mail archive of the barebox mailing list
 help / color / mirror / Atom feed
* [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support
@ 2017-02-28 14:31 Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 1/4] console: replace set_active by open/close Bastian Stender
                   ` (4 more replies)
  0 siblings, 5 replies; 8+ messages in thread
From: Bastian Stender @ 2017-02-28 14:31 UTC (permalink / raw)
  To: barebox; +Cc: Bastian Stender

Changes since last version:

console: replace set_active by open/close
  - use a counter rather than flags
  - inrease counter independent of the presence of the cdev->open() hook

console: expose consoles in devfs
  - test for presence before using flush hook

video: add support for Solomon SSD1307 OLED controller family
  - remove pwm dependency and SSD1307 compatibility
  - use tabs and spaces consistently
  - remove unnecessary 'struct ssd1307fb_par'
  - remove unnecessary xzalloc check
  - bail out if any of the *required* device tree properties are missing
  - replace errno on gpio failure with error string
  - remove obsolete printk include

Bastian Stender (4):
  console: replace set_active by open/close
  console: expose consoles in devfs
  fb: introduce flush for virtual framebuffer
  video: add support for Solomon SSD1307 OLED controller family

 commands/fbtest.c         |   1 +
 common/console.c          |  99 +++++++-
 drivers/video/Kconfig     |   4 +
 drivers/video/Makefile    |   1 +
 drivers/video/fb.c        |  26 +++
 drivers/video/fbconsole.c |  31 ++-
 drivers/video/ssd1307fb.c | 566 ++++++++++++++++++++++++++++++++++++++++++++++
 include/console.h         |  10 +-
 include/fb.h              |   2 +
 net/netconsole.c          |  27 ++-
 10 files changed, 744 insertions(+), 23 deletions(-)
 create mode 100644 drivers/video/ssd1307fb.c

-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH v2 1/4] console: replace set_active by open/close
  2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
@ 2017-02-28 14:31 ` Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 2/4] console: expose consoles in devfs Bastian Stender
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 8+ messages in thread
From: Bastian Stender @ 2017-02-28 14:31 UTC (permalink / raw)
  To: barebox; +Cc: Bastian Stender

Opening and closing consoles should be independent from setting them
active. This way it is possible to open e.g. a framebuffer console and
display text on it without showing stdout/stderr.

Signed-off-by: Bastian Stender <bst@pengutronix.de>
---
 common/console.c          | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 drivers/video/fbconsole.c | 28 ++++++++++++++++++----------
 include/console.h         |  7 ++++++-
 net/netconsole.c          | 27 +++++++++++++++++----------
 4 files changed, 85 insertions(+), 23 deletions(-)

diff --git a/common/console.c b/common/console.c
index 74ccfcfc3e..eccbeed0ca 100644
--- a/common/console.c
+++ b/common/console.c
@@ -59,6 +59,39 @@ static struct kfifo __console_output_fifo;
 static struct kfifo *console_input_fifo = &__console_input_fifo;
 static struct kfifo *console_output_fifo = &__console_output_fifo;
 
+int console_open(struct console_device *cdev)
+{
+	int ret;
+
+	if (cdev->open && !cdev->open_count) {
+		ret = cdev->open(cdev);
+		if (ret)
+			return ret;
+	}
+
+	cdev->open_count++;
+
+	return 0;
+}
+
+int console_close(struct console_device *cdev)
+{
+	int ret;
+
+	if (!cdev->open_count)
+		return -EBADFD;
+
+	cdev->open_count--;
+
+	if (cdev->close && !cdev->open_count) {
+		ret = cdev->close(cdev);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 int console_set_active(struct console_device *cdev, unsigned flag)
 {
 	int ret, i;
@@ -71,8 +104,15 @@ int console_set_active(struct console_device *cdev, unsigned flag)
 	if (!flag && cdev->f_active && cdev->flush)
 		cdev->flush(cdev);
 
-	if (cdev->set_active) {
-		ret = cdev->set_active(cdev, flag);
+	if (flag == cdev->f_active)
+		return 0;
+
+	if (!flag) {
+		ret = console_close(cdev);
+		if (ret)
+			return ret;
+	} else {
+		ret = console_open(cdev);
 		if (ret)
 			return ret;
 	}
@@ -264,6 +304,8 @@ int console_register(struct console_device *newcdev)
 	if (newcdev->putc && !newcdev->puts)
 		newcdev->puts = __console_puts;
 
+	newcdev->open_count = 0;
+
 	dev_add_param(dev, "active", console_active_set, console_active_get, 0);
 
 	if (IS_ENABLED(CONFIG_CONSOLE_ACTIVATE_FIRST)) {
diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c
index 693c21f547..64f7d7364e 100644
--- a/drivers/video/fbconsole.c
+++ b/drivers/video/fbconsole.c
@@ -365,21 +365,13 @@ static int setup_font(struct fbc_priv *priv)
 	return 0;
 }
 
-static int fbc_set_active(struct console_device *cdev, unsigned flags)
+static int fbc_open(struct console_device *cdev)
 {
 	struct fbc_priv *priv = container_of(cdev,
 					struct fbc_priv, cdev);
 	struct fb_info *fb = priv->fb;
 	int ret;
 
-	if (priv->active) {
-		fb_close(priv->sc);
-		priv->active = false;
-	}
-
-	if (!(flags & (CONSOLE_STDOUT | CONSOLE_STDERR)))
-		return 0;
-
 	ret = setup_font(priv);
 	if (ret)
 		return ret;
@@ -400,6 +392,21 @@ static int fbc_set_active(struct console_device *cdev, unsigned flags)
 	return 0;
 }
 
