From: Richard Fitzgerald <rf@opensource.cirrus.com>
To: <broonie@kernel.org>
Cc: <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
<patches@opensource.cirrus.com>,
Richard Fitzgerald <rf@opensource.cirrus.com>
Subject: [PATCH 06/16] ASoC: cs42l42: Reset GPIO is mandatory
Date: Fri, 15 Oct 2021 14:36:09 +0100 [thread overview]
Message-ID: <20211015133619.4698-7-rf@opensource.cirrus.com> (raw)
In-Reply-To: <20211015133619.4698-1-rf@opensource.cirrus.com>
The hard RESET must be used to correctly power-up the cs42l42, as
described in the datasheet.
The code was getting the GPIO with devm_gpiod_get_optional(). Change
this to devm_gpiod_get().
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
---
sound/soc/codecs/cs42l42.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 0ecf2129ea45..629a0783e693 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -2034,17 +2034,14 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
}
/* Reset the Device */
- cs42l42->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
- "reset", GPIOD_OUT_LOW);
+ cs42l42->reset_gpio = devm_gpiod_get(&i2c_client->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(cs42l42->reset_gpio)) {
ret = PTR_ERR(cs42l42->reset_gpio);
+ dev_err(&i2c_client->dev, "Failed to request reset gpio: %d\n", ret);
goto err_disable;
}
- if (cs42l42->reset_gpio) {
- dev_dbg(&i2c_client->dev, "Found reset GPIO\n");
- gpiod_set_value_cansleep(cs42l42->reset_gpio, 1);
- }
+ gpiod_set_value_cansleep(cs42l42->reset_gpio, 1);
usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);
/* Request IRQ */
--
2.11.0
next prev parent reply other threads:[~2021-10-15 13:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-15 13:36 [PATCH 00/16] ASoC: cs42l42: Collection of bugfixes Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 01/16] ASoC: cs42l42: Don't reconfigure the PLL while it is running Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 02/16] ASoC: cs42l42: Always configure both ASP TX channels Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 03/16] ASoC: cs42l42: Correct some register default values Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 04/16] ASoC: cs42l42: Don't set defaults for volatile registers Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 05/16] ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER Richard Fitzgerald
2021-10-15 13:36 ` Richard Fitzgerald [this message]
2021-10-15 14:30 ` [PATCH 06/16] ASoC: cs42l42: Reset GPIO is mandatory Mark Brown
2021-10-15 13:36 ` [PATCH 07/16] ASoC: cs42l42: Correct power-up sequence to match datasheet Richard Fitzgerald
2021-10-15 15:02 ` Mark Brown
2021-10-15 13:36 ` [PATCH 08/16] ASoC: cs42l42: Reset and power-down on driver remove() Richard Fitzgerald
2021-10-15 15:04 ` Mark Brown
2021-10-15 13:36 ` [PATCH 09/16] ASoC: cs42l42: Prevent NULL pointer deref in interrupt handler Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 10/16] ASoC: cs42l42: Don't claim to support 192k Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 11/16] ASoC: cs42l42: Use PLL for SCLK > 12.288MHz Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 12/16] ASoC: cs42l42: Allow time for HP/ADC to power-up after enable Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 13/16] ASoC: cs42l42: Set correct SRC MCLK Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 14/16] ASoC: cs42l42: Mark OSC_SWITCH_STATUS register volatile Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 15/16] ASoC: cs42l42: Fix WARN in remove() if running without an interrupt Richard Fitzgerald
2021-10-15 13:36 ` [PATCH 16/16] ASoC: cs42l42: Always enable TS_PLUG and TS_UNPLUG interrupts Richard Fitzgerald
2021-10-15 19:42 ` (subset) [PATCH 00/16] ASoC: cs42l42: Collection of bugfixes Mark Brown
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