[PATCH v1] mfd: dln2: Allow to be enumerated via ACPI

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On some platforms user may want to enumerate DLN2 device, its children,
to be enumerated via ACPI. In order to achieve this, let's distinguish
children by _ADR value.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/mfd/dln2.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c
index 64196b06bfec..3a729b196b1f 100644
--- a/drivers/mfd/dln2.c
+++ b/drivers/mfd/dln2.c
@@ -640,35 +640,56 @@ static int dln2_start_rx_urbs(struct dln2_dev *dln2, gfp_t gfp)
 	return 0;
 }
 
+enum {
+	DLN2_ACPI_MATCH_GPIO	= 0,
+	DLN2_ACPI_MATCH_I2C	= 1,
+	DLN2_ACPI_MATCH_SPI	= 2,
+};
+
 static struct dln2_platform_data dln2_pdata_gpio = {
 	.handle = DLN2_HANDLE_GPIO,
 };
 
+static struct mfd_cell_acpi_match dln2_acpi_match_gpio = {
+	.adr = DLN2_ACPI_MATCH_GPIO,
+};
+
 /* Only one I2C port seems to be supported on current hardware */
 static struct dln2_platform_data dln2_pdata_i2c = {
 	.handle = DLN2_HANDLE_I2C,
 	.port = 0,
 };
 
+static struct mfd_cell_acpi_match dln2_acpi_match_i2c = {
+	.adr = DLN2_ACPI_MATCH_I2C,
+};
+
 /* Only one SPI port supported */
 static struct dln2_platform_data dln2_pdata_spi = {
 	.handle = DLN2_HANDLE_SPI,
 	.port = 0,
 };
 
+static struct mfd_cell_acpi_match dln2_acpi_match_spi = {
+	.adr = DLN2_ACPI_MATCH_SPI,
+};
+
 static const struct mfd_cell dln2_devs[] = {
 	{
 		.name = "dln2-gpio",
+		.acpi_match = &dln2_acpi_match_gpio,
 		.platform_data = &dln2_pdata_gpio,
 		.pdata_size = sizeof(struct dln2_platform_data),
 	},
 	{
 		.name = "dln2-i2c",
+		.acpi_match = &dln2_acpi_match_i2c,
 		.platform_data = &dln2_pdata_i2c,
 		.pdata_size = sizeof(struct dln2_platform_data),
 	},
 	{
 		.name = "dln2-spi",
+		.acpi_match = &dln2_acpi_match_spi,
 		.platform_data = &dln2_pdata_spi,
 		.pdata_size = sizeof(struct dln2_platform_data),
 	},
-- 
2.25.1