leds: pca955x: Add an IBM software implementation of the PCA9552 chip

IBM created an implementation of the PCA9552 on a PIC16F
microcontroller. The I2C device addresses are different from the
hardware PCA9552, so add a new compatible string and associated
platform data to be able to probe this device.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 131f8e922adebe183060417ccde6c2d4a9d99227..7087ca4592fc964989cc1bf440bdb4fe9faf30e5 100644 (file)
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -65,6 +65,7 @@ enum pca955x_type {
        pca9550,
        pca9551,
        pca9552,
+       ibm_pca9552,
        pca9553,
 };
 
@@ -90,6 +91,11 @@ static struct pca955x_chipdef pca955x_chipdefs[] = {
                .slv_addr       = /* 1100xxx */ 0x60,
                .slv_addr_shift = 3,
        },
+       [ibm_pca9552] = {
+               .bits           = 16,
+               .slv_addr       = /* 0110xxx */ 0x30,
+               .slv_addr_shift = 3,
+       },
        [pca9553] = {
                .bits           = 4,
                .slv_addr       = /* 110001x */ 0x62,
@@ -101,6 +107,7 @@ static const struct i2c_device_id pca955x_id[] = {
        { "pca9550", pca9550 },
        { "pca9551", pca9551 },
        { "pca9552", pca9552 },
+       { "ibm-pca9552", ibm_pca9552 },
        { "pca9553", pca9553 },
        { }
 };
@@ -412,6 +419,7 @@ static const struct of_device_id of_pca955x_match[] = {
        { .compatible = "nxp,pca9550", .data = (void *)pca9550 },
        { .compatible = "nxp,pca9551", .data = (void *)pca9551 },
        { .compatible = "nxp,pca9552", .data = (void *)pca9552 },
+       { .compatible = "ibm,pca9552", .data = (void *)ibm_pca9552 },
        { .compatible = "nxp,pca9553", .data = (void *)pca9553 },
        {},
 };