alistair23-linux/drivers/staging/gma500/framebuffer.c
Alan Cox ef86de5832 staging: gma500: gtt based hardware scrolling console
Add support for GTT based scrolling. Instead of pushing bits around we simply
use the GTT to change the mappings. This provides us with a very fast way to
scroll the display providing we have enough memory to allocate on 4K line
boundaries. In practice this seems to be the case except for very big displays
such as HDMI. It works out nicely on the usual configurations are netbooks and
tablets.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-26 17:32:54 -07:00

850 lines
22 KiB
C

/**************************************************************************
* Copyright (c) 2007-2011, Intel Corporation.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
**************************************************************************/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm.h>
#include <drm/drm_crtc.h>
#include "psb_drv.h"
#include "psb_intel_reg.h"
#include "psb_intel_drv.h"
#include "framebuffer.h"
#include "gtt.h"
#include "mdfld_output.h"
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle);
static const struct drm_framebuffer_funcs psb_fb_funcs = {
.destroy = psb_user_framebuffer_destroy,
.create_handle = psb_user_framebuffer_create_handle,
};
#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
struct psb_fbdev *fbdev = info->par;
struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
uint32_t v;
if (!fb)
return -ENOMEM;
if (regno > 255)
return 1;
red = CMAP_TOHW(red, info->var.red.length);
blue = CMAP_TOHW(blue, info->var.blue.length);
green = CMAP_TOHW(green, info->var.green.length);
transp = CMAP_TOHW(transp, info->var.transp.length);
v = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset) |
(transp << info->var.transp.offset);
if (regno < 16) {
switch (fb->bits_per_pixel) {
case 16:
((uint32_t *) info->pseudo_palette)[regno] = v;
break;
case 24:
case 32:
((uint32_t *) info->pseudo_palette)[regno] = v;
break;
}
}
return 0;
}
static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct psb_fbdev *fbdev = info->par;
struct psb_framebuffer *psbfb = &fbdev->pfb;
struct drm_device *dev = psbfb->base.dev;
/*
* We have to poke our nose in here. The core fb code assumes
* panning is part of the hardware that can be invoked before
* the actual fb is mapped. In our case that isn't quite true.
*/
if (psbfb->gtt->npage)
psb_gtt_roll(dev, psbfb->gtt, var->yoffset);
return 0;
}
void psbfb_suspend(struct drm_device *dev)
{
struct drm_framebuffer *fb = 0;
struct psb_framebuffer *psbfb = to_psb_fb(fb);
console_lock();
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
struct fb_info *info = psbfb->fbdev;
fb_set_suspend(info, 1);
drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
}
mutex_unlock(&dev->mode_config.mutex);
console_unlock();
}
void psbfb_resume(struct drm_device *dev)
{
struct drm_framebuffer *fb = 0;
struct psb_framebuffer *psbfb = to_psb_fb(fb);
console_lock();
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
struct fb_info *info = psbfb->fbdev;
fb_set_suspend(info, 0);
drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
}
mutex_unlock(&dev->mode_config.mutex);
console_unlock();
drm_helper_disable_unused_functions(dev);
}
static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct psb_framebuffer *psbfb = vma->vm_private_data;
struct drm_device *dev = psbfb->base.dev;
struct drm_psb_private *dev_priv = dev->dev_private;
int page_num;
int i;
unsigned long address;
int ret;
unsigned long pfn;
/* FIXME: assumes fb at stolen base which may not be true */
unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
address = (unsigned long)vmf->virtual_address;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
for (i = 0; i < page_num; i++) {
pfn = (phys_addr >> PAGE_SHIFT);
ret = vm_insert_mixed(vma, address, pfn);
if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
