diff options
| -rwxr-xr-x | drivers/soundwire/soundwire.c | 68 | ||||
| -rw-r--r-- | drivers/soundwire/swr-wcd-ctrl.c | 14 | ||||
| -rwxr-xr-x | include/linux/soundwire/soundwire.h | 6 | ||||
| -rw-r--r-- | sound/soc/codecs/wsa881x.c | 85 |
4 files changed, 66 insertions, 107 deletions
diff --git a/drivers/soundwire/soundwire.c b/drivers/soundwire/soundwire.c index 6691418b516e..3e37ac3bda2d 100755 --- a/drivers/soundwire/soundwire.c +++ b/drivers/soundwire/soundwire.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. +/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -68,6 +68,27 @@ static void swr_dev_release(struct device *dev) } /** + * swr_remove_device - remove a soundwire device + * @swr_dev: soundwire device to remove + * + * Remove a soundwire device. Go through the soundwire + * device list that master has and remove swr_dev from + * it. + */ +void swr_remove_device(struct swr_device *swr_dev) +{ + struct swr_device *swr_dev_loop, *safe; + + list_for_each_entry_safe(swr_dev_loop, safe, + &swr_dev->master->devices, + dev_list) { + if (swr_dev == swr_dev_loop) + list_del(&swr_dev_loop->dev_list); + } +} +EXPORT_SYMBOL(swr_remove_device); + +/** * swr_new_device - instantiate a new soundwire device * @master: Controller to which device is connected * @info: Describes the soundwire device @@ -129,47 +150,6 @@ err_out: EXPORT_SYMBOL(swr_new_device); /** - * swr_startup_devices - perform additional initialization for child devices - * - * @swr_dev: pointer to soundwire slave device - * - * Performs any additional initialization needed for a soundwire slave device. - * This is a optional functionality defined by slave devices. - * Removes the slave node from the list, in case there is any failure. - */ -int swr_startup_devices(struct swr_device *swr_dev) -{ - struct swr_driver *swr_drv; - struct device *dev; - int ret = 0; - - if (!swr_dev) - return -EINVAL; - - dev = &swr_dev->dev; - if (!dev) - return -EINVAL; - - swr_drv = to_swr_driver(dev->driver); - if (!swr_drv) - return -EINVAL; - - if (swr_drv->startup) { - ret = swr_drv->startup(swr_dev); - if (ret) - goto out; - - dev_dbg(&swr_dev->dev, - "%s: startup complete for device %lx\n", - __func__, swr_dev->addr); - } - -out: - return ret; -} -EXPORT_SYMBOL(swr_startup_devices); - -/** * of_register_swr_devices - register child devices on to the soundwire bus * @master: pointer to soundwire master device * @@ -610,7 +590,7 @@ int swr_device_up(struct swr_device *swr_dev) dev = &swr_dev->dev; sdrv = to_swr_driver(dev->driver); if (!sdrv) - return -EINVAL; + return 0; if (sdrv->device_up) return sdrv->device_up(to_swr_device(dev)); @@ -638,7 +618,7 @@ int swr_device_down(struct swr_device *swr_dev) dev = &swr_dev->dev; sdrv = to_swr_driver(dev->driver); if (!sdrv) - return -EINVAL; + return 0; if (sdrv->device_down) return sdrv->device_down(to_swr_device(dev)); diff --git a/drivers/soundwire/swr-wcd-ctrl.c b/drivers/soundwire/swr-wcd-ctrl.c index 14c13db991a1..cdaf009c5b1f 100644 --- a/drivers/soundwire/swr-wcd-ctrl.c +++ b/drivers/soundwire/swr-wcd-ctrl.c @@ -1369,7 +1369,6 @@ static int swrm_probe(struct platform_device *pdev) { struct swr_mstr_ctrl *swrm; struct swr_ctrl_platform_data *pdata; - struct swr_device *swr_dev, *safe; int ret; /* Allocate soundwire master driver structure */ @@ -1470,9 +1469,6 @@ static int swrm_probe(struct platform_device *pdev) goto err_mstr_fail; } - if (pdev->dev.of_node) - of_register_swr_devices(&swrm->master); - /* Add devices registered with board-info as the controller will be up now */ @@ -1489,15 +1485,11 @@ static int swrm_probe(struct platform_device *pdev) } swrm->version = swrm->read(swrm->handle, SWRM_COMP_HW_VERSION); - /* Enumerate slave devices */ - list_for_each_entry_safe(swr_dev, safe, &swrm->master.devices, - dev_list) { - ret = swr_startup_devices(swr_dev); - if (ret) - list_del(&swr_dev->dev_list); - } mutex_unlock(&swrm->mlock); + if (pdev->dev.of_node) + of_register_swr_devices(&swrm->master); + dbgswrm = swrm; debugfs_swrm_dent = debugfs_create_dir(dev_name(&pdev->dev), 0); if (!IS_ERR(debugfs_swrm_dent)) { diff --git a/include/linux/soundwire/soundwire.h b/include/linux/soundwire/soundwire.h index 2083e7b5da25..1287d2b73bf8 100755 --- a/include/linux/soundwire/soundwire.h +++ b/include/linux/soundwire/soundwire.