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-rw-r--r--drivers/gpio/Kconfig3
-rw-r--r--drivers/gpio/gpio-f7188x.c104
2 files changed, 81 insertions, 26 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 0642f579196f..3f64345fe40b 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -874,10 +874,11 @@ config GPIO_104_IDI_48
module parameter.
config GPIO_F7188X
- tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
+ tristate "Fintek and Nuvoton Super-I/O GPIO support"
help
This option enables support for GPIOs found on Fintek Super-I/O
chips F71869, F71869A, F71882FG, F71889F and F81866.
+ As well as Nuvoton Super-I/O chip NCT6116D.
To compile this driver as a module, choose M here: the module will
be called f7188x-gpio.
diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
index 878458249833..29c73ea96466 100644
--- a/drivers/gpio/gpio-f7188x.c
+++ b/drivers/gpio/gpio-f7188x.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
- * GPIO driver for Fintek Super-I/O F71869, F71869A, F71882, F71889 and F81866
+ * GPIO driver for Fintek and Nuvoton Super-I/O chips
*
* Copyright (C) 2010-2013 LaCie
*
@@ -22,23 +22,36 @@
*/
#define SIO_LDSEL 0x07 /* Logical device select */
#define SIO_DEVID 0x20 /* Device ID (2 bytes) */
-#define SIO_DEVREV 0x22 /* Device revision */
-#define SIO_MANID 0x23 /* Fintek ID (2 bytes) */
-#define SIO_LD_GPIO 0x06 /* GPIO logical device */
#define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */
#define SIO_LOCK_KEY 0xAA /* Key to disable Super-I/O */
-#define SIO_FINTEK_ID 0x1934 /* Manufacturer ID */
+/*
+ * Fintek devices.
+ */
+#define SIO_FINTEK_DEVREV 0x22 /* Fintek Device revision */
+#define SIO_FINTEK_MANID 0x23 /* Fintek ID (2 bytes) */
+
+#define SIO_FINTEK_ID 0x1934 /* Manufacturer ID */
+
#define SIO_F71869_ID 0x0814 /* F71869 chipset ID */
#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 */
-#define SIO_F81804_ID 0x1502 /* F81804 chipset ID, same for f81966 */
+#define SIO_F81804_ID 0x1502 /* F81804 chipset ID, same for F81966 */
#define SIO_F81865_ID 0x0704 /* F81865 chipset ID */
+#define SIO_LD_GPIO_FINTEK 0x06 /* GPIO logical device */
+
+/*
+ * Nuvoton devices.
+ */
+#define SIO_NCT6116D_ID 0xD283 /* NCT6116D chipset ID */
+
+#define SIO_LD_GPIO_NUVOTON 0x07 /* GPIO logical device */
+
enum chips {
f71869,
@@ -49,6 +62,7 @@ enum chips {
f81866,
f81804,
f81865,
+ nct6116d,
};
static const char * const f7188x_names[] = {
@@ -60,10 +74,12 @@ static const char * const f7188x_names[] = {
"f81866",
"f81804",
"f81865",
+ "nct6116d",
};
struct f7188x_sio {
int addr;
+ int device;
enum chips type;
};
@@ -171,6 +187,9 @@ static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset,
/* Output mode register (0:open drain 1:push-pull). */
#define f7188x_gpio_out_mode(base) ((base) + 3)
+#define f7188x_gpio_dir_invert(type) ((type) == nct6116d)
+#define f7188x_gpio_data_single(type) ((type) == nct6116d)
+
static struct f7188x_gpio_bank f71869_gpio_bank[] = {
F7188X_GPIO_BANK(0, 6, 0xF0),
F7188X_GPIO_BANK(10, 8, 0xE0),
@@ -255,6 +274,17 @@ static struct f7188x_gpio_bank f81865_gpio_bank[] = {
F7188X_GPIO_BANK(60, 5, 0x90),
};
+static struct f7188x_gpio_bank nct6116d_gpio_bank[] = {
+ F7188X_GPIO_BANK(0, 8, 0xE0),
+ F7188X_GPIO_BANK(10, 8, 0xE4),
+ F7188X_GPIO_BANK(20, 8, 0xE8),
+ F7188X_GPIO_BANK(30, 8, 0xEC),
+ F7188X_GPIO_BANK(40, 8, 0xF0),
+ F7188X_GPIO_BANK(50, 8, 0xF4),
+ F7188X_GPIO_BANK(60, 8, 0xF8),
+ F7188X_GPIO_BANK(70, 1, 0xFC),
+};
+
static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
int err;
@@ -265,13 +295,16 @@ static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
err = superio_enter(sio->addr);
if (err)
return err;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
dir = superio_inb(sio->addr, f7188x_gpio_dir(bank->regbase));
superio_exit(sio->addr);
- if (dir & 1 << offset)
+ if (f7188x_gpio_dir_invert(sio->type))
+ dir = ~dir;
+
+ if (dir & BIT(offset))
return GPIO_LINE_DIRECTION_OUT;