break;
else if (unlikely(ret != 0)) {
ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
return ret;
}
address += PAGE_SIZE;
phys_addr += PAGE_SIZE;
}
return VM_FAULT_NOPAGE;
}
static void psbfb_vm_open(struct vm_area_struct *vma)
{
}
static void psbfb_vm_close(struct vm_area_struct *vma)
{
}
static struct vm_operations_struct psbfb_vm_ops = {
.fault = psbfb_vm_fault,
.open = psbfb_vm_open,
.close = psbfb_vm_close
};
static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct psb_fbdev *fbdev = info->par;
struct psb_framebuffer *psbfb = &fbdev->pfb;
if (vma->vm_pgoff != 0)
return -EINVAL;
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
return -EINVAL;
if (!psbfb->addr_space)
psbfb->addr_space = vma->vm_file->f_mapping;
/*
* If this is a GEM object then info->screen_base is the virtual
* kernel remapping of the object. FIXME: Review if this is
* suitable for our mmap work
*/
vma->vm_ops = &psbfb_vm_ops;
vma->vm_private_data = (void *)psbfb;
vma->vm_flags |= VM_RESERVED | VM_IO |
VM_MIXEDMAP | VM_DONTEXPAND;
return 0;
}
static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
return -ENOTTY;
}
static struct fb_ops psbfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_blank = drm_fb_helper_blank,
.fb_setcolreg = psbfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = psbfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_mmap = psbfb_mmap,
.fb_sync = psbfb_sync,
.fb_ioctl = psbfb_ioctl,
};
static struct fb_ops psbfb_roll_ops = {
.owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_blank = drm_fb_helper_blank,
.fb_setcolreg = psbfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_pan_display = psbfb_pan,
.fb_mmap = psbfb_mmap,
.fb_sync = psbfb_sync,
.fb_ioctl = psbfb_ioctl,
};
static struct fb_ops psbfb_unaccel_ops = {
.owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_blank = drm_fb_helper_blank,
.fb_setcolreg = psbfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_mmap = psbfb_mmap,
.fb_ioctl = psbfb_ioctl,
};
/**
* psb_framebuffer_init - initialize a framebuffer
* @dev: our DRM device
* @fb: framebuffer to set up
* @mode_cmd: mode description
* @gt: backing object
*
* Configure and fill in the boilerplate for our frame buffer. Return
* 0 on success or an error code if we fail.
*/
static int psb_framebuffer_init(struct drm_device *dev,
struct psb_framebuffer *fb,
struct drm_mode_fb_cmd *mode_cmd,
struct gtt_range *gt)
{
int ret;
if (mode_cmd->pitch & 63)
return -EINVAL;
switch (mode_cmd->bpp) {
case 8:
case 16:
case 24:
case 32:
break;
default:
return -EINVAL;
}
ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
if (ret) {
dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
return ret;
}
drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
fb->gtt = gt;
return 0;
}
/**
* psb_framebuffer_create - create a framebuffer backed by gt
* @dev: our DRM device
* @mode_cmd: the description of the requested mode
* @gt: the backing object
*
* Create a framebuffer object backed by the gt, and fill in the
* boilerplate required
*
* TODO: review object references
*/
static struct drm_framebuffer *psb_framebuffer_create
(struct drm_device *dev,
struct drm_mode_fb_cmd *mode_cmd,
struct gtt_range *gt)
{
struct psb_framebuffer *fb;
int ret;
fb = kzalloc(sizeof(*fb), GFP_KERNEL);
if (!fb)
return ERR_PTR(-ENOMEM);
ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
if (ret) {
kfree(fb);
return ERR_PTR(ret);
}
return &fb->base;
}
/**
* psbfb_alloc - allocate frame buffer memory
* @dev: the DRM device
* @aligned_size: space needed
* @force: fall back to GEM buffers if need be
*
* Allocate the frame buffer. In the usual case we get a GTT range that
* is stolen memory backed and life is simple. If there isn't sufficient
* stolen memory or the system has no stolen memory we allocate a range
* and back it with a GEM object.
*
* In this case the GEM object has no handle.
*/
static struct gtt_range *psbfb_alloc(struct drm_device *dev,
int aligned_size, int force)
{
struct gtt_range *backing;
/* Begin by trying to use stolen memory backing */
backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
if (backing) {
if (drm_gem_private_object_init(dev,
&backing->gem, aligned_size) == 0)
return backing;
psb_gtt_free_range(dev, backing);
}
if (!force)
return NULL;
/* Next try using GEM host memory */
backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
if (backing == NULL)
return NULL;
/* Now back it with an object */
if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
psb_gtt_free_range(dev, backing);
return NULL;
}
return backing;
}
/**
* psbfb_create - create a framebuffer
* @fbdev: the framebuffer device
* @sizes: specification of the layout
*
* Create a framebuffer to the specifications provided
*/
static int psbfb_create(struct psb_fbdev *fbdev,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = fbdev->psb_fb_helper.dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct fb_info *info;
struct drm_framebuffer *fb;
struct psb_framebuffer *psbfb = &fbdev->pfb;
struct drm_mode_fb_cmd mode_cmd;
struct device *device = &dev->pdev->dev;
int size;
int ret;
struct gtt_range *backing;
int gtt_roll = 1;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.bpp = sizes->surface_bpp;
/* No 24bit packed */
if (mode_cmd.bpp == 24)
mode_cmd.bpp = 32;
/* Acceleration via the GTT requires pitch to be 4096 byte aligned
(ie 1024 or 2048 pixels in normal use) */
mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 4096);
mode_cmd.depth = sizes->surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
/* Allocate the framebuffer in the GTT with stolen page backing */
backing = psbfb_alloc(dev, size, 0);
if (backing == NULL) {
/*
* We couldn't get the space we wanted, fall back to the
* display engine requirement instead. The HW requires
* the pitch to be 64 byte aligned
*/
gtt_roll = 0; /* Don't use GTT accelerated scrolling */
mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
mode_cmd.depth = sizes->surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
/* Allocate the framebuffer in the GTT with stolen page
backing when there is room */
backing = psbfb_alloc(dev, size, 1);
if (backing == NULL)
return -ENOMEM;
}
mutex_lock(&dev->struct_mutex);
info = framebuffer_alloc(0, device);
if (!info) {
ret = -ENOMEM;
goto out_err1;
}
info->par = fbdev;
ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
if (ret)
goto out_unref;
fb = &psbfb->base;
psbfb->fbdev = info;
fbdev->psb_fb_helper.fb = fb;
fbdev->psb_fb_helper.fbdev = info;
strcpy(info->fix.id, "psbfb");
info->flags = FBINFO_DEFAULT;
if (gtt_roll) { /* GTT rolling seems best */
info->fbops = &psbfb_roll_ops;
info->flags |= FBINFO_HWACCEL_YPAN;
}
else if (dev_priv->ops->accel_2d) /* 2D engine */
info->fbops = &psbfb_ops;
else /* Software */
info->fbops = &psbfb_unaccel_ops;
ret = fb_alloc_cmap(&info->cmap, 256, 0);
if (ret) {
ret = -ENOMEM;
goto out_unref;
}
info->fix.smem_start = dev->mode_config.fb_base;
info->fix.smem_len = size;
info->fix.ywrapstep = gtt_roll;
info->fix.ypanstep = gtt_roll;
if (backing->stolen) {
/* Accessed stolen memory directly */
info->screen_base = (char *)dev_priv->vram_addr +
backing->offset;
} else {
/* Pin the pages into the GTT and create a mapping to them */
psb_gtt_pin(backing);
info->screen_base = vm_map_ram(backing->pages, backing->npage,
-1, PAGE_KERNEL);
if (info->screen_base == NULL) {
psb_gtt_unpin(backing);
ret = -ENOMEM;
goto out_unref;
}
psbfb->vm_map = 1;
}
info->screen_size = size;
if (dev_priv->gtt.stolen_size) {
info->apertures = alloc_apertures(1);
if (!info->apertures) {
ret = -ENOMEM;
goto out_unref;
}
info->apertures->ranges[0].base = dev->mode_config.fb_base;
info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
}
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
sizes->fb_width, sizes->fb_height);
info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
info->pixmap.size = 64 * 1024;
info->pixmap.buf_align = 8;
info->pixmap.access_align = 32;
info->pixmap.flags = FB_PIXMAP_SYSTEM;
info->pixmap.scan_align = 1;
dev_info(dev->dev, "allocated %dx%d fb\n",
psbfb->base.width, psbfb->base.height);
mutex_unlock(&dev->struct_mutex);