+static int fbc_close(struct console_device *cdev)
+{
+	struct fbc_priv *priv = container_of(cdev,
+					struct fbc_priv, cdev);
+
+	if (priv->active) {
+		fb_close(priv->sc);
+		priv->active = false;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 static int set_font(struct param_d *p, void *vpriv)
 {
 	struct fbc_priv *priv = vpriv;
@@ -434,7 +441,8 @@ int register_fbconsole(struct fb_info *fb)
 	cdev->getc = fbc_getc;
 	cdev->devname = "fbconsole";
 	cdev->devid = DEVICE_ID_DYNAMIC;
-	cdev->set_active = fbc_set_active;
+	cdev->open = fbc_open;
+	cdev->close = fbc_close;
 
 	ret = console_register(cdev);
 	if (ret) {
diff --git a/include/console.h b/include/console.h
index 4b2f134a4c..a1ebc8581b 100644
--- a/include/console.h
+++ b/include/console.h
@@ -44,7 +44,8 @@ struct console_device {
 	int (*setbrg)(struct console_device *cdev, int baudrate);
 	void (*flush)(struct console_device *cdev);
 	int (*set_mode)(struct console_device *cdev, enum console_mode mode);
-	int (*set_active)(struct console_device *cdev, unsigned active);
+	int (*open)(struct console_device *cdev);
+	int (*close)(struct console_device *cdev);
 
 	char *devname;
 	int devid;
@@ -54,6 +55,8 @@ struct console_device {
 	unsigned char f_active;
 	char active[4];
 
+	unsigned int open_count;
+
 	unsigned int baudrate;
 	unsigned int baudrate_param;
 
@@ -75,6 +78,8 @@ extern int barebox_loglevel;
 
 struct console_device *console_get_first_active(void);
 
+int console_open(struct console_device *cdev);
+int console_close(struct console_device *cdev);
 int console_set_active(struct console_device *cdev, unsigned active);
 unsigned console_get_active(struct console_device *cdev);
 int console_set_baudrate(struct console_device *cdev, unsigned baudrate);
diff --git a/net/netconsole.c b/net/netconsole.c
index ce3c418798..ef8b1856b6 100644
--- a/net/netconsole.c
+++ b/net/netconsole.c
@@ -105,19 +105,11 @@ static void nc_putc(struct console_device *cdev, char c)
 	priv->busy = 0;
 }
 
-static int nc_set_active(struct console_device *cdev, unsigned flags)
+static int nc_open(struct console_device *cdev)
 {
 	struct nc_priv *priv = container_of(cdev,
 					struct nc_priv, cdev);
 
-	if (priv->con) {
-		net_unregister(priv->con);
-		priv->con = NULL;
-	}
-
-	if (!flags)
-		return 0;
-
 	if (!priv->port) {
 		pr_err("port not set\n");
 		return -EINVAL;
@@ -142,6 +134,20 @@ static int nc_set_active(struct console_device *cdev, unsigned flags)
 	return 0;
 }
 
+static int nc_close(struct console_device *cdev)
+{
+	struct nc_priv *priv = container_of(cdev,
+					struct nc_priv, cdev);
+
+	if (priv->con) {
+		net_unregister(priv->con);
+		priv->con = NULL;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 static int netconsole_init(void)
 {
 	struct nc_priv *priv;
@@ -155,7 +161,8 @@ static int netconsole_init(void)
 	cdev->getc = nc_getc;
 	cdev->devname = "netconsole";
 	cdev->devid = DEVICE_ID_SINGLE;
-	cdev->set_active = nc_set_active;
+	cdev->open = nc_open;
+	cdev->close = nc_close;
 
 	g_priv = priv;
 
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH v2 2/4] console: expose consoles in devfs
  2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 1/4] console: replace set_active by open/close Bastian Stender
@ 2017-02-28 14:31 ` Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 3/4] fb: introduce flush for virtual framebuffer Bastian Stender
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 8+ messages in thread
From: Bastian Stender @ 2017-02-28 14:31 UTC (permalink / raw)
  To: barebox; +Cc: Bastian Stender

This enables displaying text on e.g. a framebuffer console by issueing

	echo -o /dev/fbconsole0 abc123

Signed-off-by: Bastian Stender <bst@pengutronix.de>
---
 common/console.c  | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/console.h |  3 +++
 2 files changed, 56 insertions(+)

diff --git a/common/console.c b/common/console.c
index eccbeed0ca..668c870ab4 100644
--- a/common/console.c
+++ b/common/console.c
@@ -272,6 +272,40 @@ static int __console_puts(struct console_device *cdev, const char *s)
 	return n;
 }
 
+static int fops_open(struct cdev *cdev, unsigned long flags)
+{
+	struct console_device *priv = cdev->priv;
+
+	return console_open(priv);
+}
+
+static int fops_close(struct cdev *dev)
+{
+	struct console_device *priv = dev->priv;
+
+	return console_close(priv);
+}
+
+static int fops_flush(struct cdev *dev)
+{
+	struct console_device *priv = dev->priv;
+
+	if (priv->flush)
+		priv->flush(priv);
+
+	return 0;
+}
+
+static int fops_write(struct cdev* dev, const void* buf, size_t count,
+		      loff_t offset, ulong flags)
+{
+	struct console_device *priv = dev->priv;
+
+	priv->puts(priv, buf);
+
+	return 0;
+}
+
 int console_register(struct console_device *newcdev)
 {
 	struct device_d *dev = &newcdev->class_dev;
@@ -326,6 +360,25 @@ int console_register(struct console_device *newcdev)
 		console_set_active(newcdev, CONSOLE_STDIN |
 				CONSOLE_STDOUT | CONSOLE_STDERR);
 
