[PATCH 02/14] mfd: arizona: Add MODULE_SOFTDEP("pre: arizona_ldo1")

From: Hans de Goede <hdegoede@redhat.com>
To: Lee Jones <lee.jones@linaro.org>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Cezary Rojewski <cezary.rojewski@intel.com>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Liam Girdwood <liam.r.girdwood@linux.intel.com>,
	Jie Yang <yang.jie@linux.intel.com>,
	Mark Brown <broonie@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>,
	patches@opensource.cirrus.com, linux-kernel@vger.kernel.org,
	alsa-devel@alsa-project.org
Subject: [PATCH 02/14] mfd: arizona: Add MODULE_SOFTDEP("pre: arizona_ldo1")
Date: Sun, 27 Dec 2020 22:12:20 +0100	[thread overview]
Message-ID: <20201227211232.117801-3-hdegoede@redhat.com> (raw)
In-Reply-To: <20201227211232.117801-1-hdegoede@redhat.com>

The (shared) probing code of the arizona-i2c and arizona-spi modules
takes the following steps during init:

1. Call mfd_add_devices() for a set of early child-devices, this
includes the arizona_ldo1 device which provides one of the
core-regulators.

2. Bulk enable the core-regulators.

3. Read the device id.

4. Call mfd_add_devices() for the other child-devices.

This sequence depends on 1. leading to not only the child-device
being created, but also the driver for the child-device binding
to it and registering its regulator.

This requires the arizona_ldo1 driver to be loaded before the
shared probing code runs. Add a doftdep for this to both modules to
ensure that this requirement is met.

Note this mirrors the existing MODULE_SOFTDEP("pre: wm8994_regulator")
in the wm8994 code, which has a similar init sequence.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/mfd/arizona-i2c.c | 1 +
 drivers/mfd/arizona-spi.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/mfd/arizona-i2c.c b/drivers/mfd/arizona-i2c.c
index 4b58e3ad6eb6..2a4a3a164d0a 100644
--- a/drivers/mfd/arizona-i2c.c
+++ b/drivers/mfd/arizona-i2c.c
@@ -115,6 +115,7 @@ static struct i2c_driver arizona_i2c_driver = {
 
 module_i2c_driver(arizona_i2c_driver);
 
+MODULE_SOFTDEP("pre: arizona_ldo1");
 MODULE_DESCRIPTION("Arizona I2C bus interface");
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/arizona-spi.c b/drivers/mfd/arizona-spi.c
index 2633e147b76c..704f214d2614 100644
--- a/drivers/mfd/arizona-spi.c
+++ b/drivers/mfd/arizona-spi.c
@@ -110,6 +110,7 @@ static struct spi_driver arizona_spi_driver = {
 
 module_spi_driver(arizona_spi_driver);
 
+MODULE_SOFTDEP("pre: arizona_ldo1");
 MODULE_DESCRIPTION("Arizona SPI bus interface");
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 MODULE_LICENSE("GPL");
-- 
2.28.0

