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Date: Sun, 25 Nov 2018 16:53:26 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 01/26] Staging: fbtft: fbtft-core: Switch to the gpio
 descriptor interface
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 <59606a4af6426cd9fa2c10b363156b568525b63e.1543142440.git.nishadkamdar@gmail.com>
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This switches the fbtft-core to use GPIO descriptors
rather than numerical gpios: Utilize the GPIO library's
intrinsic handling of OF GPIOs and polarity.
If the line is flagged active low, gpiolib will deal with
this.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fbtft-core.c | 127 ++++++++++++-----------------
 drivers/staging/fbtft/fbtft.h      |  22 ++---
 2 files changed, 61 insertions(+), 88 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index a2df02d97a8e..75ee16074126 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -16,7 +16,7 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/fb.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 #include <linux/uaccess.h>
@@ -24,7 +24,6 @@
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 #include <video/mipi_display.h>
 
 #include "fbtft.h"
@@ -38,8 +37,8 @@ int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc)
 {
 	int ret;
 
-	if (gpio_is_valid(par->gpio.dc))
-		gpio_set_value(par->gpio.dc, dc);
+	if (par->gpio.dc)
+		gpiod_set_value(par->gpio.dc, dc);
 
 	ret = par->fbtftops.write(par, buf, len);
 	if (ret < 0)
@@ -72,7 +71,7 @@ void fbtft_dbg_hex(const struct device *dev, int groupsize,
 EXPORT_SYMBOL(fbtft_dbg_hex);
 
 static unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
-					       const struct fbtft_gpio *gpio)
+					       struct fbtft_gpio *gpio)
 {
 	int ret;
 	unsigned int val;
@@ -82,34 +81,34 @@ static unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
 
 	if (strcasecmp(gpio->name, "reset") == 0) {
 		par->gpio.reset = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	} else if (strcasecmp(gpio->name, "dc") == 0) {
 		par->gpio.dc = gpio->gpio;
-		return GPIOF_OUT_INIT_LOW;
+		return GPIOD_OUT_LOW;
 	} else if (strcasecmp(gpio->name, "cs") == 0) {
 		par->gpio.cs = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	} else if (strcasecmp(gpio->name, "wr") == 0) {
 		par->gpio.wr = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	} else if (strcasecmp(gpio->name, "rd") == 0) {
 		par->gpio.rd = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	} else if (strcasecmp(gpio->name, "latch") == 0) {
 		par->gpio.latch = gpio->gpio;
-		return GPIOF_OUT_INIT_LOW;
+		return GPIOD_OUT_LOW;
 	} else if (gpio->name[0] == 'd' && gpio->name[1] == 'b') {
 		ret = kstrtouint(&gpio->name[2], 10, &val);
 		if (ret == 0 && val < 16) {
 			par->gpio.db[val] = gpio->gpio;
-			return GPIOF_OUT_INIT_LOW;
+			return GPIOD_OUT_LOW;
 		}
 	} else if (strcasecmp(gpio->name, "led") == 0) {
 		par->gpio.led[0] = gpio->gpio;
-		return GPIOF_OUT_INIT_LOW;
+		return GPIOD_OUT_LOW;
 	} else if (strcasecmp(gpio->name, "led_") == 0) {
 		par->gpio.led[0] = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	}
 
 	return FBTFT_GPIO_NO_MATCH;
@@ -118,7 +117,8 @@ static unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
 static int fbtft_request_gpios(struct fbtft_par *par)
 {
 	struct fbtft_platform_data *pdata = par->pdata;
-	const struct fbtft_gpio *gpio;
+	struct device *dev = par->info->device;
+	struct fbtft_gpio *gpio;
 	unsigned long flags;
 	int ret;
 
@@ -136,19 +136,19 @@ static int fbtft_request_gpios(struct fbtft_par *par)
 		if (flags == FBTFT_GPIO_NO_MATCH)
 			flags = fbtft_request_gpios_match(par, gpio);
 		if (flags != FBTFT_GPIO_NO_MATCH) {
-			ret = devm_gpio_request_one(par->info->device,
-					      gpio->gpio, flags,
-					      par->info->device->driver->name);
-			if (ret < 0) {
-				dev_err(par->info->device,
-					"%s: gpio_request_one('%s'=%d) failed with %d\n",
-					__func__, gpio->name,
-					gpio->gpio, ret);
+			gpio->gpio = devm_gpiod_get(dev,
+						    dev->driver->name, flags);
+			if (IS_ERR(gpio->gpio)) {
+				ret = PTR_ERR(gpio->gpio);
+				dev_err(dev,
+					"%s: Failed to request %s GPIO:%d\n",
+					__func__, gpio->name, ret);
 				return ret;
+
 			}
 			fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par,
-				      "%s: '%s' = GPIO%d\n",
-				      __func__, gpio->name, gpio->gpio);
+				      "%s: '%s' GPIO\n",
+				      __func__, gpio->name);
 		}
 		gpio++;
 	}
@@ -158,7 +158,8 @@ static int fbtft_request_gpios(struct fbtft_par *par)
 
 #ifdef CONFIG_OF
 static int fbtft_request_one_gpio(struct fbtft_par *par,
-				  const char *name, int index, int *gpiop)
+				  const char *name, int index,
+				  struct gpio_desc **gpiop)
 {
 	struct device *dev = par->info->device;
 	struct device_node *node = dev->of_node;
@@ -166,32 +167,17 @@ static int fbtft_request_one_gpio(struct fbtft_par *par,
 	enum of_gpio_flags of_flags;
 
 	if (of_find_property(node, name, NULL)) {
-		gpio = of_get_named_gpio_flags(node, name, index, &of_flags);
-		if (gpio == -ENOENT)
-			return 0;
-		if (gpio == -EPROBE_DEFER)
-			return gpio;
-		if (gpio < 0) {
-			dev_err(dev,
-				"failed to get '%s' from DT\n", name);
-			return gpio;
-		}
-
-		/* active low translates to initially low */
-		flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
-							GPIOF_OUT_INIT_HIGH;
-		ret = devm_gpio_request_one(dev, gpio, flags,
-					    dev->driver->name);
-		if (ret) {
+		*gpiop = devm_gpiod_get_index(dev, dev->driver->name, index,
+					      GPIOD_OUT_HIGH);
+		if (IS_ERR(*gpiop)) {
+			ret = PTR_ERR(*gpiop);
 			dev_err(dev,
-				"gpio_request_one('%s'=%d) failed with %d\n",
-				name, gpio, ret);
+				"Failed to request %s GPIO:%d\n", name, ret);
 			return ret;
+
 		}
-		if (gpiop)
-			*gpiop = gpio;
-		fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
-			      __func__, name, gpio);
+		fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO\n",
+			      __func__, name);
 	}
 
 	return ret;
@@ -254,9 +240,9 @@ static int fbtft_backlight_update_status(struct backlight_device *bd)
 
 	if ((bd->props.power == FB_BLANK_UNBLANK) &&
 	    (bd->props.fb_blank == FB_BLANK_UNBLANK))
-		gpio_set_value(par->gpio.led[0], polarity);
+		gpiod_set_value(par->gpio.led[0], polarity);
 	else
-		gpio_set_value(par->gpio.led[0], !polarity);
+		gpiod_set_value(par->gpio.led[0], !polarity);
 
 	return 0;
 }
@@ -286,7 +272,7 @@ void fbtft_register_backlight(struct fbtft_par *par)
 	struct backlight_device *bd;
 	struct backlight_properties bl_props = { 0, };
 
