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-rw-r--r--drivers/video/backlight/Kconfig8
-rw-r--r--drivers/video/backlight/Makefile1
-rw-r--r--drivers/video/backlight/ktd253-backlight.c198
-rw-r--r--drivers/video/backlight/sky81452-backlight.c1
-rw-r--r--drivers/video/backlight/tosa_bl.c2
-rw-r--r--drivers/video/backlight/tosa_lcd.c2
-rw-r--r--drivers/video/console/Kconfig46
-rw-r--r--drivers/video/console/newport_con.c29
-rw-r--r--drivers/video/console/sticon.c9
-rw-r--r--drivers/video/console/vgacon.c221
-rw-r--r--drivers/video/fbdev/Kconfig20
-rw-r--r--drivers/video/fbdev/Makefile1
-rw-r--r--drivers/video/fbdev/amba-clcd.c986
-rw-r--r--drivers/video/fbdev/core/bitblit.c11
-rw-r--r--drivers/video/fbdev/core/fbcon.c358
-rw-r--r--drivers/video/fbdev/core/fbcon.h9
-rw-r--r--drivers/video/fbdev/core/fbcon_ccw.c11
-rw-r--r--drivers/video/fbdev/core/fbcon_cw.c11
-rw-r--r--drivers/video/fbdev/core/fbcon_rotate.c1
-rw-r--r--drivers/video/fbdev/core/fbcon_ud.c11
-rw-r--r--drivers/video/fbdev/core/tileblit.c3
21 files changed, 1249 insertions, 690 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 87f9fc238d28..d83c87b902c1 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -182,6 +182,14 @@ config BACKLIGHT_IPAQ_MICRO
computers. Say yes if you have one of the h3100/h3600/h3700
machines.
+config BACKLIGHT_KTD253
+ tristate "Backlight Driver for Kinetic KTD253"
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ Say y to enabled the backlight driver for the Kinetic KTD253
+ which is a 1-wire GPIO-controlled backlight found in some mobile
+ phones.
+
config BACKLIGHT_LM3533
tristate "Backlight Driver for LM3533"
depends on MFD_LM3533
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 13463b99f1f9..685f3f1ca4df 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_BACKLIGHT_GPIO) += gpio_backlight.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o
obj-$(CONFIG_BACKLIGHT_IPAQ_MICRO) += ipaq_micro_bl.o
+obj-$(CONFIG_BACKLIGHT_KTD253) += ktd253-backlight.o
obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o
obj-$(CONFIG_BACKLIGHT_LM3630A) += lm3630a_bl.o
obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o
diff --git a/drivers/video/backlight/ktd253-backlight.c b/drivers/video/backlight/ktd253-backlight.c
new file mode 100644
index 000000000000..e3fee3f1f582
--- /dev/null
+++ b/drivers/video/backlight/ktd253-backlight.c
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Backlight driver for the Kinetic KTD253
+ * Based on code and know-how from the Samsung GT-S7710
+ * Gareth Phillips <gareth.phillips@samsung.com>
+ */
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+
+/* Current ratio is n/32 from 1/32 to 32/32 */
+#define KTD253_MIN_RATIO 1
+#define KTD253_MAX_RATIO 32
+#define KTD253_DEFAULT_RATIO 13
+
+#define KTD253_T_LOW_NS (200 + 10) /* Additional 10ns as safety factor */
+#define KTD253_T_HIGH_NS (200 + 10) /* Additional 10ns as safety factor */
+#define KTD253_T_OFF_MS 3
+
+struct ktd253_backlight {
+ struct device *dev;
+ struct backlight_device *bl;
+ struct gpio_desc *gpiod;
+ u16 ratio;
+};
+
+static int ktd253_backlight_update_status(struct backlight_device *bl)
+{
+ struct ktd253_backlight *ktd253 = bl_get_data(bl);
+ int brightness = backlight_get_brightness(bl);
+ u16 target_ratio;
+ u16 current_ratio = ktd253->ratio;
+ unsigned long flags;
+
+ dev_dbg(ktd253->dev, "new brightness/ratio: %d/32\n", brightness);
+
+ target_ratio = brightness;
+
+ if (target_ratio == current_ratio)
+ /* This is already right */
+ return 0;
+
+ if (target_ratio == 0) {
+ gpiod_set_value_cansleep(ktd253->gpiod, 0);
+ /*
+ * We need to keep the GPIO low for at least this long
+ * to actually switch the KTD253 off.
+ */
+ msleep(KTD253_T_OFF_MS);
+ ktd253->ratio = 0;
+ return 0;
+ }
+
+ if (current_ratio == 0) {
+ gpiod_set_value_cansleep(ktd253->gpiod, 1);
+ ndelay(KTD253_T_HIGH_NS);
+ /* We always fall back to this when we power on */
+ current_ratio = KTD253_MAX_RATIO;
+ }
+
+ /*
+ * WARNING:
+ * The loop to set the correct current level is performed
+ * with interrupts disabled as it is timing critical.
+ * The maximum number of cycles of the loop is 32
+ * so the time taken will be (T_LOW_NS + T_HIGH_NS + loop_time) * 32,
+ */
+ local_irq_save(flags);
+ while (current_ratio != target_ratio) {
+ /*
+ * These GPIO operations absolutely can NOT sleep so no
+ * _cansleep suffixes, and no using GPIO expanders on
+ * slow buses for this!
+ */
+ gpiod_set_value(ktd253->gpiod, 0);
+ ndelay(KTD253_T_LOW_NS);
+ gpiod_set_value(ktd253->gpiod, 1);
+ ndelay(KTD253_T_HIGH_NS);
+ /* After 1/32 we loop back to 32/32 */
+ if (current_ratio == KTD253_MIN_RATIO)
+ current_ratio = KTD253_MAX_RATIO;
+ else
+ current_ratio--;
+ }
+ local_irq_restore(flags);
+ ktd253->ratio = current_ratio;
+
+ dev_dbg(ktd253->dev, "new ratio set to %d/32\n", target_ratio);
+
+ return 0;
+}
+
+static const struct backlight_ops ktd253_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = ktd253_backlight_update_status,
+};
+
+static int ktd253_backlight_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct backlight_device *bl;
+ struct ktd253_backlight *ktd253;
+ u32 max_brightness;
+ u32 brightness;
+ int ret;
+
+ ktd253 = devm_kzalloc(dev, sizeof(*ktd253), GFP_KERNEL);
+ if (!ktd253)
+ return -ENOMEM;
+ ktd253->dev = dev;
+
+ ret = device_property_read_u32(dev, "max-brightness", &max_brightness);
+ if (ret)
+ max_brightness = KTD253_MAX_RATIO;
+ if (max_brightness > KTD253_MAX_RATIO) {
+ /* Clamp brightness to hardware max */
+ dev_err(dev, "illegal max brightness specified\n");
+ max_brightness = KTD253_MAX_RATIO;
+ }
+
+ ret = device_property_read_u32(dev, "default-brightness", &brightness);
+ if (ret)
+ brightness = KTD253_DEFAULT_RATIO;
+ if (brightness > max_brightness) {
+ /* Clamp default brightness to max brightness */
+ dev_err(dev, "default brightness exceeds max brightness\n");
+ brightness = max_brightness;
+ }
+
+ if (brightness)
+ /* This will be the default ratio when the KTD253 is enabled */
+ ktd253->ratio = KTD253_MAX_RATIO;
+ else
+ ktd253->ratio = 0;
+
+ ktd253->gpiod = devm_gpiod_get(dev, "enable",
+ brightness ? GPIOD_OUT_HIGH :
+ GPIOD_OUT_LOW);
+ if (IS_ERR(ktd253->gpiod)) {
+ ret = PTR_ERR(ktd253->gpiod);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "gpio line missing or invalid.\n");
+ return ret;
+ }
+ gpiod_set_consumer_name(ktd253->gpiod, dev_name(dev));
+
+ bl = devm_backlight_device_register(dev, dev_name(dev), dev, ktd253,
+ &ktd253_backlight_ops, NULL);
+ if (IS_ERR(bl)) {
+ dev_err(dev, "failed to register backlight\n");
+ return PTR_ERR(bl);
+ }
+ bl->props.max_brightness = max_brightness;
+ /* When we just enable the GPIO line we set max brightness */
+ if (brightness) {
+ bl->props.brightness = brightness;
+ bl->props.power = FB_BLANK_UNBLANK;
+ } else {
+ bl->props.brightness = 0;
+ bl->props.power = FB_BLANK_POWERDOWN;
+ }
+
+ ktd253->bl = bl;
+ platform_set_drvdata(pdev, bl);
+ backlight_update_status(bl);
+
+ return 0;
+}
+
+static const struct of_device_id ktd253_backlight_of_match[] = {
+ { .compatible = "kinetic,ktd253" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ktd253_backlight_of_match);
+
+static struct platform_driver ktd253_backlight_driver = {
+ .driver = {
+ .name = "ktd253-backlight",
+ .of_match_table = ktd253_backlight_of_match,
+ },
+ .probe = ktd253_backlight_probe,
+};
+module_platform_driver(ktd253_backlight_driver);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_DESCRIPTION("Kinetic KTD253 Backlight Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ktd253-backlight");
diff --git a/drivers/video/backlight/sky81452-backlight.c b/drivers/video/backlight/sky81452-backlight.c
index 0ce181585008..8268ac43d54f 100644
--- a/drivers/video/backlight/sky81452-backlight.c
+++ b/drivers/video/backlight/sky81452-backlight.c
@@ -217,6 +217,7 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
num_entry);
if (ret < 0) {
dev_err(dev, "led-sources node is invalid.\n");
+ of_node_put(np);
return ERR_PTR(-EINVAL);
}
diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index cff5e96fd988..6df6fcd132e3 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -11,7 +11,7 @@
#include <linux/device.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/slab.h>
diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c
index 113116d3585c..38765544345b 100644
--- a/drivers/video/backlight/tosa_lcd.c
+++ b/drivers/video/backlight/tosa_lcd.c
@@ -12,7 +12,7 @@
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/slab.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/lcd.h>
#include <linux/fb.h>
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 5e850cc9f891..39deb22a4180 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -22,52 +22,6 @@ config VGA_CONSOLE
Say Y.
