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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>
This commit is contained in:
Eddie James 2020-08-03 09:50:55 -05:00 committed by Pavel Machek
parent 8ebe6d29a3
commit 46de3adb52
1 changed files with 8 additions and 0 deletions
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8
drivers/leds/leds-pca955x.c
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@ -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 },
{},
};