| /* |
| On Screen Display cx23415 Framebuffer driver |
| |
| This module presents the cx23415 OSD (onscreen display) framebuffer memory |
| as a standard Linux /dev/fb style framebuffer device. The framebuffer has |
| support for 8, 16 & 32 bpp packed pixel formats with alpha channel. In 16bpp |
| mode, there is a choice of a three color depths (12, 15 or 16 bits), but no |
| local alpha. The colorspace is selectable between rgb & yuv. |
| Depending on the TV standard configured in the ivtv module at load time, |
| the initial resolution is either 640x400 (NTSC) or 640x480 (PAL) at 8bpp. |
| Video timings are locked to ensure a vertical refresh rate of 50Hz (PAL) |
| or 59.94 (NTSC) |
| |
| Copyright (c) 2003 Matt T. Yourst <yourst@yourst.com> |
| |
| Derived from drivers/video/vesafb.c |
| Portions (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de> |
| |
| 2.6 kernel port: |
| Copyright (C) 2004 Matthias Badaire |
| |
| Copyright (C) 2004 Chris Kennedy <c@groovy.org> |
| |
| Copyright (C) 2006 Ian Armstrong <ian@iarmst.demon.co.uk> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/fb.h> |
| #include <linux/ivtvfb.h> |
| #include <linux/slab.h> |
| |
| #ifdef CONFIG_MTRR |
| #include <asm/mtrr.h> |
| #endif |
| |
| #include "ivtv-driver.h" |
| #include "ivtv-cards.h" |
| #include "ivtv-i2c.h" |
| #include "ivtv-udma.h" |
| #include "ivtv-mailbox.h" |
| |
| /* card parameters */ |
| static int ivtvfb_card_id = -1; |
| static int ivtvfb_debug = 0; |
| static int osd_laced; |
| static int osd_depth; |
| static int osd_upper; |
| static int osd_left; |
| static int osd_yres; |
| static int osd_xres; |
| |
| module_param(ivtvfb_card_id, int, 0444); |
| module_param_named(debug,ivtvfb_debug, int, 0644); |
| module_param(osd_laced, bool, 0444); |
| module_param(osd_depth, int, 0444); |
| module_param(osd_upper, int, 0444); |
| module_param(osd_left, int, 0444); |
| module_param(osd_yres, int, 0444); |
| module_param(osd_xres, int, 0444); |
| |
| MODULE_PARM_DESC(ivtvfb_card_id, |
| "Only use framebuffer of the specified ivtv card (0-31)\n" |
| "\t\t\tdefault -1: initialize all available framebuffers"); |
| |
| MODULE_PARM_DESC(debug, |
| "Debug level (bitmask). Default: errors only\n" |
| "\t\t\t(debug = 3 gives full debugging)"); |
| |
| /* Why upper, left, xres, yres, depth, laced ? To match terminology used |
| by fbset. |
| Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */ |
| |
| MODULE_PARM_DESC(osd_laced, |
| "Interlaced mode\n" |
| "\t\t\t0=off\n" |
| "\t\t\t1=on\n" |
| "\t\t\tdefault off"); |
| |
| MODULE_PARM_DESC(osd_depth, |
| "Bits per pixel - 8, 16, 32\n" |
| "\t\t\tdefault 8"); |
| |
| MODULE_PARM_DESC(osd_upper, |
| "Vertical start position\n" |
| "\t\t\tdefault 0 (Centered)"); |
| |
| MODULE_PARM_DESC(osd_left, |
| "Horizontal start position\n" |
| "\t\t\tdefault 0 (Centered)"); |
| |
| MODULE_PARM_DESC(osd_yres, |
| "Display height\n" |
| "\t\t\tdefault 480 (PAL)\n" |
| "\t\t\t 400 (NTSC)"); |
| |
| MODULE_PARM_DESC(osd_xres, |
| "Display width\n" |
| "\t\t\tdefault 640"); |
| |
| MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong"); |
| MODULE_LICENSE("GPL"); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| #define IVTVFB_DBGFLG_WARN (1 << 0) |
| #define IVTVFB_DBGFLG_INFO (1 << 1) |
| |
| #define IVTVFB_DEBUG(x, type, fmt, args...) \ |
| do { \ |
| if ((x) & ivtvfb_debug) \ |
| printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \ |
| } while (0) |
| #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args) |
| #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args) |
| |
| /* Standard kernel messages */ |
| #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args) |
| #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args) |
| #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args) |
| |
| /* --------------------------------------------------------------------- */ |
| |
| #define IVTV_OSD_MAX_WIDTH 720 |
| #define IVTV_OSD_MAX_HEIGHT 576 |
| |
| #define IVTV_OSD_BPP_8 0x00 |