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. +/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -196,7 +196,6 @@ static inline struct swr_device *to_swr_device(struct device *dev) * @shutdown: standard shutdown callback used during power down/halt * @suspend: standard suspend callback used during system suspend * @resume: standard resume callback used during system resume - * @startup: additional init operation for slave devices * @driver: soundwire device drivers should initialize name and * owner field of this structure * @id_table: list of soundwire devices supported by this driver @@ -210,7 +209,6 @@ struct swr_driver { int (*device_up)(struct swr_device *swr); int (*device_down)(struct swr_device *swr); int (*reset_device)(struct swr_device *swr); - int (*startup)(struct swr_device *swr); struct device_driver driver; const struct swr_device_id *id_table; }; @@ -309,4 +307,6 @@ extern int swr_reset_device(struct swr_device *swr_dev); extern int swr_slvdev_datapath_control(struct swr_device *swr_dev, u8 dev_num, bool enable); extern int swr_remove_from_group(struct swr_device *dev, u8 dev_num); + +extern void swr_remove_device(struct swr_device *swr_dev); #endif /* _LINUX_SOUNDWIRE_H */ diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c index eaaca97e2b8e..0af656ce48f0 100644 --- a/sound/soc/codecs/wsa881x.c +++ b/sound/soc/codecs/wsa881x.c @@ -1123,54 +1123,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wsa881x = { .get_regmap = wsa881x_get_regmap, }; -static int wsa881x_swr_startup(struct swr_device *swr_dev) -{ - int ret = 0; - u8 devnum = 0; - struct wsa881x_priv *wsa881x; - - wsa881x = swr_get_dev_data(swr_dev); - if (!wsa881x) { - dev_err(&swr_dev->dev, "%s: wsa881x is NULL\n", __func__); - return -EINVAL; - } - - /* - * Add 5msec delay to provide sufficient time for - * soundwire auto enumeration of slave devices as - * as per HW requirement. - */ - usleep_range(5000, 5010); - ret = swr_get_logical_dev_num(swr_dev, swr_dev->addr, &devnum); - if (ret) { - dev_dbg(&swr_dev->dev, - "%s get devnum %d for dev addr %lx failed\n", - __func__, devnum, swr_dev->addr); - goto err; - } - swr_dev->dev_num = devnum; - - wsa881x->regmap = devm_regmap_init_swr(swr_dev, - &wsa881x_regmap_config); - if (IS_ERR(wsa881x->regmap)) { - ret = PTR_ERR(wsa881x->regmap); - dev_err(&swr_dev->dev, "%s: regmap_init failed %d\n", - __func__, ret); - goto err; - } - - ret = snd_soc_register_codec(&swr_dev->dev, &soc_codec_dev_wsa881x, - NULL, 0); - if (ret) { - dev_err(&swr_dev->dev, "%s: Codec registration failed\n", - __func__); - goto err; - } - -err: - return ret; -} - static int wsa881x_gpio_ctrl(struct wsa881x_priv *wsa881x, bool enable) { int ret = 0; @@ -1232,6 +1184,7 @@ static int wsa881x_swr_probe(struct swr_device *pdev) { int ret = 0; struct wsa881x_priv *wsa881x; + u8 devnum = 0; wsa881x = devm_kzalloc(&pdev->dev, sizeof(struct wsa881x_priv), GFP_KERNEL); @@ -1291,8 +1244,43 @@ static int wsa881x_swr_probe(struct swr_device *pdev) &codec_debug_ops); } } + + /* + * Add 5msec delay to provide sufficient time for + * soundwire auto enumeration of slave devices as + * as per HW requirement. + */ + usleep_range(5000, 5010); + ret = swr_get_logical_dev_num(pdev, pdev->addr, &devnum); + if (ret) { + dev_dbg(&pdev->dev, + "%s get devnum %d for dev addr %lx failed\n", + __func__, devnum, pdev->addr); + goto dev_err; + } + pdev->dev_num = devnum; + + wsa881x->regmap = devm_regmap_init_swr(pdev, + &wsa881x_regmap_config); + if (IS_ERR(wsa881x->regmap)) { + ret = PTR_ERR(wsa881x->regmap); + dev_err(&pdev->dev, "%s: regmap_init failed %d\n", + __func__, ret); + goto dev_err; + } + + ret = snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wsa881x, + NULL, 0); + if (ret) { + dev_err(&pdev->dev, "%s: Codec registration failed\n", + __func__); + goto dev_err; + } + return 0; +dev_err: + swr_remove_device(pdev); err: return ret; } @@ -1425,7 +1413,6 @@ static struct swr_driver wsa881x_codec_driver = { .device_up = wsa881x_swr_up, .device_down = wsa881x_swr_down, .reset_device = wsa881x_swr_reset, - .startup = wsa881x_swr_startup, }; static int __init wsa881x_codec_init(void) |