-config VGACON_SOFT_SCROLLBACK
- bool "Enable Scrollback Buffer in System RAM"
- depends on VGA_CONSOLE
- default n
- help
- The scrollback buffer of the standard VGA console is located in
- the VGA RAM. The size of this RAM is fixed and is quite small.
- If you require a larger scrollback buffer, this can be placed in
- System RAM which is dynamically allocated during initialization.
- Placing the scrollback buffer in System RAM will slightly slow
- down the console.
-
- If you want this feature, say 'Y' here and enter the amount of
- RAM to allocate for this buffer. If unsure, say 'N'.
-
-config VGACON_SOFT_SCROLLBACK_SIZE
- int "Scrollback Buffer Size (in KB)"
- depends on VGACON_SOFT_SCROLLBACK
- range 1 1024
- default "64"
- help
- Enter the amount of System RAM to allocate for scrollback
- buffers of VGA consoles. Each 64KB will give you approximately
- 16 80x25 screenfuls of scrollback buffer.
-
-config VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT
- bool "Persistent Scrollback History for each console by default"
- depends on VGACON_SOFT_SCROLLBACK
- default n
- help
- Say Y here if the scrollback history should persist by default when
- switching between consoles. Otherwise, the scrollback history will be
- flushed each time the console is switched. This feature can also be
- enabled using the boot command line parameter
- 'vgacon.scrollback_persistent=1'.
-
- This feature might break your tool of choice to flush the scrollback
- buffer, e.g. clear(1) will work fine but Debian's clear_console(1)
- will be broken, which might cause security issues.
- You can use the escape sequence \e[3J instead if this feature is
- activated.
-
- Note that a buffer of VGACON_SOFT_SCROLLBACK_SIZE is taken for each
- created tty device.
- So if you use a RAM-constrained system, say N here.
-
config MDA_CONSOLE
depends on !M68K && !PARISC && ISA
tristate "MDA text console (dual-headed)"
diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
index 72f146d047d9..d9c682ae0392 100644
--- a/drivers/video/console/newport_con.c
+++ b/drivers/video/console/newport_con.c
@@ -35,12 +35,6 @@
#define FONT_DATA ((unsigned char *)font_vga_8x16.data)
-/* borrowed from fbcon.c */
-#define REFCOUNT(fd) (((int *)(fd))[-1])
-#define FNTSIZE(fd) (((int *)(fd))[-2])
-#define FNTCHARCNT(fd) (((int *)(fd))[-3])
-#define FONT_EXTRA_WORDS 3
-
static unsigned char *font_data[MAX_NR_CONSOLES];
static struct newport_regs *npregs;
@@ -131,6 +125,8 @@ static const struct linux_logo *newport_show_logo(void)
npregs->go.hostrw0 = *data++ << 24;
return logo;
+#else
+ return NULL;
#endif /* CONFIG_LOGO_SGI_CLUT224 */
}
@@ -522,6 +518,7 @@ static int newport_set_font(int unit, struct console_font *op)
FNTSIZE(new_data) = size;
FNTCHARCNT(new_data) = op->charcount;
REFCOUNT(new_data) = 0; /* usage counter */
+ FNTSUM(new_data) = 0;
p = new_data;
for (i = 0; i < op->charcount; i++) {
@@ -676,11 +673,6 @@ static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
return true;
}
-static int newport_set_origin(struct vc_data *vc)
-{
- return 0;
-}
-
static void newport_save_screen(struct vc_data *vc) { }
const struct consw newport_con = {
@@ -697,7 +689,6 @@ const struct consw newport_con = {
.con_blank = newport_blank,
.con_font_set = newport_font_set,
.con_font_default = newport_font_default,
- .con_set_origin = newport_set_origin,
.con_save_screen = newport_save_screen
};
@@ -749,18 +740,6 @@ static struct gio_driver newport_driver = {
.probe = newport_probe,
.remove = newport_remove,
};
-
-int __init newport_console_init(void)
-{
- return gio_register_driver(&newport_driver);
-}
-
-void __exit newport_console_exit(void)
-{
- gio_unregister_driver(&newport_driver);
-}
-
-module_init(newport_console_init);
-module_exit(newport_console_exit);
+module_driver(newport_driver, gio_register_driver, gio_unregister_driver);
MODULE_LICENSE("GPL");
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
index 21a5c280c8c9..e7fd995d3aea 100644
--- a/drivers/video/console/sticon.c
+++ b/drivers/video/console/sticon.c
@@ -217,11 +217,6 @@ static int sticon_switch(struct vc_data *conp)
return 1; /* needs refreshing */
}
-static int sticon_set_origin(struct vc_data *conp)
-{
- return 0;
-}
-
static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
{
if (blank == 0) {
@@ -229,14 +224,13 @@ static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
vga_is_gfx = 0;
return 1;
}
- sticon_set_origin(c);
sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
if (mode_switch)
vga_is_gfx = 1;
return 1;
}
-static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
+static u16 *sticon_screen_pos(const struct vc_data *conp, int offset)
{
int line;
unsigned long p;
@@ -334,7 +328,6 @@ static const struct consw sti_con = {
.con_scroll = sticon_scroll,
.con_switch = sticon_switch,
.con_blank = sticon_blank,
- .con_set_origin = sticon_set_origin,
.con_save_screen = sticon_save_screen,
.con_build_attr = sticon_build_attr,
.con_invert_region = sticon_invert_region,
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index a52bb3740073..17876f0179b5 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -165,214 +165,6 @@ static inline void vga_set_mem_top(struct vc_data *c)
write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2);
}
-#ifdef CONFIG_VGACON_SOFT_SCROLLBACK
-/* software scrollback */
-struct vgacon_scrollback_info {
- void *data;
- int tail;
- int size;
- int rows;
- int cnt;
- int cur;
- int save;
- int restore;
-};
-
-static struct vgacon_scrollback_info *vgacon_scrollback_cur;
-static struct vgacon_scrollback_info vgacon_scrollbacks[MAX_NR_CONSOLES];
-static bool scrollback_persistent = \
- IS_ENABLED(CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT);
-module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
-MODULE_PARM_DESC(scrollback_persistent, "Enable persistent scrollback for all vga consoles");
-
-static void vgacon_scrollback_reset(int vc_num, size_t reset_size)
-{
- struct vgacon_scrollback_info *scrollback = &vgacon_scrollbacks[vc_num];
-
- if (scrollback->data && reset_size > 0)
- memset(scrollback->data, 0, reset_size);
-
- scrollback->cnt = 0;
- scrollback->tail = 0;
- scrollback->cur = 0;
-}
-
-static void vgacon_scrollback_init(int vc_num)
-{
- int pitch = vga_video_num_columns * 2;
- size_t size = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024;
- int rows = size / pitch;
- void *data;
-
- data = kmalloc_array(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE, 1024,
- GFP_NOWAIT);
-
- vgacon_scrollbacks[vc_num].data = data;
- vgacon_scrollback_cur = &vgacon_scrollbacks[vc_num];
-
- vgacon_scrollback_cur->rows = rows - 1;
- vgacon_scrollback_cur->size = rows * pitch;
-
- vgacon_scrollback_reset(vc_num, size);
-}
-
-static void vgacon_scrollback_switch(int vc_num)
-{
- if (!scrollback_persistent)
- vc_num = 0;
-
- if (!vgacon_scrollbacks[vc_num].data) {
- vgacon_scrollback_init(vc_num);
- } else {
- if (scrollback_persistent) {
- vgacon_scrollback_cur = &vgacon_scrollbacks[vc_num];
- } else {
- size_t size = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024;
-
- vgacon_scrollback_reset(vc_num, size);
- }
- }
-}
-
-static void vgacon_scrollback_startup(void)
-{
- vgacon_scrollback_cur = &vgacon_scrollbacks[0];
- vgacon_scrollback_init(0);
-}
-
-static void vgacon_scrollback_update(struct vc_data *c, int t, int count)
-{
- void *p;
-
- if (!vgacon_scrollback_cur->data || !vgacon_scrollback_cur->size ||
- c->vc_num != fg_console)
- return;
-
- p = (void *) (c->vc_origin + t * c->vc_size_row);
-
- while (count--) {
- if ((vgacon_scrollback_cur->tail + c->vc_size_row) >
- vgacon_scrollback_cur->size)
- vgacon_scrollback_cur->tail = 0;
-
- scr_memcpyw(vgacon_scrollback_cur->data +
- vgacon_scrollback_cur->tail,
- p, c->vc_size_row);
-
- vgacon_scrollback_cur->cnt++;
- p += c->vc_size_row;
- vgacon_scrollback_cur->tail += c->vc_size_row;
-
- if (vgacon_scrollback_cur->tail >= vgacon_scrollback_cur->size)
- vgacon_scrollback_cur->tail = 0;
-
- if (vgacon_scrollback_cur->cnt > vgacon_scrollback_cur->rows)
- vgacon_scrollback_cur->cnt = vgacon_scrollback_cur->rows;
-
- vgacon_scrollback_cur->cur = vgacon_scrollback_cur->cnt;
- }
-}
-
-static void vgacon_restore_screen(struct vc_data *c)
-{
- c->vc_origin = c->vc_visible_origin;
- vgacon_scrollback_cur->save = 0;
-
- if (!vga_is_gfx && !vgacon_scrollback_cur->restore) {
- scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf,
- c->vc_screenbuf_size > vga_vram_size ?