return 0;
out_unref:
if (backing->stolen)
psb_gtt_free_range(dev, backing);
else {
if (psbfb->vm_map)
vm_unmap_ram(info->screen_base, backing->npage);
drm_gem_object_unreference(&backing->gem);
}
out_err1:
mutex_unlock(&dev->struct_mutex);
psb_gtt_free_range(dev, backing);
return ret;
}
/**
* psb_user_framebuffer_create - create framebuffer
* @dev: our DRM device
* @filp: client file
* @cmd: mode request
*
* Create a new framebuffer backed by a userspace GEM object
*/
static struct drm_framebuffer *psb_user_framebuffer_create
(struct drm_device *dev, struct drm_file *filp,
struct drm_mode_fb_cmd *cmd)
{
struct gtt_range *r;
struct drm_gem_object *obj;
/*
* Find the GEM object and thus the gtt range object that is
* to back this space
*/
obj = drm_gem_object_lookup(dev, filp, cmd->handle);
if (obj == NULL)
return ERR_PTR(-ENOENT);
/* Let the core code do all the work */
r = container_of(obj, struct gtt_range, gem);
return psb_framebuffer_create(dev, cmd, r);
}
static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
}
static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
u16 *green, u16 *blue, int regno)
{
}
static int psbfb_probe(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
int new_fb = 0;
int ret;
if (!helper->fb) {
ret = psbfb_create(psb_fbdev, sizes);
if (ret)
return ret;
new_fb = 1;
}
return new_fb;
}
struct drm_fb_helper_funcs psb_fb_helper_funcs = {
.gamma_set = psbfb_gamma_set,
.gamma_get = psbfb_gamma_get,
.fb_probe = psbfb_probe,
};
int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
{
struct fb_info *info;
struct psb_framebuffer *psbfb = &fbdev->pfb;
if (fbdev->psb_fb_helper.fbdev) {
info = fbdev->psb_fb_helper.fbdev;
/* If this is our base framebuffer then kill any virtual map
for the framebuffer layer and unpin it */
if (psbfb->vm_map) {
vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
psb_gtt_unpin(psbfb->gtt);
}
unregister_framebuffer(info);
if (info->cmap.len)
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
drm_fb_helper_fini(&fbdev->psb_fb_helper);
drm_framebuffer_cleanup(&psbfb->base);
if (psbfb->gtt)
drm_gem_object_unreference(&psbfb->gtt->gem);
return 0;
}
int psb_fbdev_init(struct drm_device *dev)
{
struct psb_fbdev *fbdev;
struct drm_psb_private *dev_priv = dev->dev_private;
fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
if (!fbdev) {
dev_err(dev->dev, "no memory\n");
return -ENOMEM;
}
dev_priv->fbdev = fbdev;
fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
INTELFB_CONN_LIMIT);
drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
return 0;
}
void psb_fbdev_fini(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
if (!dev_priv->fbdev)
return;
psb_fbdev_destroy(dev, dev_priv->fbdev);
kfree(dev_priv->fbdev);
dev_priv->fbdev = NULL;
}
static void psbfb_output_poll_changed(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
}
/**
* psb_user_framebuffer_create_handle - add hamdle to a framebuffer
* @fb: framebuffer
* @file_priv: our DRM file
* @handle: returned handle
*
* Our framebuffer object is a GTT range which also contains a GEM
* object. We need to turn it into a handle for userspace. GEM will do
* the work for us
*/
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
struct psb_framebuffer *psbfb = to_psb_fb(fb);
struct gtt_range *r = psbfb->gtt;
return drm_gem_handle_create(file_priv, &r->gem, handle);
}
/**
* psb_user_framebuffer_destroy - destruct user created fb
* @fb: framebuffer
*
* User framebuffers are backed by GEM objects so all we have to do is
* clean up a bit and drop the reference, GEM will handle the fallout
*/
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct psb_framebuffer *psbfb = to_psb_fb(fb);
struct gtt_range *r = psbfb->gtt;
struct drm_device *dev = fb->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_fbdev *fbdev = dev_priv->fbdev;
struct drm_crtc *crtc;
int reset = 0;
/* Should never get stolen memory for a user fb */
WARN_ON(r->stolen);
/* Check if we are erroneously live */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
if (crtc->fb == fb)
reset = 1;
if (reset)
/*
* Now force a sane response before we permit the DRM CRTC
* layer to do stupid things like blank the display. Instead
* we reset this framebuffer as if the user had forced a reset.
