gpio-f7188x: add support Fintek F81804 & F81966

Basic implementation of driver is used to support Fintek
F81804 & F81966 gpios with custom register set.

Signed-off-by: Steffen Kothe <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-f7188x.c

···
 #define SIO_F71889_ID		0x0909	/* F71889 chipset ID */
 #define SIO_F71889A_ID		0x1005	/* F71889A chipset ID */
 #define SIO_F81866_ID		0x1010	/* F81866 chipset ID */
+#define SIO_F81804_ID		0x1502  /* F81804 chipset ID, same for f81966 */
 
-enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866 };
+
+enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866, f81804 };
 
 static const char * const f7188x_names[] = {
 	"f71869",
···
 	"f71889a",
 	"f71889f",
 	"f81866",
+	"f81804",
 };
 
 struct f7188x_sio {
···
 	F7188X_GPIO_BANK(70, 8, 0x80),
 	F7188X_GPIO_BANK(80, 8, 0x88),
 };
+
+
+static struct f7188x_gpio_bank f81804_gpio_bank[] = {
+	F7188X_GPIO_BANK(0, 8, 0xF0),
+	F7188X_GPIO_BANK(10, 8, 0xE0),
+	F7188X_GPIO_BANK(20, 8, 0xD0),
+	F7188X_GPIO_BANK(50, 8, 0xA0),
+	F7188X_GPIO_BANK(60, 8, 0x90),
+	F7188X_GPIO_BANK(70, 8, 0x80),
+	F7188X_GPIO_BANK(90, 8, 0x98),
+};
+
 
 static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
···
 		data->nr_bank = ARRAY_SIZE(f81866_gpio_bank);
 		data->bank = f81866_gpio_bank;
 		break;
+	case  f81804:
+		data->nr_bank = ARRAY_SIZE(f81804_gpio_bank);
+		data->bank = f81804_gpio_bank;
+		break;
 	default:
 		return -ENODEV;
 	}
···
 		break;
 	case SIO_F81866_ID:
 		sio->type = f81866;
+		break;
+	case SIO_F81804_ID:
+		sio->type = f81804;
 		break;
 	default:
 		pr_info(DRVNAME ": Unsupported Fintek device 0x%04x\n", devid);