- vga_vram_size : c->vc_screenbuf_size);
- vgacon_scrollback_cur->restore = 1;
- vgacon_scrollback_cur->cur = vgacon_scrollback_cur->cnt;
- }
-}
-
-static void vgacon_scrolldelta(struct vc_data *c, int lines)
-{
- int start, end, count, soff;
-
- if (!lines) {
- vgacon_restore_screen(c);
- return;
- }
-
- if (!vgacon_scrollback_cur->data)
- return;
-
- if (!vgacon_scrollback_cur->save) {
- vgacon_cursor(c, CM_ERASE);
- vgacon_save_screen(c);
- c->vc_origin = (unsigned long)c->vc_screenbuf;
- vgacon_scrollback_cur->save = 1;
- }
-
- vgacon_scrollback_cur->restore = 0;
- start = vgacon_scrollback_cur->cur + lines;
- end = start + abs(lines);
-
- if (start < 0)
- start = 0;
-
- if (start > vgacon_scrollback_cur->cnt)
- start = vgacon_scrollback_cur->cnt;
-
- if (end < 0)
- end = 0;
-
- if (end > vgacon_scrollback_cur->cnt)
- end = vgacon_scrollback_cur->cnt;
-
- vgacon_scrollback_cur->cur = start;
- count = end - start;
- soff = vgacon_scrollback_cur->tail -
- ((vgacon_scrollback_cur->cnt - end) * c->vc_size_row);
- soff -= count * c->vc_size_row;
-
- if (soff < 0)
- soff += vgacon_scrollback_cur->size;
-
- count = vgacon_scrollback_cur->cnt - start;
-
- if (count > c->vc_rows)
- count = c->vc_rows;
-
- if (count) {
- int copysize;
-
- int diff = c->vc_rows - count;
- void *d = (void *) c->vc_visible_origin;
- void *s = (void *) c->vc_screenbuf;
-
- count *= c->vc_size_row;
- /* how much memory to end of buffer left? */
- copysize = min(count, vgacon_scrollback_cur->size - soff);
- scr_memcpyw(d, vgacon_scrollback_cur->data + soff, copysize);
- d += copysize;
- count -= copysize;
-
- if (count) {
- scr_memcpyw(d, vgacon_scrollback_cur->data, count);
- d += count;
- }
-
- if (diff)
- scr_memcpyw(d, s, diff * c->vc_size_row);
- } else
- vgacon_cursor(c, CM_MOVE);
-}
-
-static void vgacon_flush_scrollback(struct vc_data *c)
-{
- size_t size = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024;
-
- vgacon_scrollback_reset(c->vc_num, size);
-}
-#else
-#define vgacon_scrollback_startup(...) do { } while (0)
-#define vgacon_scrollback_init(...) do { } while (0)
-#define vgacon_scrollback_update(...) do { } while (0)
-#define vgacon_scrollback_switch(...) do { } while (0)
-
static void vgacon_restore_screen(struct vc_data *c)
{
if (c->vc_origin != c->vc_visible_origin)
@@ -386,11 +178,6 @@ static void vgacon_scrolldelta(struct vc_data *c, int lines)
vga_set_mem_top(c);
}
-static void vgacon_flush_scrollback(struct vc_data *c)
-{
-}
-#endif /* CONFIG_VGACON_SOFT_SCROLLBACK */
-
static const char *vgacon_startup(void)
{
const char *display_desc = NULL;
@@ -573,10 +360,7 @@ static const char *vgacon_startup(void)
vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH;
vgacon_yres = vga_scan_lines;
- if (!vga_init_done) {
- vgacon_scrollback_startup();
- vga_init_done = true;
- }
+ vga_init_done = true;
return display_desc;
}
@@ -869,7 +653,6 @@ static int vgacon_switch(struct vc_data *c)
vgacon_doresize(c, c->vc_cols, c->vc_rows);
}
- vgacon_scrollback_switch(c->vc_num);
return 0; /* Redrawing not needed */
}
@@ -1386,7 +1169,6 @@ static bool vgacon_scroll(struct vc_data *c, unsigned int t, unsigned int b,
oldo = c->vc_origin;
delta = lines * c->vc_size_row;
if (dir == SM_UP) {
- vgacon_scrollback_update(c, t, lines);
if (c->vc_scr_end + delta >= vga_vram_end) {
scr_memcpyw((u16 *) vga_vram_base,
(u16 *) (oldo + delta),
@@ -1450,7 +1232,6 @@ const struct consw vga_con = {
.con_save_screen = vgacon_save_screen,
.con_build_attr = vgacon_build_attr,
.con_invert_region = vgacon_invert_region,
- .con_flush_scrollback = vgacon_flush_scrollback,
};
EXPORT_SYMBOL(vga_con);
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index b2c9dd4f0cb5..402e85450bb5 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -272,6 +272,26 @@ config FB_PM2_FIFO_DISCONNECT
help
Support the Permedia2 FIFO disconnect feature.
+config FB_ARMCLCD
+ tristate "ARM PrimeCell PL110 support"
+ depends on ARM || ARM64 || COMPILE_TEST
+ depends on FB && ARM_AMBA && HAS_IOMEM
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ select FB_MODE_HELPERS if OF
+ select VIDEOMODE_HELPERS if OF
+ select BACKLIGHT_CLASS_DEVICE if OF
+ help
+ This framebuffer device driver is for the ARM PrimeCell PL110
+ Colour LCD controller. ARM PrimeCells provide the building
+ blocks for System on a Chip devices.
+
+ If you want to compile this as a module (=code which can be
+ inserted into and removed from the running kernel), say M
+ here and read <file:Documentation/kbuild/modules.rst>. The module
+ will be called amba-clcd.
+
config FB_ACORN
bool "Acorn VIDC support"
depends on (FB = y) && ARM && ARCH_ACORN
diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile
index cad4fb64442a..a0705b99e643 100644
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_FB_HIT) += hitfb.o
obj-$(CONFIG_FB_ATMEL) += atmel_lcdfb.o
obj-$(CONFIG_FB_PVR2) += pvr2fb.o
obj-$(CONFIG_FB_VOODOO1) += sstfb.o
+obj-$(CONFIG_FB_ARMCLCD) += amba-clcd.o
obj-$(CONFIG_FB_GOLDFISH) += goldfishfb.o
obj-$(CONFIG_FB_68328) += 68328fb.o
obj-$(CONFIG_FB_GBE) += gbefb.o
diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c
new file mode 100644
index 000000000000..b7682de412d8
--- /dev/null
+++ b/drivers/video/fbdev/amba-clcd.c
@@ -0,0 +1,986 @@
+/*
+ * linux/drivers/video/amba-clcd.c
+ *
+ * Copyright (C) 2001 ARM Limited, by David A Rusling
+ * Updated to 2.5, Deep Blue Solutions Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * ARM PrimeCell PL110 Color LCD Controller
+ */
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/backlight.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_graph.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <video/display_timing.h>
+#include <video/of_display_timing.h>
+#include <video/videomode.h>
+
+#define to_clcd(info) container_of(info, struct clcd_fb, fb)
+
+/* This is limited to 16 characters when displayed by X startup */
+static const char *clcd_name = "CLCD FB";
+
+/*
+ * Unfortunately, the enable/disable functions may be called either from
+ * process or IRQ context, and we _need_ to delay. This is _not_ good.
+ */
+static inline void clcdfb_sleep(unsigned int ms)
+{
+ if (in_atomic()) {
+ mdelay(ms);
+ } else {
+ msleep(ms);
+ }
+}
+
+static inline void clcdfb_set_start(struct clcd_fb *fb)
+{
+ unsigned long ustart = fb->fb.fix.smem_start;
+ unsigned long lstart;
+
+ ustart += fb->fb.var.yoffset * fb->fb.fix.line_length;
+ lstart = ustart + fb->fb.var.yres * fb->fb.fix.line_length / 2;
+
+ writel(ustart, fb->regs + CLCD_UBAS);
+ writel(lstart, fb->regs + CLCD_LBAS);
+}
+
+static void clcdfb_disable(struct clcd_fb *fb)
+{
+ u32 val;
+
+ if (fb->board->disable)
+ fb->board->disable(fb);
+
+ if (fb->panel->backlight) {
+ fb->panel->backlight->props.power = FB_BLANK_POWERDOWN;
+ backlight_update_status(fb->panel->backlight);
+ }
+
+ val = readl(fb->regs + fb->off_cntl);
+ if (val & CNTL_LCDPWR) {
+ val &= ~CNTL_LCDPWR;
+ writel(val, fb->regs + fb->off_cntl);
+
+ clcdfb_sleep(20);
+ }
+ if (val & CNTL_LCDEN) {
+ val &= ~CNTL_LCDEN;
+ writel(val, fb->regs + fb->off_cntl);
+ }
+
+ /*
+ * Disable CLCD clock source.
+ */
+ if (fb->clk_enabled) {
+ fb->clk_enabled = false;
+ clk_disable(fb->clk);
+ }
+}
+
+static void clcdfb_enable(struct clcd_fb *fb, u32 cntl)
+{
+ /*
+ * Enable the CLCD clock source.
+ */
+ if (!fb->clk_enabled) {
+ fb->clk_enabled = true;
+ clk_enable(fb->clk);
+ }
+
+ /*
+ * Bring up by first enabling..
+ */
+ cntl |= CNTL_LCDEN;
+ writel(cntl, fb->regs + fb->off_cntl);
+
+ clcdfb_sleep(20);
+
+ /*
+ * and now apply power.
+ */
+ cntl |= CNTL_LCDPWR;
+ writel(cntl, fb->regs + fb->off_cntl);
+
+ /*
+ * Turn on backlight
+ */
+ if (fb->panel->backlight) {
+ fb->panel->backlight->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(fb->panel->backlight);
+ }
+
+ /*
+ * finally, enable the interface.
+ */
+ if (fb->board->enable)
+ fb->board->enable(fb);
+}
+
+static int
+clcdfb_set_bitfields(struct clcd_fb *fb, struct fb_var_screeninfo *var)
+{
+ u32 caps;
+ int ret = 0;
+
+ if (fb->panel->caps && fb->board->caps)
+ caps = fb->panel->caps & fb->board->caps;
+ else {
+ /* Old way of specifying what can be used */
+ caps = fb->panel->cntl & CNTL_BGR ?
