forked from luck/tmp_suning_uos_patched
172e91f535
Signed-off-by: Pavel Roskin <proski@gnu.org> [clemens@ladisch.de: merged into drm_fb_helper] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
1025 lines
26 KiB
C
1025 lines
26 KiB
C
/*
|
|
* Copyright (c) 2006-2009 Red Hat Inc.
|
|
* Copyright (c) 2006-2008 Intel Corporation
|
|
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
|
|
*
|
|
* DRM framebuffer helper functions
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
* that the name of the copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The copyright holders make no representations
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
* is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
* OF THIS SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Dave Airlie <airlied@linux.ie>
|
|
* Jesse Barnes <jesse.barnes@intel.com>
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/sysrq.h>
|
|
#include <linux/fb.h>
|
|
#include "drmP.h"
|
|
#include "drm_crtc.h"
|
|
#include "drm_fb_helper.h"
|
|
#include "drm_crtc_helper.h"
|
|
|
|
MODULE_AUTHOR("David Airlie, Jesse Barnes");
|
|
MODULE_DESCRIPTION("DRM KMS helper");
|
|
MODULE_LICENSE("GPL and additional rights");
|
|
|
|
static LIST_HEAD(kernel_fb_helper_list);
|
|
|
|
int drm_fb_helper_add_connector(struct drm_connector *connector)
|
|
{
|
|
connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
|
|
if (!connector->fb_helper_private)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_add_connector);
|
|
|
|
/**
|
|
* drm_fb_helper_connector_parse_command_line - parse command line for connector
|
|
* @connector - connector to parse line for
|
|
* @mode_option - per connector mode option
|
|
*
|
|
* This parses the connector specific then generic command lines for
|
|
* modes and options to configure the connector.
|
|
*
|
|
* This uses the same parameters as the fb modedb.c, except for extra
|
|
* <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
|
|
*
|
|
* enable/enable Digital/disable bit at the end
|
|
*/
|
|
static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector,
|
|
const char *mode_option)
|
|
{
|
|
const char *name;
|
|
unsigned int namelen;
|
|
int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
|
|
unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0;
|
|
int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
|
|
int i;
|
|
enum drm_connector_force force = DRM_FORCE_UNSPECIFIED;
|
|
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
|
|
struct drm_fb_helper_cmdline_mode *cmdline_mode;
|
|
|
|
if (!fb_help_conn)
|
|
return false;
|
|
|
|
cmdline_mode = &fb_help_conn->cmdline_mode;
|
|
if (!mode_option)
|
|
mode_option = fb_mode_option;
|
|
|
|
if (!mode_option) {
|
|
cmdline_mode->specified = false;
|
|
return false;
|
|
}
|
|
|
|
name = mode_option;
|
|
namelen = strlen(name);
|
|
for (i = namelen-1; i >= 0; i--) {
|
|
switch (name[i]) {
|
|
case '@':
|
|
namelen = i;
|
|
if (!refresh_specified && !bpp_specified &&
|
|
!yres_specified) {
|
|
refresh = simple_strtol(&name[i+1], NULL, 10);
|
|
refresh_specified = 1;
|
|
if (cvt || rb)
|
|
cvt = 0;
|
|
} else
|
|
goto done;
|
|
break;
|
|
case '-':
|
|
namelen = i;
|
|
if (!bpp_specified && !yres_specified) {
|
|
bpp = simple_strtol(&name[i+1], NULL, 10);
|
|
bpp_specified = 1;
|
|
if (cvt || rb)
|
|
cvt = 0;
|
|
} else
|
|
goto done;
|
|
break;
|
|
case 'x':
|
|
if (!yres_specified) {
|
|
yres = simple_strtol(&name[i+1], NULL, 10);
|
|
yres_specified = 1;
|
|
} else
|
|
goto done;
|
|
case '0' ... '9':
|
|
break;
|
|
case 'M':
|
|
if (!yres_specified)
|
|
cvt = 1;
|
|
break;
|
|
case 'R':
|
|
if (!cvt)
|
|
rb = 1;
|
|
break;
|
|
case 'm':
|
|
if (!cvt)
|
|
margins = 1;
|
|
break;
|
|
case 'i':
|
|
if (!cvt)
|
|
interlace = 1;
|
|
break;
|
|
case 'e':
|
|
force = DRM_FORCE_ON;
|
|
break;
|
|
case 'D':
|
|
if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) &&
|
|
(connector->connector_type != DRM_MODE_CONNECTOR_HDMIB))
|
|
force = DRM_FORCE_ON;
|
|
else
|
|
force = DRM_FORCE_ON_DIGITAL;
|
|
break;
|
|
case 'd':
|
|
force = DRM_FORCE_OFF;
|
|
break;
|
|
default:
|
|
goto done;
|
|
}
|
|
}
|
|
if (i < 0 && yres_specified) {
|
|
xres = simple_strtol(name, NULL, 10);
|
|
res_specified = 1;
|
|
}
|
|
done:
|
|
|
|
DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
|
|
drm_get_connector_name(connector), xres, yres,
|
|
(refresh) ? refresh : 60, (rb) ? " reduced blanking" :
|
|
"", (margins) ? " with margins" : "", (interlace) ?
