#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
#include <sound/core.h>
-#include <sound/pcm.h>
#include <sound/ac97_codec.h>
-#include <sound/initval.h>
#include <sound/soc.h>
+#include <sound/pxa2xx-lib.h>
-#include <asm/irq.h>
-#include <linux/mutex.h>
-#include <asm/arch/hardware.h>
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-gpio.h>
-#include <asm/arch/audio.h>
+#include <mach/hardware.h>
+#include <mach/pxa-regs.h>
+#include <mach/regs-ac97.h>
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
-static DEFINE_MUTEX(car_mutex);
-static DECLARE_WAIT_QUEUE_HEAD(gsr_wq);
-static volatile long gsr_bits;
-static struct clk *ac97_clk;
-#ifdef CONFIG_PXA27x
-static struct clk *ac97conf_clk;
-#endif
-
-/*
- * Beware PXA27x bugs:
- *
- * o Slot 12 read from modem space will hang controller.
- * o CDONE, SDONE interrupt fails after any slot 12 IO.
- *
- * We therefore have an hybrid approach for waiting on SDONE (interrupt or
- * 1 jiffy timeout if interrupt never comes).
- */
-
-static unsigned short pxa2xx_ac97_read(struct snd_ac97 *ac97,
- unsigned short reg)
-{
- unsigned short val = -1;
- volatile u32 *reg_addr;
-
- mutex_lock(&car_mutex);
-
- /* set up primary or secondary codec/modem space */
-#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
-#else
- if (reg == AC97_GPIO_STATUS)
- reg_addr = ac97->num ? &SMC_REG_BASE : &PMC_REG_BASE;
- else
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
-#endif
- reg_addr += (reg >> 1);
-
-#ifndef CONFIG_PXA27x
- if (reg == AC97_GPIO_STATUS) {
- /* read from controller cache */
- val = *reg_addr;
- goto out;
- }
-#endif
-
- /* start read access across the ac97 link */
- GSR = GSR_CDONE | GSR_SDONE;
- gsr_bits = 0;
- val = *reg_addr;
-
- wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_SDONE, 1);
- if (!((GSR | gsr_bits) & GSR_SDONE)) {
- printk(KERN_ERR "%s: read error (ac97_reg=%x GSR=%#lx)\n",
- __func__, reg, GSR | gsr_bits);
- val = -1;
- goto out;
- }
-
- /* valid data now */
- GSR = GSR_CDONE | GSR_SDONE;
- gsr_bits = 0;
- val = *reg_addr;
- /* but we've just started another cycle... */
- wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_SDONE, 1);
-
-out: mutex_unlock(&car_mutex);
- return val;
-}
-
-static void pxa2xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
- unsigned short val)
-{
- volatile u32 *reg_addr;
-
- mutex_lock(&car_mutex);
-
- /* set up primary or secondary codec/modem space */
-#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
-#else
- if (reg == AC97_GPIO_STATUS)
- reg_addr = ac97->num ? &SMC_REG_BASE : &PMC_REG_BASE;
- else
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
-#endif
- reg_addr += (reg >> 1);
-
- GSR = GSR_CDONE | GSR_SDONE;
- gsr_bits = 0;
- *reg_addr = val;
- wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_CDONE, 1);
- if (!((GSR | gsr_bits) & GSR_CDONE))
- printk(KERN_ERR "%s: write error (ac97_reg=%x GSR=%#lx)\n",
- __func__, reg, GSR | gsr_bits);
-
- mutex_unlock(&car_mutex);
-}
-
static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
{
-#ifdef CONFIG_PXA3xx
- int timeout = 100;
-#endif
- gsr_bits = 0;
-
-#ifdef CONFIG_PXA27x
- /* warm reset broken on Bulverde,
- so manually keep AC97 reset high */
- pxa_gpio_mode(113 | GPIO_OUT | GPIO_DFLT_HIGH);
- udelay(10);
- GCR |= GCR_WARM_RST;
- pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
- udelay(500);
-#elif defined(CONFIG_PXA3xx)
- /* Can't use interrupts */
- GCR |= GCR_WARM_RST;
- while (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)) && timeout--)
- mdelay(1);
-#else
- GCR |= GCR_WARM_RST | GCR_PRIRDY_IEN | GCR_SECRDY_IEN;
- wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
-#endif
-
- if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)))
- printk(KERN_INFO "%s: warm reset timeout (GSR=%#lx)\n",
- __func__, gsr_bits);
+ pxa2xx_ac97_try_warm_reset(ac97);
- GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
- GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
+ pxa2xx_ac97_finish_reset(ac97);