return GPIO_LINE_DIRECTION_IN;
@@ -287,10 +320,14 @@ static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
err = superio_enter(sio->addr);
if (err)
return err;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
dir = superio_inb(sio->addr, f7188x_gpio_dir(bank->regbase));
- dir &= ~BIT(offset);
+
+ if (f7188x_gpio_dir_invert(sio->type))
+ dir |= BIT(offset);
+ else
+ dir &= ~BIT(offset);
superio_outb(sio->addr, f7188x_gpio_dir(bank->regbase), dir);
superio_exit(sio->addr);
@@ -308,11 +345,11 @@ static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset)
err = superio_enter(sio->addr);
if (err)
return err;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
dir = superio_inb(sio->addr, f7188x_gpio_dir(bank->regbase));
dir = !!(dir & BIT(offset));
- if (dir)
+ if (f7188x_gpio_data_single(sio->type) || dir)
data = superio_inb(sio->addr, f7188x_gpio_data_out(bank->regbase));
else
data = superio_inb(sio->addr, f7188x_gpio_data_in(bank->regbase));
@@ -333,7 +370,7 @@ static int f7188x_gpio_direction_out(struct gpio_chip *chip,
err = superio_enter(sio->addr);
if (err)
return err;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
data_out = superio_inb(sio->addr, f7188x_gpio_data_out(bank->regbase));
if (value)
@@ -343,7 +380,10 @@ static int f7188x_gpio_direction_out(struct gpio_chip *chip,
superio_outb(sio->addr, f7188x_gpio_data_out(bank->regbase), data_out);
dir = superio_inb(sio->addr, f7188x_gpio_dir(bank->regbase));
- dir |= BIT(offset);
+ if (f7188x_gpio_dir_invert(sio->type))
+ dir &= ~BIT(offset);
+ else
+ dir |= BIT(offset);
superio_outb(sio->addr, f7188x_gpio_dir(bank->regbase), dir);
superio_exit(sio->addr);
@@ -361,7 +401,7 @@ static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
err = superio_enter(sio->addr);
if (err)
return;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
data_out = superio_inb(sio->addr, f7188x_gpio_data_out(bank->regbase));
if (value)
@@ -389,7 +429,7 @@ static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset,
err = superio_enter(sio->addr);
if (err)
return err;
- superio_select(sio->addr, SIO_LD_GPIO);
+ superio_select(sio->addr, sio->device);
data = superio_inb(sio->addr, f7188x_gpio_out_mode(bank->regbase));
if (param == PIN_CONFIG_DRIVE_OPEN_DRAIN)
@@ -450,6 +490,10 @@ static int f7188x_gpio_probe(struct platform_device *pdev)
data->nr_bank = ARRAY_SIZE(f81865_gpio_bank);
data->bank = f81865_gpio_bank;
break;
+ case nct6116d:
+ data->nr_bank = ARRAY_SIZE(nct6116d_gpio_bank);
+ data->bank = nct6116d_gpio_bank;
+ break;
default:
return -ENODEV;
}
@@ -480,18 +524,15 @@ static int __init f7188x_find(int addr, struct f7188x_sio *sio)
{
int err;
u16 devid;
+ u16 manid;
err = superio_enter(addr);
if (err)
return err;
err = -ENODEV;
- devid = superio_inw(addr, SIO_MANID);
- if (devid != SIO_FINTEK_ID) {
- pr_debug("Not a Fintek device at 0x%08x\n", addr);
- goto err;
- }
+ sio->device = SIO_LD_GPIO_FINTEK;
devid = superio_inw(addr, SIO_DEVID);
switch (devid) {
case SIO_F71869_ID:
@@ -518,17 +559,30 @@ static int __init f7188x_find(int addr, struct f7188x_sio *sio)
case SIO_F81865_ID:
sio->type = f81865;
break;
+ case SIO_NCT6116D_ID:
+ sio->device = SIO_LD_GPIO_NUVOTON;
+ sio->type = nct6116d;
+ break;
default:
pr_info("Unsupported Fintek device 0x%04x\n", devid);
goto err;
}
+
+ /* double check manufacturer where possible */
+ if (sio->type != nct6116d) {
+ manid = superio_inw(addr, SIO_FINTEK_MANID);
+ if (manid != SIO_FINTEK_ID) {
+ pr_debug("Not a Fintek device at 0x%08x\n", addr);
+ goto err;
+ }
+ }
+
sio->addr = addr;
err = 0;
- pr_info("Found %s at %#x, revision %d\n",
- f7188x_names[sio->type],
- (unsigned int) addr,
- (int) superio_inb(addr, SIO_DEVREV));
+ pr_info("Found %s at %#x\n", f7188x_names[sio->type], (unsigned int)addr);
+ if (sio->type != nct6116d)
+ pr_info(" revision %d\n", superio_inb(addr, SIO_FINTEK_DEVREV));
err:
superio_exit(addr);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-23 03:45:50 +0100