--- /dev/null
+From 0e3d50bfcbd338254795a700dcff429a96cba1a6 Mon Sep 17 00:00:00 2001
+From: Alex Deucher <alexander.deucher@amd.com>
+Date: Tue, 5 Feb 2013 11:47:09 -0500
+Subject: drm/radeon/dce6: fix display powergating
+
+From: Alex Deucher <alexander.deucher@amd.com>
+
+commit 0e3d50bfcbd338254795a700dcff429a96cba1a6 upstream.
+
+Only enable it when we disable the display rather than
+at DPMS time since enabling it requires a full modeset
+to restore the display state. Fixes blank screens in
+certain cases.
+
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpu/drm/radeon/atombios_crtc.c | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/radeon/atombios_crtc.c
++++ b/drivers/gpu/drm/radeon/atombios_crtc.c
+@@ -258,8 +258,6 @@ void atombios_crtc_dpms(struct drm_crtc
+ radeon_crtc->enabled = true;
+ /* adjust pm to dpms changes BEFORE enabling crtcs */
+ radeon_pm_compute_clocks(rdev);
+- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
+- atombios_powergate_crtc(crtc, ATOM_DISABLE);
+ atombios_enable_crtc(crtc, ATOM_ENABLE);
+ if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
+ atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
+@@ -277,8 +275,6 @@ void atombios_crtc_dpms(struct drm_crtc
+ atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
+ atombios_enable_crtc(crtc, ATOM_DISABLE);
+ radeon_crtc->enabled = false;
+- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
+- atombios_powergate_crtc(crtc, ATOM_ENABLE);
+ /* adjust pm to dpms changes AFTER disabling crtcs */
+ radeon_pm_compute_clocks(rdev);
+ break;
+@@ -1670,6 +1666,8 @@ static void atombios_crtc_disable(struct
+ int i;
+
+ atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
++ if (ASIC_IS_DCE6(rdev))
++ atombios_powergate_crtc(crtc, ATOM_ENABLE);
+
+ for (i = 0; i < rdev->num_crtc; i++) {
+ if (rdev->mode_info.crtcs[i] &&
--- /dev/null
+From 677d23b70bf949f75746c80cbae92c233c6b5e2a Mon Sep 17 00:00:00 2001
+From: Dave Airlie <airlied@redhat.com>
+Date: Thu, 7 Feb 2013 12:30:25 +1000
+Subject: drm/udl: disable fb_defio by default
+
+From: Dave Airlie <airlied@redhat.com>
+
+commit 677d23b70bf949f75746c80cbae92c233c6b5e2a upstream.
+
+There seems to be a bad interaction between gem/shmem and defio on top,
+I get list corruption on the page lru in the shmem code.
+
+Turn it off for now until we get some more digging done.
+
+Signed-off-by: Dave Airlie <airlied@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpu/drm/udl/udl_fb.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/udl/udl_fb.c
++++ b/drivers/gpu/drm/udl/udl_fb.c
+@@ -22,9 +22,9 @@
+
+ #include "drm_fb_helper.h"
+
+-#define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */
++#define DL_DEFIO_WRITE_DELAY (HZ/20) /* fb_deferred_io.delay in jiffies */
+
+-static int fb_defio = 1; /* Optionally enable experimental fb_defio mmap support */
++static int fb_defio = 0; /* Optionally enable experimental fb_defio mmap support */
+ static int fb_bpp = 16;
+
+ module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
--- /dev/null
+From bcb39af4486be07e896fc374a2336bad3104ae0a Mon Sep 17 00:00:00 2001
+From: Dave Airlie <airlied@redhat.com>
+Date: Thu, 7 Feb 2013 11:19:15 +1000
+Subject: drm/udl: make usage as a console safer
+
+From: Dave Airlie <airlied@redhat.com>
+
+commit bcb39af4486be07e896fc374a2336bad3104ae0a upstream.
+
+Okay you don't really want to use udl devices as your console, but if
+you are unlucky enough to do so, you run into a lot of schedule while atomic
+due to printk being called from all sorts of funky places. So check if we
+are in an atomic context, and queue the damage for later, the next printk
+should cause it to appear. This isn't ideal, but it is simple, and seems to
+work okay in my testing here.
+
+(dirty area idea came from xenfb)
+
+fixes a bunch of sleeping while atomic issues running fbcon on udl devices.