-	if (par->gpio.led[0] == -1) {
+	if (!par->gpio.led[0]) {
 		fbtft_par_dbg(DEBUG_BACKLIGHT, par,
 			      "%s(): led pin not set, exiting.\n", __func__);
 		return;
@@ -295,7 +281,7 @@ void fbtft_register_backlight(struct fbtft_par *par)
 	bl_props.type = BACKLIGHT_RAW;
 	/* Assume backlight is off, get polarity from current state of pin */
 	bl_props.power = FB_BLANK_POWERDOWN;
-	if (!gpio_get_value(par->gpio.led[0]))
+	if (!gpiod_get_value(par->gpio.led[0]))
 		par->polarity = true;
 
 	bd = backlight_device_register(dev_driver_string(par->info->device),
@@ -333,12 +319,12 @@ static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
 
 static void fbtft_reset(struct fbtft_par *par)
 {
-	if (par->gpio.reset == -1)
+	if (!par->gpio.reset)
 		return;
 	fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
-	gpio_set_value_cansleep(par->gpio.reset, 0);
+	gpiod_set_value_cansleep(par->gpio.reset, 0);
 	usleep_range(20, 40);
-	gpio_set_value_cansleep(par->gpio.reset, 1);
+	gpiod_set_value_cansleep(par->gpio.reset, 1);
 	msleep(120);
 }
 
@@ -663,7 +649,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	int txbuflen = display->txbuflen;
 	unsigned int bpp = display->bpp;
 	unsigned int fps = display->fps;
-	int vmem_size, i;
+	int vmem_size;
 	const s16 *init_sequence = display->init_sequence;
 	char *gamma = display->gamma;
 	u32 *gamma_curves = NULL;
@@ -841,19 +827,6 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 		par->txbuf.len = txbuflen;
 	}
 
-	/* Initialize gpios to disabled */
-	par->gpio.reset = -1;
-	par->gpio.dc = -1;
-	par->gpio.rd = -1;
-	par->gpio.wr = -1;
-	par->gpio.cs = -1;
-	par->gpio.latch = -1;
-	for (i = 0; i < 16; i++) {
-		par->gpio.db[i] = -1;
-		par->gpio.led[i] = -1;
-		par->gpio.aux[i] = -1;
-	}
-
 	/* default fbtft operations */
 	par->fbtftops.write = fbtft_write_spi;
 	par->fbtftops.read = fbtft_read_spi;
@@ -1035,8 +1008,8 @@ static int fbtft_init_display_dt(struct fbtft_par *par)
 		return -EINVAL;
 
 	par->fbtftops.reset(par);
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	while (p) {
 		if (val & FBTFT_OF_INIT_CMD) {
@@ -1126,8 +1099,8 @@ int fbtft_init_display(struct fbtft_par *par)
 	}
 
 	par->fbtftops.reset(par);
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	i = 0;
 	while (i < FBTFT_MAX_INIT_SEQUENCE) {
@@ -1227,7 +1200,7 @@ static int fbtft_verify_gpios(struct fbtft_par *par)
 	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
 
 	if (pdata->display.buswidth != 9 &&  par->startbyte == 0 &&
-	    par->gpio.dc < 0) {
+	    !par->gpio.dc) {
 		dev_err(par->info->device,
 			"Missing info about 'dc' gpio. Aborting.\n");
 		return -EINVAL;
@@ -1236,12 +1209,12 @@ static int fbtft_verify_gpios(struct fbtft_par *par)
 	if (!par->pdev)
 		return 0;
 
-	if (par->gpio.wr < 0) {
+	if (!par->gpio.wr) {
 		dev_err(par->info->device, "Missing 'wr' gpio. Aborting.\n");
 		return -EINVAL;
 	}
 	for (i = 0; i < pdata->display.buswidth; i++) {
-		if (par->gpio.db[i] < 0) {
+		if (!par->gpio.db[i]) {
 			dev_err(par->info->device,
 				"Missing 'db%02d' gpio. Aborting.\n", i);
 			return -EINVAL;
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index ac427baa464a..a9eed11c29b0 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -27,7 +27,7 @@
  */
 struct fbtft_gpio {
 	char name[FBTFT_GPIO_NAME_SIZE];
-	unsigned int gpio;
+	struct gpio_desc *gpio;
 };
 
 struct fbtft_par;
@@ -134,7 +134,7 @@ struct fbtft_display {
  */
 struct fbtft_platform_data {
 	struct fbtft_display display;
-	const struct fbtft_gpio *gpios;
+	struct fbtft_gpio *gpios;
 	unsigned int rotate;
 	bool bgr;
 	unsigned int fps;
@@ -207,15 +207,15 @@ struct fbtft_par {
 	unsigned int dirty_lines_start;
 	unsigned int dirty_lines_end;
 	struct {
-		int reset;
-		int dc;
-		int rd;
-		int wr;
-		int latch;
-		int cs;
-		int db[16];
-		int led[16];
-		int aux[16];
+		struct gpio_desc *reset;
+		struct gpio_desc *dc;
+		struct gpio_desc *rd;
+		struct gpio_desc *wr;
+		struct gpio_desc *latch;
+		struct gpio_desc *cs;
+		struct gpio_desc *db[16];
+		struct gpio_desc *led[16];
+		struct gpio_desc *aux[16];
 	} gpio;
 	const s16 *init_sequence;
 	struct {

From patchwork Sun Nov 25 11:24:23 2018
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Date: Sun, 25 Nov 2018 16:54:23 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 02/26] Staging: fbtft: fbtft-bus: Switch to the gpio
 descriptor interface
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This switches the fbtft-bus to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fbtft-bus.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c
index 8ce1ff9b6c2a..2ea814d0dca5 100644
--- a/drivers/staging/fbtft/fbtft-bus.c
+++ b/drivers/staging/fbtft/fbtft-bus.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/errno.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include "fbtft.h"
 
@@ -135,8 +135,8 @@ int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
 	remain = len / 2;
 	vmem16 = (u16 *)(par->info->screen_buffer + offset);
 
-	if (par->gpio.dc != -1)
-		gpio_set_value(par->gpio.dc, 1);
+	if (!par->gpio.dc)
+		gpiod_set_value(par->gpio.dc, 1);
 
 	/* non buffered write */
 	if (!par->txbuf.buf)

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Date: Sun, 25 Nov 2018 16:55:31 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 03/26] Staging: fbtft: fbtft-io: Switch to the gpio
 descriptor interface
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This switches the fbtft-io to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fbtft-io.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-io.c b/drivers/staging/fbtft/fbtft-io.c
index b5051d3d46a6..38cdad6203ea 100644
--- a/drivers/staging/fbtft/fbtft-io.c
+++ b/drivers/staging/fbtft/fbtft-io.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/errno.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include "fbtft.h"
 
@@ -142,30 +142,30 @@ int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
 		data = *(u8 *)buf;
 
 		/* Start writing by pulling down /WR */
-		gpio_set_value(par->gpio.wr, 0);
+		gpiod_set_value(par->gpio.wr, 0);
 
