i2c: designware: Set IRQF_NO_SUSPEND flag for all BYT and CHT control…

…lers

On some Cherry Trail systems the GPU ACPI fwnode has power-resources which
point to the PMIC, which is connected over a LPSS I2C controller. The GPU
is a PCI device and PCI devices are powered-on at the resume_noirq resume
phase.

Since the GPU power-resources need the I2C controller, recent acpi_lpss.c
changes now also power-up the LPSS I2C controllers on BYT and CHT devices
in the resume_noirq resume phase. But during this phase the IRQ of the
controller is disabled leading to these errors:

 i2c_designware 808622C1:06: controller timed out
 ACPI Error: AE_ERROR, Returned by Handler for [UserDefinedRegion]
 ACPI Error: Method parse/execution failed \_SB.P18W._ON, AE_ERROR
 video LNXVIDEO:00: Failed to change power state to D0

This commit makes the i2c-designware controller set the IRQF_NO_SUSPEND
flag when requesting the interrupt on BYT and CHT devices, so that the IRQ
is left enabled during the noirq phase, fixing this.

Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-designware-core.h

@@ -278,6 +278,7 @@ struct dw_i2c_dev {
 #define ACCESS_SWAP		0x00000001
 #define ACCESS_16BIT		0x00000002
 #define ACCESS_INTR_MASK	0x00000004
+#define ACCESS_NO_IRQ_SUSPEND	0x00000008
 
 #define MODEL_CHERRYTRAIL	0x00000100
 #define MODEL_MSCC_OCELOT	0x00000200

drivers/i2c/busses/i2c-designware-master.c

@@ -707,7 +707,7 @@ int i2c_dw_probe(struct dw_i2c_dev *dev)
 	adap->dev.parent = dev->dev;
 	i2c_set_adapdata(adap, dev);
 
-	if (dev->shared_with_punit) {
+	if (dev->flags & ACCESS_NO_IRQ_SUSPEND) {
 		irq_flags = IRQF_NO_SUSPEND;
 	} else {
 		irq_flags = IRQF_SHARED | IRQF_COND_SUSPEND;

drivers/i2c/busses/i2c-designware-platdrv.c

@@ -123,8 +123,8 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
 	{ "INT33C3", 0 },
 	{ "INT3432", 0 },
 	{ "INT3433", 0 },
-	{ "80860F41", 0 },
-	{ "808622C1", MODEL_CHERRYTRAIL },
+	{ "80860F41", ACCESS_NO_IRQ_SUSPEND },
+	{ "808622C1", ACCESS_NO_IRQ_SUSPEND | MODEL_CHERRYTRAIL },
 	{ "AMD0010", ACCESS_INTR_MASK },
 	{ "AMDI0010", ACCESS_INTR_MASK },
 	{ "AMDI0510", 0 },