|
|
" interlaced" : "");
|
|
|
|
if (force) {
|
|
const char *s;
|
|
switch (force) {
|
|
case DRM_FORCE_OFF: s = "OFF"; break;
|
|
case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break;
|
|
default:
|
|
case DRM_FORCE_ON: s = "ON"; break;
|
|
}
|
|
|
|
DRM_INFO("forcing %s connector %s\n",
|
|
drm_get_connector_name(connector), s);
|
|
connector->force = force;
|
|
}
|
|
|
|
if (res_specified) {
|
|
cmdline_mode->specified = true;
|
|
cmdline_mode->xres = xres;
|
|
cmdline_mode->yres = yres;
|
|
}
|
|
|
|
if (refresh_specified) {
|
|
cmdline_mode->refresh_specified = true;
|
|
cmdline_mode->refresh = refresh;
|
|
}
|
|
|
|
if (bpp_specified) {
|
|
cmdline_mode->bpp_specified = true;
|
|
cmdline_mode->bpp = bpp;
|
|
}
|
|
cmdline_mode->rb = rb ? true : false;
|
|
cmdline_mode->cvt = cvt ? true : false;
|
|
cmdline_mode->interlace = interlace ? true : false;
|
|
|
|
return true;
|
|
}
|
|
|
|
int drm_fb_helper_parse_command_line(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
char *option = NULL;
|
|
|
|
/* do something on return - turn off connector maybe */
|
|
if (fb_get_options(drm_get_connector_name(connector), &option))
|
|
continue;
|
|
|
|
drm_fb_helper_connector_parse_command_line(connector, option);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool drm_fb_helper_force_kernel_mode(void)
|
|
{
|
|
int i = 0;
|
|
bool ret, error = false;
|
|
struct drm_fb_helper *helper;
|
|
|
|
if (list_empty(&kernel_fb_helper_list))
|
|
return false;
|
|
|
|
list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
|
|
for (i = 0; i < helper->crtc_count; i++) {
|
|
struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
|
|
ret = drm_crtc_helper_set_config(mode_set);
|
|
if (ret)
|
|
error = true;
|
|
}
|
|
}
|
|
return error;
|
|
}
|
|
|
|
int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed,
|
|
void *panic_str)
|
|
{
|
|
DRM_ERROR("panic occurred, switching back to text console\n");
|
|
return drm_fb_helper_force_kernel_mode();
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_panic);
|
|
|
|
static struct notifier_block paniced = {
|
|
.notifier_call = drm_fb_helper_panic,
|
|
};
|
|
|
|
/**
|
|
* drm_fb_helper_restore - restore the framebuffer console (kernel) config
|
|
*
|
|
* Restore's the kernel's fbcon mode, used for lastclose & panic paths.
|
|
*/
|
|
void drm_fb_helper_restore(void)
|
|
{
|
|
bool ret;
|
|
ret = drm_fb_helper_force_kernel_mode();
|
|
if (ret == true)
|
|
DRM_ERROR("Failed to restore crtc configuration\n");
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_restore);
|
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
|
static void drm_fb_helper_restore_work_fn(struct work_struct *ignored)
|
|
{
|
|
drm_fb_helper_restore();
|
|
}
|
|
static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn);
|
|
|
|
static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3)
|
|
{
|
|
schedule_work(&drm_fb_helper_restore_work);
|
|
}
|
|
|
|
static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = {
|
|
.handler = drm_fb_helper_sysrq,
|
|
.help_msg = "force-fb(V)",
|
|
.action_msg = "Restore framebuffer console",
|
|
};
|
|
#endif
|
|
|
|
static void drm_fb_helper_on(struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_crtc *crtc;
|
|
struct drm_encoder *encoder;
|
|
int i;
|
|
|
|
/*
|
|
* For each CRTC in this fb, turn the crtc on then,
|
|
* find all associated encoders and turn them on.