 		/* Set data */
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		if (data == prev_data) {
-			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+			gpiod_set_value(par->gpio.wr, 0); /* used as delay */
 		} else {
 			for (i = 0; i < 8; i++) {
 				if ((data & 1) != (prev_data & 1))
-					gpio_set_value(par->gpio.db[i],
-						       data & 1);
+					gpiod_set_value(par->gpio.db[i],
+							data & 1);
 				data >>= 1;
 				prev_data >>= 1;
 			}
 		}
 #else
 		for (i = 0; i < 8; i++) {
-			gpio_set_value(par->gpio.db[i], data & 1);
+			gpiod_set_value(par->gpio.db[i], data & 1);
 			data >>= 1;
 		}
 #endif
 
 		/* Pullup /WR */
-		gpio_set_value(par->gpio.wr, 1);
+		gpiod_set_value(par->gpio.wr, 1);
 
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		prev_data = *(u8 *)buf;
@@ -192,30 +192,30 @@ int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
 		data = *(u16 *)buf;
 
 		/* Start writing by pulling down /WR */
-		gpio_set_value(par->gpio.wr, 0);
+		gpiod_set_value(par->gpio.wr, 0);
 
 		/* Set data */
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		if (data == prev_data) {
-			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+			gpiod_set_value(par->gpio.wr, 0); /* used as delay */
 		} else {
 			for (i = 0; i < 16; i++) {
 				if ((data & 1) != (prev_data & 1))
-					gpio_set_value(par->gpio.db[i],
-						       data & 1);
+					gpiod_set_value(par->gpio.db[i],
+							data & 1);
 				data >>= 1;
 				prev_data >>= 1;
 			}
 		}
 #else
 		for (i = 0; i < 16; i++) {
-			gpio_set_value(par->gpio.db[i], data & 1);
+			gpiod_set_value(par->gpio.db[i], data & 1);
 			data >>= 1;
 		}
 #endif
 
 		/* Pullup /WR */
-		gpio_set_value(par->gpio.wr, 1);
+		gpiod_set_value(par->gpio.wr, 1);
 
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		prev_data = *(u16 *)buf;

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Date: Sun, 25 Nov 2018 16:56:29 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 04/26] Staging: fbtft: flexfb: Switch to the gpio descriptor
 interface
Message-ID: 
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This switches the flexfb.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/flexfb.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c
index 2af474469e7d..c5fa59105a43 100644
--- a/drivers/staging/fbtft/flexfb.c
+++ b/drivers/staging/fbtft/flexfb.c
@@ -9,7 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/vmalloc.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -521,7 +521,7 @@ static int flexfb_verify_gpios_dc(struct fbtft_par *par)
 {
 	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
 
-	if (par->gpio.dc < 0) {
+	if (!par->gpio.dc) {
 		dev_err(par->info->device,
 			"Missing info about 'dc' gpio. Aborting.\n");
 		return -EINVAL;
@@ -537,22 +537,22 @@ static int flexfb_verify_gpios_db(struct fbtft_par *par)
 
 	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
 
-	if (par->gpio.dc < 0) {
+	if (!par->gpio.dc) {
 		dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
 		return -EINVAL;
 	}
-	if (par->gpio.wr < 0) {
+	if (!par->gpio.wr) {
 		dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
 		return -EINVAL;
 	}
-	if (latched && (par->gpio.latch < 0)) {
+	if (latched && !par->gpio.latch) {
 		dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
 		return -EINVAL;
 	}
 	if (latched)
 		num_db = buswidth / 2;
 	for (i = 0; i < num_db; i++) {
-		if (par->gpio.db[i] < 0) {
+		if (!par->gpio.db[i]) {
 			dev_err(par->info->device,
 				"Missing info about 'db%02d' gpio. Aborting.\n",
 				i);

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Date: Sun, 25 Nov 2018 16:57:15 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 05/26] Staging: fbtft: fbtft-device: Switch to the gpio
 descriptor interface
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This switches the fbtft-device.c to use GPIO descriptors
rather than numerical gpios: Remove gpios from platform
device structure. Neither assign statically numbers to gpios
in platform device nor allow gpios to be parsed as module
parameters.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fbtft-core.c   |  87 -------
 drivers/staging/fbtft/fbtft.h        |   1 -
 drivers/staging/fbtft/fbtft_device.c | 344 +--------------------------
 3 files changed, 8 insertions(+), 424 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 75ee16074126..904ba7470abf 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -70,92 +70,6 @@ void fbtft_dbg_hex(const struct device *dev, int groupsize,
 }
 EXPORT_SYMBOL(fbtft_dbg_hex);
 
-static unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
-					       struct fbtft_gpio *gpio)
-{
-	int ret;
-	unsigned int val;
-
-	fbtft_par_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, "%s('%s')\n",
-		      __func__, gpio->name);
-
-	if (strcasecmp(gpio->name, "reset") == 0) {
-		par->gpio.reset = gpio->gpio;
-		return GPIOD_OUT_HIGH;
-	} else if (strcasecmp(gpio->name, "dc") == 0) {
-		par->gpio.dc = gpio->gpio;
-		return GPIOD_OUT_LOW;
-	} else if (strcasecmp(gpio->name, "cs") == 0) {
-		par->gpio.cs = gpio->gpio;
-		return GPIOD_OUT_HIGH;
-	} else if (strcasecmp(gpio->name, "wr") == 0) {
-		par->gpio.wr = gpio->gpio;
-		return GPIOD_OUT_HIGH;
-	} else if (strcasecmp(gpio->name, "rd") == 0) {
-		par->gpio.rd = gpio->gpio;
-		return GPIOD_OUT_HIGH;
-	} else if (strcasecmp(gpio->name, "latch") == 0) {
-		par->gpio.latch = gpio->gpio;
-		return GPIOD_OUT_LOW;
-	} else if (gpio->name[0] == 'd' && gpio->name[1] == 'b') {
-		ret = kstrtouint(&gpio->name[2], 10, &val);
-		if (ret == 0 && val < 16) {
-			par->gpio.db[val] = gpio->gpio;
-			return GPIOD_OUT_LOW;
-		}
-	} else if (strcasecmp(gpio->name, "led") == 0) {
-		par->gpio.led[0] = gpio->gpio;
-		return GPIOD_OUT_LOW;
-	} else if (strcasecmp(gpio->name, "led_") == 0) {
-		par->gpio.led[0] = gpio->gpio;
-		return GPIOD_OUT_HIGH;
-	}
-
-	return FBTFT_GPIO_NO_MATCH;
-}
-
-static int fbtft_request_gpios(struct fbtft_par *par)
-{
-	struct fbtft_platform_data *pdata = par->pdata;
-	struct device *dev = par->info->device;
-	struct fbtft_gpio *gpio;
-	unsigned long flags;
-	int ret;
-
-	if (!(pdata && pdata->gpios))
-		return 0;
-
-	gpio = pdata->gpios;
-	while (gpio->name[0]) {
-		flags = FBTFT_GPIO_NO_MATCH;
-		/* if driver provides match function, try it first,
-		 * if no match use our own
-		 */
-		if (par->fbtftops.request_gpios_match)
-			flags = par->fbtftops.request_gpios_match(par, gpio);
-		if (flags == FBTFT_GPIO_NO_MATCH)
-			flags = fbtft_request_gpios_match(par, gpio);
-		if (flags != FBTFT_GPIO_NO_MATCH) {
-			gpio->gpio = devm_gpiod_get(dev,
-						    dev->driver->name, flags);
-			if (IS_ERR(gpio->gpio)) {
-				ret = PTR_ERR(gpio->gpio);
-				dev_err(dev,
-					"%s: Failed to request %s GPIO:%d\n",
-					__func__, gpio->name, ret);
-				return ret;
-
-			}
-			fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par,
-				      "%s: '%s' GPIO\n",
-				      __func__, gpio->name);
-		}
-		gpio++;
-	}
-
-	return 0;
-}
-
 #ifdef CONFIG_OF
 static int fbtft_request_one_gpio(struct fbtft_par *par,
 				  const char *name, int index,
@@ -836,7 +750,6 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	par->fbtftops.reset = fbtft_reset;
 	par->fbtftops.mkdirty = fbtft_mkdirty;
 	par->fbtftops.update_display = fbtft_update_display;
-	par->fbtftops.request_gpios = fbtft_request_gpios;
 	if (display->backlight)
 		par->fbtftops.register_backlight = fbtft_register_backlight;
 