| #define IVTV_OSD_BPP_16_444 0x03 |
| #define IVTV_OSD_BPP_16_555 0x02 |
| #define IVTV_OSD_BPP_16_565 0x01 |
| #define IVTV_OSD_BPP_32 0x04 |
| |
| struct osd_info { |
| /* Physical base address */ |
| unsigned long video_pbase; |
| /* Relative base address (relative to start of decoder memory) */ |
| u32 video_rbase; |
| /* Mapped base address */ |
| volatile char __iomem *video_vbase; |
| /* Buffer size */ |
| u32 video_buffer_size; |
| |
| #ifdef CONFIG_MTRR |
| /* video_base rounded down as required by hardware MTRRs */ |
| unsigned long fb_start_aligned_physaddr; |
| /* video_base rounded up as required by hardware MTRRs */ |
| unsigned long fb_end_aligned_physaddr; |
| #endif |
| |
| /* Store the buffer offset */ |
| int set_osd_coords_x; |
| int set_osd_coords_y; |
| |
| /* Current dimensions (NOT VISIBLE SIZE!) */ |
| int display_width; |
| int display_height; |
| int display_byte_stride; |
| |
| /* Current bits per pixel */ |
| int bits_per_pixel; |
| int bytes_per_pixel; |
| |
| /* Frame buffer stuff */ |
| struct fb_info ivtvfb_info; |
| struct fb_var_screeninfo ivtvfb_defined; |
| struct fb_fix_screeninfo ivtvfb_fix; |
| }; |
| |
| struct ivtv_osd_coords { |
| unsigned long offset; |
| unsigned long max_offset; |
| int pixel_stride; |
| int lines; |
| int x; |
| int y; |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| /* ivtv API calls for framebuffer related support */ |
| |
| static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase, |
| u32 *fblength) |
| { |
| u32 data[CX2341X_MBOX_MAX_DATA]; |
| int rc; |
| |
| rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0); |
| *fbbase = data[0]; |
| *fblength = data[1]; |
| return rc; |
| } |
| |
| static int ivtvfb_get_osd_coords(struct ivtv *itv, |
| struct ivtv_osd_coords *osd) |
| { |
| struct osd_info *oi = itv->osd_info; |
| u32 data[CX2341X_MBOX_MAX_DATA]; |
| |
| ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0); |
| |
| osd->offset = data[0] - oi->video_rbase; |
| osd->max_offset = oi->display_width * oi->display_height * 4; |
| osd->pixel_stride = data[1]; |
| osd->lines = data[2]; |
| osd->x = data[3]; |
| osd->y = data[4]; |
| return 0; |
| } |
| |
| static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd) |
| { |
| struct osd_info *oi = itv->osd_info; |
| |
| oi->display_width = osd->pixel_stride; |
| oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel; |
| oi->set_osd_coords_x += osd->x; |
| oi->set_osd_coords_y = osd->y; |
| |
| return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5, |
| osd->offset + oi->video_rbase, |
| osd->pixel_stride, |
| osd->lines, osd->x, osd->y); |
| } |
| |
| static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window) |
| { |
| int osd_height_limit = itv->is_50hz ? 576 : 480; |
| |
| /* Only fail if resolution too high, otherwise fudge the start coords. */ |
| if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH)) |
| return -EINVAL; |
| |
| /* Ensure we don't exceed display limits */ |
| if (ivtv_window->top + ivtv_window->height > osd_height_limit) { |
| IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n", |
| ivtv_window->top, ivtv_window->height); |
| ivtv_window->top = osd_height_limit - ivtv_window->height; |
| } |
| |
| if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) { |
| IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n", |
| ivtv_window->left, ivtv_window->width); |
| ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width; |
| } |
| |
| /* Set the OSD origin */ |
| write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04); |
| |
| /* How much to display */ |
| write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08); |
| |
| /* Pass this info back the yuv handler */ |
| itv->yuv_info.osd_vis_w = ivtv_window->width; |
| itv->yuv_info.osd_vis_h = ivtv_window->height; |
| itv->yuv_info.osd_x_offset = ivtv_window->left; |
| itv->yuv_info.osd_y_offset = ivtv_window->top; |
| |
| return 0; |
| } |
| |
| static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv, |