|
|
*/
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs =
|
|
crtc->helper_private;
|
|
|
|
/* Only mess with CRTCs in this fb */
|
|
if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
|
|
!crtc->enabled)
|
|
continue;
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
/* Found a CRTC on this fb, now find encoders */
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
if (encoder->crtc == crtc) {
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_crtc *crtc;
|
|
struct drm_encoder *encoder;
|
|
int i;
|
|
|
|
/*
|
|
* For each CRTC in this fb, find all associated encoders
|
|
* and turn them off, then turn off the CRTC.
|
|
*/
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs =
|
|
crtc->helper_private;
|
|
|
|
/* Only mess with CRTCs in this fb */
|
|
if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
|
|
!crtc->enabled)
|
|
continue;
|
|
|
|
/* Found a CRTC on this fb, now find encoders */
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
if (encoder->crtc == crtc) {
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
encoder_funcs->dpms(encoder, dpms_mode);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
}
|
|
}
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
}
|
|
}
|
|
}
|
|
|
|
int drm_fb_helper_blank(int blank, struct fb_info *info)
|
|
{
|
|
switch (blank) {
|
|
/* Display: On; HSync: On, VSync: On */
|
|
case FB_BLANK_UNBLANK:
|
|
drm_fb_helper_on(info);
|
|
break;
|
|
/* Display: Off; HSync: On, VSync: On */
|
|
case FB_BLANK_NORMAL:
|
|
drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
|
|
break;
|
|
/* Display: Off; HSync: Off, VSync: On */
|
|
case FB_BLANK_HSYNC_SUSPEND:
|
|
drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
|
|
break;
|
|
/* Display: Off; HSync: On, VSync: Off */
|
|
case FB_BLANK_VSYNC_SUSPEND:
|
|
drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND);
|
|
break;
|
|
/* Display: Off; HSync: Off, VSync: Off */
|
|
case FB_BLANK_POWERDOWN:
|
|
drm_fb_helper_off(info, DRM_MODE_DPMS_OFF);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_blank);
|
|
|
|
static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < helper->crtc_count; i++)
|
|
kfree(helper->crtc_info[i].mode_set.connectors);
|
|
kfree(helper->crtc_info);
|
|
}
|
|
|
|
int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count)
|
|
{
|
|
struct drm_device *dev = helper->dev;
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
|
|
if (!helper->crtc_info)
|
|
return -ENOMEM;
|
|
|
|
helper->crtc_count = crtc_count;
|
|
|
|
for (i = 0; i < crtc_count; i++) {
|
|
helper->crtc_info[i].mode_set.connectors =
|
|
kcalloc(max_conn_count,
|
|
sizeof(struct drm_connector *),
|
|
GFP_KERNEL);
|
|
|
|
if (!helper->crtc_info[i].mode_set.connectors) {
|
|
ret = -ENOMEM;
|
|
goto out_free;
|
|
}
|
|
helper->crtc_info[i].mode_set.num_connectors = 0;
|
|
}
|
|
|
|
i = 0;
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
helper->crtc_info[i].crtc_id = crtc->base.id;
|
|
helper->crtc_info[i].mode_set.crtc = crtc;
|
|
i++;
|
|
}
|
|
helper->conn_limit = max_conn_count;
|
|
return 0;
|
|
out_free:
|
|
drm_fb_helper_crtc_free(helper);
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
|
|
|
|
static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
|
|
u16 blue, u16 regno, struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
int pindex;
|
|
|
|
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
|
|
u32 *palette;
|
|
u32 value;
|
|
/* place color in psuedopalette */
|
|
if (regno > 16)
|
|
return -EINVAL;
|
|
palette = (u32 *)info->pseudo_palette;
|
|
red >>= (16 - info->var.red.length);
|
|
green >>= (16 - info->var.green.length);
|
|
blue >>= (16 - info->var.blue.length);
|
|
value = (red << info->var.red.offset) |
|
|
(green << info->var.green.offset) |
|
|