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index a9eed11c29b0..7fdd3b0851ef 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -134,7 +134,6 @@ struct fbtft_display {
  */
 struct fbtft_platform_data {
 	struct fbtft_display display;
-	struct fbtft_gpio *gpios;
 	unsigned int rotate;
 	bool bgr;
 	unsigned int fps;
diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c
index 50e97da993e7..1917712cda90 100644
--- a/drivers/staging/fbtft/fbtft_device.c
+++ b/drivers/staging/fbtft/fbtft_device.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <video/mipi_display.h>
 
@@ -45,11 +45,6 @@ static int mode = -1;
 module_param(mode, int, 0000);
 MODULE_PARM_DESC(mode, "SPI mode (override device default)");
 
-static char *gpios;
-module_param(gpios, charp, 0000);
-MODULE_PARM_DESC(gpios,
-		 "List of gpios. Comma separated with the form: reset:23,dc:24 (when overriding the default, all gpios must be specified)");
-
 static unsigned int fps;
 module_param(fps, uint, 0000);
 MODULE_PARM_DESC(fps, "Frames per second (override driver default)");
@@ -101,7 +96,7 @@ MODULE_PARM_DESC(debug,
 static unsigned int verbose = 3;
 module_param(verbose, uint, 0000);
 MODULE_PARM_DESC(verbose,
-		 "0 silent, >0 show gpios, >1 show devices, >2 show devices before (default=3)");
+		 "0 silent, >1 show devices, >2 show devices before (default=3)");
 
 struct fbtft_device_display {
 	char *name;
@@ -279,12 +274,6 @@ static struct fbtft_device_display displays[] = {
 					.buswidth = 8,
 					.backlight = 1,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 				.gamma = ADAFRUIT18_GAMMA,
 			}
 		}
@@ -302,12 +291,6 @@ static struct fbtft_device_display displays[] = {
 					    adafruit18_green_tab_set_addr_win,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 				.gamma = ADAFRUIT18_GAMMA,
 			}
 		}
@@ -323,11 +306,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "led", 23 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -342,12 +320,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -362,12 +334,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -380,11 +346,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -399,12 +360,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 					.init_sequence = cberry28_init_sequence,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 22 },
-					{ "led", 18 },
-					{},
-				},
 				.gamma = CBERRY28_GAMMA,
 			}
 		}
@@ -420,9 +375,6 @@ static struct fbtft_device_display displays[] = {
 					.buswidth = 8,
 					.backlight = FBTFT_ONBOARD_BACKLIGHT,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			},
 			}
 		}
@@ -437,11 +389,6 @@ static struct fbtft_device_display displays[] = {
 					.buswidth = 8,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 13 },
-					{ "dc", 6 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -458,11 +405,6 @@ static struct fbtft_device_display displays[] = {
 					.height = 272,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -479,11 +421,6 @@ static struct fbtft_device_display displays[] = {
 					.height = 480,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -496,10 +433,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -512,9 +445,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 9,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			}
 		}
 	}, {
@@ -523,13 +453,6 @@ static struct fbtft_device_display displays[] = {
 			.modalias = "flexfb",
 			.max_speed_hz = 32000000,
 			.mode = SPI_MODE_0,
-			.platform_data = &(struct fbtft_platform_data) {
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
-			}
 		}
 	}, {
 		.name = "flexpfb",
@@ -538,24 +461,6 @@ static struct fbtft_device_display displays[] = {
 			.id = 0,
 			.dev = {
 			.release = fbtft_device_pdev_release,
-			.platform_data = &(struct fbtft_platform_data) {
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 17 },
-					{ "dc", 1 },
-					{ "wr", 0 },
-					{ "cs", 21 },
-					{ "db00", 9 },
-					{ "db01", 11 },
-					{ "db02", 18 },
-					{ "db03", 23 },
-					{ "db04", 24 },
-					{ "db05", 25 },
-					{ "db06", 8 },
-					{ "db07", 7 },
-					{ "led", 4 },
-					{},
-				},
-			},
 			}
 		}
 	}, {
@@ -570,11 +475,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = FBTFT_ONBOARD_BACKLIGHT,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 24 },
-					{ "dc", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -588,12 +488,6 @@ static struct fbtft_device_display displays[] = {
 					.buswidth = 8,
 					.backlight = 1,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 23 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -609,11 +503,6 @@ static struct fbtft_device_display displays[] = {
 				},
 				.startbyte = 0x70,
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -631,11 +520,6 @@ static struct fbtft_device_display displays[] = {
 				.startbyte = 0x70,
 				.bgr = true,
 				.fps = 50,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "led", 18 },
-					{},
-				},
 				.gamma = HY28B_GAMMA,
 			}
 		}
@@ -652,12 +536,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 22 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -673,22 +551,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = false,
-				.gpios = (const struct fbtft_gpio []) {
-					/* Wiring for LCD adapter kit */
-					{ "reset", 7 },
-					{ "dc", 0 },	/* rev 2: 2 */
-					{ "wr", 1 },	/* rev 2: 3 */
-					{ "cs", 8 },
-					{ "db00", 17 },
-					{ "db01", 18 },
-					{ "db02", 21 }, /* rev 2: 27 */
-					{ "db03", 22 },
-					{ "db04", 23 },
-					{ "db05", 24 },
-					{ "db06", 25 },
-					{ "db07", 4 },
-					{}
-				},
 			},
 			}
 		}
@@ -705,9 +567,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			},
 			}
 		}
@@ -723,11 +582,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -743,12 +597,6 @@ static struct fbtft_device_display displays[] = {
 				},
 				.startbyte = 0x70,
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -763,11 +611,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -777,10 +620,6 @@ static struct fbtft_device_display displays[] = {
 			.max_speed_hz = 4000000,
 			.mode = SPI_MODE_3,
 			.platform_data = &(struct fbtft_platform_data) {
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -793,12 +632,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 23 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -811,12 +644,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 23 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -831,9 +658,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			}
 		}
 	}, {
@@ -849,12 +673,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 22 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -871,10 +689,6 @@ static struct fbtft_device_display displays[] = {
 					.init_sequence = pitft_init_sequence,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "dc", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -888,11 +702,6 @@ static struct fbtft_device_display displays[] = {
 					.buswidth = 8,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 24 },
-					{ "dc", 25 },
-					{},
-				},
 				.gamma = PIOLED_GAMMA
 			}
 		}
@@ -908,12 +717,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 23 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -928,12 +731,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 23 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -946,11 +743,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -968,9 +760,6 @@ static struct fbtft_device_display displays[] = {
 					.fbtftops.write = write_gpio16_wr_slow,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			},
 		},
 		}
@@ -988,9 +777,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			},
 		},
 		}
@@ -1010,9 +796,6 @@ static struct fbtft_device_display displays[] = {
 						fbtft_write_gpio16_wr_latched,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			},
 		},
 		}
@@ -1028,11 +811,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1044,9 +822,6 @@ static struct fbtft_device_display displays[] = {
 			.chip_select = 0,
 			.mode = SPI_MODE_0,
 			.platform_data = &(struct fbtft_platform_data) {
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			}
 		}
 	}, {
@@ -1059,11 +834,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 24 },
-					{ "dc", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1078,12 +848,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1098,12 +862,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 25 },
-					{ "dc", 24 },
-					{ "led", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1118,12 +876,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 15 },
-					{ "dc", 25 },
-					{ "led_", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1138,12 +890,6 @@ static struct fbtft_device_display displays[] = {
 					.backlight = 1,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 15 },
-					{ "dc", 25 },
-					{ "led_", 18 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1156,11 +902,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 24 },
-					{ "dc", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1177,11 +918,6 @@ static struct fbtft_device_display displays[] = {
 						waveshare32b_init_sequence,
 				},
 				.bgr = true,
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 27 },
-					{ "dc", 22 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1194,11 +930,6 @@ static struct fbtft_device_display displays[] = {
 				.display = {
 					.buswidth = 8,
 				},
-				.gpios = (const struct fbtft_gpio []) {
-					{ "reset", 24 },
-					{ "dc", 25 },
-					{},
-				},
 			}
 		}
 	}, {
@@ -1211,9 +942,6 @@ static struct fbtft_device_display displays[] = {
 			.max_speed_hz = 0,
 			.mode = SPI_MODE_0,
 			.platform_data = &(struct fbtft_platform_data) {
-				.gpios = (const struct fbtft_gpio []) {
-					{},
-				},
 			}
 		},
 		.pdev = &(struct platform_device) {
@@ -1222,9 +950,6 @@ static struct fbtft_device_display displays[] = {
 			.dev = {
 				.release = fbtft_device_pdev_release,
 				.platform_data = &(struct fbtft_platform_data) {
-					.gpios = (const struct fbtft_gpio []) {
-						{},
-					},
 				},
 			},
 		},
@@ -1246,30 +971,30 @@ static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len)
 		data = *(u16 *)buf;
 
