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-rw-r--r--drivers/staging/fbtft/fb_agm1264k-fl.c20
-rw-r--r--drivers/staging/fbtft/fb_bd663474.c4
-rw-r--r--drivers/staging/fbtft/fb_ili9163.c4
-rw-r--r--drivers/staging/fbtft/fb_ili9320.c1
-rw-r--r--drivers/staging/fbtft/fb_ili9325.c4
-rw-r--r--drivers/staging/fbtft/fb_ili9340.c1
-rw-r--r--drivers/staging/fbtft/fb_s6d1121.c4
-rw-r--r--drivers/staging/fbtft/fb_sh1106.c1
-rw-r--r--drivers/staging/fbtft/fb_ssd1289.c4
-rw-r--r--drivers/staging/fbtft/fb_ssd1325.c2
-rw-r--r--drivers/staging/fbtft/fb_ssd1331.c6
-rw-r--r--drivers/staging/fbtft/fb_ssd1351.c5
-rw-r--r--drivers/staging/fbtft/fb_st7789v.c2
-rw-r--r--drivers/staging/fbtft/fb_upd161704.c4
-rw-r--r--drivers/staging/fbtft/fb_watterott.c1
-rw-r--r--drivers/staging/fbtft/fbtft-bus.c3
-rw-r--r--drivers/staging/fbtft/fbtft-core.c22
-rw-r--r--drivers/staging/fbtft/fbtft-io.c12
-rw-r--r--drivers/staging/fbtft/fbtft.h5
19 files changed, 32 insertions, 73 deletions
diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
index eeeeec97ad27..b545c2ca80a4 100644
--- a/drivers/staging/fbtft/fb_agm1264k-fl.c
+++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
@@ -84,9 +84,9 @@ static void reset(struct fbtft_par *par)
dev_dbg(par->info->device, "%s()\n", __func__);
- gpiod_set_value(par->gpio.reset, 0);
- udelay(20);
gpiod_set_value(par->gpio.reset, 1);
+ udelay(20);
+ gpiod_set_value(par->gpio.reset, 0);
mdelay(120);
}
@@ -194,12 +194,12 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
/* select chip */
if (*buf) {
/* cs1 */
- gpiod_set_value(par->CS0, 1);
- gpiod_set_value(par->CS1, 0);
- } else {
- /* cs0 */
gpiod_set_value(par->CS0, 0);
gpiod_set_value(par->CS1, 1);
+ } else {
+ /* cs0 */
+ gpiod_set_value(par->CS0, 1);
+ gpiod_set_value(par->CS1, 0);
}
gpiod_set_value(par->RS, 0); /* RS->0 (command mode) */
@@ -397,8 +397,8 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
}
kfree(convert_buf);
- gpiod_set_value(par->CS0, 1);
- gpiod_set_value(par->CS1, 1);
+ gpiod_set_value(par->CS0, 0);
+ gpiod_set_value(par->CS1, 0);
return ret;
}
@@ -419,10 +419,10 @@ static int write(struct fbtft_par *par, void *buf, size_t len)
for (i = 0; i < 8; ++i)
gpiod_set_value(par->gpio.db[i], data & (1 << i));
/* set E */
- gpiod_set_value(par->EPIN, 1);
+ gpiod_set_value(par->EPIN, 0);
udelay(5);
/* unset E - write */
- gpiod_set_value(par->EPIN, 0);
+ gpiod_set_value(par->EPIN, 1);
udelay(1);
}
diff --git a/drivers/staging/fbtft/fb_bd663474.c b/drivers/staging/fbtft/fb_bd663474.c
index e2c7646588f8..1629c2c440a9 100644
--- a/drivers/staging/fbtft/fb_bd663474.c
+++ b/drivers/staging/fbtft/fb_bd663474.c
@@ -12,7 +12,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
@@ -24,9 +23,6 @@
static int init_display(struct fbtft_par *par)
{
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
par->fbtftops.reset(par);
/* Initialization sequence from Lib_UTFT */
diff --git a/drivers/staging/fbtft/fb_ili9163.c b/drivers/staging/fbtft/fb_ili9163.c
index 05648c3ffe47..6582a2c90aaf 100644
--- a/drivers/staging/fbtft/fb_ili9163.c
+++ b/drivers/staging/fbtft/fb_ili9163.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <video/mipi_display.h>
@@ -77,9 +76,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
write_reg(par, MIPI_DCS_SOFT_RESET); /* software reset */
mdelay(500);
write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); /* exit sleep */
diff --git a/drivers/staging/fbtft/fb_ili9320.c b/drivers/staging/fbtft/fb_ili9320.c
