[linux-yocto] [PATCH 2/2] valleyisland-io: add patch for Valley Island SPI controller support in ACPI mode

[rebecca.swee.fun.chang at intel.com]

From: "Chang, Rebecca Swee Fun" <rebecca.swee.fun.chang at intel.com>

spidev: Enable SPI support in ACPI mode.

Signed-off-by: Chang, Rebecca Swee Fun <rebecca.swee.fun.chang at intel.com>
---
 ...d-support-for-SPI-controller-in-ACPI-mode.patch |   69 ++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 meta/cfg/kernel-cache/features/valleyisland-io/0018-spidev-add-support-for-SPI-controller-in-ACPI-mode.patch

diff --git a/meta/cfg/kernel-cache/features/valleyisland-io/0018-spidev-add-support-for-SPI-controller-in-ACPI-mode.patch b/meta/cfg/kernel-cache/features/valleyisland-io/0018-spidev-add-support-for-SPI-controller-in-ACPI-mode.patch
new file mode 100644
index 0000000..72754f2
--- /dev/null
+++ b/meta/cfg/kernel-cache/features/valleyisland-io/0018-spidev-add-support-for-SPI-controller-in-ACPI-mode.patch
@@ -0,0 +1,69 @@
+spidev: add support for SPI controller in ACPI mode
+
+Code changes are specific to Valley Island platform.
+
+Signed-off-by: Chang, Rebecca Swee Fun <rebecca.swee.fun.chang at intel.com>
+---
+ drivers/spi/spidev.c |   13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
+index 2e0655d..10e7cc4 100644
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
+@@ -33,6 +33,7 @@
+ #include <linux/compat.h>
+ #include <linux/of.h>
+ #include <linux/of_device.h>
++#include <linux/acpi.h>
+ 
+ #include <linux/spi/spi.h>
+ #include <linux/spi/spidev.h>
+@@ -579,6 +580,8 @@ static int spidev_probe(struct spi_device *spi)
+ 	int			status;
+ 	unsigned long		minor;
+
++	printk("%s:enter spidev_probe\n", __func__);
++
+ 	/* Allocate driver data */
+ 	spidev = kzalloc(sizeof(*spidev), GFP_KERNEL);
+ 	if (!spidev)
+@@ -597,6 +600,7 @@ static int spidev_probe(struct spi_device *spi)
+ 	mutex_lock(&device_list_lock);
+ 	minor = find_first_zero_bit(minors, N_SPI_MINORS);
+ 	if (minor < N_SPI_MINORS) {
++		printk("%s:enter 1. bus_num %d, chipselect %d\n", __func__, spi->master->bus_num, spi->chip_select);
+ 		struct device *dev;
+
+ 		spidev->devt = MKDEV(SPIDEV_MAJOR, minor);
+@@ -605,6 +609,7 @@ static int spidev_probe(struct spi_device *spi)
+ 				    spi->master->bus_num, spi->chip_select);
+ 		status = IS_ERR(dev) ? PTR_ERR(dev) : 0;
+ 	} else {
++		printk("%s:no minor num available\n");
+ 		dev_dbg(&spi->dev, "no minor number available!\n");
+ 		status = -ENODEV;
+ 	}
+@@ -651,11 +656,19 @@ static const struct of_device_id spidev_dt_ids[] = {
+
+ MODULE_DEVICE_TABLE(of, spidev_dt_ids);
+
++static struct acpi_device_id spidev_acpi_match[] = {
++	{ "AUTH2750", 0 },
++	{ "SPI1001", 0 },
++	{},
++};
++MODULE_DEVICE_TABLE(acpi, spidev_acpi_match);
++
+ static struct spi_driver spidev_spi_driver = {
+ 	.driver = {
+ 		.name =		"spidev",
+ 		.owner =	THIS_MODULE,
+ 		.of_match_table = of_match_ptr(spidev_dt_ids),
++		.acpi_match_table = ACPI_PTR(spidev_acpi_match),
+ 	},
+ 	.probe =	spidev_probe,
+ 	.remove =	spidev_remove,
+--
+1.7.10.4
+
-- 
1.7.10.4