 		/* Start writing by pulling down /WR */
-		gpio_set_value(par->gpio.wr, 0);
+		gpiod_set_value(par->gpio.wr, 0);
 
 		/* Set data */
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		if (data == prev_data) {
-			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+			gpiod_set_value(par->gpio.wr, 0); /* used as delay */
 		} else {
 			for (i = 0; i < 16; i++) {
 				if ((data & 1) != (prev_data & 1))
-					gpio_set_value(par->gpio.db[i],
-						       data & 1);
+					gpiod_set_value(par->gpio.db[i],
+							data & 1);
 				data >>= 1;
 				prev_data >>= 1;
 			}
 		}
 #else
 		for (i = 0; i < 16; i++) {
-			gpio_set_value(par->gpio.db[i], data & 1);
+			gpiod_set_value(par->gpio.db[i], data & 1);
 			data >>= 1;
 		}
 #endif
 
 		/* Pullup /WR */
-		gpio_set_value(par->gpio.wr, 1);
+		gpiod_set_value(par->gpio.wr, 1);
 
 #ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
 		prev_data = *(u16 *)buf;
@@ -1289,9 +1014,6 @@ static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
 	write_reg(par, 0x2C);
 }
 
-/* used if gpios parameter is present */
-static struct fbtft_gpio fbtft_device_param_gpios[MAX_GPIOS + 1] = { };
-
 static void fbtft_device_pdev_release(struct device *dev)
 {
 /* Needed to silence this message:
@@ -1382,11 +1104,8 @@ static int __init fbtft_device_init(void)
 {
 	struct spi_board_info *spi = NULL;
 	struct fbtft_platform_data *pdata;
-	const struct fbtft_gpio *gpio = NULL;
-	char *p_gpio, *p_name, *p_num;
 	bool found = false;
 	int i = 0;
-	long val;
 	int ret = 0;
 
 	if (!name) {
@@ -1404,38 +1123,6 @@ static int __init fbtft_device_init(void)
 		return -EINVAL;
 	}
 
-	/* parse module parameter: gpios */
-	while ((p_gpio = strsep(&gpios, ","))) {
-		if (!strchr(p_gpio, ':')) {
-			pr_err("error: missing ':' in gpios parameter: %s\n",
-			       p_gpio);
-			return -EINVAL;
-		}
-		p_num = p_gpio;
-		p_name = strsep(&p_num, ":");
-		if (!p_name || !p_num) {
-			pr_err("something bad happened parsing gpios parameter: %s\n",
-			       p_gpio);
-			return -EINVAL;
-		}
-		ret = kstrtol(p_num, 10, &val);
-		if (ret) {
-			pr_err("could not parse number in gpios parameter: %s:%s\n",
-			       p_name, p_num);
-			return -EINVAL;
-		}
-		strncpy(fbtft_device_param_gpios[i].name, p_name,
-			FBTFT_GPIO_NAME_SIZE - 1);
-		fbtft_device_param_gpios[i++].gpio = (int)val;
-		if (i == MAX_GPIOS) {
-			pr_err("gpios parameter: exceeded max array size: %d\n",
-			       MAX_GPIOS);
-			return -EINVAL;
-		}
-	}
-	if (fbtft_device_param_gpios[0].name[0])
-		gpio = fbtft_device_param_gpios;
-
 	if (verbose > 2) {
 		pr_spi_devices(); /* print list of registered SPI devices */
 		pr_p_devices(); /* print list of 'fb' platform devices */
@@ -1516,8 +1203,6 @@ static int __init fbtft_device_init(void)
 				pdata->txbuflen = txbuflen;
 			if (init_num)
 				pdata->display.init_sequence = init;
-			if (gpio)
-				pdata->gpios = gpio;
 			if (custom) {
 				pdata->display.width = width;
 				pdata->display.height = height;
@@ -1549,19 +1234,6 @@ static int __init fbtft_device_init(void)
 		return -EINVAL;
 	}
 
-	if (verbose && pdata && pdata->gpios) {
-		gpio = pdata->gpios;
-		pr_info("GPIOS used by '%s':\n", name);
-		found = false;
-		while (verbose && gpio->name[0]) {
-			pr_info("'%s' = GPIO%d\n", gpio->name, gpio->gpio);
-			gpio++;
-			found = true;
-		}
-		if (!found)
-			pr_info("(none)\n");
-	}
-
 	if (spi_device && (verbose > 1))
 		pr_spi_devices();
 	if (p_device && (verbose > 1))

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Date: Sun, 25 Nov 2018 16:58:14 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 06/26] Staging: fbtft: fb_upd161704: Switch to the gpio
 descriptor interface
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This switches the fb_upd161704.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_upd161704.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_upd161704.c b/drivers/staging/fbtft/fb_upd161704.c
index acc425fdf34e..564a38e34440 100644
--- a/drivers/staging/fbtft/fb_upd161704.c
+++ b/drivers/staging/fbtft/fb_upd161704.c
@@ -12,7 +12,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -26,8 +26,8 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	/* Initialization sequence from Lib_UTFT */
 