+ CLCD_CAP_BGR : CLCD_CAP_RGB;
+ /* But mask out 444 modes as they weren't supported */
+ caps &= ~CLCD_CAP_444;
+ }
+
+ /* Only TFT panels can do RGB888/BGR888 */
+ if (!(fb->panel->cntl & CNTL_LCDTFT))
+ caps &= ~CLCD_CAP_888;
+
+ memset(&var->transp, 0, sizeof(var->transp));
+
+ var->red.msb_right = 0;
+ var->green.msb_right = 0;
+ var->blue.msb_right = 0;
+
+ switch (var->bits_per_pixel) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ /* If we can't do 5551, reject */
+ caps &= CLCD_CAP_5551;
+ if (!caps) {
+ ret = -EINVAL;
+ break;
+ }
+
+ var->red.length = var->bits_per_pixel;
+ var->red.offset = 0;
+ var->green.length = var->bits_per_pixel;
+ var->green.offset = 0;
+ var->blue.length = var->bits_per_pixel;
+ var->blue.offset = 0;
+ break;
+
+ case 16:
+ /* If we can't do 444, 5551 or 565, reject */
+ if (!(caps & (CLCD_CAP_444 | CLCD_CAP_5551 | CLCD_CAP_565))) {
+ ret = -EINVAL;
+ break;
+ }
+
+ /*
+ * Green length can be 4, 5 or 6 depending whether
+ * we're operating in 444, 5551 or 565 mode.
+ */
+ if (var->green.length == 4 && caps & CLCD_CAP_444)
+ caps &= CLCD_CAP_444;
+ if (var->green.length == 5 && caps & CLCD_CAP_5551)
+ caps &= CLCD_CAP_5551;
+ else if (var->green.length == 6 && caps & CLCD_CAP_565)
+ caps &= CLCD_CAP_565;
+ else {
+ /*
+ * PL110 officially only supports RGB555,
+ * but may be wired up to allow RGB565.
+ */
+ if (caps & CLCD_CAP_565) {
+ var->green.length = 6;
+ caps &= CLCD_CAP_565;
+ } else if (caps & CLCD_CAP_5551) {
+ var->green.length = 5;
+ caps &= CLCD_CAP_5551;
+ } else {
+ var->green.length = 4;
+ caps &= CLCD_CAP_444;
+ }
+ }
+
+ if (var->green.length >= 5) {
+ var->red.length = 5;
+ var->blue.length = 5;
+ } else {
+ var->red.length = 4;
+ var->blue.length = 4;
+ }
+ break;
+ case 32:
+ /* If we can't do 888, reject */
+ caps &= CLCD_CAP_888;
+ if (!caps) {
+ ret = -EINVAL;
+ break;
+ }
+
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ /*
+ * >= 16bpp displays have separate colour component bitfields
+ * encoded in the pixel data. Calculate their position from
+ * the bitfield length defined above.
+ */
+ if (ret == 0 && var->bits_per_pixel >= 16) {
+ bool bgr, rgb;
+
+ bgr = caps & CLCD_CAP_BGR && var->blue.offset == 0;
+ rgb = caps & CLCD_CAP_RGB && var->red.offset == 0;
+
+ if (!bgr && !rgb)
+ /*
+ * The requested format was not possible, try just
+ * our capabilities. One of BGR or RGB must be
+ * supported.
+ */
+ bgr = caps & CLCD_CAP_BGR;
+
+ if (bgr) {
+ var->blue.offset = 0;
+ var->green.offset = var->blue.offset + var->blue.length;
+ var->red.offset = var->green.offset + var->green.length;
+ } else {
+ var->red.offset = 0;
+ var->green.offset = var->red.offset + var->red.length;
+ var->blue.offset = var->green.offset + var->green.length;
+ }
+ }
+
+ return ret;
+}
+
+static int clcdfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct clcd_fb *fb = to_clcd(info);
+ int ret = -EINVAL;
+
+ if (fb->board->check)
+ ret = fb->board->check(fb, var);
+
+ if (ret == 0 &&
+ var->xres_virtual * var->bits_per_pixel / 8 *
+ var->yres_virtual > fb->fb.fix.smem_len)
+ ret = -EINVAL;
+
+ if (ret == 0)
+ ret = clcdfb_set_bitfields(fb, var);
+
+ return ret;
+}
+
+static int clcdfb_set_par(struct fb_info *info)
+{
+ struct clcd_fb *fb = to_clcd(info);
+ struct clcd_regs regs;
+
+ fb->fb.fix.line_length = fb->fb.var.xres_virtual *
+ fb->fb.var.bits_per_pixel / 8;
+
+ if (fb->fb.var.bits_per_pixel <= 8)
+ fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ else
+ fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+
+ fb->board->decode(fb, &regs);
+
+ clcdfb_disable(fb);
+
+ writel(regs.tim0, fb->regs + CLCD_TIM0);
+ writel(regs.tim1, fb->regs + CLCD_TIM1);
+ writel(regs.tim2, fb->regs + CLCD_TIM2);
+ writel(regs.tim3, fb->regs + CLCD_TIM3);
+
+ clcdfb_set_start(fb);
+
+ clk_set_rate(fb->clk, (1000000000 / regs.pixclock) * 1000);
+
+ fb->clcd_cntl = regs.cntl;
+
+ clcdfb_enable(fb, regs.cntl);
+
+#ifdef DEBUG
+ printk(KERN_INFO
+ "CLCD: Registers set to\n"
+ " %08x %08x %08x %08x\n"
+ " %08x %08x %08x %08x\n",
+ readl(fb->regs + CLCD_TIM0), readl(fb->regs + CLCD_TIM1),
+ readl(fb->regs + CLCD_TIM2), readl(fb->regs + CLCD_TIM3),
+ readl(fb->regs + CLCD_UBAS), readl(fb->regs + CLCD_LBAS),
+ readl(fb->regs + fb->off_ienb), readl(fb->regs + fb->off_cntl));
+#endif
+
+ return 0;
+}
+
+static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
+{
+ unsigned int mask = (1 << bf->length) - 1;
+
+ return (val >> (16 - bf->length) & mask) << bf->offset;
+}
+
+/*
+ * Set a single color register. The values supplied have a 16 bit
+ * magnitude. Return != 0 for invalid regno.
+ */
+static int
+clcdfb_setcolreg(unsigned int regno, unsigned int red, unsigned int green,
+ unsigned int blue, unsigned int transp, struct fb_info *info)
+{
+ struct clcd_fb *fb = to_clcd(info);
+
+ if (regno < 16)
+ fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
+ convert_bitfield(blue, &fb->fb.var.blue) |
+ convert_bitfield(green, &fb->fb.var.green) |
+ convert_bitfield(red, &fb->fb.var.red);
+
+ if (fb->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR && regno < 256) {
+ int hw_reg = CLCD_PALETTE + ((regno * 2) & ~3);
+ u32 val, mask, newval;
+
+ newval = (red >> 11) & 0x001f;
+ newval |= (green >> 6) & 0x03e0;
+ newval |= (blue >> 1) & 0x7c00;
+
+ /*
+ * 3.2.11: if we're configured for big endian
+ * byte order, the palette entries are swapped.
+ */
+ if (fb->clcd_cntl & CNTL_BEBO)
+ regno ^= 1;
+
+ if (regno & 1) {
+ newval <<= 16;
+ mask = 0x0000ffff;
+ } else {
+ mask = 0xffff0000;
+ }
+
+ val = readl(fb->regs + hw_reg) & mask;
+ writel(val | newval, fb->regs + hw_reg);
+ }
+
+ return regno > 255;
+}
+
+/*
+ * Blank the screen if blank_mode != 0, else unblank. If blank == NULL
+ * then the caller blanks by setting the CLUT (Color Look Up Table) to all
+ * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
+ * to e.g. a video mode which doesn't support it. Implements VESA suspend
+ * and powerdown modes on hardware that supports disabling hsync/vsync:
+ * blank_mode == 2: suspend vsync
+ * blank_mode == 3: suspend hsync
+ * blank_mode == 4: powerdown
+ */
+static int clcdfb_blank(int blank_mode, struct fb_info *info)
+{
+ struct clcd_fb *fb = to_clcd(info);
+
+ if (blank_mode != 0) {
+ clcdfb_disable(fb);
+ } else {
+ clcdfb_enable(fb, fb->clcd_cntl);
+ }
+ return 0;
+}
+
+static int clcdfb_mmap(struct fb_info *info,
+ struct vm_area_struct *vma)
+{
+ struct clcd_fb *fb = to_clcd(info);
+ unsigned long len, off = vma->vm_pgoff << PAGE_SHIFT;
+ int ret = -EINVAL;
+
+ len = info->fix.smem_len;
+
+ if (off <= len && vma->vm_end - vma->vm_start <= len - off &&
+ fb->board->mmap)
+ ret = fb->board->mmap(fb, vma);
+
+ return ret;
+}
+
+static const struct fb_ops clcdfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = clcdfb_check_var,
+ .fb_set_par = clcdfb_set_par,
+ .fb_setcolreg = clcdfb_setcolreg,
+ .fb_blank = clcdfb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_mmap = clcdfb_mmap,
+};
+
+static int clcdfb_register(struct clcd_fb *fb)
+{
+ int ret;
+
+ /*
+ * ARM PL111 always has IENB at 0x1c; it's only PL110
+ * which is reversed on some platforms.