+	/* expose console as device in fs */
+	newcdev->devfs.name = basprintf("%s%d", newcdev->class_dev.name,
+					newcdev->class_dev.id);
+	newcdev->devfs.priv = newcdev;
+	newcdev->devfs.dev = dev;
+	newcdev->devfs.ops = &newcdev->fops;
+	newcdev->devfs.flags = DEVFS_IS_CHARACTER_DEV;
+	newcdev->fops.open = fops_open;
+	newcdev->fops.close = fops_close;
+	newcdev->fops.flush = fops_flush;
+	newcdev->fops.write = fops_write;
+
+	ret = devfs_create(&newcdev->devfs);
+
+	if (ret) {
+		pr_err("device creation failed with %s\n", strerror(-ret));
+		return ret;
+	}
+
 	return 0;
 }
 EXPORT_SYMBOL(console_register);
diff --git a/include/console.h b/include/console.h
index a1ebc8581b..126c2e8aa3 100644
--- a/include/console.h
+++ b/include/console.h
@@ -61,6 +61,9 @@ struct console_device {
 	unsigned int baudrate_param;
 
 	const char *linux_console_name;
+
+	struct cdev devfs;
+	struct file_operations fops;
 };
 
 int console_register(struct console_device *cdev);
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH v2 3/4] fb: introduce flush for virtual framebuffer
  2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 1/4] console: replace set_active by open/close Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 2/4] console: expose consoles in devfs Bastian Stender
@ 2017-02-28 14:31 ` Bastian Stender
  2017-02-28 14:31 ` [PATCH v2 4/4] video: add support for Solomon SSD1307 OLED controller family Bastian Stender
  2017-03-01  7:03 ` [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Sascha Hauer
  4 siblings, 0 replies; 8+ messages in thread
From: Bastian Stender @ 2017-02-28 14:31 UTC (permalink / raw)
  To: barebox; +Cc: Bastian Stender

Some drivers need an explicit sync method to flush the virtual
framebuffer to the display. It is called fb_flush().

fb_flush() gets called on fbc_putc, on fb_close and in the pattern cycle
in the fbtest command.

Signed-off-by: Bastian Stender <bst@pengutronix.de>
---
 commands/fbtest.c         |  1 +
 drivers/video/fb.c        | 26 ++++++++++++++++++++++++++
 drivers/video/fbconsole.c |  3 +++
 include/fb.h              |  2 ++
 4 files changed, 32 insertions(+)

diff --git a/commands/fbtest.c b/commands/fbtest.c
index bd0e140d07..ca6ec21991 100644
--- a/commands/fbtest.c
+++ b/commands/fbtest.c
@@ -169,6 +169,7 @@ static int do_fbtest(int argc, char *argv[])
 			pattern = patterns[i++ % ARRAY_SIZE(patterns)].func;
 			pattern(sc, color);
 			gu_screen_blit(sc);
+			fb_flush(sc->info);
 
 			start = get_time_ns();
 			while (!is_timeout(start, 2 * SECOND))
diff --git a/drivers/video/fb.c b/drivers/video/fb.c
index 4d2d3aa650..6b88f2df97 100644
--- a/drivers/video/fb.c
+++ b/drivers/video/fb.c
@@ -31,6 +31,30 @@ static int fb_ioctl(struct cdev* cdev, int req, void *data)
 	return 0;
 }
 
+static int fb_close(struct cdev *cdev)
+{
+	struct fb_info *info = cdev->priv;
+
+	if (info->fbops->fb_flush)
+		info->fbops->fb_flush(info);
+	return 0;
+}
+
+static int fb_op_flush(struct cdev *cdev)
+{
+	struct fb_info *info = cdev->priv;
+
+	if (info->fbops->fb_flush)
+		info->fbops->fb_flush(info);
+	return 0;
+}
+
+void fb_flush(struct fb_info *info)
+{
+	if (info->fbops->fb_flush)
+		info->fbops->fb_flush(info);
+}
+
 static void fb_release_shadowfb(struct fb_info *info)
 {
 	free(info->screen_base_shadow);
@@ -199,6 +223,8 @@ static struct file_operations fb_ops = {
 	.memmap	= generic_memmap_rw,
 	.lseek	= dev_lseek_default,
 	.ioctl	= fb_ioctl,
+	.close  = fb_close,
+	.flush  = fb_op_flush,
 };
 
 static void fb_print_mode(struct fb_videomode *mode)
diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c
index 64f7d7364e..4cf8338ed8 100644
--- a/drivers/video/fbconsole.c
+++ b/drivers/video/fbconsole.c
@@ -292,6 +292,7 @@ static void fbc_putc(struct console_device *cdev, char c)
 {
 	struct fbc_priv *priv = container_of(cdev,
 					struct fbc_priv, cdev);
+	struct fb_info *fb = priv->fb;
 
 	if (priv->in_console)
 		return;
@@ -345,6 +346,8 @@ static void fbc_putc(struct console_device *cdev, char c)
 		break;
 	}
 	priv->in_console = 0;
+
+	fb_flush(fb);
 }
 
 static int setup_font(struct fbc_priv *priv)
diff --git a/include/fb.h b/include/fb.h
index b2a9c7152b..271b939968 100644
--- a/include/fb.h
+++ b/include/fb.h
@@ -86,6 +86,7 @@ struct fb_ops {
 	void (*fb_enable)(struct fb_info *info);
 	void (*fb_disable)(struct fb_info *info);
 	int (*fb_activate_var)(struct fb_info *info);
+	void (*fb_flush)(struct fb_info *info);
 };
 
