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Diffstat (limited to 'sound/soc/blackfin/bf5xx-ac97.c')
-rw-r--r--sound/soc/blackfin/bf5xx-ac97.c388
1 files changed, 0 insertions, 388 deletions
diff --git a/sound/soc/blackfin/bf5xx-ac97.c b/sound/soc/blackfin/bf5xx-ac97.c
deleted file mode 100644
index a040cfe29fc0..000000000000
--- a/sound/soc/blackfin/bf5xx-ac97.c
+++ /dev/null
@@ -1,388 +0,0 @@
-/*
- * bf5xx-ac97.c -- AC97 support for the ADI blackfin chip.
- *
- * Author: Roy Huang
- * Created: 11th. June 2007
- * Copyright: Analog Device Inc.
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/ac97_codec.h>
-#include <sound/initval.h>
-#include <sound/soc.h>
-
-#include <asm/irq.h>
-#include <asm/portmux.h>
-#include <linux/mutex.h>
-#include <linux/gpio.h>
-
-#include "bf5xx-sport.h"
-#include "bf5xx-ac97.h"
-
-/* Anomaly notes:
- * 05000250 - AD1980 is running in TDM mode and RFS/TFS are generated by SPORT
- * contrtoller. But, RFSDIV and TFSDIV are always set to 16*16-1,
- * while the max AC97 data size is 13*16. The DIV is always larger
- * than data size. AD73311 and ad2602 are not running in TDM mode.
- * AD1836 and AD73322 depend on external RFS/TFS only. So, this
- * anomaly does not affect blackfin sound drivers.
-*/
-
-static struct sport_device *ac97_sport_handle;
-
-void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src,
- size_t count, unsigned int chan_mask)
-{
- while (count--) {
- dst->ac97_tag = TAG_VALID;
- if (chan_mask & SP_FL) {
- dst->ac97_pcm_r = *src++;
- dst->ac97_tag |= TAG_PCM_RIGHT;
- }
- if (chan_mask & SP_FR) {
- dst->ac97_pcm_l = *src++;
- dst->ac97_tag |= TAG_PCM_LEFT;
-
- }
-#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
- if (chan_mask & SP_SR) {
- dst->ac97_sl = *src++;
- dst->ac97_tag |= TAG_PCM_SL;
- }
- if (chan_mask & SP_SL) {
- dst->ac97_sr = *src++;
- dst->ac97_tag |= TAG_PCM_SR;
- }
- if (chan_mask & SP_LFE) {
- dst->ac97_lfe = *src++;
- dst->ac97_tag |= TAG_PCM_LFE;
- }
- if (chan_mask & SP_FC) {
- dst->ac97_center = *src++;
- dst->ac97_tag |= TAG_PCM_CENTER;
- }
-#endif
- dst++;
- }
-}
-EXPORT_SYMBOL(bf5xx_pcm_to_ac97);
-
-void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst,
- size_t count)
-{
- while (count--) {
- *(dst++) = src->ac97_pcm_l;
- *(dst++) = src->ac97_pcm_r;
- src++;
- }
-}
-EXPORT_SYMBOL(bf5xx_ac97_to_pcm);
-
-static unsigned int sport_tx_curr_frag(struct sport_device *sport)
-{
- return sport->tx_curr_frag = sport_curr_offset_tx(sport) /
- sport->tx_fragsize;
-}
-
-static void enqueue_cmd(struct snd_ac97 *ac97, __u16 addr, __u16 data)
-{
- struct sport_device *sport = ac97_sport_handle;
- int *cmd_count = sport->private_data;
- int nextfrag = sport_tx_curr_frag(sport);
- struct ac97_frame *nextwrite;
-
- sport_incfrag(sport, &nextfrag, 1);
-
- nextwrite = (struct ac97_frame *)(sport->tx_buf +
- nextfrag * sport->tx_fragsize);
- pr_debug("sport->tx_buf:%p, nextfrag:0x%x nextwrite:%p, cmd_count:%d\n",
- sport->tx_buf, nextfrag, nextwrite, cmd_count[nextfrag]);
- nextwrite[cmd_count[nextfrag]].ac97_tag |= TAG_CMD;
- nextwrite[cmd_count[nextfrag]].ac97_addr = addr;
- nextwrite[cmd_count[nextfrag]].ac97_data = data;
- ++cmd_count[nextfrag];
- pr_debug("ac97_sport: Inserting %02x/%04x into fragment %d\n",
- addr >> 8, data, nextfrag);
-}
-
-static unsigned short bf5xx_ac97_read(struct snd_ac97 *ac97,