index f2e72d14431d..a8f4c618b754 100644
--- a/drivers/staging/fbtft/fb_ili9320.c
+++ b/drivers/staging/fbtft/fb_ili9320.c
@@ -8,7 +8,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>
diff --git a/drivers/staging/fbtft/fb_ili9325.c b/drivers/staging/fbtft/fb_ili9325.c
index c9aa4cb43123..16d3b17ca279 100644
--- a/drivers/staging/fbtft/fb_ili9325.c
+++ b/drivers/staging/fbtft/fb_ili9325.c
@@ -10,7 +10,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
@@ -85,9 +84,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
bt &= 0x07;
vc &= 0x07;
vrh &= 0x0f;
diff --git a/drivers/staging/fbtft/fb_ili9340.c b/drivers/staging/fbtft/fb_ili9340.c
index 415183c7054a..704236bcaf3f 100644
--- a/drivers/staging/fbtft/fb_ili9340.c
+++ b/drivers/staging/fbtft/fb_ili9340.c
@@ -8,7 +8,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <video/mipi_display.h>
diff --git a/drivers/staging/fbtft/fb_s6d1121.c b/drivers/staging/fbtft/fb_s6d1121.c
index 8c7de3290343..62f27172f844 100644
--- a/drivers/staging/fbtft/fb_s6d1121.c
+++ b/drivers/staging/fbtft/fb_s6d1121.c
@@ -12,7 +12,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
@@ -29,9 +28,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
/* Initialization sequence from Lib_UTFT */
write_reg(par, 0x0011, 0x2004);
diff --git a/drivers/staging/fbtft/fb_sh1106.c b/drivers/staging/fbtft/fb_sh1106.c
index 6f7249493ea3..7b9ab39e1c1a 100644
--- a/drivers/staging/fbtft/fb_sh1106.c
+++ b/drivers/staging/fbtft/fb_sh1106.c
@@ -9,7 +9,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
diff --git a/drivers/staging/fbtft/fb_ssd1289.c b/drivers/staging/fbtft/fb_ssd1289.c
index 7a3fe022cc69..f27bab38b3ec 100644
--- a/drivers/staging/fbtft/fb_ssd1289.c
+++ b/drivers/staging/fbtft/fb_ssd1289.c
@@ -10,7 +10,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include "fbtft.h"
@@ -28,9 +27,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
write_reg(par, 0x00, 0x0001);
write_reg(par, 0x03, 0xA8A4);
write_reg(par, 0x0C, 0x0000);
diff --git a/drivers/staging/fbtft/fb_ssd1325.c b/drivers/staging/fbtft/fb_ssd1325.c
index 8a3140d41d8b..796a2ac3e194 100644
--- a/drivers/staging/fbtft/fb_ssd1325.c
+++ b/drivers/staging/fbtft/fb_ssd1325.c
@@ -35,8 +35,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- gpiod_set_value(par->gpio.cs, 0);
-
write_reg(par, 0xb3);
write_reg(par, 0xf0);
write_reg(par, 0xae);
diff --git a/drivers/staging/fbtft/fb_ssd1331.c b/drivers/staging/fbtft/fb_ssd1331.c
index 37622c9462aa..ec5eced7f8cb 100644
--- a/drivers/staging/fbtft/fb_ssd1331.c
+++ b/drivers/staging/fbtft/fb_ssd1331.c
@@ -81,8 +81,7 @@ 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)
- gpiod_set_value(par->gpio.dc, 0);
+ gpiod_set_value(par->gpio.dc, 0);
ret = par->fbtftops.write(par, par->buf, sizeof(u8));
if (ret < 0) {
va_end(args);
@@ -104,8 +103,7 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
return;
}
}
- if (par->gpio.dc)
- gpiod_set_value(par->gpio.dc, 1);
+ gpiod_set_value(par->gpio.dc, 1);
va_end(args);
}
diff --git a/drivers/staging/fbtft/fb_ssd1351.c b/drivers/staging/fbtft/fb_ssd1351.c
index 900b28d826b2..6fd549a424d5 100644
--- a/drivers/staging/fbtft/fb_ssd1351.c
+++ b/drivers/staging/fbtft/fb_ssd1351.c
@@ -2,7 +2,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>
@@ -188,7 +187,6 @@ static struct fbtft_display display = {
},
};
-#ifdef CONFIG_FB_BACKLIGHT
static int update_onboard_backlight(struct backlight_device *bd)