 /*
@@ -152,6 +153,7 @@ int register_framebuffer(struct fb_info *info);
 
 int fb_enable(struct fb_info *info);
 int fb_disable(struct fb_info *info);
+void fb_flush(struct fb_info *info);
 
 #define FBIOGET_SCREENINFO	_IOR('F', 1, loff_t)
 #define	FBIO_ENABLE		_IO('F', 2)
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH v2 4/4] video: add support for Solomon SSD1307 OLED controller family
  2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
                   ` (2 preceding siblings ...)
  2017-02-28 14:31 ` [PATCH v2 3/4] fb: introduce flush for virtual framebuffer Bastian Stender
@ 2017-02-28 14:31 ` Bastian Stender
  2017-03-03  9:06   ` [PATCH] fixup! " Uwe Kleine-König
  2017-03-01  7:03 ` [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Sascha Hauer
  4 siblings, 1 reply; 8+ messages in thread
From: Bastian Stender @ 2017-02-28 14:31 UTC (permalink / raw)
  To: barebox; +Cc: Bastian Stender

It was ported from linux v4.10. Like the kernel driver only
communication via I2C is supported.

It has only been tested with a SSD1306 and a 96x16 OLED display:

	&i2c0 {
		status = "okay";

		ssd1306: oled@3c {
			compatible = "solomon,ssd1306fb-i2c";
			reg = <0x3c>;
			reset-gpios = <&gpio1 1 0>;
			solomon,height = <16>;
			solomon,width = <96>;
			solomon,page-offset = <0>;
			solomon,com-invdir;
			solomon,com-seq;
		};

Signed-off-by: Bastian Stender <bst@pengutronix.de>
---
 drivers/video/Kconfig     |   4 +
 drivers/video/Makefile    |   1 +
 drivers/video/ssd1307fb.c | 566 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 571 insertions(+)
 create mode 100644 drivers/video/ssd1307fb.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 8f31f5af74..39ed9bde9a 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -12,6 +12,10 @@ config FRAMEBUFFER_CONSOLE
 	select FONTS
 	prompt "framebuffer console support"
 