}
static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
{
-#ifdef CONFIG_PXA3xx
- int timeout = 1000;
-
- /* Hold CLKBPB for 100us */
- GCR = 0;
- GCR = GCR_CLKBPB;
- udelay(100);
- GCR = 0;
-#endif
-
- GCR &= GCR_COLD_RST; /* clear everything but nCRST */
- GCR &= ~GCR_COLD_RST; /* then assert nCRST */
-
- gsr_bits = 0;
-#ifdef CONFIG_PXA27x
- /* PXA27x Developers Manual section 13.5.2.2.1 */
- clk_enable(ac97conf_clk);
- udelay(5);
- clk_disable(ac97conf_clk);
- GCR = GCR_COLD_RST;
- udelay(50);
-#elif defined(CONFIG_PXA3xx)
- /* Can't use interrupts on PXA3xx */
- GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
-
- GCR = GCR_WARM_RST | GCR_COLD_RST;
- while (!(GSR & (GSR_PCR | GSR_SCR)) && timeout--)
- mdelay(10);
-#else
- GCR = GCR_COLD_RST;
- GCR |= GCR_CDONE_IE|GCR_SDONE_IE;
- wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
-#endif
-
- if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR)))
- printk(KERN_INFO "%s: cold reset timeout (GSR=%#lx)\n",
- __func__, gsr_bits);
-
- GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
- GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
-}
-
-static irqreturn_t pxa2xx_ac97_irq(int irq, void *dev_id)
-{
- long status;
-
- status = GSR;
- if (status) {
- GSR = status;
- gsr_bits |= status;
- wake_up(&gsr_wq);
-
-#ifdef CONFIG_PXA27x
- /* Although we don't use those we still need to clear them
- since they tend to spuriously trigger when MMC is used
- (hardware bug? go figure)... */
- MISR = MISR_EOC;
- PISR = PISR_EOC;
- MCSR = MCSR_EOC;
-#endif
-
- return IRQ_HANDLED;
- }
+ pxa2xx_ac97_try_cold_reset(ac97);
- return IRQ_NONE;
+ pxa2xx_ac97_finish_reset(ac97);
}
struct snd_ac97_bus_ops soc_ac97_ops = {
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
.name = "AC97 PCM Stereo out",
.dev_addr = __PREG(PCDR),
- .drcmr = &DRCMRTXPCDR,
+ .drcmr = &DRCMR(12),
.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
DCMD_BURST32 | DCMD_WIDTH4,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
.name = "AC97 PCM Stereo in",
.dev_addr = __PREG(PCDR),
- .drcmr = &DRCMRRXPCDR,
+ .drcmr = &DRCMR(11),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST32 | DCMD_WIDTH4,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
.name = "AC97 Aux PCM (Slot 5) Mono out",
.dev_addr = __PREG(MODR),
- .drcmr = &DRCMRTXMODR,
+ .drcmr = &DRCMR(10),
.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
DCMD_BURST16 | DCMD_WIDTH2,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
.name = "AC97 Aux PCM (Slot 5) Mono in",
.dev_addr = __PREG(MODR),
- .drcmr = &DRCMRRXMODR,
+ .drcmr = &DRCMR(9),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST16 | DCMD_WIDTH2,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
.name = "AC97 Mic PCM (Slot 6) Mono in",
.dev_addr = __PREG(MCDR),
- .drcmr = &DRCMRRXMCDR,
+ .drcmr = &DRCMR(8),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST16 | DCMD_WIDTH2,
};
#ifdef CONFIG_PM
-static int pxa2xx_ac97_suspend(struct platform_device *pdev,
- struct snd_soc_dai *dai)
+static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
{
- GCR |= GCR_ACLINK_OFF;
- clk_disable(ac97_clk);
- return 0;
+ return pxa2xx_ac97_hw_suspend();
}
-static int pxa2xx_ac97_resume(struct platform_device *pdev,
- struct snd_soc_dai *dai)
+static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
{
- pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
- pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
- pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
- pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
-#ifdef CONFIG_PXA27x
- /* Use GPIO 113 as AC97 Reset on Bulverde */
- pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
-#endif
- clk_enable(ac97_clk);
- return 0;
+ return pxa2xx_ac97_hw_resume();
}
#else
static int pxa2xx_ac97_probe(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
- int ret;
-
- ret = request_irq(IRQ_AC97, pxa2xx_ac97_irq, IRQF_DISABLED, "AC97", NULL);
- if (ret < 0)
- goto err;
-
- pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
- pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
- pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
- pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
-#ifdef CONFIG_PXA27x
- /* Use GPIO 113 as AC97 Reset on Bulverde */
- pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT);
-
- ac97conf_clk = clk_get(&pdev->dev, "AC97CONFCLK");
- if (IS_ERR(ac97conf_clk)) {
- ret = PTR_ERR(ac97conf_clk);
- ac97conf_clk = NULL;
- goto err_irq;
- }
-#endif
- ac97_clk = clk_get(&pdev->dev, "AC97CLK");
- if (IS_ERR(ac97_clk)) {
- ret = PTR_ERR(ac97_clk);
- ac97_clk = NULL;
- goto err_irq;
- }
- clk_enable(ac97_clk);
- return 0;
-
- err_irq:
- GCR |= GCR_ACLINK_OFF;
-#ifdef CONFIG_PXA27x
- if (ac97conf_clk) {
- clk_put(ac97conf_clk);
- ac97conf_clk = NULL;
- }
-#endif
- free_irq(IRQ_AC97, NULL);
- err:
- return ret;
+ return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
}
static void pxa2xx_ac97_remove(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
- GCR |= GCR_ACLINK_OFF;
- free_irq(IRQ_AC97, NULL);
-#ifdef CONFIG_PXA27x
- clk_put(ac97conf_clk);
- ac97conf_clk = NULL;
-#endif
- clk_disable(ac97_clk);
- clk_put(ac97_clk);
- ac97_clk = NULL;
+ pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
}
static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
}
static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
}
static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000)
+static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
+ .hw_params = pxa2xx_ac97_hw_params,
+};
+
+static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
+ .hw_params = pxa2xx_ac97_hw_aux_params,
+};
+
+static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
+ .hw_params = pxa2xx_ac97_hw_mic_params,
+};
+
/*
* There is only 1 physical AC97 interface for pxa2xx, but it
* has extra fifo's that can be used for aux DACs and ADCs.
{
.name = "pxa2xx-ac97",
.id = 0,
- .type = SND_SOC_DAI_AC97,
+ .ac97_control = 1,
.probe = pxa2xx_ac97_probe,
.remove = pxa2xx_ac97_remove,
.suspend = pxa2xx_ac97_suspend,
.channels_max = 2,
.rates = PXA2XX_AC97_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
- .ops = {
- .hw_params = pxa2xx_ac97_hw_params,},
+ .ops = &pxa_ac97_hifi_dai_ops,
},
{
.name = "pxa2xx-ac97-aux",
.id = 1,
- .type = SND_SOC_DAI_AC97,
+ .ac97_control = 1,
.playback = {
.stream_name = "AC97 Aux Playback",
.channels_min = 1,
.channels_max = 1,
.rates = PXA2XX_AC97_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
- .ops = {
- .hw_params = pxa2xx_ac97_hw_aux_params,},
+ .ops = &pxa_ac97_aux_dai_ops,
},
{
.name = "pxa2xx-ac97-mic",
.id = 2,
- .type = SND_SOC_DAI_AC97,
+ .ac97_control = 1,
.capture = {
.stream_name = "AC97 Mic Capture",
.channels_min = 1,
.channels_max = 1,
.rates = PXA2XX_AC97_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
- .ops = {
- .hw_params = pxa2xx_ac97_hw_mic_params,},
+ .ops = &pxa_ac97_mic_dai_ops,
},
};
EXPORT_SYMBOL_GPL(pxa_ac97_dai);
EXPORT_SYMBOL_GPL(soc_ac97_ops);
+static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++)
+ pxa_ac97_dai[i].dev = &pdev->dev;
+
+ /* Punt most of the init to the SoC probe; we may need the machine
+ * driver to do interesting things with the clocking to get us up
+ * and running.
+ */
+ return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
+}
+
+static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
+
+ return 0;
+}
+
+static struct platform_driver pxa2xx_ac97_driver = {
+ .probe = pxa2xx_ac97_dev_probe,
+ .remove = __devexit_p(pxa2xx_ac97_dev_remove),
+ .driver = {
+ .name = "pxa2xx-ac97",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init pxa_ac97_init(void)
+{
+ return platform_driver_register(&pxa2xx_ac97_driver);
+}
+module_init(pxa_ac97_init);
+
+static void __exit pxa_ac97_exit(void)
+{
+ platform_driver_unregister(&pxa2xx_ac97_driver);
+}
+module_exit(pxa_ac97_exit);
+
MODULE_AUTHOR("Nicolas Pitre");
MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff