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Commit 9a37b81c authored by Laxminath Kasam's avatar Laxminath Kasam
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asoc: wcd938x: Fix swr get logical addr fail during SSR 



During SSR, sometimes swr get logical addr fails.
Add sufficient delay after reset and retry logic
for get logical addr.

Change-Id: I2a932e99896e0055f3b35f9b251008612f43b79f
Signed-off-by: default avatarLaxminath Kasam <lkasam@codeaurora.org>
parent 7ae9fa55

asoc/codecs/wcd938x/wcd938x.c

+17 −8
Original line number Diff line number Diff line
@@ -41,6 +41,8 @@ 
#define ADC_MODE_VAL_ULP1     0x09

#define ADC_MODE_VAL_ULP2     0x0B



#define NUM_ATTEMPTS 5



enum {

	CODEC_TX = 0,

	CODEC_RX,
@@ -1842,15 +1844,18 @@ static int wcd938x_get_logical_addr(struct swr_device *swr_dev) 
{

	int ret = 0;

	uint8_t devnum = 0;

	int num_retry = NUM_ATTEMPTS;



	do {

		ret = swr_get_logical_dev_num(swr_dev, swr_dev->addr, &devnum);

		if (ret) {

			dev_err(&swr_dev->dev,

				"%s get devnum %d for dev addr %lx failed\n",

				__func__, devnum, swr_dev->addr);

		swr_remove_device(swr_dev);

		return ret;

			/* retry after 1ms */

			usleep_range(1000, 1010);

		}

	} while (ret && --num_retry);

	swr_dev->dev_num = devnum;

	return 0;

}
@@ -1904,8 +1909,12 @@ static int wcd938x_event_notify(struct notifier_block *block, 
		break;

	case BOLERO_WCD_EVT_SSR_UP:

		wcd938x_reset(wcd938x->dev);

		/* allow reset to take effect */

		usleep_range(10000, 10010);



		wcd938x_get_logical_addr(wcd938x->tx_swr_dev);

		wcd938x_get_logical_addr(wcd938x->rx_swr_dev);



		wcd938x_init_reg(component);

		regcache_mark_dirty(wcd938x->regmap);

		regcache_sync(wcd938x->regmap);