+config DRIVER_VIDEO_FB_SSD1307
+	bool "Solomon SSD1307 framebuffer support"
+	depends on I2C && GPIOLIB
+
 config VIDEO_VPL
 	depends on OFTREE
 	bool
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 1bf2e1f3ca..e23c9c37b6 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -21,3 +21,4 @@ obj-$(CONFIG_DRIVER_VIDEO_OMAP) += omap.o
 obj-$(CONFIG_DRIVER_VIDEO_BCM283X) += bcm2835.o
 obj-$(CONFIG_DRIVER_VIDEO_SIMPLEFB) += simplefb.o
 obj-$(CONFIG_DRIVER_VIDEO_IMX_IPUV3) += imx-ipu-v3/
+obj-$(CONFIG_DRIVER_VIDEO_FB_SSD1307) += ssd1307fb.o
diff --git a/drivers/video/ssd1307fb.c b/drivers/video/ssd1307fb.c
new file mode 100644
index 0000000000..ff4af2cdf4
--- /dev/null
+++ b/drivers/video/ssd1307fb.c
@@ -0,0 +1,566 @@
+/*
+ * Driver for the Solomon SSD1307 OLED controller family
+ *
+ * Supports:
+ *      - SSD1305 (untested)
+ *      - SSD1306
+ *      - SSD1309 (untested)
+ *
+ * The SSD1307 controller is currently unsupported as the PWM parts were not
+ * ported.
+ *
+ * Copyright 2012 Maxime Ripard <maxime.ripard@free-electrons.com>, Free Electrons
+ *
+ * Ported to barebox from linux v4.10
+ * Copyright (C) 2017 Pengutronix, Bastian Stender <kernel@pengutronix.de>
+ *
+ * Licensed under the GPLv2 or later.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <fb.h>
+#include <i2c/i2c.h>
+#include <of_device.h>
+#include <gpio.h>
+#include <of_gpio.h>
+
+#define SSD1307FB_DATA                          0x40
+#define SSD1307FB_COMMAND                       0x80
+
+#define SSD1307FB_SET_ADDRESS_MODE              0x20
+#define SSD1307FB_SET_ADDRESS_MODE_HORIZONTAL   (0x00)
+#define SSD1307FB_SET_ADDRESS_MODE_VERTICAL     (0x01)
+#define SSD1307FB_SET_ADDRESS_MODE_PAGE         (0x02)
+#define SSD1307FB_SET_COL_RANGE                 0x21
+#define SSD1307FB_SET_PAGE_RANGE                0x22
+#define SSD1307FB_CONTRAST                      0x81
+#define SSD1307FB_CHARGE_PUMP                   0x8d
+#define SSD1307FB_SEG_REMAP_ON                  0xa1
+#define SSD1307FB_DISPLAY_OFF                   0xae
+#define SSD1307FB_SET_MULTIPLEX_RATIO           0xa8
+#define SSD1307FB_DISPLAY_ON                    0xaf
+#define SSD1307FB_START_PAGE_ADDRESS            0xb0
+#define SSD1307FB_SET_DISPLAY_OFFSET            0xd3
+#define SSD1307FB_SET_CLOCK_FREQ                0xd5
+#define SSD1307FB_SET_PRECHARGE_PERIOD          0xd9
+#define SSD1307FB_SET_COM_PINS_CONFIG           0xda
+#define SSD1307FB_SET_VCOMH                     0xdb
+
+struct ssd1307fb_deviceinfo {
+	u32 default_vcomh;
+	u32 default_dclk_div;
+	u32 default_dclk_frq;
+	int need_chargepump;
+};
+
+struct ssd1307fb_par {
+	u32 com_invdir;
+	u32 com_lrremap;
+	u32 com_offset;
+	u32 com_seq;
+	u32 contrast;
+	u32 dclk_div;
+	u32 dclk_frq;
+	const struct ssd1307fb_deviceinfo *device_info;
+	struct i2c_client *client;
+	u32 height;
+	struct fb_info *info;
+	u32 page_offset;
+	u32 prechargep1;
+	u32 prechargep2;
+	int reset;
+	u32 seg_remap;
+	u32 vcomh;
+	u32 width;
+};
+
+struct ssd1307fb_array {
+	u8 type;
+	u8 data[0];
+};
+
+static struct ssd1307fb_array *ssd1307fb_alloc_array(u32 len, u8 type)
+{
+	struct ssd1307fb_array *array;
+
+	array = kzalloc(sizeof(struct ssd1307fb_array) + len, GFP_KERNEL);
+	if (!array)
+		return NULL;
+
+	array->type = type;
+
+	return array;
+}
+
+static int ssd1307fb_write_array(struct i2c_client *client,
+				 struct ssd1307fb_array *array, u32 len)
+{
+	int ret;
+
+	len += sizeof(struct ssd1307fb_array);
+
+	ret = i2c_master_send(client, (u8 *)array, len);
+	if (ret != len) {
+		dev_err(&client->dev, "Couldn't send I2C command.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static inline int ssd1307fb_write_cmd(struct i2c_client *client, u8 cmd)
+{
+	struct ssd1307fb_array *array;
+	int ret;
+
+	array = ssd1307fb_alloc_array(1, SSD1307FB_COMMAND);
+	if (!array)
+		return -ENOMEM;
+
+	array->data[0] = cmd;
+
+	ret = ssd1307fb_write_array(client, array, 1);
+	kfree(array);
+
+	return ret;
+}
+
+static void ssd1307fb_update_display(struct ssd1307fb_par *par)
+{
+	struct ssd1307fb_array *array;
+	u8 *vmem = par->info->screen_base;
+	int i, j, k;
+
+	array = ssd1307fb_alloc_array(par->width * par->height / 8,
+				      SSD1307FB_DATA);
+	if (!array)
+		return;
+
+	/*
+	 * The screen is divided in pages, each having a height of 8
+	 * pixels, and the width of the screen. When sending a byte of
+	 * data to the controller, it gives the 8 bits for the current
+	 * column. I.e, the first byte are the 8 bits of the first
+	 * column, then the 8 bits for the second column, etc.
+	 *
+	 *
+	 * Representation of the screen, assuming it is 5 bits
+	 * wide. Each letter-number combination is a bit that controls
+	 * one pixel.
+	 *
+	 * A0 A1 A2 A3 A4
+	 * B0 B1 B2 B3 B4
+	 * C0 C1 C2 C3 C4
+	 * D0 D1 D2 D3 D4
+	 * E0 E1 E2 E3 E4
+	 * F0 F1 F2 F3 F4
+	 * G0 G1 G2 G3 G4
+	 * H0 H1 H2 H3 H4
+	 *
+	 * If you want to update this screen, you need to send 5 bytes:
+	 *  (1) A0 B0 C0 D0 E0 F0 G0 H0
+	 *  (2) A1 B1 C1 D1 E1 F1 G1 H1
+	 *  (3) A2 B2 C2 D2 E2 F2 G2 H2
+	 *  (4) A3 B3 C3 D3 E3 F3 G3 H3
+	 *  (5) A4 B4 C4 D4 E4 F4 G4 H4
+	 */
+
