forked from Minki/linux
ps3fb: use fb_info.par properly
ps3fb: Use fb_info.par properly:
o Move mode-specific fields into struct ps3fb_par
o Allocate struct ps3fb_par using framebuffer_alloc()
o Protect access to ps3fb_par in ps3fb_sync() using the console semaphore
(this semaphore is already held when ps3fb_set_par() is called)
o Avoid calling ps3av_set_video_mode() if the actual video mode hasn't
changed
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geert Uytterhoeven
Linus Torvalds
parent
2ce32e15a1
commit
0333d83509
@ -119,12 +119,10 @@ struct ps3fb_priv {
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void *xdr_ea;
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size_t xdr_size;
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struct gpu_driver_info *dinfo;
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u32 res_index;
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u64 vblank_count; /* frame count */
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wait_queue_head_t wait_vsync;
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u32 num_frames; /* num of frame buffers */
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atomic_t ext_flip; /* on/off flip with vsync */
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atomic_t f_count; /* fb_open count */
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int is_blanked;
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@ -133,6 +131,13 @@ struct ps3fb_priv {
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};
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static struct ps3fb_priv ps3fb;
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struct ps3fb_par {
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u32 pseudo_palette[16];
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int mode_id, new_mode_id;
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int res_index;
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unsigned int num_frames; /* num of frame buffers */
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};
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struct ps3fb_res_table {
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u32 xres;
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u32 yres;
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@ -361,18 +366,17 @@ static unsigned int ps3fb_find_mode(const struct fb_var_screeninfo *var,
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pr_debug("ps3fb_find_mode: mode not found\n");
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return 0;
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}
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static const struct fb_videomode *ps3fb_default_mode(void)
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static const struct fb_videomode *ps3fb_default_mode(int id)
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{
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u32 mode = ps3fb_mode & PS3AV_MODE_MASK;
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u32 mode = id & PS3AV_MODE_MASK;
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u32 flags;
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if (mode < 1 || mode > 13)
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return NULL;
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flags = ps3fb_mode & ~PS3AV_MODE_MASK;
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flags = id & ~PS3AV_MODE_MASK;
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if (mode <= 10 && flags & PS3FB_FULL_MODE_BIT) {
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/* Full broadcast mode */
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@ -384,18 +388,22 @@ static const struct fb_videomode *ps3fb_default_mode(void)
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static int ps3fb_sync(struct fb_info *info, u32 frame)
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{
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int i, status;
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struct ps3fb_par *par = info->par;
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int i, status, error = 0;
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u32 xres, yres;
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u64 fb_ioif, offset;
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i = ps3fb.res_index;
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acquire_console_sem();
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i = par->res_index;
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xres = ps3fb_res[i].xres;
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yres = ps3fb_res[i].yres;
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if (frame > ps3fb.num_frames - 1) {
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if (frame > par->num_frames - 1) {
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dev_dbg(info->device, "%s: invalid frame number (%u)\n",
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__func__, frame);
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return -EINVAL;
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error = -EINVAL;
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goto out;
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}
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offset = xres * yres * BPP * frame;
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@ -428,7 +436,10 @@ static int ps3fb_sync(struct fb_info *info, u32 frame)
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"%s: lv1_gpu_context_attribute FLIP failed: %d\n",
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__func__, status);
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#endif
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return 0;
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out:
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release_console_sem();
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return error;
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}
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@ -547,6 +558,7 @@ static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
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static int ps3fb_set_par(struct fb_info *info)
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{
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struct ps3fb_par *par = info->par;
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unsigned int mode;
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int i;
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unsigned long offset;
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@ -560,7 +572,7 @@ static int ps3fb_set_par(struct fb_info *info)
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return -EINVAL;
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i = ps3fb_get_res_table(info->var.xres, info->var.yres, mode);
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ps3fb.res_index = i;
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par->res_index = i;
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offset = VFB_OFF(i);
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info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset;
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@ -568,14 +580,19 @@ static int ps3fb_set_par(struct fb_info *info)
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info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
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memset(ps3fb.xdr_ea, 0, ps3fb.xdr_size);
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ps3fb.num_frames = info->fix.smem_len/
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(ps3fb_res[i].xres*ps3fb_res[i].yres*BPP);
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par->num_frames = info->fix.smem_len/
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(ps3fb_res[i].xres*ps3fb_res[i].yres*BPP);
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/* Keep the special bits we cannot set using fb_var_screeninfo */
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ps3fb_mode = (ps3fb_mode & ~PS3AV_MODE_MASK) | mode;
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par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode;
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if (ps3av_set_video_mode(ps3fb_mode))
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return -EINVAL;
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if (par->new_mode_id != par->mode_id) {
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if (ps3av_set_video_mode(par->new_mode_id)) {
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par->new_mode_id = par->mode_id;
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return -EINVAL;
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}
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par->mode_id = par->new_mode_id;
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}
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return 0;
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}
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@ -694,7 +711,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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unsigned long arg)
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{
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void __user *argp = (void __user *)arg;
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u32 val, old_mode;
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u32 val;
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int retval = -EFAULT;
