Add cs42l43 PC focused SoundWire CODEC

Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:

This patch chain adds support for the Cirrus Logic cs42l43 PC focused
SoundWire CODEC. The chain is currently based of Lee's for-mfd-next
branch.

This series is mostly just a resend keeping pace with the kernel under
it, except for a minor fixup in the ASoC stuff.

Thanks,
Charles

Charles Keepax (4):
  dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding
  mfd: cs42l43: Add support for cs42l43 core driver
  pinctrl: cs42l43: Add support for the cs42l43
  ASoC: cs42l43: Add support for the cs42l43

Lucas Tanure (2):
  soundwire: bus: Allow SoundWire peripherals to register IRQ handlers
  spi: cs42l43: Add SPI controller support

 .../bindings/sound/cirrus,cs42l43.yaml        |  313 +++
 MAINTAINERS                                   |    4 +
 drivers/mfd/Kconfig                           |   23 +
 drivers/mfd/Makefile                          |    3 +
 drivers/mfd/cs42l43-i2c.c                     |   98 +
 drivers/mfd/cs42l43-sdw.c                     |  239 ++
 drivers/mfd/cs42l43.c                         | 1188 +++++++++
 drivers/mfd/cs42l43.h                         |   28 +
 drivers/pinctrl/cirrus/Kconfig                |   11 +
 drivers/pinctrl/cirrus/Makefile               |    2 +
 drivers/pinctrl/cirrus/pinctrl-cs42l43.c      |  609 +++++
 drivers/soundwire/bus.c                       |   32 +
 drivers/soundwire/bus_type.c                  |   12 +
 drivers/spi/Kconfig                           |    7 +
 drivers/spi/Makefile                          |    1 +
 drivers/spi/spi-cs42l43.c                     |  284 ++
 include/linux/mfd/cs42l43-regs.h              | 1184 +++++++++
 include/linux/mfd/cs42l43.h                   |  102 +
 include/linux/soundwire/sdw.h                 |    9 +
 include/sound/cs42l43.h                       |   17 +
 sound/soc/codecs/Kconfig                      |   16 +
 sound/soc/codecs/Makefile                     |    4 +
 sound/soc/codecs/cs42l43-jack.c               |  946 +++++++
 sound/soc/codecs/cs42l43-sdw.c                |   74 +
 sound/soc/codecs/cs42l43.c                    | 2278 +++++++++++++++++
 sound/soc/codecs/cs42l43.h                    |  131 +
 26 files changed, 7615 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml
 create mode 100644 drivers/mfd/cs42l43-i2c.c
 create mode 100644 drivers/mfd/cs42l43-sdw.c
 create mode 100644 drivers/mfd/cs42l43.c
 create mode 100644 drivers/mfd/cs42l43.h
 create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs42l43.c
 create mode 100644 drivers/spi/spi-cs42l43.c
 create mode 100644 include/linux/mfd/cs42l43-regs.h
 create mode 100644 include/linux/mfd/cs42l43.h
 create mode 100644 include/sound/cs42l43.h
 create mode 100644 sound/soc/codecs/cs42l43-jack.c
 create mode 100644 sound/soc/codecs/cs42l43-sdw.c
 create mode 100644 sound/soc/codecs/cs42l43.c
 create mode 100644 sound/soc/codecs/cs42l43.h

--
2.30.2

1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/misc/tps6594-esm.c b/drivers/misc/tps6594-esm.c
index b488f704f104..05e2c151e632 100644
--- a/drivers/misc/tps6594-esm.c
+++ b/drivers/misc/tps6594-esm.c
@@ -13,6 +13,8 @@
 
 #include <linux/mfd/tps6594.h>
 
+#define TPS6594_DEV_REV_1 0x08
+
 static irqreturn_t tps6594_esm_isr(int irq, void *dev_id)
 {
 	struct platform_device *pdev = dev_id;
@@ -32,11 +34,26 @@ static int tps6594_esm_probe(struct platform_device *pdev)
 {
 	struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
 	struct device *dev = &pdev->dev;
+	unsigned int rev;
 	int irq;
 	int ret;
 	int i;
 
-	for (i = 0 ; i < pdev->num_resources ; i++) {
+	/*
+	 * Due to a bug in revision 1 of the PMIC, the GPIO3 used for the
+	 * SoC ESM function is used to power the load switch instead.
+	 * As a consequence, ESM can not be used on those PMIC.
+	 * Check the version and return an error in case of revision 1.
+	 */
+	ret = regmap_read(tps->regmap, TPS6594_REG_DEV_REV, &rev);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to read PMIC revision\n");
+	if (rev == TPS6594_DEV_REV_1)
+		return dev_err_probe(dev, -ENODEV,
+			      "ESM not supported for revision 1 PMIC\n");
+
+	for (i = 0; i < pdev->num_resources; i++) {
 		irq = platform_get_irq_byname(pdev, pdev->resource[i].name);
 		if (irq < 0)
 			return dev_err_probe(dev, irq, "Failed to get %s irq\n",