+	for (i = 0; i < (par->height / 8); i++) {
+		for (j = 0; j < par->width; j++) {
+			u32 array_idx = i * par->width + j;
+			array->data[array_idx] = 0;
+			for (k = 0; k < 8; k++) {
+				u32 page_length = par->width * i * 8;
+				u32 index = page_length + (par->width * k + j);
+				u8 byte = *(vmem + index);
+				/* convert to 1 bit per pixel */
+				u8 bit = byte > 0;
+				array->data[array_idx] |= bit << k;
+			}
+		}
+	}
+
+	ssd1307fb_write_array(par->client, array, par->width * par->height / 8);
+	kfree(array);
+}
+
+static void ssd1307fb_enable(struct fb_info *info)
+{
+	struct ssd1307fb_par *par = info->priv;
+	ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_ON);
+}
+
+static void ssd1307fb_disable(struct fb_info *info)
+{
+	struct ssd1307fb_par *par = info->priv;
+	ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_OFF);
+}
+
+static void ssd1307fb_flush(struct fb_info *info)
+{
+	struct ssd1307fb_par *par = info->priv;
+	ssd1307fb_update_display(par);
+}
+
+static struct fb_ops ssd1307fb_ops = {
+	.fb_enable	= ssd1307fb_enable,
+	.fb_disable	= ssd1307fb_disable,
+	.fb_flush	= ssd1307fb_flush,
+};
+
+static int ssd1307fb_init(struct ssd1307fb_par *par)
+{
+	int ret;
+	u32 precharge, dclk, com_invdir, compins;
+
+	/* Set initial contrast */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_CONTRAST);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, par->contrast);
+	if (ret < 0)
+		return ret;
+
+	/* Set segment re-map */
+	if (par->seg_remap) {
+		ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SEG_REMAP_ON);
+		if (ret < 0)
+			return ret;
+	};
+
+	/* Set COM direction */
+	com_invdir = 0xc0 | (par->com_invdir & 0x1) << 3;
+	ret = ssd1307fb_write_cmd(par->client,  com_invdir);
+	if (ret < 0)
+		return ret;
+
+	/* Set multiplex ratio value */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_MULTIPLEX_RATIO);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, par->height - 1);
+	if (ret < 0)
+		return ret;
+
+	/* set display offset value */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_DISPLAY_OFFSET);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, par->com_offset);
+	if (ret < 0)
+		return ret;
+
+	/* Set clock frequency */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_CLOCK_FREQ);
+	if (ret < 0)
+		return ret;
+
+	dclk = ((par->dclk_div - 1) & 0xf) | (par->dclk_frq & 0xf) << 4;
+	ret = ssd1307fb_write_cmd(par->client, dclk);
+	if (ret < 0)
+		return ret;
+
+	/* Set precharge period in number of ticks from the internal clock */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PRECHARGE_PERIOD);
+	if (ret < 0)
+		return ret;
+
+	precharge = (par->prechargep1 & 0xf) | (par->prechargep2 & 0xf) << 4;
+	ret = ssd1307fb_write_cmd(par->client, precharge);
+	if (ret < 0)
+		return ret;
+
+	/* Set COM pins configuration */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COM_PINS_CONFIG);
+	if (ret < 0)
+		return ret;
+
+	compins = 0x02 | !(par->com_seq & 0x1) << 4
+				   | (par->com_lrremap & 0x1) << 5;
+	ret = ssd1307fb_write_cmd(par->client, compins);
+	if (ret < 0)
+		return ret;
+
+	/* Set VCOMH */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_VCOMH);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, par->vcomh);
+	if (ret < 0)
+		return ret;
+
+	/* Turn on the DC-DC Charge Pump */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_CHARGE_PUMP);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client,
+		BIT(4) | (par->device_info->need_chargepump ? BIT(2) : 0));
+	if (ret < 0)
+		return ret;
+
+	/* Switch to horizontal addressing mode */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_ADDRESS_MODE);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client,
+				  SSD1307FB_SET_ADDRESS_MODE_HORIZONTAL);
+	if (ret < 0)
+		return ret;
+
+	/* Set column range */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COL_RANGE);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, 0x0);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, par->width - 1);
+	if (ret < 0)
+		return ret;
+
+	/* Set page range */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PAGE_RANGE);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client, 0x0);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd1307fb_write_cmd(par->client,
+				  par->page_offset + (par->height / 8) - 1);
+	if (ret < 0)
+		return ret;
+
+	/* Turn on the display */
+	ret = ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_ON);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct ssd1307fb_deviceinfo ssd1307fb_ssd1305_deviceinfo = {
+	.default_vcomh = 0x34,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 7,
+};
+
+static struct ssd1307fb_deviceinfo ssd1307fb_ssd1306_deviceinfo = {
+	.default_vcomh = 0x20,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 8,
+	.need_chargepump = 1,
+};
+
+static struct ssd1307fb_deviceinfo ssd1307fb_ssd1309_deviceinfo = {
+	.default_vcomh = 0x34,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 10,
+};
+
+static const struct of_device_id ssd1307fb_of_match[] = {
+	{
+		.compatible = "solomon,ssd1305fb-i2c",
+		.data = (void *)&ssd1307fb_ssd1305_deviceinfo,
