X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fgpio%2Fpca953x_gpio.c;h=5c2944067bc15374519e7ec5f7c87a167460f27f;hb=dd6638a01888871306860136203e26c80d948550;hp=07a3356b3c8713c003212d0b0b719acfc53d473f;hpb=8e9c88e3873fce9506ba6d8418031c8ef5a6afd0;p=oweals%2Fu-boot.git

diff --git a/drivers/gpio/pca953x_gpio.c b/drivers/gpio/pca953x_gpio.c
index 07a3356b3c..5c2944067b 100644
--- a/drivers/gpio/pca953x_gpio.c
+++ b/drivers/gpio/pca953x_gpio.c
@@ -15,8 +15,7 @@
  *
  * TODO:
  * 1. Support PCA957X_TYPE
- * 2. Support 24 gpio pins
- * 3. Support Polarity Inversion
+ * 2. Support Polarity Inversion
  */
 
 #include <common.h>
@@ -118,6 +117,10 @@ static int pca953x_read_regs(struct udevice *dev, int reg, u8 *val)
 		ret = dm_i2c_read(dev, reg, val, 1);
 	} else if (info->gpio_count <= 16) {
 		ret = dm_i2c_read(dev, reg << 1, val, info->bank_count);
+	} else if (info->gpio_count <= 24) {
+		/* Auto increment */
+		ret = dm_i2c_read(dev, (reg << 2) | 0x80, val,
+				  info->bank_count);
 	} else if (info->gpio_count == 40) {
 		/* Auto increment */
 		ret = dm_i2c_read(dev, (reg << 3) | 0x80, val,
@@ -139,6 +142,10 @@ static int pca953x_write_regs(struct udevice *dev, int reg, u8 *val)
 		ret = dm_i2c_write(dev, reg, val, 1);
 	} else if (info->gpio_count <= 16) {
 		ret = dm_i2c_write(dev, reg << 1, val, info->bank_count);
+	} else if (info->gpio_count <= 24) {
+		/* Auto increment */
+		ret = dm_i2c_write(dev, (reg << 2) | 0x80, val,
+				   info->bank_count);
 	} else if (info->gpio_count == 40) {
 		/* Auto increment */
 		ret = dm_i2c_write(dev, (reg << 3) | 0x80, val, info->bank_count);