(blue << info->var.blue.offset);
|
|
palette[regno] = value;
|
|
return 0;
|
|
}
|
|
|
|
pindex = regno;
|
|
|
|
if (fb->bits_per_pixel == 16) {
|
|
pindex = regno << 3;
|
|
|
|
if (fb->depth == 16 && regno > 63)
|
|
return -EINVAL;
|
|
if (fb->depth == 15 && regno > 31)
|
|
return -EINVAL;
|
|
|
|
if (fb->depth == 16) {
|
|
u16 r, g, b;
|
|
int i;
|
|
if (regno < 32) {
|
|
for (i = 0; i < 8; i++)
|
|
fb_helper->funcs->gamma_set(crtc, red,
|
|
green, blue, pindex + i);
|
|
}
|
|
|
|
fb_helper->funcs->gamma_get(crtc, &r,
|
|
&g, &b,
|
|
pindex >> 1);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
fb_helper->funcs->gamma_set(crtc, r,
|
|
green, b,
|
|
(pindex >> 1) + i);
|
|
}
|
|
}
|
|
|
|
if (fb->depth != 16)
|
|
fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
|
|
return 0;
|
|
}
|
|
|
|
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
u16 *red, *green, *blue, *transp;
|
|
struct drm_crtc *crtc;
|
|
int i, rc = 0;
|
|
int start;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
red = cmap->red;
|
|
green = cmap->green;
|
|
blue = cmap->blue;
|
|
transp = cmap->transp;
|
|
start = cmap->start;
|
|
|
|
for (i = 0; i < cmap->len; i++) {
|
|
u16 hred, hgreen, hblue, htransp = 0xffff;
|
|
|
|
hred = *red++;
|
|
hgreen = *green++;
|
|
hblue = *blue++;
|
|
|
|
if (transp)
|
|
htransp = *transp++;
|
|
|
|
rc = setcolreg(crtc, hred, hgreen, hblue, start++, info);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
crtc_funcs->load_lut(crtc);
|
|
}
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_setcmap);
|
|
|
|
int drm_fb_helper_setcolreg(unsigned regno,
|
|
unsigned red,
|
|
unsigned green,
|
|
unsigned blue,
|
|
unsigned transp,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_crtc *crtc;
|
|
int i;
|
|
int ret;
|
|
|
|
if (regno > 255)
|
|
return 1;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
ret = setcolreg(crtc, red, green, blue, regno, info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
crtc_funcs->load_lut(crtc);
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_setcolreg);
|
|
|
|
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
int depth;
|
|
|
|
if (var->pixclock != 0)
|
|
return -EINVAL;
|
|
|
|
/* Need to resize the fb object !!! */
|
|
if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) {
|
|
DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb "
|
|
"object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel,
|
|
fb->width, fb->height, fb->bits_per_pixel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 16:
|
|
depth = (var->green.length == 6) ? 16 : 15;
|
|
break;
|
|
case 32:
|
|
depth = (var->transp.length > 0) ? 32 : 24;
|
|
break;
|
|
default:
|
|
depth = var->bits_per_pixel;
|
|
break;
|
|
}
|
|
|
|
switch (depth) {
|
|
case 8:
|
|
var->red.offset = 0;
|
|
var->green.offset = 0;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 15:
|
|
var->red.offset = 10;
|
|
var->green.offset = 5;
|
|
var->blue.offset = 0;
|
|
var->red.length = 5;
|
|
var->green.length = 5;
|
|
var->blue.length = 5;
|
|
var->transp.length = 1;
|
|
var->transp.offset = 15;
|
|
break;
|
|
case 16:
|
|
var->red.offset = 11;
|
|
var->green.offset = 5;
|
|
var->blue.offset = 0;
|
|
var->red.length = 5;
|
|
var->green.length = 6;
|
|
var->blue.length = 5;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 24:
|
|
var->red.offset = 16;
|
|
var->green.offset = 8;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 32:
|
|
var->red.offset = 16;
|
|
var->green.offset = 8;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 8;
|
|
var->transp.offset = 24;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_check_var);
|
|
|
|
/* this will let fbcon do the mode init */
|
|
int drm_fb_helper_set_par(struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct drm_crtc *crtc;
|
|
int ret;
|
|
int i;
