gpio: f7188x: Add F71889A GPIO support.

Add F71889A GPIO support.

Fintek F71889A is a SuperIO. It contains HWMON/GPIO/Serial Ports.

Datasheet:
http://www.alldatasheet.com/datasheet-pdf/pdf/459076/FINTEK/F71889A.html

Its virtually identical to the F71889F superio as far as gpios go.
One oddity is GPIO2 at index 0xD0; the datasheet only lists gpio's 7-5,
but it logically seems that it should continue down to 0. I'm not sure
if the driver can handle gpios that are shifted away from index 0 as it
currently stands.
Signed-off-by: Marty Plummer <netz.kernel@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-f7188x.c

@@ -37,14 +37,16 @@
 #define SIO_F71869A_ID		0x1007	/* F71869A chipset ID */
 #define SIO_F71882_ID		0x0541	/* F71882 chipset ID */
 #define SIO_F71889_ID		0x0909	/* F71889 chipset ID */
+#define SIO_F71889A_ID		0x1005	/* F71889A chipset ID */
 #define SIO_F81866_ID		0x1010	/* F81866 chipset ID */
 
-enum chips { f71869, f71869a, f71882fg, f71889f, f81866 };
+enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866 };
 
 static const char * const f7188x_names[] = {
 	"f71869",
 	"f71869a",
 	"f71882fg",
+	"f71889a",
 	"f71889f",
 	"f81866",
 };
@@ -187,6 +189,17 @@ static struct f7188x_gpio_bank f71882_gpio_bank[] = {
 	F7188X_GPIO_BANK(40, 4, 0xB0),
 };
 
+static struct f7188x_gpio_bank f71889a_gpio_bank[] = {
+	F7188X_GPIO_BANK(0, 7, 0xF0),
+	F7188X_GPIO_BANK(10, 7, 0xE0),
+	F7188X_GPIO_BANK(20, 8, 0xD0),
+	F7188X_GPIO_BANK(30, 8, 0xC0),
+	F7188X_GPIO_BANK(40, 8, 0xB0),
+	F7188X_GPIO_BANK(50, 5, 0xA0),
+	F7188X_GPIO_BANK(60, 8, 0x90),
+	F7188X_GPIO_BANK(70, 8, 0x80),
+};
+
 static struct f7188x_gpio_bank f71889_gpio_bank[] = {
 	F7188X_GPIO_BANK(0, 7, 0xF0),
 	F7188X_GPIO_BANK(10, 7, 0xE0),
@@ -382,6 +395,9 @@ static int f7188x_gpio_probe(struct platform_device *pdev)
 		data->nr_bank = ARRAY_SIZE(f71882_gpio_bank);
 		data->bank = f71882_gpio_bank;
 		break;
+	case f71889a:
+		data->nr_bank = ARRAY_SIZE(f71889a_gpio_bank);
+		data->bank = f71889a_gpio_bank;
 	case f71889f:
 		data->nr_bank = ARRAY_SIZE(f71889_gpio_bank);
 		data->bank = f71889_gpio_bank;
@@ -443,6 +459,9 @@ static int __init f7188x_find(int addr, struct f7188x_sio *sio)
 	case SIO_F71882_ID:
 		sio->type = f71882fg;
 		break;
+	case SIO_F71889A_ID:
+		sio->type = f71889a;
+		break;
 	case SIO_F71889_ID:
 		sio->type = f71889f;
 		break;
@@ -538,6 +557,6 @@ static void __exit f7188x_gpio_exit(void)
 }
 module_exit(f7188x_gpio_exit);
 
-MODULE_DESCRIPTION("GPIO driver for Super-I/O chips F71869, F71869A, F71882FG, F71889F and F81866");
+MODULE_DESCRIPTION("GPIO driver for Super-I/O chips F71869, F71869A, F71882FG, F71889A, F71889F and F81866");
 MODULE_AUTHOR("Simon Guinot <simon.guinot@sequanux.org>");
 MODULE_LICENSE("GPL");