i2c: gpio: Augment all boardfiles to use open drain

We now handle the open drain mode internally in the I2C GPIO
driver, but we will get warnings from the gpiolib that we
override the default mode of the line so it becomes open
drain.

We can fix all in-kernel users by simply passing the right
flag along in the descriptor table, and we already touched
all of these files in the series so let's just tidy it up.

Cc: Steven Miao <realmz6@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Wu, Aaron <Aaron.Wu@analog.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-ep93xx/core.c

@@ -326,8 +326,10 @@ static struct gpiod_lookup_table ep93xx_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		/* Use local offsets on gpiochip/port "G" */
-		GPIO_LOOKUP_IDX("G", 1, NULL, 0, GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP_IDX("G", 0, NULL, 1, GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP_IDX("G", 1, NULL, 0,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
+		GPIO_LOOKUP_IDX("G", 0, NULL, 1,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/avila-setup.c

@@ -53,9 +53,9 @@ static struct gpiod_lookup_table avila_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/dsmg600-setup.c

@@ -72,9 +72,9 @@ static struct gpiod_lookup_table dsmg600_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/fsg-setup.c

@@ -58,9 +58,9 @@ static struct gpiod_lookup_table fsg_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/ixdp425-setup.c

@@ -126,9 +126,9 @@ static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/nas100d-setup.c

@@ -104,9 +104,9 @@ static struct gpiod_lookup_table nas100d_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ixp4xx/nslu2-setup.c

@@ -72,9 +72,9 @@ static struct gpiod_lookup_table nslu2_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SDA_PIN,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SCL_PIN,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-ks8695/board-acs5k.c

@@ -41,8 +41,10 @@
 static struct gpiod_lookup_table acs5k_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
-		GPIO_LOOKUP_IDX("KS8695", 4, NULL, 0, GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP_IDX("KS8695", 5, NULL, 1, GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP_IDX("KS8695", 4, NULL, 0,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
+		GPIO_LOOKUP_IDX("KS8695", 5, NULL, 1,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-pxa/palmz72.c

@@ -324,8 +324,10 @@ static struct soc_camera_link palmz72_iclink = {
 static struct gpiod_lookup_table palmz72_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
-		GPIO_LOOKUP_IDX("gpio-pxa", 118, NULL, 0, GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP_IDX("gpio-pxa", 117, NULL, 1, GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP_IDX("gpio-pxa", 118, NULL, 0,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
+		GPIO_LOOKUP_IDX("gpio-pxa", 117, NULL, 1,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-pxa/viper.c

@@ -463,9 +463,9 @@ static struct gpiod_lookup_table viper_i2c_gpiod_table = {
 	.dev_id		= "i2c-gpio",
 	.table		= {
 		GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SDA_GPIO,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SCL_GPIO,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 
@@ -792,9 +792,9 @@ struct gpiod_lookup_table viper_tpm_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SDA_GPIO,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SCL_GPIO,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/arm/mach-sa1100/simpad.c

@@ -327,8 +327,10 @@ static struct platform_device simpad_gpio_leds = {
 static struct gpiod_lookup_table simpad_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
-		GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1, GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
+		GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1,
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/blackfin/mach-bf533/boards/blackstamp.c

@@ -367,9 +367,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF8, NULL, 0,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF9, NULL, 1,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/blackfin/mach-bf533/boards/ezkit.c

@@ -395,9 +395,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/blackfin/mach-bf533/boards/stamp.c

@@ -517,9 +517,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF2, NULL, 0,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF3, NULL, 1,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/blackfin/mach-bf561/boards/ezkit.c

@@ -384,9 +384,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1,
-				GPIO_ACTIVE_HIGH),
+				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

arch/mips/alchemy/board-gpr.c

@@ -235,6 +235,10 @@ static struct gpiod_lookup_table gpr_i2c_gpiod_table = {
 };
 
 static struct i2c_gpio_platform_data gpr_i2c_data = {
+	/*
+	 * The open drain mode is hardwired somewhere or an electrical
+	 * property of the alchemy GPIO controller.
+	 */
 	.sda_is_open_drain	= 1,
 	.scl_is_open_drain	= 1,
 	.udelay			= 2,		/* ~100 kHz */

arch/mips/ath79/mach-pb44.c

@@ -37,9 +37,9 @@ static struct gpiod_lookup_table pb44_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SDA,
-				NULL, 0, GPIO_ACTIVE_HIGH),
+				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SCL,
-				NULL, 1, GPIO_ACTIVE_HIGH),
+				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };
 

drivers/mfd/sm501.c

@@ -1152,7 +1152,7 @@ static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm,
 	lookup->table[0].chip_hwnum = iic->pin_sda % 32;
 	lookup->table[0].con_id = NULL;
 	lookup->table[0].idx = 0;
-	lookup->table[0].flags = GPIO_ACTIVE_HIGH;
+	lookup->table[0].flags = GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN;
 	if (iic->pin_scl < 32)
 		lookup->table[1].chip_label = "SM501-LOW";
 	else
@@ -1160,7 +1160,7 @@ static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm,
 	lookup->table[1].chip_hwnum = iic->pin_scl % 32;
 	lookup->table[1].con_id = NULL;
 	lookup->table[1].idx = 1;
-	lookup->table[1].flags = GPIO_ACTIVE_HIGH;
+	lookup->table[1].flags = GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN;
 	gpiod_add_lookup_table(lookup);
 
 	icd = dev_get_platdata(&pdev->dev);