+ */
+ if (amba_manf(fb->dev) == 0x41 && amba_part(fb->dev) == 0x111) {
+ fb->off_ienb = CLCD_PL111_IENB;
+ fb->off_cntl = CLCD_PL111_CNTL;
+ } else {
+ fb->off_ienb = CLCD_PL110_IENB;
+ fb->off_cntl = CLCD_PL110_CNTL;
+ }
+
+ fb->clk = clk_get(&fb->dev->dev, NULL);
+ if (IS_ERR(fb->clk)) {
+ ret = PTR_ERR(fb->clk);
+ goto out;
+ }
+
+ ret = clk_prepare(fb->clk);
+ if (ret)
+ goto free_clk;
+
+ fb->fb.device = &fb->dev->dev;
+
+ fb->fb.fix.mmio_start = fb->dev->res.start;
+ fb->fb.fix.mmio_len = resource_size(&fb->dev->res);
+
+ fb->regs = ioremap(fb->fb.fix.mmio_start, fb->fb.fix.mmio_len);
+ if (!fb->regs) {
+ printk(KERN_ERR "CLCD: unable to remap registers\n");
+ ret = -ENOMEM;
+ goto clk_unprep;
+ }
+
+ fb->fb.fbops = &clcdfb_ops;
+ fb->fb.flags = FBINFO_FLAG_DEFAULT;
+ fb->fb.pseudo_palette = fb->cmap;
+
+ strncpy(fb->fb.fix.id, clcd_name, sizeof(fb->fb.fix.id));
+ fb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+ fb->fb.fix.type_aux = 0;
+ fb->fb.fix.xpanstep = 0;
+ fb->fb.fix.ypanstep = 0;
+ fb->fb.fix.ywrapstep = 0;
+ fb->fb.fix.accel = FB_ACCEL_NONE;
+
+ fb->fb.var.xres = fb->panel->mode.xres;
+ fb->fb.var.yres = fb->panel->mode.yres;
+ fb->fb.var.xres_virtual = fb->panel->mode.xres;
+ fb->fb.var.yres_virtual = fb->panel->mode.yres;
+ fb->fb.var.bits_per_pixel = fb->panel->bpp;
+ fb->fb.var.grayscale = fb->panel->grayscale;
+ fb->fb.var.pixclock = fb->panel->mode.pixclock;
+ fb->fb.var.left_margin = fb->panel->mode.left_margin;
+ fb->fb.var.right_margin = fb->panel->mode.right_margin;
+ fb->fb.var.upper_margin = fb->panel->mode.upper_margin;
+ fb->fb.var.lower_margin = fb->panel->mode.lower_margin;
+ fb->fb.var.hsync_len = fb->panel->mode.hsync_len;
+ fb->fb.var.vsync_len = fb->panel->mode.vsync_len;
+ fb->fb.var.sync = fb->panel->mode.sync;
+ fb->fb.var.vmode = fb->panel->mode.vmode;
+ fb->fb.var.activate = FB_ACTIVATE_NOW;
+ fb->fb.var.nonstd = 0;
+ fb->fb.var.height = fb->panel->height;
+ fb->fb.var.width = fb->panel->width;
+ fb->fb.var.accel_flags = 0;
+
+ fb->fb.monspecs.hfmin = 0;
+ fb->fb.monspecs.hfmax = 100000;
+ fb->fb.monspecs.vfmin = 0;
+ fb->fb.monspecs.vfmax = 400;
+ fb->fb.monspecs.dclkmin = 1000000;
+ fb->fb.monspecs.dclkmax = 100000000;
+
+ /*
+ * Make sure that the bitfields are set appropriately.
+ */
+ clcdfb_set_bitfields(fb, &fb->fb.var);
+
+ /*
+ * Allocate colourmap.
+ */
+ ret = fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+ if (ret)
+ goto unmap;
+
+ /*
+ * Ensure interrupts are disabled.
+ */
+ writel(0, fb->regs + fb->off_ienb);
+
+ fb_set_var(&fb->fb, &fb->fb.var);
+
+ dev_info(&fb->dev->dev, "%s hardware, %s display\n",
+ fb->board->name, fb->panel->mode.name);
+
+ ret = register_framebuffer(&fb->fb);
+ if (ret == 0)
+ goto out;
+
+ printk(KERN_ERR "CLCD: cannot register framebuffer (%d)\n", ret);
+
+ fb_dealloc_cmap(&fb->fb.cmap);
+ unmap:
+ iounmap(fb->regs);
+ clk_unprep:
+ clk_unprepare(fb->clk);
+ free_clk:
+ clk_put(fb->clk);
+ out:
+ return ret;
+}
+
+#ifdef CONFIG_OF
+static int clcdfb_of_get_dpi_panel_mode(struct device_node *node,
+ struct clcd_panel *clcd_panel)
+{
+ int err;
+ struct display_timing timing;
+ struct videomode video;
+
+ err = of_get_display_timing(node, "panel-timing", &timing);
+ if (err) {
+ pr_err("%pOF: problems parsing panel-timing (%d)\n", node, err);
+ return err;
+ }
+
+ videomode_from_timing(&timing, &video);
+
+ err = fb_videomode_from_videomode(&video, &clcd_panel->mode);
+ if (err)
+ return err;
+
+ /* Set up some inversion flags */
+ if (timing.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+ clcd_panel->tim2 |= TIM2_IPC;
+ else if (!(timing.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE))
+ /*
+ * To preserve backwards compatibility, the IPC (inverted
+ * pixel clock) flag needs to be set on any display that
+ * doesn't explicitly specify that the pixel clock is
+ * active on the negative or positive edge.
+ */
+ clcd_panel->tim2 |= TIM2_IPC;
+
+ if (timing.flags & DISPLAY_FLAGS_HSYNC_LOW)
+ clcd_panel->tim2 |= TIM2_IHS;
+
+ if (timing.flags & DISPLAY_FLAGS_VSYNC_LOW)
+ clcd_panel->tim2 |= TIM2_IVS;
+
+ if (timing.flags & DISPLAY_FLAGS_DE_LOW)
+ clcd_panel->tim2 |= TIM2_IOE;
+
+ return 0;
+}
+
+static int clcdfb_snprintf_mode(char *buf, int size, struct fb_videomode *mode)
+{
+ return snprintf(buf, size, "%ux%u@%u", mode->xres, mode->yres,
+ mode->refresh);
+}
+
+static int clcdfb_of_get_backlight(struct device *dev,
+ struct clcd_panel *clcd_panel)
+{
+ struct backlight_device *backlight;
+
+ /* Look up the optional backlight device */
+ backlight = devm_of_find_backlight(dev);
+ if (IS_ERR(backlight))
+ return PTR_ERR(backlight);
+
+ clcd_panel->backlight = backlight;
+ return 0;
+}
+
+static int clcdfb_of_get_mode(struct device *dev, struct device_node *panel,
+ struct clcd_panel *clcd_panel)
+{
+ int err;
+ struct fb_videomode *mode;
+ char *name;
+ int len;
+
+ /* Only directly connected DPI panels supported for now */
+ if (of_device_is_compatible(panel, "panel-dpi"))
+ err = clcdfb_of_get_dpi_panel_mode(panel, clcd_panel);
+ else
+ err = -ENOENT;
+ if (err)
+ return err;
+ mode = &clcd_panel->mode;
+
+ len = clcdfb_snprintf_mode(NULL, 0, mode);
+ name = devm_kzalloc(dev, len + 1, GFP_KERNEL);
+ if (!name)
+ return -ENOMEM;
+
+ clcdfb_snprintf_mode(name, len + 1, mode);
+ mode->name = name;
+
+ return 0;
+}
+
+static int clcdfb_of_init_tft_panel(struct clcd_fb *fb, u32 r0, u32 g0, u32 b0)
+{
+ static struct {
+ unsigned int part;
+ u32 r0, g0, b0;
+ u32 caps;
+ } panels[] = {
+ { 0x110, 1, 7, 13, CLCD_CAP_5551 },
+ { 0x110, 0, 8, 16, CLCD_CAP_888 },
+ { 0x110, 16, 8, 0, CLCD_CAP_888 },
+ { 0x111, 4, 14, 20, CLCD_CAP_444 },
+ { 0x111, 3, 11, 19, CLCD_CAP_444 | CLCD_CAP_5551 },
+ { 0x111, 3, 10, 19, CLCD_CAP_444 | CLCD_CAP_5551 |
+ CLCD_CAP_565 },
+ { 0x111, 0, 8, 16, CLCD_CAP_444 | CLCD_CAP_5551 |
+ CLCD_CAP_565 | CLCD_CAP_888 },
+ };
+ int i;
+
+ /* Bypass pixel clock divider */
+ fb->panel->tim2 |= TIM2_BCD;
+
+ /* TFT display, vert. comp. interrupt at the start of the back porch */
+ fb->panel->cntl |= CNTL_LCDTFT | CNTL_LCDVCOMP(1);
+
+ fb->panel->caps = 0;
+
+ /* Match the setup with known variants */
+ for (i = 0; i < ARRAY_SIZE(panels) && !fb->panel->caps; i++) {
+ if (amba_part(fb->dev) != panels[i].part)
+ continue;
+ if (g0 != panels[i].g0)
+ continue;
+ if (r0 == panels[i].r0 && b0 == panels[i].b0)
+ fb->panel->caps = panels[i].caps;
+ }
+
+ /*
+ * If we actually physically connected the R lines to B and
+ * vice versa
+ */
+ if (r0 != 0 && b0 == 0)
+ fb->panel->bgr_connection = true;
+
+ return fb->panel->caps ? 0 : -EINVAL;
+}
+
+static int clcdfb_of_init_display(struct clcd_fb *fb)
+{
+ struct device_node *endpoint, *panel;
+ int err;
+ unsigned int bpp;
+ u32 max_bandwidth;
+ u32 tft_r0b0g0[3];
+
+ fb->panel = devm_kzalloc(&fb->dev->dev, sizeof(*fb->panel), GFP_KERNEL);
+ if (!fb->panel)
+ return -ENOMEM;
+
+ /*
+ * Fetch the panel endpoint.