* We must do this before the cleanup so that the DRM layer
* doesn't get a chance to stick its oar in where it isn't
* wanted.
*/
drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
/* Let DRM do its clean up */
drm_framebuffer_cleanup(fb);
/* We are no longer using the resource in GEM */
drm_gem_object_unreference_unlocked(&r->gem);
kfree(fb);
}
static const struct drm_mode_config_funcs psb_mode_funcs = {
.fb_create = psb_user_framebuffer_create,
.output_poll_changed = psbfb_output_poll_changed,
};
static int psb_create_backlight_property(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct drm_property *backlight;
if (dev_priv->backlight_property)
return 0;
backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE,
"backlight", 2);
backlight->values[0] = 0;
backlight->values[1] = 100;
dev_priv->backlight_property = backlight;
return 0;
}
static void psb_setup_outputs(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct drm_connector *connector;
drm_mode_create_scaling_mode_property(dev);
psb_create_backlight_property(dev);
dev_priv->ops->output_init(dev);
list_for_each_entry(connector, &dev->mode_config.connector_list,
head) {
struct psb_intel_output *psb_intel_output =
to_psb_intel_output(connector);
struct drm_encoder *encoder = &psb_intel_output->enc;
int crtc_mask = 0, clone_mask = 0;
/* valid crtcs */
switch (psb_intel_output->type) {
case INTEL_OUTPUT_ANALOG:
crtc_mask = (1 << 0);
clone_mask = (1 << INTEL_OUTPUT_ANALOG);
break;
case INTEL_OUTPUT_SDVO:
crtc_mask = ((1 << 0) | (1 << 1));
clone_mask = (1 << INTEL_OUTPUT_SDVO);
break;
case INTEL_OUTPUT_LVDS:
if (IS_MRST(dev))
crtc_mask = (1 << 0);
else
crtc_mask = (1 << 1);
clone_mask = (1 << INTEL_OUTPUT_LVDS);
break;
case INTEL_OUTPUT_MIPI:
crtc_mask = (1 << 0);
clone_mask = (1 << INTEL_OUTPUT_MIPI);
break;
case INTEL_OUTPUT_MIPI2:
crtc_mask = (1 << 2);
clone_mask = (1 << INTEL_OUTPUT_MIPI2);
break;
case INTEL_OUTPUT_HDMI:
/* HDMI on crtc 1 for SoC devices and crtc 0 for
Cedarview. HDMI on Poulsbo is only via external
logic */
if (IS_MFLD(dev) || IS_MRST(dev))
crtc_mask = (1 << 1);
else
crtc_mask = (1 << 0); /* Cedarview */
clone_mask = (1 << INTEL_OUTPUT_HDMI);
break;
}
encoder->possible_crtcs = crtc_mask;
encoder->possible_clones =
psb_intel_connector_clones(dev, clone_mask);
}
}
void psb_modeset_init(struct drm_device *dev)
{
struct drm_psb_private *dev_priv =
(struct drm_psb_private *) dev->dev_private;
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
int i;
drm_mode_config_init(dev);
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.funcs = (void *) &psb_mode_funcs;
/* set memory base */
/* MRST and PSB should use BAR 2*/
pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
&(dev->mode_config.fb_base));
/* num pipes is 2 for PSB but 1 for Mrst */
for (i = 0; i < dev_priv->num_pipe; i++)
psb_intel_crtc_init(dev, i, mode_dev);
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
psb_setup_outputs(dev);
}
void psb_modeset_cleanup(struct drm_device *dev)
{
mutex_lock(&dev->struct_mutex);
drm_kms_helper_poll_fini(dev);
psb_fbdev_fini(dev);
drm_mode_config_cleanup(dev);
mutex_unlock(&dev->struct_mutex);
}