_platform (device data) +-> struct snd_soc_platform_driver (driver data) struct snd_soc_dai ---> struct snd_soc_dai (device data) +-> struct snd_soc_dai_driver (driver data) struct snd_soc_device ---> deleted This now allows ASoC to be more tightly aligned with the Linux driver model and also means that every ASoC codec, platform and (platform) DAI is a kernel device. ASoC component private data is now stored as device private data. The ASoC sound card struct snd_soc_card has also been updated to store lists of it's components rather than a pointer to a codec and platform. The PCM runtime struct soc_pcm_runtime now has pointers to all its components. This patch adds DAPM support for ASoC multi-component and removes struct snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec or runtime PCM level basis rather than using snd_soc_socdev. Other notable multi-component changes:- * Stream operations now de-reference less structures. * close_delayed work() now runs on a DAI basis rather than looping all DAIs in a card. * PM suspend()/resume() operations can now handle N CODECs and Platforms per sound card. * Added soc_bind_dai_link() to bind the component devices to the sound card. * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove DAI link components. * sysfs entries can now be registered per component per card. * snd_soc_new_pcms() functionailty rolled into dai_link_probe(). * snd_soc_register_codec() now does all the codec list and mutex init. This patch changes the probe() and remove() of the CODEC drivers as follows:- o Make CODEC driver a platform driver o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core. o Removed all static codec pointers (drivers now support > 1 codec dev) o snd_soc_register_pcms() now done by core. o snd_soc_register_dai() folded into snd_soc_register_codec(). CS4270 portions: Acked-by: Timur Tabi <timur@freescale.com> Some TLV320aic23 and Cirrus platform fixes. Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> TI CODEC and OMAP fixes Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Samsung platform and misc fixes :- Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Jassi Brar <jassi.brar@samsung.com> Signed-off-by: Seungwhan Youn <sw.youn@samsung.com> MPC8610 and PPC fixes. Signed-off-by: Timur Tabi <timur@freescale.com> i.MX fixes and some core fixes. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> J4740 platform fixes:- Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> CC: Tony Lindgren <tony@atomide.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Kevin Hilman <khilman@deeprootsystems.com> CC: Sascha Hauer <s.hauer@pengutronix.de> CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp> CC: Kuninori Morimoto <morimoto.kuninori@renesas.com> CC: Daniel Gloeckner <dg@emlix.com> CC: Manuel Lauss <mano@roarinelk.homelinux.net> CC: Mike Frysinger <vapier.adi@gmail.com> CC: Arnaud Patard <apatard@mandriva.com> CC: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-17 20:15:21 +00:00
&pxa_device_asoc_ssp1,
&pxa_device_asoc_ssp2,
&pxa_device_asoc_ssp3,
&pxa_device_asoc_platform,
&sa1100_device_rtc,
&pxa_device_rtc,
&pxa27x_device_ssp1,
&pxa27x_device_ssp2,
&pxa27x_device_ssp3,
&pxa27x_device_pwm0,
&pxa27x_device_pwm1,
};
static int __init pxa27x_init(void)
{
int ret = 0;
if (cpu_is_pxa27x()) {
reset_status = RCSR;
clkdev_add_table(pxa27x_clkregs, ARRAY_SIZE(pxa27x_clkregs));
if ((ret = pxa_init_dma(IRQ_DMA, 32)))
return ret;
pxa27x_init_pm();
register_syscore_ops(&pxa_irq_syscore_ops);
register_syscore_ops(&pxa2xx_mfp_syscore_ops);
register_syscore_ops(&pxa2xx_clock_syscore_ops);
pxa_register_device(&pxa_device_gpio, &pxa27x_gpio_info);
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
}
return ret;
}
postcore_initcall(pxa27x_init);