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switch (cmd) {
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@ -724,6 +741,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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case PS3FB_IOCTL_SETMODE:
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{
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struct ps3fb_par *par = info->par;
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const struct fb_videomode *mode;
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struct fb_var_screeninfo var;
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@ -737,9 +755,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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}
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dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
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retval = -EINVAL;
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old_mode = ps3fb_mode;
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ps3fb_mode = val;
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mode = ps3fb_default_mode();
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mode = ps3fb_default_mode(val);
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if (mode) {
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var = info->var;
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fb_videomode_to_var(&var, mode);
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@ -747,12 +763,11 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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info->flags |= FBINFO_MISC_USEREVENT;
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/* Force, in case only special bits changed */
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var.activate |= FB_ACTIVATE_FORCE;
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par->new_mode_id = val;
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retval = fb_set_var(info, &var);
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info->flags &= ~FBINFO_MISC_USEREVENT;
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release_console_sem();
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}
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if (retval)
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ps3fb_mode = old_mode;
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break;
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}
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@ -765,14 +780,15 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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case PS3FB_IOCTL_SCREENINFO:
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{
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struct ps3fb_par *par = info->par;
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struct ps3fb_ioctl_res res;
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int i = ps3fb.res_index;
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int i = par->res_index;
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dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
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res.xres = ps3fb_res[i].xres;
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res.yres = ps3fb_res[i].yres;
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res.xoff = ps3fb_res[i].xoff;
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res.yoff = ps3fb_res[i].yoff;
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res.num_frames = ps3fb.num_frames;
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res.num_frames = par->num_frames;
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if (!copy_to_user(argp, &res, sizeof(res)))
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retval = 0;
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break;
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@ -979,6 +995,7 @@ static int ps3fb_set_sync(struct device *dev)
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static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
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{
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struct fb_info *info;
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struct ps3fb_par *par;
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int retval = -ENOMEM;
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u32 xres, yres;
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u64 ddr_lpar = 0;
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@ -987,7 +1004,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
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u64 lpar_reports = 0;
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u64 lpar_reports_size = 0;
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u64 xdr_lpar;
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int status;
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int status, res_index;
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unsigned long offset;
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struct task_struct *task;
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@ -1004,15 +1021,14 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
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if (ps3fb_mode > 0 &&
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!ps3av_video_mode2res(ps3fb_mode, &xres, &yres)) {
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ps3fb.res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode);
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dev_dbg(&dev->core, "res_index:%d\n", ps3fb.res_index);
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res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode);
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dev_dbg(&dev->core, "res_index:%d\n", res_index);
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} else
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ps3fb.res_index = GPU_RES_INDEX;
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res_index = GPU_RES_INDEX;
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atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
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atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
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init_waitqueue_head(&ps3fb.wait_vsync);
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ps3fb.num_frames = 1;
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ps3fb_set_sync(&dev->core);
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@ -1062,19 +1078,24 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
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if (retval)
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goto err_free_irq;
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info = framebuffer_alloc(sizeof(u32) * 16, &dev->core);
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info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
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if (!info)
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goto err_free_irq;
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offset = VFB_OFF(ps3fb.res_index);
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par = info->par;
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par->mode_id = ~ps3fb_mode; /* != ps3fb_mode, to trigger change */
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par->new_mode_id = ps3fb_mode;
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par->res_index = res_index;
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par->num_frames = 1;
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offset = VFB_OFF(res_index);
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info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
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info->fbops = &ps3fb_ops;
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info->fix = ps3fb_fix;
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info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset;
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info->fix.smem_len = ps3fb.xdr_size - offset;
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info->pseudo_palette = info->par;
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info->par = NULL;
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info->pseudo_palette = par->pseudo_palette;
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info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST;
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retval = fb_alloc_cmap(&info->cmap, 256, 0);
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@ -1082,7 +1103,8 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
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goto err_framebuffer_release;
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if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
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ARRAY_SIZE(ps3fb_modedb), ps3fb_default_mode(), 32)) {
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ARRAY_SIZE(ps3fb_modedb),
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ps3fb_default_mode(par->new_mode_id), 32)) {
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retval = -EINVAL;
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goto err_fb_dealloc;
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}
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