+	},
+	{
+		.compatible = "solomon,ssd1306fb-i2c",
+		.data = (void *)&ssd1307fb_ssd1306_deviceinfo,
+	},
+	{
+		.compatible = "solomon,ssd1309fb-i2c",
+		.data = (void *)&ssd1307fb_ssd1309_deviceinfo,
+	},
+	{},
+};
+
+static int ssd1307fb_probe(struct device_d *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct fb_info *info;
+	struct device_node *node = dev->device_node;
+	const struct of_device_id *match =
+		of_match_node(ssd1307fb_of_match, dev->device_node);
+	u32 vmem_size;
+	struct ssd1307fb_par *par;
+	struct ssd1307fb_array *array;
+	u8 *vmem;
+	int ret;
+	int i, j;
+
+	if (!node) {
+		dev_err(&client->dev, "No device tree data found!\n");
+		return -EINVAL;
+	}
+
+	info = xzalloc(sizeof(struct fb_info));
+
+	par = info->priv;
+	par->info = info;
+	par->client = client;
+
+	par->device_info = (struct ssd1307fb_deviceinfo *)match->data;
+
+	par->reset = of_get_named_gpio(node,
+					 "reset-gpios", 0);
+	if (!gpio_is_valid(par->reset)) {
+		ret = par->reset;
+		dev_err(&client->dev,
+			"Couldn't get named gpio 'reset-gpios': %s.\n",
+			strerror(-ret));
+		goto fb_alloc_error;
+	}
+
+	ret = of_property_read_u32(node, "solomon,width", &par->width);
+	if (ret) {
+		dev_err(&client->dev,
+			"Couldn't find 'solomon,width' in device tree.\n");
+		goto panel_init_error;
+	}
+
+	ret = of_property_read_u32(node, "solomon,height", &par->height);
+	if (ret) {
+		dev_err(&client->dev,
+			"Couldn't find 'solomon,height' in device tree.\n");
+		goto panel_init_error;
+	}
+
+	ret = of_property_read_u32(node, "solomon,page-offset",
+				   &par->page_offset);
+	if (ret) {
+		dev_err(&client->dev,
+			"Couldn't find 'solomon,page_offset' in device tree.\n");
+		goto panel_init_error;
+	}
+
+	if (of_property_read_u32(node, "solomon,com-offset", &par->com_offset))
+		par->com_offset = 0;
+
+	if (of_property_read_u32(node, "solomon,prechargep1",
+				 &par->prechargep1))
+		par->prechargep1 = 2;
+
+	if (of_property_read_u32(node, "solomon,prechargep2",
+				 &par->prechargep2))
+		par->prechargep2 = 2;
+
+	par->seg_remap = !of_property_read_bool(node,
+						"solomon,segment-no-remap");
+	par->com_seq = of_property_read_bool(node, "solomon,com-seq");
+	par->com_lrremap = of_property_read_bool(node, "solomon,com-lrremap");
+	par->com_invdir = of_property_read_bool(node, "solomon,com-invdir");
+
+	par->contrast = 127;
+	par->vcomh = par->device_info->default_vcomh;
+
+	/* Setup display timing */
+	par->dclk_div = par->device_info->default_dclk_div;
+	par->dclk_frq = par->device_info->default_dclk_frq;
+
+	vmem_size = par->width * par->height;
+
+	vmem = malloc(vmem_size);
+	if (!vmem) {
+		dev_err(&client->dev, "Couldn't allocate graphical memory.\n");
+		ret = -ENOMEM;
+		goto fb_alloc_error;
+	}
+
+	info->fbops = &ssd1307fb_ops;
+	info->line_length = par->width;
+
+	info->xres = par->width;
+	info->yres = par->height;
+
+	/* emulate 8 bit per pixel */
+	info->bits_per_pixel = 8;
+
+	info->red.length = 3;
+	info->red.offset = 0;
+	info->green.length = 3;
+	info->green.offset = 0;
+	info->blue.length = 2;
+	info->blue.offset = 0;
+
+	info->screen_base = (u8 __force __iomem *)vmem;
+
+	ret = gpio_request_one(par->reset,
+			       GPIOF_OUT_INIT_HIGH,
+			       "oled-reset");
+	if (ret) {
+		dev_err(&client->dev,
+			"failed to request gpio %d: %d\n",
+			par->reset, ret);
+		goto reset_oled_error;
+	}
+
+	i2c_set_clientdata(client, info);
+
+	/* Reset the screen */
+	gpio_set_value(par->reset, 0);
+	udelay(4);
+	gpio_set_value(par->reset, 1);
+	udelay(4);
+
+	ret = ssd1307fb_init(par);
+	if (ret)
+		goto reset_oled_error;
+
+	ret = register_framebuffer(info);
+	if (ret) {
+		dev_err(&client->dev, "Couldn't register the framebuffer\n");
+		goto panel_init_error;
+	}
+
+	/* clear display */
+	array = ssd1307fb_alloc_array(par->width * par->height / 8,
+				      SSD1307FB_DATA);
+	if (!array)
+		return -ENOMEM;
+
+	for (i = 0; i < (par->height / 8); i++) {
+		for (j = 0; j < par->width; j++) {
+			u32 array_idx = i * par->width + j;
+			array->data[array_idx] = 0;
+		}
+	}
+
+	ssd1307fb_write_array(par->client, array, par->width * par->height / 8);
+	kfree(array);
+
+	dev_info(&client->dev,
+		 "ssd1307 framebuffer device registered, using %d bytes of video memory\n",
+		 vmem_size);
+
+	return 0;
+
+panel_init_error:
+reset_oled_error:
+fb_alloc_error:
+	free(info);
+	return ret;
+}
+
+static struct driver_d ssd1307fb_driver = {
+	.name = "ssd1307fb",
+	.probe = ssd1307fb_probe,
+	.of_compatible = DRV_OF_COMPAT(ssd1307fb_of_match),
+};
+
+static int ssd1307_init(void)
+{
+	i2c_driver_register(&ssd1307fb_driver);
+	return 0;
+}
+
+device_initcall(ssd1307_init);
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support
  2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
                   ` (3 preceding siblings ...)
  2017-02-28 14:31 ` [PATCH v2 4/4] video: add support for Solomon SSD1307 OLED controller family Bastian Stender
@ 2017-03-01  7:03 ` Sascha Hauer
  4 siblings, 0 replies; 8+ messages in thread
From: Sascha Hauer @ 2017-03-01  7:03 UTC (permalink / raw)
  To: Bastian Stender; +Cc: barebox