+ */
+ endpoint = of_graph_get_next_endpoint(fb->dev->dev.of_node, NULL);
+ if (!endpoint)
+ return -ENODEV;
+
+ panel = of_graph_get_remote_port_parent(endpoint);
+ if (!panel)
+ return -ENODEV;
+
+ err = clcdfb_of_get_backlight(&fb->dev->dev, fb->panel);
+ if (err)
+ return err;
+
+ err = clcdfb_of_get_mode(&fb->dev->dev, panel, fb->panel);
+ if (err)
+ return err;
+
+ err = of_property_read_u32(fb->dev->dev.of_node, "max-memory-bandwidth",
+ &max_bandwidth);
+ if (!err) {
+ /*
+ * max_bandwidth is in bytes per second and pixclock in
+ * pico-seconds, so the maximum allowed bits per pixel is
+ * 8 * max_bandwidth / (PICOS2KHZ(pixclock) * 1000)
+ * Rearrange this calculation to avoid overflow and then ensure
+ * result is a valid format.
+ */
+ bpp = max_bandwidth / (1000 / 8)
+ / PICOS2KHZ(fb->panel->mode.pixclock);
+ bpp = rounddown_pow_of_two(bpp);
+ if (bpp > 32)
+ bpp = 32;
+ } else
+ bpp = 32;
+ fb->panel->bpp = bpp;
+
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ fb->panel->cntl |= CNTL_BEBO;
+#endif
+ fb->panel->width = -1;
+ fb->panel->height = -1;
+
+ if (of_property_read_u32_array(endpoint,
+ "arm,pl11x,tft-r0g0b0-pads",
+ tft_r0b0g0, ARRAY_SIZE(tft_r0b0g0)) != 0)
+ return -ENOENT;
+
+ return clcdfb_of_init_tft_panel(fb, tft_r0b0g0[0],
+ tft_r0b0g0[1], tft_r0b0g0[2]);
+}
+
+static int clcdfb_of_vram_setup(struct clcd_fb *fb)
+{
+ int err;
+ struct device_node *memory;
+ u64 size;
+
+ err = clcdfb_of_init_display(fb);
+ if (err)
+ return err;
+
+ memory = of_parse_phandle(fb->dev->dev.of_node, "memory-region", 0);
+ if (!memory)
+ return -ENODEV;
+
+ fb->fb.screen_base = of_iomap(memory, 0);
+ if (!fb->fb.screen_base)
+ return -ENOMEM;
+
+ fb->fb.fix.smem_start = of_translate_address(memory,
+ of_get_address(memory, 0, &size, NULL));
+ fb->fb.fix.smem_len = size;
+
+ return 0;
+}
+
+static int clcdfb_of_vram_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
+{
+ unsigned long off, user_size, kernel_size;
+
+
+ off = vma->vm_pgoff << PAGE_SHIFT;
+ user_size = vma->vm_end - vma->vm_start;
+ kernel_size = fb->fb.fix.smem_len;
+
+ if (off >= kernel_size || user_size > (kernel_size - off))
+ return -ENXIO;
+
+ return remap_pfn_range(vma, vma->vm_start,
+ __phys_to_pfn(fb->fb.fix.smem_start) + vma->vm_pgoff,
+ user_size,
+ pgprot_writecombine(vma->vm_page_prot));
+}
+
+static void clcdfb_of_vram_remove(struct clcd_fb *fb)
+{
+ iounmap(fb->fb.screen_base);
+}
+
+static int clcdfb_of_dma_setup(struct clcd_fb *fb)
+{
+ unsigned long framesize;
+ dma_addr_t dma;
+ int err;
+
+ err = clcdfb_of_init_display(fb);
+ if (err)
+ return err;
+
+ framesize = PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres *
+ fb->panel->bpp / 8);
+ fb->fb.screen_base = dma_alloc_coherent(&fb->dev->dev, framesize,
+ &dma, GFP_KERNEL);
+ if (!fb->fb.screen_base)
+ return -ENOMEM;
+
+ fb->fb.fix.smem_start = dma;
+ fb->fb.fix.smem_len = framesize;
+
+ return 0;
+}
+
+static int clcdfb_of_dma_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
+{
+ return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,
+ fb->fb.fix.smem_start, fb->fb.fix.smem_len);
+}
+
+static void clcdfb_of_dma_remove(struct clcd_fb *fb)
+{
+ dma_free_coherent(&fb->dev->dev, fb->fb.fix.smem_len,
+ fb->fb.screen_base, fb->fb.fix.smem_start);
+}
+
+static struct clcd_board *clcdfb_of_get_board(struct amba_device *dev)
+{
+ struct clcd_board *board = devm_kzalloc(&dev->dev, sizeof(*board),
+ GFP_KERNEL);
+ struct device_node *node = dev->dev.of_node;
+
+ if (!board)
+ return NULL;
+
+ board->name = of_node_full_name(node);
+ board->caps = CLCD_CAP_ALL;
+ board->check = clcdfb_check;
+ board->decode = clcdfb_decode;
+ if (of_find_property(node, "memory-region", NULL)) {
+ board->setup = clcdfb_of_vram_setup;
+ board->mmap = clcdfb_of_vram_mmap;
+ board->remove = clcdfb_of_vram_remove;
+ } else {
+ board->setup = clcdfb_of_dma_setup;
+ board->mmap = clcdfb_of_dma_mmap;
+ board->remove = clcdfb_of_dma_remove;
+ }
+
+ return board;
+}
+#else
+static struct clcd_board *clcdfb_of_get_board(struct amba_device *dev)
+{
+ return NULL;
+}
+#endif
+
+static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id)
+{
+ struct clcd_board *board = dev_get_platdata(&dev->dev);
+ struct clcd_fb *fb;
+ int ret;
+
+ if (!board)
+ board = clcdfb_of_get_board(dev);
+
+ if (!board)
+ return -EINVAL;
+
+ ret = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+ if (ret)
+ goto out;
+
+ ret = amba_request_regions(dev, NULL);
+ if (ret) {
+ printk(KERN_ERR "CLCD: unable to reserve regs region\n");
+ goto out;
+ }
+
+ fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+ if (!fb) {
+ ret = -ENOMEM;
+ goto free_region;
+ }
+
+ fb->dev = dev;
+ fb->board = board;
+
+ dev_info(&fb->dev->dev, "PL%03x designer %02x rev%u at 0x%08llx\n",
+ amba_part(dev), amba_manf(dev), amba_rev(dev),
+ (unsigned long long)dev->res.start);
+
+ ret = fb->board->setup(fb);
+ if (ret)
+ goto free_fb;
+
+ ret = clcdfb_register(fb);
+ if (ret == 0) {
+ amba_set_drvdata(dev, fb);
+ goto out;
+ }
+
+ fb->board->remove(fb);
+ free_fb:
+ kfree(fb);
+ free_region:
+ amba_release_regions(dev);
+ out:
+ return ret;
+}
+
+static int clcdfb_remove(struct amba_device *dev)
+{
+ struct clcd_fb *fb = amba_get_drvdata(dev);
+
+ clcdfb_disable(fb);
+ unregister_framebuffer(&fb->fb);
+ if (fb->fb.cmap.len)
+ fb_dealloc_cmap(&fb->fb.cmap);
+ iounmap(fb->regs);
+ clk_unprepare(fb->clk);
+ clk_put(fb->clk);
+
+ fb->board->remove(fb);
+
+ kfree(fb);
+
+ amba_release_regions(dev);
+
+ return 0;
+}
+
+static const struct amba_id clcdfb_id_table[] = {
+ {
+ .id = 0x00041110,
+ .mask = 0x000ffffe,
+ },
+ { 0, 0 },
+};
+
+MODULE_DEVICE_TABLE(amba, clcdfb_id_table);
+
+static struct amba_driver clcd_driver = {
+ .drv = {
+ .name = "clcd-pl11x",
+ },
+ .probe = clcdfb_probe,
+ .remove = clcdfb_remove,
+ .id_table = clcdfb_id_table,
+};
+
+static int __init amba_clcdfb_init(void)
+{
+ if (fb_get_options("ambafb", NULL))
+ return -ENODEV;
+
+ return amba_driver_register(&clcd_driver);
+}
+
+module_init(amba_clcdfb_init);
+
+static void __exit amba_clcdfb_exit(void)
+{
+ amba_driver_unregister(&clcd_driver);
+}
+
+module_exit(amba_clcdfb_exit);
+
+MODULE_DESCRIPTION("ARM PrimeCell PL110 CLCD core driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/fbdev/core/bitblit.c b/drivers/video/fbdev/core/bitblit.c
index 4e6cbc24346d..9725ecd1255b 100644
--- a/drivers/video/fbdev/core/bitblit.c
+++ b/drivers/video/fbdev/core/bitblit.c
@@ -234,7 +234,7 @@ static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
}
static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg)
+ int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -247,15 +247,6 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
cursor.set = 0;
- if (softback_lines) {
- if (y + softback_lines >= vc->vc_rows) {
- mode = CM_ERASE;
- ops->cursor_flash = 0;
- return;
- } else
- y += softback_lines;
- }
-
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 66167830fefd..428ac2e2eba8 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -122,12 +122,6 @@ static int logo_lines;
/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
enums. */
static int logo_shown = FBCON_LOGO_CANSHOW;
-/* Software scrollback */
-static int fbcon_softback_size = 32768;
-static unsigned long softback_buf, softback_curr;
-static unsigned long softback_in;
-static unsigned long softback_top, softback_end;
-static int softback_lines;
/* console mappings */
static int first_fb_vc;
static int last_fb_vc = MAX_NR_CONSOLES - 1;
@@ -167,12 +161,8 @@ static int margin_color;
static const struct consw fb_con;
-#define CM_SOFTBACK (8)
-
#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
-static int fbcon_set_origin(struct vc_data *);
-
static int fbcon_cursor_noblink;
#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
@@ -373,18 +363,6 @@ static int get_color(struct vc_data *vc, struct fb_info *info,
return color;
}
-static void fbcon_update_softback(struct vc_data *vc)
-{
- int l = fbcon_softback_size / vc->vc_size_row;
-
- if (l > 5)
- softback_end = softback_buf + l * vc->vc_size_row;
- else
- /* Smaller scrollback makes no sense, and 0 would screw
- the operation totally */
- softback_top = 0;
-}
-
static void fb_flashcursor(struct work_struct *work)
{
struct fb_info *info = container_of(work, struct fb_info, queue);
@@ -414,7 +392,7 @@ static void fb_flashcursor(struct work_struct *work)
c = scr_readw((u16 *) vc->vc_pos);
mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
CM_ERASE : CM_DRAW;
- ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
+ ops->cursor(vc, info, mode, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
console_unlock();
}
@@ -471,13 +449,7 @@ static int __init fb_console_setup(char *this_opt)
}
if (!strncmp(options, "scrollback:", 11)) {
- options += 11;
- if (*options) {
- fbcon_softback_size = simple_strtoul(options, &options, 0);
- if (*options == 'k' || *options == 'K') {
- fbcon_softback_size *= 1024;
- }
- }
+ pr_warn("Ignoring scrollback size option\n");
continue;
}
@@ -1022,31 +994,6 @@ static const char *fbcon_startup(void)
set_blitting_type(vc, info);
- if (info->fix.type != FB_TYPE_TEXT) {
- if (fbcon_softback_size) {
- if (!softback_buf) {
- softback_buf =
- (unsigned long)
- kvmalloc(fbcon_softback_size,
- GFP_KERNEL);
- if (!softback_buf) {
- fbcon_softback_size = 0;
- softback_top = 0;
- }
- }
- } else {
- if (softback_buf) {
- kvfree((void *) softback_buf);
- softback_buf = 0;
- softback_top = 0;
- }
- }
- if (softback_buf)
- softback_in = softback_top = softback_curr =
- softback_buf;
- softback_lines = 0;
- }
-
/* Setup default font */
if (!p->fontdata && !vc->vc_font.data) {
if (!fontname[0] || !(font = find_font(fontname)))
@@ -1220,9 +1167,6 @@ static void fbcon_init(struct vc_data *vc, int init)
if (logo)
fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
- if (vc == svc && softback_buf)
- fbcon_update_softback(vc);
-
if (ops->rotate_font && ops->rotate_font(info, vc)) {
ops->rotate = FB_ROTATE_UR;
set_blitting_type(vc, info);
@@ -1385,7 +1329,6 @@ static void fbcon_cursor(struct vc_data *vc, int mode)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- int y;
int c = scr_readw((u16 *) vc->vc_pos);
ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
@@ -1399,16 +1342,8 @@ static void fbcon_cursor(struct vc_data *vc, int mode)
fbcon_add_cursor_timer(info);
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
- if (mode & CM_SOFTBACK) {
- mode &= ~CM_SOFTBACK;
- y = softback_lines;
- } else {
- if (softback_lines)
- fbcon_set_origin(vc);
- y = 0;
- }
- ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
+ ops->cursor(vc, info, mode, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
}
@@ -1479,8 +1414,6 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
if (con_is_visible(vc)) {
update_screen(vc);
- if (softback_buf)
- fbcon_update_softback(vc);
}
}
@@ -1618,99 +1551,6 @@ static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
scrollback_current = 0;
}
-static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
- long delta)
-{
- int count = vc->vc_rows;
- unsigned short *d, *s;
- unsigned long n;
- int line = 0;
-
- d = (u16 *) softback_curr;
- if (d == (u16 *) softback_in)
- d = (u16 *) vc->vc_origin;
- n = softback_curr + delta * vc->vc_size_row;
- softback_lines -= delta;
- if (delta < 0) {
- if (softback_curr < softback_top && n < softback_buf) {
- n += softback_end - softback_buf;
- if (n < softback_top) {
- softback_lines -=
- (softback_top - n) / vc->vc_size_row;
- n = softback_top;
- }
- } else if (softback_curr >= softback_top
- && n < softback_top) {
- softback_lines -=
- (softback_top - n) / vc->vc_size_row;
- n = softback_top;
- }
- } else {
- if (softback_curr > softback_in && n >= softback_end) {
- n += softback_buf - softback_end;
- if (n > softback_in) {
- n = softback_in;
- softback_lines = 0;
- }
- } else if (softback_curr <= softback_in && n > softback_in) {
- n = softback_in;
- softback_lines = 0;
- }
- }
- if (n == softback_curr)
- return;
- softback_curr = n;
- s = (u16 *) softback_curr;
- if (s == (u16 *) softback_in)
- s = (u16 *) vc->vc_origin;
- while (count--) {
- unsigned short *start;
- unsigned short *le;
- unsigned short c;
- int x = 0;
- unsigned short attr = 1;
-
- start = s;
- le = advance_row(s, 1);
- do {
- c = scr_readw(s);
- if (attr != (c & 0xff00)) {
- attr = c & 0xff00;
- if (s > start) {
- fbcon_putcs(vc, start, s - start,
- line, x);
- x += s - start;
- start = s;
- }
- }
- if (c == scr_readw(d)) {
- if (s > start) {
- fbcon_putcs(vc, start, s - start,
- line, x);
- x += s - start + 1;
- start = s + 1;
- } else {
- x++;
- start++;
- }
- }
- s++;
- d++;
- } while (s < le);
- if (s > start)
- fbcon_putcs(vc, start, s - start, line, x);
- line++;
- if (d == (u16 *) softback_end)
- d = (u16 *) softback_buf;
- if (d == (u16 *) softback_in)
- d = (u16 *) vc->vc_origin;
- if (s == (u16 *) softback_end)
- s = (u16 *) softback_buf;
- if (s == (u16 *) softback_in)
- s = (u16 *) vc->vc_origin;
- }
-}
-
static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int dy)
{
@@ -1850,31 +1690,6 @@ static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
}
}
-static inline void fbcon_softback_note(struct vc_data *vc, int t,
- int count)
-{
- unsigned short *p;
-
- if (vc->vc_num != fg_console)
- return;
- p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
-
- while (count) {
- scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
- count--;
- p = advance_row(p, 1);
- softback_in += vc->vc_size_row;
- if (softback_in == softback_end)
- softback_in = softback_buf;
- if (softback_in == softback_top) {
- softback_top += vc->vc_size_row;
- if (softback_top == softback_end)
- softback_top = softback_buf;
- }
- }
- softback_curr = softback_in;
-}
-
static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
enum con_scroll dir, unsigned int count)
{
@@ -1897,8 +1712,6 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
case SM_UP:
if (count > vc->vc_rows) /* Maximum realistic size */
count = vc->vc_rows;
- if (softback_top)
- fbcon_softback_note(vc, t, count);
if (logo_shown >= 0)
goto redraw_up;
switch (p->scrollmode) {
@@ -2203,7 +2016,7 @@ static int fbcon_resize(struct vc_data *vc, unsigned int width,
struct fb_var_screeninfo var = info->var;
int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
- if (ops->p && ops->p->userfont && FNTSIZE(vc->vc_font.data)) {
+ if (p->userfont && FNTSIZE(vc->vc_font.data)) {
int size;
int pitch = PITCH(vc->vc_font.width);
@@ -2269,14 +2082,6 @@ static int fbcon_switch(struct vc_data *vc)
info = registered_fb[con2fb_map[vc->vc_num]];
ops = info->fbcon_par;
- if (softback_top) {
- if (softback_lines)
- fbcon_set_origin(vc);
- softback_top = softback_curr = softback_in = softback_buf;
- softback_lines = 0;
- fbcon_update_softback(vc);
- }
-
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;
@@ -2492,6 +2297,9 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
if (font->width <= 8) {
j = vc->vc_font.height;
+ if (font->charcount * j > FNTSIZE(fontdata))
+ return -EINVAL;
+
for (i = 0; i < font->charcount; i++) {
memcpy(data, fontdata, j);
memset(data + j, 0, 32 - j);
@@ -2500,6 +2308,9 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
}
} else if (font->width <= 16) {
j = vc->vc_font.height * 2;
+ if (font->charcount * j > FNTSIZE(fontdata))
+ return -EINVAL;
+
for (i = 0; i < font->charcount; i++) {
memcpy(data, fontdata, j);
memset(data + j, 0, 64 - j);
@@ -2507,6 +2318,9 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
fontdata += j;
}
} else if (font->width <= 24) {
+ if (font->charcount * (vc->vc_font.height * sizeof(u32)) > FNTSIZE(fontdata))
+ return -EINVAL;
+
for (i = 0; i < font->charcount; i++) {
for (j = 0; j < vc->vc_font.height; j++) {
*data++ = fontdata[0];
@@ -2519,6 +2333,9 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
}
} else {
j = vc->vc_font.height * 4;
+ if (font->charcount * j > FNTSIZE(fontdata))
+ return -EINVAL;
+
for (i = 0; i < font->charcount; i++) {
memcpy(data, fontdata, j);
memset(data + j, 0, 128 - j);
@@ -2600,9 +2417,6 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
int cnt;
char *old_data = NULL;
- if (con_is_visible(vc) && softback_lines)
- fbcon_set_origin(vc);
-
resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
if (p->userfont)
old_data = vc->vc_font.data;
@@ -2628,8 +2442,6 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
cols /= w;
rows /= h;
vc_resize(vc, cols, rows);
- if (con_is_visible(vc) && softback_buf)
- fbcon_update_softback(vc);
} else if (con_is_visible(vc)
&& vc->vc_mode == KD_TEXT) {
fbcon_clear_margins(vc, 0);
@@ -2786,21 +2598,9 @@ static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
fb_set_cmap(&palette_cmap, info);
}
-static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
+static u16 *fbcon_screen_pos(const struct vc_data *vc, int offset)
{
- unsigned long p;
- int line;
-
- if (vc->vc_num != fg_console || !softback_lines)
- return (u16 *) (vc->vc_origin + offset);
- line = offset / vc->vc_size_row;
- if (line >= softback_lines)
- return (u16 *) (vc->vc_origin + offset -