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Date: Sun, 25 Nov 2018 16:59:01 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 07/26] Staging: fbtft: fb_sh1106: Switch to the gpio
 descriptor interface
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This switches the fb_sh1106.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_sh1106.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_sh1106.c b/drivers/staging/fbtft/fb_sh1106.c
index 00096f8d249a..6f7249493ea3 100644
--- a/drivers/staging/fbtft/fb_sh1106.c
+++ b/drivers/staging/fbtft/fb_sh1106.c
@@ -9,7 +9,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"

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Date: Sun, 25 Nov 2018 16:59:50 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 08/26] Staging: fbtft: fb_uc1611: Switch to the gpio
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This switches the fb_uc1611.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_uc1611.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_uc1611.c b/drivers/staging/fbtft/fb_uc1611.c
index dfaf8bc70f73..65681d0fe200 100644
--- a/drivers/staging/fbtft/fb_uc1611.c
+++ b/drivers/staging/fbtft/fb_uc1611.c
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -251,7 +251,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 			}
 			break;
 		}
-		gpio_set_value(par->gpio.dc, 1);
+		gpiod_set_value(par->gpio.dc, 1);
 
 		/* Write data */
 		ret = par->fbtftops.write(par, par->txbuf.buf, len / 2);

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Date: Sun, 25 Nov 2018 17:00:37 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 09/26] Staging: fbtft: fb_s6d1211: Switch to the gpio
 descriptor interface
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This switches the fb_s6d1211.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_s6d1121.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_s6d1121.c b/drivers/staging/fbtft/fb_s6d1121.c
index aa716f33420a..b3d0701880fe 100644
--- a/drivers/staging/fbtft/fb_s6d1121.c
+++ b/drivers/staging/fbtft/fb_s6d1121.c
@@ -12,7 +12,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -29,8 +29,8 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	/* Initialization sequence from Lib_UTFT */
 

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Date: Sun, 25 Nov 2018 17:01:24 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 10/26] Staging: fbtft: fb_ili9320: Switch to the gpio
 descriptor interface
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This switches the fb_ili9320.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ili9320.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_ili9320.c b/drivers/staging/fbtft/fb_ili9320.c
index 740c0acbecd8..ea6e001288ce 100644
--- a/drivers/staging/fbtft/fb_ili9320.c
+++ b/drivers/staging/fbtft/fb_ili9320.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 

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Date: Sun, 25 Nov 2018 17:02:35 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 11/26] Staging: fbtft: fb_ili9340: Switch to the gpio
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This switches the fb_ili9340.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ili9340.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_ili9340.c b/drivers/staging/fbtft/fb_ili9340.c
index 430f21e50f4d..415183c7054a 100644
--- a/drivers/staging/fbtft/fb_ili9340.c
+++ b/drivers/staging/fbtft/fb_ili9340.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 #include <video/mipi_display.h>
 

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Date: Sun, 25 Nov 2018 17:04:29 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 12/26] Staging: fbtft: fb_ssd1325: Switch to the gpio
 descriptor interface
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This switches the fb_ssd1325.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1325.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ssd1325.c b/drivers/staging/fbtft/fb_ssd1325.c
index f974f7fc4d79..8a3140d41d8b 100644
--- a/drivers/staging/fbtft/fb_ssd1325.c
+++ b/drivers/staging/fbtft/fb_ssd1325.c
@@ -6,7 +6,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -35,7 +35,7 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	gpio_set_value(par->gpio.cs, 0);
+	gpiod_set_value(par->gpio.cs, 0);
 
 	write_reg(par, 0xb3);
 	write_reg(par, 0xf0);
@@ -155,7 +155,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 		}
 	}
 
-	gpio_set_value(par->gpio.dc, 1);
+	gpiod_set_value(par->gpio.dc, 1);
 
 	/* Write data */
 	ret = par->fbtftops.write(par, par->txbuf.buf,

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Date: Sun, 25 Nov 2018 17:05:14 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 13/26] Staging: fbtft: fb_ili9325: Switch to the gpio
 descriptor interface
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This switches the fb_ili9325.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ili9325.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ili9325.c b/drivers/staging/fbtft/fb_ili9325.c
index 2cf75f2e03e2..b090e7ab6fdd 100644
--- a/drivers/staging/fbtft/fb_ili9325.c
+++ b/drivers/staging/fbtft/fb_ili9325.c
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -85,8 +85,8 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	bt &= 0x07;
 	vc &= 0x07;

From patchwork Sun Nov 25 11:35:49 2018
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Date: Sun, 25 Nov 2018 17:05:49 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 14/26] Staging: fbtft: fb_ssd1289: Switch to the gpio
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This switches the fb_ssd1289.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1289.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ssd1289.c b/drivers/staging/fbtft/fb_ssd1289.c
index c9b18b3ba4ab..bbf75f795234 100644
--- a/drivers/staging/fbtft/fb_ssd1289.c
+++ b/drivers/staging/fbtft/fb_ssd1289.c
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 
 #include "fbtft.h"
 
@@ -28,8 +28,8 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	write_reg(par, 0x00, 0x0001);
 	write_reg(par, 0x03, 0xA8A4);

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Date: Sun, 25 Nov 2018 17:06:28 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 15/26] Staging: fbtft: fb_ssd1351: Switch to the gpio
 descriptor interface
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This switches the fb_ssd1351.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1351.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_ssd1351.c b/drivers/staging/fbtft/fb_ssd1351.c
index 3da091b4d297..a8980d9f7557 100644
--- a/drivers/staging/fbtft/fb_ssd1351.c
+++ b/drivers/staging/fbtft/fb_ssd1351.c
@@ -2,7 +2,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 

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Date: Sun, 25 Nov 2018 17:07:07 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 16/26] Staging: fbtft: fb_uc1701: Switch to the gpio
 descriptor interface
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This switches the fb_uc1701.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_uc1701.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_uc1701.c b/drivers/staging/fbtft/fb_uc1701.c
index 0a3531d6eb39..e4ccc73868a7 100644
--- a/drivers/staging/fbtft/fb_uc1701.c
+++ b/drivers/staging/fbtft/fb_uc1701.c
@@ -11,7 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -136,9 +136,9 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 		write_reg(par, LCD_PAGE_ADDRESS | (u8)y);
 		write_reg(par, 0x00);
 		write_reg(par, LCD_COL_ADDRESS);
-		gpio_set_value(par->gpio.dc, 1);
+		gpiod_set_value(par->gpio.dc, 1);
 		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
-		gpio_set_value(par->gpio.dc, 0);
+		gpiod_set_value(par->gpio.dc, 0);
 	}
 
 	if (ret < 0)

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Date: Sun, 25 Nov 2018 17:07:45 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 17/26] Staging: fbtft: fb_ssd1306: Switch to the gpio
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This switches the fb_ssd1306.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1306.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c
index 50172ddd94ae..d7c5e2e0eee9 100644
--- a/drivers/staging/fbtft/fb_ssd1306.c
+++ b/drivers/staging/fbtft/fb_ssd1306.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -190,7 +190,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 	}
 
 	/* Write data */
-	gpio_set_value(par->gpio.dc, 1);
+	gpiod_set_value(par->gpio.dc, 1);
 	ret = par->fbtftops.write(par, par->txbuf.buf, xres * yres / 8);
 	if (ret < 0)
 		dev_err(par->info->device, "write failed and returned: %d\n",