- unsigned short reg)
-{
- struct sport_device *sport_handle = ac97_sport_handle;
- struct ac97_frame out_frame[2], in_frame[2];
-
- pr_debug("%s enter 0x%x\n", __func__, reg);
-
- /* When dma descriptor is enabled, the register should not be read */
- if (sport_handle->tx_run || sport_handle->rx_run) {
- pr_err("Could you send a mail to cliff.cai@analog.com "
- "to report this?\n");
- return -EFAULT;
- }
-
- memset(&out_frame, 0, 2 * sizeof(struct ac97_frame));
- memset(&in_frame, 0, 2 * sizeof(struct ac97_frame));
- out_frame[0].ac97_tag = TAG_VALID | TAG_CMD;
- out_frame[0].ac97_addr = ((reg << 8) | 0x8000);
- sport_send_and_recv(sport_handle, (unsigned char *)&out_frame,
- (unsigned char *)&in_frame,
- 2 * sizeof(struct ac97_frame));
- return in_frame[1].ac97_data;
-}
-
-void bf5xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
- unsigned short val)
-{
- struct sport_device *sport_handle = ac97_sport_handle;
-
- pr_debug("%s enter 0x%x:0x%04x\n", __func__, reg, val);
-
- if (sport_handle->tx_run) {
- enqueue_cmd(ac97, (reg << 8), val); /* write */
- enqueue_cmd(ac97, (reg << 8) | 0x8000, 0); /* read back */
- } else {
- struct ac97_frame frame;
- memset(&frame, 0, sizeof(struct ac97_frame));
- frame.ac97_tag = TAG_VALID | TAG_CMD;
- frame.ac97_addr = (reg << 8);
- frame.ac97_data = val;
- sport_send_and_recv(sport_handle, (unsigned char *)&frame, \
- NULL, sizeof(struct ac97_frame));
- }
-}
-
-static void bf5xx_ac97_warm_reset(struct snd_ac97 *ac97)
-{
- struct sport_device *sport_handle = ac97_sport_handle;
- u16 gpio = P_IDENT(sport_handle->pin_req[3]);
-
- pr_debug("%s enter\n", __func__);
-
- peripheral_free_list(sport_handle->pin_req);
- gpio_request(gpio, "bf5xx-ac97");
- gpio_direction_output(gpio, 1);
- udelay(2);
- gpio_set_value(gpio, 0);
- udelay(1);
- gpio_free(gpio);
- peripheral_request_list(sport_handle->pin_req, "soc-audio");
-}
-
-static void bf5xx_ac97_cold_reset(struct snd_ac97 *ac97)
-{
-#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
- pr_debug("%s enter\n", __func__);
-
- /* It is specified for bf548-ezkit */
- gpio_set_value(CONFIG_SND_BF5XX_RESET_GPIO_NUM, 0);
- /* Keep reset pin low for 1 ms */
- mdelay(1);
- gpio_set_value(CONFIG_SND_BF5XX_RESET_GPIO_NUM, 1);
- /* Wait for bit clock recover */
- mdelay(1);
-#else
- pr_info("%s: Not implemented\n", __func__);
-#endif
-}
-
-static struct snd_ac97_bus_ops bf5xx_ac97_ops = {
- .read = bf5xx_ac97_read,
- .write = bf5xx_ac97_write,
- .warm_reset = bf5xx_ac97_warm_reset,
- .reset = bf5xx_ac97_cold_reset,
-};
-
-#ifdef CONFIG_PM
-static int bf5xx_ac97_suspend(struct snd_soc_dai *dai)
-{
- struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
-
- pr_debug("%s : sport %d\n", __func__, dai->id);
- if (!dai->active)
- return 0;
- if (dai->capture_active)
- sport_rx_stop(sport);
- if (dai->playback_active)
- sport_tx_stop(sport);
- return 0;
-}
-
-static int bf5xx_ac97_resume(struct snd_soc_dai *dai)
-{
- int ret;
- struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
-
- pr_debug("%s : sport %d\n", __func__, dai->id);
- if (!dai->active)
- return 0;
-
-#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
- ret = sport_set_multichannel(sport, 16, 0x3FF, 0x3FF, 1);
-#else
- ret = sport_set_multichannel(sport, 16, 0x1F, 0x1F, 1);
-#endif
- if (ret) {
- pr_err("SPORT is busy!\n");
- return -EBUSY;
- }
-