- softback_lines * vc->vc_size_row);
- p = softback_curr + offset;
- if (p >= softback_end)
- p += softback_buf - softback_end;
- return (u16 *) p;
+ return (u16 *) (vc->vc_origin + offset);
}
static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
@@ -2814,22 +2614,7 @@ static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
x = offset % vc->vc_cols;
y = offset / vc->vc_cols;
- if (vc->vc_num == fg_console)
- y += softback_lines;
ret = pos + (vc->vc_cols - x) * 2;
- } else if (vc->vc_num == fg_console && softback_lines) {
- unsigned long offset = pos - softback_curr;
-
- if (pos < softback_curr)
- offset += softback_end - softback_buf;
- offset /= 2;
- x = offset % vc->vc_cols;
- y = offset / vc->vc_cols;
- ret = pos + (vc->vc_cols - x) * 2;
- if (ret == softback_end)
- ret = softback_buf;
- if (ret == softback_in)
- ret = vc->vc_origin;
} else {
/* Should not happen */
x = y = 0;
@@ -2857,107 +2642,7 @@ static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
(((a) & 0x0700) << 4);
scr_writew(a, p++);
- if (p == (u16 *) softback_end)
- p = (u16 *) softback_buf;
- if (p == (u16 *) softback_in)
- p = (u16 *) vc->vc_origin;
- }
-}
-
-static void fbcon_scrolldelta(struct vc_data *vc, int lines)
-{
- struct fb_info *info = registered_fb[con2fb_map[fg_console]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *disp = &fb_display[fg_console];
- int offset, limit, scrollback_old;
-
- if (softback_top) {
- if (vc->vc_num != fg_console)
- return;
- if (vc->vc_mode != KD_TEXT || !lines)
- return;
- if (logo_shown >= 0) {
- struct vc_data *conp2 = vc_cons[logo_shown].d;
-
- if (conp2->vc_top == logo_lines
- && conp2->vc_bottom == conp2->vc_rows)
- conp2->vc_top = 0;
- if (logo_shown == vc->vc_num) {
- unsigned long p, q;
- int i;
-
- p = softback_in;
- q = vc->vc_origin +
- logo_lines * vc->vc_size_row;
- for (i = 0; i < logo_lines; i++) {
- if (p == softback_top)
- break;
- if (p == softback_buf)
- p = softback_end;
- p -= vc->vc_size_row;
- q -= vc->vc_size_row;
- scr_memcpyw((u16 *) q, (u16 *) p,
- vc->vc_size_row);
- }
- softback_in = softback_curr = p;
- update_region(vc, vc->vc_origin,
- logo_lines * vc->vc_cols);
- }
- logo_shown = FBCON_LOGO_CANSHOW;
- }
- fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
- fbcon_redraw_softback(vc, disp, lines);
- fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
- return;
- }
-
- if (!scrollback_phys_max)
- return;
-
- scrollback_old = scrollback_current;
- scrollback_current -= lines;
- if (scrollback_current < 0)
- scrollback_current = 0;
- else if (scrollback_current > scrollback_max)
- scrollback_current = scrollback_max;
- if (scrollback_current == scrollback_old)
- return;
-
- if (fbcon_is_inactive(vc, info))
- return;
-
- fbcon_cursor(vc, CM_ERASE);
-
- offset = disp->yscroll - scrollback_current;
- limit = disp->vrows;
- switch (disp->scrollmode) {
- case SCROLL_WRAP_MOVE:
- info->var.vmode |= FB_VMODE_YWRAP;
- break;
- case SCROLL_PAN_MOVE:
- case SCROLL_PAN_REDRAW:
- limit -= vc->vc_rows;
- info->var.vmode &= ~FB_VMODE_YWRAP;
- break;
}
- if (offset < 0)
- offset += limit;
- else if (offset >= limit)
- offset -= limit;
-
- ops->var.xoffset = 0;
- ops->var.yoffset = offset * vc->vc_font.height;
- ops->update_start(info);
-
- if (!scrollback_current)
- fbcon_cursor(vc, CM_DRAW);
-}
-
-static int fbcon_set_origin(struct vc_data *vc)
-{
- if (softback_lines)
- fbcon_scrolldelta(vc, softback_lines);
- return 0;
}
void fbcon_suspended(struct fb_info *info)
@@ -3020,8 +2705,6 @@ static void fbcon_modechanged(struct fb_info *info)
fbcon_set_palette(vc, color_table);
update_screen(vc);
- if (softback_buf)
- fbcon_update_softback(vc);
}
}
@@ -3432,8 +3115,6 @@ static const struct consw fb_con = {
.con_font_default = fbcon_set_def_font,
.con_font_copy = fbcon_copy_font,
.con_set_palette = fbcon_set_palette,
- .con_scrolldelta = fbcon_scrolldelta,
- .con_set_origin = fbcon_set_origin,
.con_invert_region = fbcon_invert_region,
.con_screen_pos = fbcon_screen_pos,
.con_getxy = fbcon_getxy,
@@ -3667,9 +3348,6 @@ static void fbcon_exit(void)
}
#endif
- kvfree((void *)softback_buf);
- softback_buf = 0UL;
-
for_each_registered_fb(i) {
int pending = 0;
diff --git a/drivers/video/fbdev/core/fbcon.h b/drivers/video/fbdev/core/fbcon.h
index 20dea853765f..9315b360c898 100644
--- a/drivers/video/fbdev/core/fbcon.h
+++ b/drivers/video/fbdev/core/fbcon.h
@@ -62,7 +62,7 @@ struct fbcon_ops {
void (*clear_margins)(struct vc_data *vc, struct fb_info *info,
int color, int bottom_only);
void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg);
+ int fg, int bg);
int (*update_start)(struct fb_info *info);
int (*rotate_font)(struct fb_info *info, struct vc_data *vc);
struct fb_var_screeninfo var; /* copy of the current fb_var_screeninfo */
@@ -152,13 +152,6 @@ static inline int attr_col_ec(int shift, struct vc_data *vc,
#define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0)
#define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1)
-/* Font */
-#define REFCOUNT(fd) (((int *)(fd))[-1])
-#define FNTSIZE(fd) (((int *)(fd))[-2])
-#define FNTCHARCNT(fd) (((int *)(fd))[-3])
-#define FNTSUM(fd) (((int *)(fd))[-4])
-#define FONT_EXTRA_WORDS 4
-
/*
* Scroll Method
*/
diff --git a/drivers/video/fbdev/core/fbcon_ccw.c b/drivers/video/fbdev/core/fbcon_ccw.c
index 5b177131e062..bbd869efd03b 100644
--- a/drivers/video/fbdev/core/fbcon_ccw.c
+++ b/drivers/video/fbdev/core/fbcon_ccw.c
@@ -219,7 +219,7 @@ static void ccw_clear_margins(struct vc_data *vc, struct fb_info *info,
}
static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg)
+ int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -236,15 +236,6 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
cursor.set = 0;
- if (softback_lines) {
- if (y + softback_lines >= vc->vc_rows) {
- mode = CM_ERASE;
- ops->cursor_flash = 0;
- return;
- } else
- y += softback_lines;
- }
-
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
diff --git a/drivers/video/fbdev/core/fbcon_cw.c b/drivers/video/fbdev/core/fbcon_cw.c
index 894d01a62f30..a34cbe8e9874 100644
--- a/drivers/video/fbdev/core/fbcon_cw.c
+++ b/drivers/video/fbdev/core/fbcon_cw.c
@@ -202,7 +202,7 @@ static void cw_clear_margins(struct vc_data *vc, struct fb_info *info,
}
static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg)
+ int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -219,15 +219,6 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
cursor.set = 0;
- if (softback_lines) {
- if (y + softback_lines >= vc->vc_rows) {
- mode = CM_ERASE;
- ops->cursor_flash = 0;
- return;
- } else
- y += softback_lines;
- }
-
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
diff --git a/drivers/video/fbdev/core/fbcon_rotate.c b/drivers/video/fbdev/core/fbcon_rotate.c
index c0d445294aa7..ac72d4f85f7d 100644
--- a/drivers/video/fbdev/core/fbcon_rotate.c
+++ b/drivers/video/fbdev/core/fbcon_rotate.c
@@ -14,6 +14,7 @@
#include <linux/fb.h>
#include <linux/vt_kern.h>
#include <linux/console.h>
+#include <linux/font.h>
#include <asm/types.h>
#include "fbcon.h"
#include "fbcon_rotate.h"
diff --git a/drivers/video/fbdev/core/fbcon_ud.c b/drivers/video/fbdev/core/fbcon_ud.c
index 01b87f278d79..199cbc7abe35 100644
--- a/drivers/video/fbdev/core/fbcon_ud.c
+++ b/drivers/video/fbdev/core/fbcon_ud.c
@@ -249,7 +249,7 @@ static void ud_clear_margins(struct vc_data *vc, struct fb_info *info,
}
static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg)
+ int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -267,15 +267,6 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
cursor.set = 0;
- if (softback_lines) {
- if (y + softback_lines >= vc->vc_rows) {
- mode = CM_ERASE;
- ops->cursor_flash = 0;
- return;
- } else
- y += softback_lines;
- }
-
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));
diff --git a/drivers/video/fbdev/core/tileblit.c b/drivers/video/fbdev/core/tileblit.c
index 1dfaff0881fb..628fe5e010c0 100644
--- a/drivers/video/fbdev/core/tileblit.c
+++ b/drivers/video/fbdev/core/tileblit.c
@@ -13,6 +13,7 @@
#include <linux/fb.h>
#include <linux/vt_kern.h>
#include <linux/console.h>
+#include <linux/font.h>
#include <asm/types.h>
#include "fbcon.h"
@@ -80,7 +81,7 @@ static void tile_clear_margins(struct vc_data *vc, struct fb_info *info,
}
static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
- int softback_lines, int fg, int bg)
+ int fg, int bg)
{
struct fb_tilecursor cursor;
int use_sw = vc->vc_cursor_type & CUR_SW;
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-06 09:47:41 +0300