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Date: Sun, 25 Nov 2018 17:08:23 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 18/26] Staging: fbtft: fb_bd663474: Switch to the gpio
 descriptor interface
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 <af953b8096c89f8248fabd7b728628005b5069eb.1543142441.git.nishadkamdar@gmail.com>
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This switches the fb_bd663474.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_bd663474.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_bd663474.c b/drivers/staging/fbtft/fb_bd663474.c
index a58c514f4721..b6c6d66e4eb1 100644
--- a/drivers/staging/fbtft/fb_bd663474.c
+++ b/drivers/staging/fbtft/fb_bd663474.c
@@ -12,7 +12,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -24,8 +24,8 @@
 
 static int init_display(struct fbtft_par *par)
 {
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	par->fbtftops.reset(par);
 

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Date: Sun, 25 Nov 2018 17:09:01 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 19/26] Staging: fbtft: fb_ssd1331: Switch to the gpio
 descriptor interface
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This switches the fb_ssd1331.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1331.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ssd1331.c b/drivers/staging/fbtft/fb_ssd1331.c
index 0b614c84822e..9f54fe28d511 100644
--- a/drivers/staging/fbtft/fb_ssd1331.c
+++ b/drivers/staging/fbtft/fb_ssd1331.c
@@ -2,7 +2,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -80,8 +80,8 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
 	va_start(args, len);
 
 	*buf = (u8)va_arg(args, unsigned int);
-	if (par->gpio.dc != -1)
-		gpio_set_value(par->gpio.dc, 0);
+	if (!par->gpio.dc)
+		gpiod_set_value(par->gpio.dc, 0);
 	ret = par->fbtftops.write(par, par->buf, sizeof(u8));
 	if (ret < 0) {
 		va_end(args);
@@ -103,8 +103,8 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
 			return;
 		}
 	}
-	if (par->gpio.dc != -1)
-		gpio_set_value(par->gpio.dc, 1);
+	if (!par->gpio.dc)
+		gpiod_set_value(par->gpio.dc, 1);
 	va_end(args);
 }
 

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Date: Sun, 25 Nov 2018 17:09:44 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 20/26] Staging: fbtft: fb_ili9163: Switch to the gpio
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This switches the fb_ili9163.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ili9163.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ili9163.c b/drivers/staging/fbtft/fb_ili9163.c
index 86e140244aab..d609a2b67db9 100644
--- a/drivers/staging/fbtft/fb_ili9163.c
+++ b/drivers/staging/fbtft/fb_ili9163.c
@@ -11,7 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 #include <video/mipi_display.h>
 
@@ -77,8 +77,8 @@ static int init_display(struct fbtft_par *par)
 {
 	par->fbtftops.reset(par);
 
-	if (par->gpio.cs != -1)
-		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+	if (!par->gpio.cs)
+		gpiod_set_value(par->gpio.cs, 0);  /* Activate chip */
 
 	write_reg(par, MIPI_DCS_SOFT_RESET); /* software reset */
 	mdelay(500);

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Date: Sun, 25 Nov 2018 17:10:24 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 21/26] Staging: fbtft: fb_agm1264k-fl: Switch to the gpio
 descriptor interface
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This switches the fb_agm1264k-fl.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_agm1264k-fl.c | 52 +++++++++++++-------------
 1 file changed, 26 insertions(+), 26 deletions(-)

diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
index f6f30f5bf15a..8f27bd8da17d 100644
--- a/drivers/staging/fbtft/fb_agm1264k-fl.c
+++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 
@@ -79,14 +79,14 @@ static int init_display(struct fbtft_par *par)
 
 static void reset(struct fbtft_par *par)
 {
-	if (par->gpio.reset == -1)
+	if (!par->gpio.reset)
 		return;
 
 	dev_dbg(par->info->device, "%s()\n", __func__);
 
-	gpio_set_value(par->gpio.reset, 0);
+	gpiod_set_value(par->gpio.reset, 0);
 	udelay(20);
-	gpio_set_value(par->gpio.reset, 1);
+	gpiod_set_value(par->gpio.reset, 1);
 	mdelay(120);
 }
 
@@ -98,30 +98,30 @@ static int verify_gpios(struct fbtft_par *par)
 	dev_dbg(par->info->device,
 		"%s()\n", __func__);
 
-	if (par->EPIN < 0) {
+	if (!par->EPIN) {
 		dev_err(par->info->device,
 			"Missing info about 'wr' (aka E) gpio. Aborting.\n");
 		return -EINVAL;
 	}
 	for (i = 0; i < 8; ++i) {
-		if (par->gpio.db[i] < 0) {
+		if (!par->gpio.db[i]) {
 			dev_err(par->info->device,
 				"Missing info about 'db[%i]' gpio. Aborting.\n",
 				i);
 			return -EINVAL;
 		}
 	}
-	if (par->CS0 < 0) {
+	if (!par->CS0) {
 		dev_err(par->info->device,
 			"Missing info about 'cs0' gpio. Aborting.\n");
 		return -EINVAL;
 	}
-	if (par->CS1 < 0) {
+	if (!par->CS1) {
 		dev_err(par->info->device,
 			"Missing info about 'cs1' gpio. Aborting.\n");
 		return -EINVAL;
 	}
-	if (par->RW < 0) {
+	if (!par->RW) {
 		dev_err(par->info->device,
 			"Missing info about 'rw' gpio. Aborting.\n");
 		return -EINVAL;
@@ -139,22 +139,22 @@ request_gpios_match(struct fbtft_par *par, const struct fbtft_gpio *gpio)
 	if (strcasecmp(gpio->name, "wr") == 0) {
 		/* left ks0108 E pin */
 		par->EPIN = gpio->gpio;
-		return GPIOF_OUT_INIT_LOW;
+		return GPIOD_OUT_LOW;
 	} else if (strcasecmp(gpio->name, "cs0") == 0) {
 		/* left ks0108 controller pin */
 		par->CS0 = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	} else if (strcasecmp(gpio->name, "cs1") == 0) {
 		/* right ks0108 controller pin */
 		par->CS1 = gpio->gpio;
-		return GPIOF_OUT_INIT_HIGH;
+		return GPIOD_OUT_HIGH;
 	}
 
 	/* if write (rw = 0) e(1->0) perform write */
 	/* if read (rw = 1) e(0->1) set data on D0-7*/
 	else if (strcasecmp(gpio->name, "rw") == 0) {
 		par->RW = gpio->gpio;
-		return GPIOF_OUT_INIT_LOW;
+		return GPIOD_OUT_LOW;
 	}
 
 	return FBTFT_GPIO_NO_MATCH;
@@ -194,15 +194,15 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
 	/* select chip */
 	if (*buf) {
 		/* cs1 */
-		gpio_set_value(par->CS0, 1);
-		gpio_set_value(par->CS1, 0);
+		gpiod_set_value(par->CS0, 1);
+		gpiod_set_value(par->CS1, 0);
 	} else {
 		/* cs0 */
-		gpio_set_value(par->CS0, 0);
-		gpio_set_value(par->CS1, 1);
+		gpiod_set_value(par->CS0, 0);
+		gpiod_set_value(par->CS1, 1);
 	}
 