+
+Signed-off-by: Dave Airlie <airlied@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpu/drm/udl/udl_drv.h | 2 +
+ drivers/gpu/drm/udl/udl_fb.c | 44 ++++++++++++++++++++++++++++++++++++++----
+ 2 files changed, 42 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/udl/udl_drv.h
++++ b/drivers/gpu/drm/udl/udl_drv.h
+@@ -74,6 +74,8 @@ struct udl_framebuffer {
+ struct drm_framebuffer base;
+ struct udl_gem_object *obj;
+ bool active_16; /* active on the 16-bit channel */
++ int x1, y1, x2, y2; /* dirty rect */
++ spinlock_t dirty_lock;
+ };
+
+ #define to_udl_fb(x) container_of(x, struct udl_framebuffer, base)
+--- a/drivers/gpu/drm/udl/udl_fb.c
++++ b/drivers/gpu/drm/udl/udl_fb.c
+@@ -153,6 +153,9 @@ int udl_handle_damage(struct udl_framebu
+ struct urb *urb;
+ int aligned_x;
+ int bpp = (fb->base.bits_per_pixel / 8);
++ int x2, y2;
++ bool store_for_later = false;
++ unsigned long flags;
+
+ if (!fb->active_16)
+ return 0;
+@@ -160,8 +163,6 @@ int udl_handle_damage(struct udl_framebu
+ if (!fb->obj->vmapping)
+ udl_gem_vmap(fb->obj);
+
+- start_cycles = get_cycles();
+-
+ aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long));
+ width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long));
+ x = aligned_x;
+@@ -171,19 +172,53 @@ int udl_handle_damage(struct udl_framebu
+ (y + height > fb->base.height))
+ return -EINVAL;
+
++ /* if we are in atomic just store the info
++ can't test inside spin lock */
++ if (in_atomic())
++ store_for_later = true;
++
++ x2 = x + width - 1;
++ y2 = y + height - 1;
++
++ spin_lock_irqsave(&fb->dirty_lock, flags);
++
++ if (fb->y1 < y)
++ y = fb->y1;
++ if (fb->y2 > y2)
++ y2 = fb->y2;
++ if (fb->x1 < x)
++ x = fb->x1;
++ if (fb->x2 > x2)
++ x2 = fb->x2;
++
++ if (store_for_later) {
++ fb->x1 = x;
++ fb->x2 = x2;
++ fb->y1 = y;
++ fb->y2 = y2;
++ spin_unlock_irqrestore(&fb->dirty_lock, flags);
++ return 0;
++ }
++
++ fb->x1 = fb->y1 = INT_MAX;
++ fb->x2 = fb->y2 = 0;
++
++ spin_unlock_irqrestore(&fb->dirty_lock, flags);
++ start_cycles = get_cycles();
++
+ urb = udl_get_urb(dev);
+ if (!urb)
+ return 0;
+ cmd = urb->transfer_buffer;
+
+- for (i = y; i < y + height ; i++) {
++ for (i = y; i <= y2 ; i++) {
+ const int line_offset = fb->base.pitches[0] * i;
+ const int byte_offset = line_offset + (x * bpp);
+ const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp);
+ if (udl_render_hline(dev, bpp, &urb,
+ (char *) fb->obj->vmapping,
+ &cmd, byte_offset, dev_byte_offset,
+- width * bpp,
++ (x2 - x + 1) * bpp,
+ &bytes_identical, &bytes_sent))
+ goto error;
+ }
+@@ -408,6 +443,7 @@ udl_framebuffer_init(struct drm_device *
+ {
+ int ret;
+
++ spin_lock_init(&ufb->dirty_lock);
+ ufb->obj = obj;
+ ret = drm_framebuffer_init(dev, &ufb->base, &udlfb_funcs);
+ drm_helper_mode_fill_fb_struct(&ufb->base, mode_cmd);
alsa-hda-workaround-for-silent-output-on-sony-vaio-vgc-ln51jgb-with-alc889.patch
alsa-hda-hdmi-eld-shouldn-t-be-valid-after-unplug.patch
sunvdc-fix-off-by-one-in-generic_request.patch
+drm-radeon-dce6-fix-display-powergating.patch
+drm-udl-make-usage-as-a-console-safer.patch
+drm-udl-disable-fb_defio-by-default.patch
+vgacon-vt-clear-buffer-attributes-when-we-load-a-512-character-font-v2.patch
--- /dev/null
+From 2a2483072393b27f4336ab068a1f48ca19ff1c1e Mon Sep 17 00:00:00 2001
+From: Dave Airlie <airlied@redhat.com>
+Date: Thu, 24 Jan 2013 14:14:19 +1000
+Subject: vgacon/vt: clear buffer attributes when we load a 512 character font (v2)
+
+From: Dave Airlie <airlied@redhat.com>
+
+commit 2a2483072393b27f4336ab068a1f48ca19ff1c1e upstream.