|
|
|
|
if (var->pixclock != 0) {
|
|
DRM_ERROR("PIXEL CLOCK SET\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) {
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_set_par);
|
|
|
|
int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_mode_set *modeset;
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
modeset = &fb_helper->crtc_info[i].mode_set;
|
|
|
|
modeset->x = var->xoffset;
|
|
modeset->y = var->yoffset;
|
|
|
|
if (modeset->num_connectors) {
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
ret = crtc->funcs->set_config(modeset);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
if (!ret) {
|
|
info->var.xoffset = var->xoffset;
|
|
info->var.yoffset = var->yoffset;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_pan_display);
|
|
|
|
int drm_fb_helper_single_fb_probe(struct drm_device *dev,
|
|
int preferred_bpp,
|
|
int (*fb_create)(struct drm_device *dev,
|
|
uint32_t fb_width,
|
|
uint32_t fb_height,
|
|
uint32_t surface_width,
|
|
uint32_t surface_height,
|
|
uint32_t surface_depth,
|
|
uint32_t surface_bpp,
|
|
struct drm_framebuffer **fb_ptr))
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector *connector;
|
|
unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1;
|
|
unsigned int surface_width = 0, surface_height = 0;
|
|
int new_fb = 0;
|
|
int crtc_count = 0;
|
|
int ret, i, conn_count = 0;
|
|
struct fb_info *info;
|
|
struct drm_framebuffer *fb;
|
|
struct drm_mode_set *modeset = NULL;
|
|
struct drm_fb_helper *fb_helper;
|
|
uint32_t surface_depth = 24, surface_bpp = 32;
|
|
|
|
/* if driver picks 8 or 16 by default use that
|
|
for both depth/bpp */
|
|
if (preferred_bpp != surface_bpp) {
|
|
surface_depth = surface_bpp = preferred_bpp;
|
|
}
|
|
/* first up get a count of crtcs now in use and new min/maxes width/heights */
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
|
|
|
|
struct drm_fb_helper_cmdline_mode *cmdline_mode;
|
|
|
|
if (!fb_help_conn)
|
|
continue;
|
|
|
|
cmdline_mode = &fb_help_conn->cmdline_mode;
|
|
|
|
if (cmdline_mode->bpp_specified) {
|
|
switch (cmdline_mode->bpp) {
|
|
case 8:
|
|
surface_depth = surface_bpp = 8;
|
|
break;
|
|
case 15:
|
|
surface_depth = 15;
|
|
surface_bpp = 16;
|
|
break;
|
|
case 16:
|
|
surface_depth = surface_bpp = 16;
|
|
break;
|
|
case 24:
|
|
surface_depth = surface_bpp = 24;
|
|
break;
|
|
case 32:
|
|
surface_depth = 24;
|
|
surface_bpp = 32;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
if (drm_helper_crtc_in_use(crtc)) {
|
|
if (crtc->desired_mode) {
|
|
if (crtc->desired_mode->hdisplay < fb_width)
|
|
fb_width = crtc->desired_mode->hdisplay;
|
|
|
|
if (crtc->desired_mode->vdisplay < fb_height)
|
|
fb_height = crtc->desired_mode->vdisplay;
|
|
|
|
if (crtc->desired_mode->hdisplay > surface_width)
|
|
surface_width = crtc->desired_mode->hdisplay;
|
|
|
|
if (crtc->desired_mode->vdisplay > surface_height)
|
|
surface_height = crtc->desired_mode->vdisplay;
|
|
}
|
|
crtc_count++;
|
|
}
|
|
}
|
|
|
|
if (crtc_count == 0 || fb_width == -1 || fb_height == -1) {
|
|
/* hmm everyone went away - assume VGA cable just fell out
|
|
and will come back later. */
|
|
return 0;
|
|
}
|
|
|
|
/* do we have an fb already? */
|
|
if (list_empty(&dev->mode_config.fb_kernel_list)) {
|
|
ret = (*fb_create)(dev, fb_width, fb_height, surface_width,
|
|
surface_height, surface_depth, surface_bpp,
|
|
&fb);
|
|
if (ret)
|
|
return -EINVAL;
|
|
new_fb = 1;
|
|
} else {
|
|
fb = list_first_entry(&dev->mode_config.fb_kernel_list,
|
|
struct drm_framebuffer, filp_head);
|
|
|
|
/* if someone hotplugs something bigger than we have already allocated, we are pwned.
|
|
As really we can't resize an fbdev that is in the wild currently due to fbdev
|
|
not really being designed for the lower layers moving stuff around under it.