{
struct fbtft_par *par = bl_get_data(bd);
@@ -232,9 +230,6 @@ static void register_onboard_backlight(struct fbtft_par *par)
if (!par->fbtftops.unregister_backlight)
par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
}
-#else
-static void register_onboard_backlight(struct fbtft_par *par) { };
-#endif
FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1351", &display);
diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index 3c3f387936e8..30086ae03605 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -76,6 +76,8 @@ enum st7789v_command {
*/
static int init_display(struct fbtft_par *par)
{
+ par->fbtftops.reset(par);
+
/* turn off sleep mode */
write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE);
mdelay(120);
diff --git a/drivers/staging/fbtft/fb_upd161704.c b/drivers/staging/fbtft/fb_upd161704.c
index c77832ae5e5b..c680160d6380 100644
--- a/drivers/staging/fbtft/fb_upd161704.c
+++ b/drivers/staging/fbtft/fb_upd161704.c
@@ -12,7 +12,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
@@ -26,9 +25,6 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
-
/* Initialization sequence from Lib_UTFT */
/* register reset */
diff --git a/drivers/staging/fbtft/fb_watterott.c b/drivers/staging/fbtft/fb_watterott.c
index 27cc8eabcbe9..fc65ce876155 100644
--- a/drivers/staging/fbtft/fb_watterott.c
+++ b/drivers/staging/fbtft/fb_watterott.c
@@ -8,7 +8,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include "fbtft.h"
diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c
index 63c65dd67b17..3d422bc11641 100644
--- a/drivers/staging/fbtft/fbtft-bus.c
+++ b/drivers/staging/fbtft/fbtft-bus.c
@@ -135,8 +135,7 @@ 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)
- gpiod_set_value(par->gpio.dc, 1);
+ gpiod_set_value(par->gpio.dc, 1);
/* non buffered write */
if (!par->txbuf.buf)
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 61f0286fb157..771697508cec 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -37,8 +37,7 @@ int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc)
{
int ret;
- if (par->gpio.dc)
- gpiod_set_value(par->gpio.dc, dc);
+ gpiod_set_value(par->gpio.dc, dc);
ret = par->fbtftops.write(par, buf, len);
if (ret < 0)
@@ -79,7 +78,7 @@ static int fbtft_request_one_gpio(struct fbtft_par *par,
int ret = 0;
*gpiop = devm_gpiod_get_index_optional(dev, name, index,
- GPIOD_OUT_HIGH);
+ GPIOD_OUT_LOW);
if (IS_ERR(*gpiop)) {
ret = PTR_ERR(*gpiop);
dev_err(dev,
@@ -137,7 +136,6 @@ static int fbtft_request_gpios_dt(struct fbtft_par *par)
}
#endif
-#ifdef CONFIG_FB_BACKLIGHT
static int fbtft_backlight_update_status(struct backlight_device *bd)
{
struct fbtft_par *par = bl_get_data(bd);
@@ -170,6 +168,7 @@ void fbtft_unregister_backlight(struct fbtft_par *par)
par->info->bl_dev = NULL;
}
}
+EXPORT_SYMBOL(fbtft_unregister_backlight);
static const struct backlight_ops fbtft_bl_ops = {
.get_brightness = fbtft_backlight_get_brightness,
@@ -207,12 +206,7 @@ void fbtft_register_backlight(struct fbtft_par *par)
if (!par->fbtftops.unregister_backlight)
par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
}
-#else
-void fbtft_register_backlight(struct fbtft_par *par) { };
-void fbtft_unregister_backlight(struct fbtft_par *par) { };
-#endif
EXPORT_SYMBOL(fbtft_register_backlight);
-EXPORT_SYMBOL(fbtft_unregister_backlight);
static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
int ye)
@@ -230,11 +224,15 @@ static void fbtft_reset(struct fbtft_par *par)
{
if (!par->gpio.reset)
return;
+
fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
+
gpiod_set_value_cansleep(par->gpio.reset, 1);
usleep_range(20, 40);
gpiod_set_value_cansleep(par->gpio.reset, 0);
msleep(120);
+
+ gpiod_set_value_cansleep(par->gpio.cs, 1); /* Activate chip */
}
static void fbtft_update_display(struct fbtft_par *par, unsigned int start_line,
@@ -857,13 +855,11 @@ int fbtft_register_framebuffer(struct fb_info *fb_info)
fb_info->fix.smem_len >> 10, text1,
HZ / fb_info->fbdefio->delay, text2);
-#ifdef CONFIG_FB_BACKLIGHT
/* Turn on backlight if available */
if (fb_info->bl_dev) {
fb_info->bl_dev->props.power = FB_BLANK_UNBLANK;
fb_info->bl_dev->ops->update_status(fb_info->bl_dev);
}
-#endif
return 0;
@@ -921,8 +917,6 @@ static int fbtft_init_display_dt(struct fbtft_par *par)
return -EINVAL;
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
while (p) {
if (val & FBTFT_OF_INIT_CMD) {
@@ -1012,8 +1006,6 @@ int fbtft_init_display(struct fbtft_par *par)
}
par->fbtftops.reset(par);
- if (par->gpio.cs)
- gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
i = 0;
while (i < FBTFT_MAX_INIT_SEQUENCE) {
diff --git a/drivers/staging/fbtft/fbtft-io.c b/drivers/staging/fbtft/fbtft-io.c
index 0863d257d762..de1904a443c2 100644
--- a/drivers/staging/fbtft/fbtft-io.c
+++ b/drivers/staging/fbtft/fbtft-io.c
@@ -142,12 +142,12 @@ int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
data = *(u8 *)buf;
/* Start writing by pulling down /WR */
- gpiod_set_value(par->gpio.wr, 0);
+ gpiod_set_value(par->gpio.wr, 1);
/* Set data */
#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
if (data == prev_data) {
- gpiod_set_value(par->gpio.wr, 0); /* used as delay */
+ gpiod_set_value(par->gpio.wr, 1); /* used as delay */
} else {
for (i = 0; i < 8; i++) {
if ((data & 1) != (prev_data & 1))
@@ -165,7 +165,7 @@ int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
#endif
/* Pullup /WR */
- gpiod_set_value(par->gpio.wr, 1);
+ gpiod_set_value(par->gpio.wr, 0);
#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
prev_data = *(u8 *)buf;
@@ -192,12 +192,12 @@ int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
data = *(u16 *)buf;
/* Start writing by pulling down /WR */
- gpiod_set_value(par->gpio.wr, 0);
+ gpiod_set_value(par->gpio.wr, 1);
/* Set data */
#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
if (data == prev_data) {
- gpiod_set_value(par->gpio.wr, 0); /* used as delay */
+ gpiod_set_value(par->gpio.wr, 1); /* used as delay */
} else {
for (i = 0; i < 16; i++) {
if ((data & 1) != (prev_data & 1))
@@ -215,7 +215,7 @@ int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
#endif
/* Pullup /WR */
- gpiod_set_value(par->gpio.wr, 1);
+ gpiod_set_value(par->gpio.wr, 0);
#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
prev_data = *(u16 *)buf;
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 9b6bdb62093d..736cd4955b73 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -332,7 +332,10 @@ static int __init fbtft_driver_module_init(void) \
ret = spi_register_driver(&fbtft_driver_spi_driver); \
if (ret < 0) \
return ret; \
- return platform_driver_register(&fbtft_driver_platform_driver); \
+ ret = platform_driver_register(&fbtft_driver_platform_driver); \
+ if (ret < 0) \
+ spi_unregister_driver(&fbtft_driver_spi_driver); \
+ return ret; \
} \
\
static void __exit fbtft_driver_module_exit(void) \
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.