+
+When we switch from 256->512 byte font rendering mode, it means the
+current contents of the screen is being reinterpreted. The bit that holds
+the high bit of the 9-bit font, may have been previously set, and thus
+the new font misrenders.
+
+The problem case we see is grub2 writes spaces with the bit set, so it
+ends up with data like 0x820, which gets reinterpreted into 0x120 char
+which the font translates into G with a circumflex. This flashes up on
+screen at boot and is quite ugly.
+
+A current side effect of this patch though is that any rendering on the
+screen changes color to a slightly darker color, but at least the screen
+no longer corrupts.
+
+v2: as suggested by hpa, always clear the attribute space, whether we
+are are going to or from 512 chars.
+
+Signed-off-by: Dave Airlie <airlied@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/tty/vt/vt.c | 2 +-
+ drivers/video/console/vgacon.c | 22 +++++++++++++++-------
+ include/linux/vt_kern.h | 1 +
+ 3 files changed, 17 insertions(+), 8 deletions(-)
+
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -656,7 +656,7 @@ static inline void save_screen(struct vc
+ * Redrawing of screen
+ */
+
+-static void clear_buffer_attributes(struct vc_data *vc)
++void clear_buffer_attributes(struct vc_data *vc)
+ {
+ unsigned short *p = (unsigned short *)vc->vc_origin;
+ int count = vc->vc_screenbuf_size / 2;
+--- a/drivers/video/console/vgacon.c
++++ b/drivers/video/console/vgacon.c
+@@ -1064,7 +1064,7 @@ static int vgacon_do_font_op(struct vgas
+ unsigned short video_port_status = vga_video_port_reg + 6;
+ int font_select = 0x00, beg, i;
+ char *charmap;
+-
++ bool clear_attribs = false;
+ if (vga_video_type != VIDEO_TYPE_EGAM) {
+ charmap = (char *) VGA_MAP_MEM(colourmap, 0);
+ beg = 0x0e;
+@@ -1169,12 +1169,6 @@ static int vgacon_do_font_op(struct vgas
+
+ /* if 512 char mode is already enabled don't re-enable it. */
+ if ((set) && (ch512 != vga_512_chars)) {
+- /* attribute controller */
+- for (i = 0; i < MAX_NR_CONSOLES; i++) {
+- struct vc_data *c = vc_cons[i].d;
+- if (c && c->vc_sw == &vga_con)
+- c->vc_hi_font_mask = ch512 ? 0x0800 : 0;
+- }
+ vga_512_chars = ch512;
+ /* 256-char: enable intensity bit
+ 512-char: disable intensity bit */
+@@ -1185,8 +1179,22 @@ static int vgacon_do_font_op(struct vgas
+ it means, but it works, and it appears necessary */
+ inb_p(video_port_status);
+ vga_wattr(state->vgabase, VGA_AR_ENABLE_DISPLAY, 0);
++ clear_attribs = true;
+ }
+ raw_spin_unlock_irq(&vga_lock);
++
++ if (clear_attribs) {
++ for (i = 0; i < MAX_NR_CONSOLES; i++) {
++ struct vc_data *c = vc_cons[i].d;
++ if (c && c->vc_sw == &vga_con) {
++ /* force hi font mask to 0, so we always clear
++ the bit on either transition */
++ c->vc_hi_font_mask = 0x00;
++ clear_buffer_attributes(c);
++ c->vc_hi_font_mask = ch512 ? 0x0800 : 0;
++ }
++ }
++ }
+ return 0;
+ }
+
+--- a/include/linux/vt_kern.h
++++ b/include/linux/vt_kern.h
+@@ -47,6 +47,7 @@ int con_set_cmap(unsigned char __user *c
+ int con_get_cmap(unsigned char __user *cmap);
+ void scrollback(struct vc_data *vc, int lines);
+ void scrollfront(struct vc_data *vc, int lines);
++void clear_buffer_attributes(struct vc_data *vc);
+ void update_region(struct vc_data *vc, unsigned long start, int count);
+ void redraw_screen(struct vc_data *vc, int is_switch);
+ #define update_screen(x) redraw_screen(x, 0)
projects / thirdparty / kernel / stable-queue.git / commitdiff