|
|
- so in the grand style of things - punt. */
|
|
if ((fb->width < surface_width) ||
|
|
(fb->height < surface_height)) {
|
|
DRM_ERROR("Framebuffer not large enough to scale console onto.\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
info = fb->fbdev;
|
|
fb_helper = info->par;
|
|
|
|
crtc_count = 0;
|
|
/* okay we need to setup new connector sets in the crtcs */
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
modeset = &fb_helper->crtc_info[crtc_count].mode_set;
|
|
modeset->fb = fb;
|
|
conn_count = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
if (connector->encoder)
|
|
if (connector->encoder->crtc == modeset->crtc) {
|
|
modeset->connectors[conn_count] = connector;
|
|
conn_count++;
|
|
if (conn_count > fb_helper->conn_limit)
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
for (i = conn_count; i < fb_helper->conn_limit; i++)
|
|
modeset->connectors[i] = NULL;
|
|
|
|
modeset->crtc = crtc;
|
|
crtc_count++;
|
|
|
|
modeset->num_connectors = conn_count;
|
|
if (modeset->crtc->desired_mode) {
|
|
if (modeset->mode)
|
|
drm_mode_destroy(dev, modeset->mode);
|
|
modeset->mode = drm_mode_duplicate(dev,
|
|
modeset->crtc->desired_mode);
|
|
}
|
|
}
|
|
fb_helper->crtc_count = crtc_count;
|
|
fb_helper->fb = fb;
|
|
|
|
if (new_fb) {
|
|
info->var.pixclock = 0;
|
|
ret = fb_alloc_cmap(&info->cmap, modeset->crtc->gamma_size, 0);
|
|
if (ret)
|
|
return ret;
|
|
if (register_framebuffer(info) < 0) {
|
|
fb_dealloc_cmap(&info->cmap);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
drm_fb_helper_set_par(info);
|
|
}
|
|
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
|
|
info->fix.id);
|
|
|
|
/* Switch back to kernel console on panic */
|
|
/* multi card linked list maybe */
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
|
printk(KERN_INFO "registered panic notifier\n");
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
&paniced);
|
|
register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
}
|
|
list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_single_fb_probe);
|
|
|
|
void drm_fb_helper_free(struct drm_fb_helper *helper)
|
|
{
|
|
list_del(&helper->kernel_fb_list);
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
|
printk(KERN_INFO "unregistered panic notifier\n");
|
|
atomic_notifier_chain_unregister(&panic_notifier_list,
|
|
&paniced);
|
|
unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
}
|
|
drm_fb_helper_crtc_free(helper);
|
|
fb_dealloc_cmap(&helper->fb->fbdev->cmap);
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_free);
|
|
|
|
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
|
|
uint32_t depth)
|
|
{
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
|
|
FB_VISUAL_TRUECOLOR;
|
|
info->fix.type_aux = 0;
|
|
info->fix.xpanstep = 1; /* doing it in hw */
|
|
info->fix.ypanstep = 1; /* doing it in hw */
|
|
info->fix.ywrapstep = 0;
|
|
info->fix.accel = FB_ACCEL_NONE;
|
|
info->fix.type_aux = 0;
|
|
|
|
info->fix.line_length = pitch;
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_fix);
|
|
|
|
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb,
|
|
uint32_t fb_width, uint32_t fb_height)
|
|
{
|
|
info->pseudo_palette = fb->pseudo_palette;
|
|
info->var.xres_virtual = fb->width;
|
|
info->var.yres_virtual = fb->height;
|
|
info->var.bits_per_pixel = fb->bits_per_pixel;
|
|
info->var.xoffset = 0;
|
|
info->var.yoffset = 0;
|
|
info->var.activate = FB_ACTIVATE_NOW;
|
|
info->var.height = -1;
|
|
info->var.width = -1;
|
|
|
|
switch (fb->depth) {
|
|
case 8:
|
|
info->var.red.offset = 0;
|
|
info->var.green.offset = 0;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8; /* 8bit DAC */
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 0;
|
|
info->var.transp.length = 0;
|
|
break;
|
|
case 15:
|
|
info->var.red.offset = 10;
|
|
info->var.green.offset = 5;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 5;
|
|
info->var.green.length = 5;
|
|
info->var.blue.length = 5;
|
|
info->var.transp.offset = 15;
|
|
info->var.transp.length = 1;
|
|
break;
|
|
case 16:
|
|
info->var.red.offset = 11;
|
|
info->var.green.offset = 5;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 5;
|
|
info->var.green.length = 6;
|
|
info->var.blue.length = 5;
|
|
info->var.transp.offset = 0;
|
|
break;
|
|
case 24:
|
|
info->var.red.offset = 16;
|
|
info->var.green.offset = 8;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8;
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 0;
|
|
info->var.transp.length = 0;
|
|
break;
|
|
case 32:
|
|
info->var.red.offset = 16;
|
|
info->var.green.offset = 8;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8;
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 24;
|
|
info->var.transp.length = 8;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
info->var.xres = fb_width;
|
|
info->var.yres = fb_height;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_var);
|