On Tue, Feb 28, 2017 at 03:31:23PM +0100, Bastian Stender wrote:
> Changes since last version:
> 
> console: replace set_active by open/close
>   - use a counter rather than flags
>   - inrease counter independent of the presence of the cdev->open() hook
> 
> console: expose consoles in devfs
>   - test for presence before using flush hook
> 
> video: add support for Solomon SSD1307 OLED controller family
>   - remove pwm dependency and SSD1307 compatibility
>   - use tabs and spaces consistently
>   - remove unnecessary 'struct ssd1307fb_par'
>   - remove unnecessary xzalloc check
>   - bail out if any of the *required* device tree properties are missing
>   - replace errno on gpio failure with error string
>   - remove obsolete printk include
> 
> Bastian Stender (4):
>   console: replace set_active by open/close
>   console: expose consoles in devfs
>   fb: introduce flush for virtual framebuffer
>   video: add support for Solomon SSD1307 OLED controller family

Applied, thanks

Sascha

> 
>  commands/fbtest.c         |   1 +
>  common/console.c          |  99 +++++++-
>  drivers/video/Kconfig     |   4 +
>  drivers/video/Makefile    |   1 +
>  drivers/video/fb.c        |  26 +++
>  drivers/video/fbconsole.c |  31 ++-
>  drivers/video/ssd1307fb.c | 566 ++++++++++++++++++++++++++++++++++++++++++++++
>  include/console.h         |  10 +-
>  include/fb.h              |   2 +
>  net/netconsole.c          |  27 ++-
>  10 files changed, 744 insertions(+), 23 deletions(-)
>  create mode 100644 drivers/video/ssd1307fb.c
> 
> -- 
> 2.11.0
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH] fixup! video: add support for Solomon SSD1307 OLED controller family
  2017-02-28 14:31 ` [PATCH v2 4/4] video: add support for Solomon SSD1307 OLED controller family Bastian Stender
@ 2017-03-03  9:06   ` Uwe Kleine-König
  2017-03-06  7:10     ` Sascha Hauer
  0 siblings, 1 reply; 8+ messages in thread
From: Uwe Kleine-König @ 2017-03-03  9:06 UTC (permalink / raw)
  To: barebox

---
 drivers/video/ssd1307fb.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/video/ssd1307fb.c b/drivers/video/ssd1307fb.c
index ff4af2cdf493..7437d340ee41 100644
--- a/drivers/video/ssd1307fb.c
+++ b/drivers/video/ssd1307fb.c
@@ -415,9 +415,10 @@ static int ssd1307fb_probe(struct device_d *dev)
 					 "reset-gpios", 0);
 	if (!gpio_is_valid(par->reset)) {
 		ret = par->reset;
-		dev_err(&client->dev,
-			"Couldn't get named gpio 'reset-gpios': %s.\n",
-			strerror(-ret));
+		if (ret != -EPROBE_DEFER)
+			dev_err(&client->dev,
+				"Couldn't get named gpio 'reset-gpios': %s.\n",
+				strerror(-ret));
 		goto fb_alloc_error;
 	}
 
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] fixup! video: add support for Solomon SSD1307 OLED controller family
  2017-03-03  9:06   ` [PATCH] fixup! " Uwe Kleine-König
@ 2017-03-06  7:10     ` Sascha Hauer
  0 siblings, 0 replies; 8+ messages in thread
From: Sascha Hauer @ 2017-03-06  7:10 UTC (permalink / raw)
  To: Uwe Kleine-König; +Cc: barebox

On Fri, Mar 03, 2017 at 10:06:33AM +0100, Uwe Kleine-König wrote:
> ---
>  drivers/video/ssd1307fb.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 

Applied, thanks

Sascha

> diff --git a/drivers/video/ssd1307fb.c b/drivers/video/ssd1307fb.c
> index ff4af2cdf493..7437d340ee41 100644
> --- a/drivers/video/ssd1307fb.c
> +++ b/drivers/video/ssd1307fb.c
> @@ -415,9 +415,10 @@ static int ssd1307fb_probe(struct device_d *dev)
>  					 "reset-gpios", 0);
>  	if (!gpio_is_valid(par->reset)) {
>  		ret = par->reset;
> -		dev_err(&client->dev,
> -			"Couldn't get named gpio 'reset-gpios': %s.\n",
> -			strerror(-ret));
> +		if (ret != -EPROBE_DEFER)
> +			dev_err(&client->dev,
> +				"Couldn't get named gpio 'reset-gpios': %s.\n",
> +				strerror(-ret));
>  		goto fb_alloc_error;
>  	}
>  
> -- 
> 2.11.0
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2017-03-06  7:11 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-02-28 14:31 [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Bastian Stender
2017-02-28 14:31 ` [PATCH v2 1/4] console: replace set_active by open/close Bastian Stender
2017-02-28 14:31 ` [PATCH v2 2/4] console: expose consoles in devfs Bastian Stender
2017-02-28 14:31 ` [PATCH v2 3/4] fb: introduce flush for virtual framebuffer Bastian Stender
2017-02-28 14:31 ` [PATCH v2 4/4] video: add support for Solomon SSD1307 OLED controller family Bastian Stender
2017-03-03  9:06   ` [PATCH] fixup! " Uwe Kleine-König
2017-03-06  7:10     ` Sascha Hauer
2017-03-01  7:03 ` [PATCH v2 0/4] Prepare consoles, add fb flush and Solomon SSD1307 OLED controller support Sascha Hauer

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox