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authorJan Sebastian Götte <linux@jaseg.net>2019-07-17 23:41:37 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-25 10:09:29 +0200
commit92e3e884887c0d278042fbbb6f6c9b41d6addb71 (patch)
treed431fb21f1a93e43ae13cbd9da8cf6c033518e57 /drivers/staging
parent610504301235e6d7c5a8505d1d3401bed0403d05 (diff)
Staging: fbtft: Fix GPIO handling
Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor interface") breaks GPIO handling. In several places, checks to only set a GPIO if it was configured ended up backwards. I have tested this fix. The fixed driver works with a ili9486 display connected to a raspberry pi via SPI. Fixes: c440eee1a7a1d ("Staging: fbtft: Switch to the gpio descriptor interface") Tested-by: Jan Sebastian Götte <linux@jaseg.net> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Signed-off-by: Jan Sebastian Götte <linux@jaseg.net> Link: https://lore.kernel.org/r/75ada52f-afa1-08bc-d0ce-966fc1110e70@jaseg.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r--drivers/staging/fbtft/fb_bd663474.c2
-rw-r--r--drivers/staging/fbtft/fb_ili9163.c2
-rw-r--r--drivers/staging/fbtft/fb_ili9325.c2
-rw-r--r--drivers/staging/fbtft/fb_s6d1121.c2
-rw-r--r--drivers/staging/fbtft/fb_ssd1289.c2
-rw-r--r--drivers/staging/fbtft/fb_ssd1331.c4
-rw-r--r--drivers/staging/fbtft/fb_upd161704.c2
-rw-r--r--drivers/staging/fbtft/fbtft-bus.c2
-rw-r--r--drivers/staging/fbtft/fbtft-core.c4
9 files changed, 11 insertions, 11 deletions
diff --git a/drivers/staging/fbtft/fb_bd663474.c b/drivers/staging/fbtft/fb_bd663474.c
index b6c6d66e4eb1..e2c7646588f8 100644
--- a/drivers/staging/fbtft/fb_bd663474.c
+++ b/drivers/staging/fbtft/fb_bd663474.c
@@ -24,7 +24,7 @@
static int init_display(struct fbtft_par *par)
{
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
par->fbtftops.reset(par);
diff --git a/drivers/staging/fbtft/fb_ili9163.c b/drivers/staging/fbtft/fb_ili9163.c
index d609a2b67db9..fd32376700e2 100644
--- a/drivers/staging/fbtft/fb_ili9163.c
+++ b/drivers/staging/fbtft/fb_ili9163.c
@@ -77,7 +77,7 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
write_reg(par, MIPI_DCS_SOFT_RESET); /* software reset */
diff --git a/drivers/staging/fbtft/fb_ili9325.c b/drivers/staging/fbtft/fb_ili9325.c
index b090e7ab6fdd..85e54a10ed72 100644
--- a/drivers/staging/fbtft/fb_ili9325.c
+++ b/drivers/staging/fbtft/fb_ili9325.c
@@ -85,7 +85,7 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
bt &= 0x07;
diff --git a/drivers/staging/fbtft/fb_s6d1121.c b/drivers/staging/fbtft/fb_s6d1121.c
index b3d0701880fe..5a129b1352cc 100644
--- a/drivers/staging/fbtft/fb_s6d1121.c
+++ b/drivers/staging/fbtft/fb_s6d1121.c
@@ -29,7 +29,7 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
/* Initialization sequence from Lib_UTFT */
diff --git a/drivers/staging/fbtft/fb_ssd1289.c b/drivers/staging/fbtft/fb_ssd1289.c
index bbf75f795234..88a5b6925901 100644
--- a/drivers/staging/fbtft/fb_ssd1289.c
+++ b/drivers/staging/fbtft/fb_ssd1289.c
@@ -28,7 +28,7 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
write_reg(par, 0x00, 0x0001);
diff --git a/drivers/staging/fbtft/fb_ssd1331.c b/drivers/staging/fbtft/fb_ssd1331.c
index 4cfe9f8535d0..37622c9462aa 100644
--- a/drivers/staging/fbtft/fb_ssd1331.c
+++ b/drivers/staging/fbtft/fb_ssd1331.c
@@ -81,7 +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)
+ if (par->gpio.dc)
gpiod_set_value(par->gpio.dc, 0);
ret = par->fbtftops.write(par, par->buf, sizeof(u8));
if (ret < 0) {
@@ -104,7 +104,7 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
return;
}
}
- if (!par->gpio.dc)
+ if (par->gpio.dc)
gpiod_set_value(par->gpio.dc, 1);
va_end(args);
}
diff --git a/drivers/staging/fbtft/fb_upd161704.c b/drivers/staging/fbtft/fb_upd161704.c
index 564a38e34440..c77832ae5e5b 100644
--- a/drivers/staging/fbtft/fb_upd161704.c
+++ b/drivers/staging/fbtft/fb_upd161704.c
@@ -26,7 +26,7 @@ static int init_display(struct fbtft_par *par)
{
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
/* Initialization sequence from Lib_UTFT */
diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c
index 2ea814d0dca5..63c65dd67b17 100644
--- a/drivers/staging/fbtft/fbtft-bus.c
+++ b/drivers/staging/fbtft/fbtft-bus.c
@@ -135,7 +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)
+ if (par->gpio.dc)
gpiod_set_value(par->gpio.dc, 1);
/* non buffered write */
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index c3179cc847f8..cf5700a2ea66 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -918,7 +918,7 @@ static int fbtft_init_display_dt(struct fbtft_par *par)
return -EINVAL;
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
while (p) {
@@ -1009,7 +1009,7 @@ int fbtft_init_display(struct fbtft_par *par)
}
par->fbtftops.reset(par);
- if (!par->gpio.cs)
+ if (par->gpio.cs)
gpiod_set_value(par->gpio.cs, 0); /* Activate chip */
i = 0;