-	gpio_set_value(par->RS, 0); /* RS->0 (command mode) */
+	gpiod_set_value(par->RS, 0); /* RS->0 (command mode) */
 	len--;
 
 	if (len) {
@@ -364,7 +364,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 			write_reg(par, 0x00, (0x17 << 3) | (u8)y);
 
 			/* write bitmap */
-			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			gpiod_set_value(par->RS, 1); /* RS->1 (data mode) */
 			ret = par->fbtftops.write(par, buf, len);
 			if (ret < 0)
 				dev_err(par->info->device,
@@ -387,7 +387,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 			write_reg(par, 0x01, (0x17 << 3) | (u8)y);
 
 			/* write bitmap */
-			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			gpiod_set_value(par->RS, 1); /* RS->1 (data mode) */
 			par->fbtftops.write(par, buf, len);
 			if (ret < 0)
 				dev_err(par->info->device,
@@ -397,8 +397,8 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 	}
 	kfree(convert_buf);
 
-	gpio_set_value(par->CS0, 1);
-	gpio_set_value(par->CS1, 1);
+	gpiod_set_value(par->CS0, 1);
+	gpiod_set_value(par->CS1, 1);
 
 	return ret;
 }
@@ -408,7 +408,7 @@ static int write(struct fbtft_par *par, void *buf, size_t len)
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
 			  "%s(len=%d): ", __func__, len);
 
-	gpio_set_value(par->RW, 0); /* set write mode */
+	gpiod_set_value(par->RW, 0); /* set write mode */
 
 	while (len--) {
 		u8 i, data;
@@ -417,12 +417,12 @@ static int write(struct fbtft_par *par, void *buf, size_t len)
 
 		/* set data bus */
 		for (i = 0; i < 8; ++i)
-			gpio_set_value(par->gpio.db[i], data & (1 << i));
+			gpiod_set_value(par->gpio.db[i], data & (1 << i));
 		/* set E */
-		gpio_set_value(par->EPIN, 1);
+		gpiod_set_value(par->EPIN, 1);
 		udelay(5);
 		/* unset E - write */
-		gpio_set_value(par->EPIN, 0);
+		gpiod_set_value(par->EPIN, 0);
 		udelay(1);
 	}
 

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Date: Sun, 25 Nov 2018 17:11:26 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 22/26] Staging: fbtft: fb_pcd8544: Switch to the gpio
 descriptor interface
Message-ID: 
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This switches the fb_pcd8544.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_pcd8544.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_pcd8544.c b/drivers/staging/fbtft/fb_pcd8544.c
index 32172f8f79f0..ad49973ad594 100644
--- a/drivers/staging/fbtft/fb_pcd8544.c
+++ b/drivers/staging/fbtft/fb_pcd8544.c
@@ -11,7 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -119,7 +119,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 	}
 
 	/* Write data */
-	gpio_set_value(par->gpio.dc, 1);
+	gpiod_set_value(par->gpio.dc, 1);
 	ret = par->fbtftops.write(par, par->txbuf.buf, 6 * 84);
 	if (ret < 0)
 		dev_err(par->info->device, "write failed and returned: %d\n",

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Date: Sun, 25 Nov 2018 17:12:09 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 23/26] Staging: fbtft: fb_ssd1305: Switch to the gpio
 descriptor interface
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This switches the fb_ssd1305.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ssd1305.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ssd1305.c b/drivers/staging/fbtft/fb_ssd1305.c
index 3515888d94c9..020fe48fed0b 100644
--- a/drivers/staging/fbtft/fb_ssd1305.c
+++ b/drivers/staging/fbtft/fb_ssd1305.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -168,7 +168,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 	}
 
 	/* Write data */
-	gpio_set_value(par->gpio.dc, 1);
+	gpiod_set_value(par->gpio.dc, 1);
 	ret = par->fbtftops.write(par, par->txbuf.buf,
 				  par->info->var.xres * par->info->var.yres /
 				  8);

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Date: Sun, 25 Nov 2018 17:13:01 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 24/26] Staging: fbtft: fb_tls8204: Switch to the gpio
 descriptor interface
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 <413693a296f8f890731369ccd755081466f81df7.1543142441.git.nishadkamdar@gmail.com>
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Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
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This switches the fb_tls8204.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_tls8204.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/fbtft/fb_tls8204.c b/drivers/staging/fbtft/fb_tls8204.c
index 277b6ed9c725..bec6dd0ffb01 100644
--- a/drivers/staging/fbtft/fb_tls8204.c
+++ b/drivers/staging/fbtft/fb_tls8204.c
@@ -12,7 +12,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -94,7 +94,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 		/* The display is 102x68 but the LCD is 84x48.
 		 * Set the write pointer at the start of each row.
 		 */
-		gpio_set_value(par->gpio.dc, 0);
+		gpiod_set_value(par->gpio.dc, 0);
 		write_reg(par, 0x80 | 0);
 		write_reg(par, 0x40 | y);
 
@@ -109,7 +109,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 			*buf++ = ch;
 		}
 		/* Write the row */
-		gpio_set_value(par->gpio.dc, 1);
+		gpiod_set_value(par->gpio.dc, 1);
 		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
 		if (ret < 0) {
 			dev_err(par->info->device,

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Date: Sun, 25 Nov 2018 17:13:52 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 25/26] Staging: fbtft: fb_watterott: Switch to the gpio
 descriptor interface
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 <eadbfca17c916cf29d6bd62d316e9c1797f2b70f.1543142441.git.nishadkamdar@gmail.com>
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Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
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 linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
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This switches the fb_watterott.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_watterott.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_watterott.c b/drivers/staging/fbtft/fb_watterott.c
index e77178157f1b..0a5206d28da4 100644
--- a/drivers/staging/fbtft/fb_watterott.c
+++ b/drivers/staging/fbtft/fb_watterott.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 
 #include "fbtft.h"
@@ -213,7 +213,7 @@ static int set_var(struct fbtft_par *par)
 
 static int verify_gpios(struct fbtft_par *par)
 {
-	if (par->gpio.reset < 0) {
+	if (!par->gpio.reset) {
 		dev_err(par->info->device, "Missing 'reset' gpio. Aborting.\n");
 		return -EINVAL;
 	}

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Date: Sun, 25 Nov 2018 17:14:34 +0530
From: Nishad Kamdar <nishadkamdar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 26/26] Staging: fbtft: fb_ra8875: Switch to the gpio
 descriptor interface
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 <d9b510e30805d4d5aea8544a552a9c1c49d9de41.1543142441.git.nishadkamdar@gmail.com>
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Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
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This switches the fb_ra8875.c to use GPIO descriptors
rather than numerical gpios.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
---
 drivers/staging/fbtft/fb_ra8875.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ra8875.c b/drivers/staging/fbtft/fb_ra8875.c
index 5d3b76ca74d8..70b37fc7fb66 100644
--- a/drivers/staging/fbtft/fb_ra8875.c
+++ b/drivers/staging/fbtft/fb_ra8875.c
@@ -9,7 +9,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include "fbtft.h"
 
 #define DRVNAME "fb_ra8875"
@@ -39,7 +39,7 @@ static int write_spi(struct fbtft_par *par, void *buf, size_t len)
 
 static int init_display(struct fbtft_par *par)
 {
-	gpio_set_value(par->gpio.dc, 1);
+	gpiod_set_value(par->gpio.dc, 1);
 
 	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
 		      "%s()\n", __func__);