gpio: it87: Add support for IT8613

This was tested on actual hardware and found to work fine, but currently
the official specifications of this chip could not be obtained to
confirm the numbers.

Signed-off-by: Leonid Bloch <lbloch@janustech.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 11 insertions, 1 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 7429b30e61b0..f7a0f576f918 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -693,7 +693,8 @@ config GPIO_IT87
           Say yes here to support GPIO functionality of IT87xx Super I/O chips.
 
           This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
-          supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
+          supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
+          well.
 
           To compile this driver as a module, choose M here: the module will
           be called gpio_it87
diff --git a/drivers/gpio/gpio-it87.c b/drivers/gpio/gpio-it87.c
index d34f517fdd44..389ecd8b7d26 100644
--- a/drivers/gpio/gpio-it87.c
+++ b/drivers/gpio/gpio-it87.c
@@ -35,6 +35,7 @@
 
 /* Chip Id numbers */
 #define NO_DEV_ID       0xffff
+#define IT8613_ID       0x8613
 #define IT8620_ID       0x8620
 #define IT8628_ID       0x8628
 #define IT8718_ID       0x8718
@@ -308,6 +309,14 @@ static int __init it87_gpio_init(void)
         it87_gpio->chip = it87_template_chip;
 
         switch (chip_type) {
+        case IT8613_ID:
+                gpio_ba_reg = 0x62;
+                it87_gpio->io_size = 8;  /* it8613 only needs 6, use 8 for alignment */
+                it87_gpio->output_base = 0xc8;
+                it87_gpio->simple_base = 0xc0;
+                it87_gpio->simple_size = 6;
+                it87_gpio->chip.ngpio = 64;  /* has 48, use 64 for convenient calc */
+                break;
         case IT8620_ID:
         case IT8628_ID:
                 gpio_ba_reg = 0x62;