- ret = sport_config_rx(sport, IRFS, 0xF, 0, (16*16-1));
- if (ret) {
- pr_err("SPORT is busy!\n");
- return -EBUSY;
- }
-
- ret = sport_config_tx(sport, ITFS, 0xF, 0, (16*16-1));
- if (ret) {
- pr_err("SPORT is busy!\n");
- return -EBUSY;
- }
-
- return 0;
-}
-
-#else
-#define bf5xx_ac97_suspend NULL
-#define bf5xx_ac97_resume NULL
-#endif
-
-static struct snd_soc_dai_driver bfin_ac97_dai = {
- .bus_control = true,
- .suspend = bf5xx_ac97_suspend,
- .resume = bf5xx_ac97_resume,
- .playback = {
- .stream_name = "AC97 Playback",
- .channels_min = 2,
-#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
- .channels_max = 6,
-#else
- .channels_max = 2,
-#endif
- .rates = SNDRV_PCM_RATE_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE, },
- .capture = {
- .stream_name = "AC97 Capture",
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE, },
-};
-
-static const struct snd_soc_component_driver bfin_ac97_component = {
- .name = "bfin-ac97",
-};
-
-static int asoc_bfin_ac97_probe(struct platform_device *pdev)
-{
- struct sport_device *sport_handle;
- int ret;
-
-#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
- /* Request PB3 as reset pin */
- ret = devm_gpio_request_one(&pdev->dev,
- CONFIG_SND_BF5XX_RESET_GPIO_NUM,
- GPIOF_OUT_INIT_HIGH, "SND_AD198x RESET");
- if (ret) {
- dev_err(&pdev->dev,
- "Failed to request GPIO_%d for reset: %d\n",
- CONFIG_SND_BF5XX_RESET_GPIO_NUM, ret);
- return ret;
- }
-#endif
-
- sport_handle = sport_init(pdev, 2, sizeof(struct ac97_frame),
- PAGE_SIZE);
- if (!sport_handle) {
- ret = -ENODEV;
- goto sport_err;
- }
-
- /*SPORT works in TDM mode to simulate AC97 transfers*/
-#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
- ret = sport_set_multichannel(sport_handle, 16, 0x3FF, 0x3FF, 1);
-#else
- ret = sport_set_multichannel(sport_handle, 16, 0x1F, 0x1F, 1);
-#endif
- if (ret) {
- pr_err("SPORT is busy!\n");
- ret = -EBUSY;
- goto sport_config_err;
- }
-
- ret = sport_config_rx(sport_handle, IRFS, 0xF, 0, (16*16-1));
- if (ret) {
- pr_err("SPORT is busy!\n");
- ret = -EBUSY;
- goto sport_config_err;
- }
-
- ret = sport_config_tx(sport_handle, ITFS, 0xF, 0, (16*16-1));
- if (ret) {
- pr_err("SPORT is busy!\n");
- ret = -EBUSY;
- goto sport_config_err;
- }
-
- ret = snd_soc_set_ac97_ops(&bf5xx_ac97_ops);
- if (ret != 0) {
- dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
- goto sport_config_err;
- }
-
- ret = snd_soc_register_component(&pdev->dev, &bfin_ac97_component,
- &bfin_ac97_dai, 1);
- if (ret) {
- pr_err("Failed to register DAI: %d\n", ret);
- goto sport_config_err;
- }
-
- ac97_sport_handle = sport_handle;
-
- return 0;
-
-sport_config_err:
- sport_done(sport_handle);
-sport_err:
- snd_soc_set_ac97_ops(NULL);
-
- return ret;
-}
-
-static int asoc_bfin_ac97_remove(struct platform_device *pdev)
-{
- struct sport_device *sport_handle = platform_get_drvdata(pdev);
-
- snd_soc_unregister_component(&pdev->dev);
- sport_done(sport_handle);
- snd_soc_set_ac97_ops(NULL);
-
- return 0;
-}
-
-static struct platform_driver asoc_bfin_ac97_driver = {
- .driver = {
- .name = "bfin-ac97",
- },
-
- .probe = asoc_bfin_ac97_probe,
- .remove = asoc_bfin_ac97_remove,
-};
-
-module_platform_driver(asoc_bfin_ac97_driver);
-
-MODULE_AUTHOR("Roy Huang");
-MODULE_DESCRIPTION("AC97 driver for ADI Blackfin");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 13:33:31 +0000