| unsigned long ivtv_dest_addr, void __user *userbuf, |
| int size_in_bytes) |
| { |
| DEFINE_WAIT(wait); |
| int got_sig = 0; |
| |
| mutex_lock(&itv->udma.lock); |
| /* Map User DMA */ |
| if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) { |
| mutex_unlock(&itv->udma.lock); |
| IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, " |
| "Error with get_user_pages: %d bytes, %d pages returned\n", |
| size_in_bytes, itv->udma.page_count); |
| |
| /* get_user_pages must have failed completely */ |
| return -EIO; |
| } |
| |
| IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n", |
| size_in_bytes, itv->udma.page_count); |
| |
| ivtv_udma_prepare(itv); |
| prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); |
| /* if no UDMA is pending and no UDMA is in progress, then the DMA |
| is finished */ |
| while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) || |
| test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { |
| /* don't interrupt if the DMA is in progress but break off |
| a still pending DMA. */ |
| got_sig = signal_pending(current); |
| if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags)) |
| break; |
| got_sig = 0; |
| schedule(); |
| } |
| finish_wait(&itv->dma_waitq, &wait); |
| |
| /* Unmap Last DMA Xfer */ |
| ivtv_udma_unmap(itv); |
| mutex_unlock(&itv->udma.lock); |
| if (got_sig) { |
| IVTV_DEBUG_INFO("User stopped OSD\n"); |
| return -EINTR; |
| } |
| |
| return 0; |
| } |
| |
| static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source, |
| unsigned long dest_offset, int count) |
| { |
| DEFINE_WAIT(wait); |
| struct osd_info *oi = itv->osd_info; |
| |
| /* Nothing to do */ |
| if (count == 0) { |
| IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n"); |
| return -EINVAL; |
| } |
| |
| /* Check Total FB Size */ |
| if ((dest_offset + count) > oi->video_buffer_size) { |
| IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n", |
| dest_offset + count, oi->video_buffer_size); |
| return -E2BIG; |
| } |
| |
| /* Not fatal, but will have undesirable results */ |
| if ((unsigned long)source & 3) |
| IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n", |
| (unsigned long)source); |
| |
| if (dest_offset & 3) |
| IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset); |
| |
| if (count & 3) |
| IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count); |
| |
| /* Check Source */ |
| if (!access_ok(VERIFY_READ, source + dest_offset, count)) { |
| IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n", |
| (unsigned long)source); |
| |
| IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n", |
| dest_offset, (unsigned long)source, |
| count); |
| return -EINVAL; |
| } |
| |
| /* OSD Address to send DMA to */ |
| dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase; |
| |
| /* Fill Buffers */ |
| return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count); |
| } |
| |
| static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf, |
| size_t count, loff_t *ppos) |
| { |
| unsigned long p = *ppos; |
| void *dst; |
| int err = 0; |
| int dma_err; |
| unsigned long total_size; |
| struct ivtv *itv = (struct ivtv *) info->par; |
| unsigned long dma_offset = |
| IVTV_DECODER_OFFSET + itv->osd_info->video_rbase; |
| unsigned long dma_size; |
| u16 lead = 0, tail = 0; |
| |
| if (info->state != FBINFO_STATE_RUNNING) |
| return -EPERM; |
| |
| total_size = info->screen_size; |
| |
| if (total_size == 0) |
| total_size = info->fix.smem_len; |
| |
| if (p > total_size) |
| return -EFBIG; |
| |
| if (count > total_size) { |
| err = -EFBIG; |
| count = total_size; |
| } |
| |
| if (count + p > total_size) { |
| if (!err) |
| err = -ENOSPC; |
| count = total_size - p; |
| } |
| |
| dst = (void __force *) (info->screen_base + p); |
| |
| if (info->fbops->fb_sync) |
| info->fbops->fb_sync(info); |
| |
| /* If transfer size > threshold and both src/dst |
| addresses are aligned, use DMA */ |
| if (count >= 4096 && |
| ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) { |
| /* Odd address = can't DMA. Align */ |
| if ((unsigned long)dst & 3) { |
| lead = 4 - ((unsigned long)dst & 3); |
| if (copy_from_user(dst, buf, lead)) |
| return -EFAULT; |
| buf += lead; |
| dst += lead; |
| } |
| /* DMA resolution is 32 bits */ |
| if ((count - lead) & 3) |
| tail = (count - lead) & 3; |
| /* DMA the data */ |
| dma_size = count - lead - tail; |
| dma_err = ivtvfb_prep_dec_dma_to_device(itv, |
| p + lead + dma_offset, (void __user *)buf, dma_size); |
| if (dma_err) |
| return dma_err; |
| dst += dma_size; |
| buf += dma_size; |
| /* Copy any leftover data */ |
| if (tail && copy_from_user(dst, buf, tail)) |
| return -EFAULT; |
| } else if (copy_from_user(dst, buf, count)) { |
| return -EFAULT; |
| } |
| |
| if (!err) |
| *ppos += count; |
| |
| return (err) ? err : count; |
| } |
| |
| static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
| { |
| DEFINE_WAIT(wait); |
| struct ivtv *itv = (struct ivtv *)info->par; |
| int rc = 0; |
| |
| switch (cmd) { |
| case FBIOGET_VBLANK: { |
| struct fb_vblank vblank; |
| u32 trace; |
| |
| vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT | |
| FB_VBLANK_HAVE_VSYNC; |
| trace = read_reg(0x028c0) >> 16; |
| if (itv->is_50hz && trace > 312) |
| trace -= 312; |
| else if (itv->is_60hz && trace > 262) |
| trace -= 262; |
| if (trace == 1) |
| vblank.flags |= FB_VBLANK_VSYNCING; |
| vblank.count = itv->last_vsync_field; |
| vblank.vcount = trace; |
| vblank.hcount = 0; |
| if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| case FBIO_WAITFORVSYNC: |
| prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE); |
| if (!schedule_timeout(msecs_to_jiffies(50))) |
| rc = -ETIMEDOUT; |
| finish_wait(&itv->vsync_waitq, &wait); |
| return rc; |
| |
| case IVTVFB_IOC_DMA_FRAME: { |
| struct ivtvfb_dma_frame args; |
| |
| IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n"); |
| if (copy_from_user(&args, (void __user *)arg, sizeof(args))) |
| return -EFAULT; |
| |
| return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count); |
| } |
| |
| default: |
| IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| /* Framebuffer device handling */ |
| |
| static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var) |
| { |
| struct osd_info *oi = itv->osd_info; |
| struct ivtv_osd_coords ivtv_osd; |
| struct v4l2_rect ivtv_window; |
| int osd_mode = -1; |
| |
| IVTVFB_DEBUG_INFO("ivtvfb_set_var\n"); |
| |
| /* Select color space */ |
| if (var->nonstd) /* YUV */ |
| write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00); |
| else /* RGB */ |
| write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00); |
| |
| /* Set the color mode */ |
| switch (var->bits_per_pixel) { |
| case 8: |
| osd_mode = IVTV_OSD_BPP_8; |
| break; |
| case 32: |
| osd_mode = IVTV_OSD_BPP_32; |
| break; |
| case 16: |
| switch (var->green.length) { |
| case 4: |
| osd_mode = IVTV_OSD_BPP_16_444; |
| break; |
| case 5: |
| osd_mode = IVTV_OSD_BPP_16_555; |
| break; |
| case 6: |
| osd_mode = IVTV_OSD_BPP_16_565; |
| break; |
| default: |
| IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n"); |
| } |
| break; |
| default: |
| IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n"); |
| } |
| |
| /* Set video mode. Although rare, the display can become scrambled even |
| if we don't change mode. Always 'bounce' to osd_mode via mode 0 */ |
| if (osd_mode != -1) { |
| ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0); |
| ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode); |
| } |
| |
| oi->bits_per_pixel = var->bits_per_pixel; |
| oi->bytes_per_pixel = var->bits_per_pixel / 8; |
| |
| /* Set the flicker filter */ |
| switch (var->vmode & FB_VMODE_MASK) { |
| case FB_VMODE_NONINTERLACED: /* Filter on */ |
| ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1); |
| break; |
| case FB_VMODE_INTERLACED: /* Filter off */ |
| ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0); |
| break; |
| default: |
| IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n"); |
| } |
| |
| /* Read the current osd info */ |
| ivtvfb_get_osd_coords(itv, &ivtv_osd); |
| |
| /* Now set the OSD to the size we want */ |
| ivtv_osd.pixel_stride = var->xres_virtual; |
| ivtv_osd.lines = var->yres_virtual; |
| ivtv_osd.x = 0; |
| ivtv_osd.y = 0; |
| ivtvfb_set_osd_coords(itv, &ivtv_osd); |
| |
| /* Can't seem to find the right API combo for this. |
| Use another function which does what we need through direct register access. */ |
| ivtv_window.width = var->xres; |
| ivtv_window.height = var->yres; |
| |
| /* Minimum margin cannot be 0, as X won't allow such a mode */ |
| if (!var->upper_margin) var->upper_margin++; |
| if (!var->left_margin) var->left_margin++; |
| ivtv_window.top = var->upper_margin - 1; |
| ivtv_window.left = var->left_margin - 1; |
| |
| ivtvfb_set_display_window(itv, &ivtv_window); |
| |
| /* Pass screen size back to yuv handler */ |
| itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride; |
| itv->yuv_info.osd_full_h = ivtv_osd.lines; |
| |
| /* Force update of yuv registers */ |
| itv->yuv_info.yuv_forced_update = 1; |
| |
| IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n", |
| var->xres, var->yres, |
| var->xres_virtual, var->yres_virtual, |
| var->bits_per_pixel); |
| |
| IVTVFB_DEBUG_INFO("Display position: %d, %d\n", |
| var->left_margin, var->upper_margin); |
| |
| IVTVFB_DEBUG_INFO("Display filter: %s\n", |
| (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off"); |
| IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB"); |
| |
| return 0; |
| } |
| |
| static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix) |
| { |
| struct osd_info *oi = itv->osd_info; |
| |
| IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n"); |
| memset(fix, 0, sizeof(struct fb_fix_screeninfo)); |
| strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id)); |
| fix->smem_start = oi->video_pbase; |
| fix->smem_len = oi->video_buffer_size; |
| fix->type = FB_TYPE_PACKED_PIXELS; |
| fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; |
| fix->xpanstep = 1; |
| fix->ypanstep = 1; |
| fix->ywrapstep = 0; |
| fix->line_length = oi->display_byte_stride; |
| fix->accel = FB_ACCEL_NONE; |
| return 0; |
| } |
| |
| /* Check the requested display mode, returning -EINVAL if we can't |
| handle it. */ |
| |
| static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv) |
| { |
| struct osd_info *oi = itv->osd_info; |
| int osd_height_limit; |
| u32 pixclock, hlimit, vlimit; |
| |
| IVTVFB_DEBUG_INFO("ivtvfb_check_var\n"); |
| |
| /* Set base references for mode calcs. */ |
| if (itv->is_50hz) { |
| pixclock = 84316; |
| hlimit = 776; |
| vlimit = 591; |
| osd_height_limit = 576; |
| } |
| else { |
| pixclock = 83926; |
| hlimit = 776; |
| vlimit = 495; |
| osd_height_limit = 480; |
| } |
| |
| if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) { |
| var->transp.offset = 24; |
| var->transp.length = 8; |
| var->red.offset = 16; |
| var->red.length = 8; |
| var->green.offset = 8; |
| var->green.length = 8; |
| var->blue.offset = 0; |
| var->blue.length = 8; |
| } |
| else if (var->bits_per_pixel == 16) { |
| /* To find out the true mode, check green length */ |
| switch (var->green.length) { |
| case 4: |
| var->red.offset = 8; |
| var->red.length = 4; |
| var->green.offset = 4; |
| var->green.length = 4; |
| var->blue.offset = 0; |
| var->blue.length = 4; |
| var->transp.offset = 12; |
| var->transp.length = 1; |
| break; |
| case 5: |
| var->red.offset = 10; |
| var->red.length = 5; |
| var->green.offset = 5; |
| var->green.length = 5; |
| var->blue.offset = 0; |
| var->blue.length = 5; |
| var->transp.offset = 15; |
| var->transp.length = 1; |
| break; |
| default: |
| var->red.offset = 11; |
| var->red.length = 5; |
| var->green.offset = 5; |
| var->green.length = 6; |
| var->blue.offset = 0; |
| var->blue.length = 5; |
| var->transp.offset = 0; |
| var->transp.length = 0; |
| break; |
| } |
| } |
| else { |
| IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel); |
| return -EINVAL; |
| } |
| |
| /* Check the resolution */ |
| if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) { |
| IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n", |
| var->xres, var->yres); |
| return -EINVAL; |
| } |
| |
| /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */ |
| if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) || |
| var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size || |
| var->xres_virtual < var->xres || |
| var->yres_virtual < var->yres) { |
| IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n", |
| var->xres_virtual, var->yres_virtual); |
| return -EINVAL; |
| } |
| |
| /* Some extra checks if in 8 bit mode */ |
| if (var->bits_per_pixel == 8) { |
| /* Width must be a multiple of 4 */ |
| if (var->xres & 3) { |
| IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres); |
| return -EINVAL; |
| } |
| if (var->xres_virtual & 3) { |
| IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual); |
| return -EINVAL; |
| } |
| } |
| else if (var->bits_per_pixel == 16) { |
| /* Width must be a multiple of 2 */ |
| if (var->xres & 1) { |
| IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres); |
| return -EINVAL; |
| } |
| if (var->xres_virtual & 1) { |
| IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual); |
| return -EINVAL; |
| } |
| } |
| |
| /* Now check the offsets */ |
| if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) { |
| IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n", |
| var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual); |
| return -EINVAL; |
| } |
| |
| /* Check pixel format */ |
| if (var->nonstd > 1) { |
| IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd); |
| return -EINVAL; |
| } |
| |
| /* Check video mode */ |
| if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) && |
| ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) { |
| IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK); |
| return -EINVAL; |
| } |
| |
| /* Check the left & upper margins |
| If the margins are too large, just center the screen |
| (enforcing margins causes too many problems) */ |
| |
| if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) { |
| var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2); |
| } |
| if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) { |
| var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2); |
| } |
| |
| /* Maintain overall 'size' for a constant refresh rate */ |
| var->right_margin = hlimit - var->left_margin - var->xres; |
| var->lower_margin = vlimit - var->upper_margin - var->yres; |
| |
| /* Fixed sync times */ |
| var->hsync_len = 24; |
| var->vsync_len = 2; |
| |
| /* Non-interlaced / interlaced mode is used to switch the OSD filter |
| on or off. Adjust the clock timings to maintain a constant |
| vertical refresh rate. */ |
| if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED) |
| var->pixclock = pixclock / 2; |
| else |
| var->pixclock = pixclock; |
| |
| itv->osd_rect.width = var->xres; |
| itv->osd_rect.height = var->yres; |
| |
| IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n", |
| var->xres, var->yres, |
| var->xres_virtual, var->yres_virtual, |
| var->bits_per_pixel); |
| |
| IVTVFB_DEBUG_INFO("Display position: %d, %d\n", |
| var->left_margin, var->upper_margin); |
| |
| IVTVFB_DEBUG_INFO("Display filter: %s\n", |
| (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off"); |
| IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB"); |
| return 0; |
| } |
| |
| static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| struct ivtv *itv = (struct ivtv *) info->par; |
| IVTVFB_DEBUG_INFO("ivtvfb_check_var\n"); |
| return _ivtvfb_check_var(var, itv); |
| } |
| |
| static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| u32 osd_pan_index; |
| struct ivtv *itv = (struct ivtv *) info->par; |
| |
| osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8; |
| write_reg(osd_pan_index, 0x02A0C); |
| |
| /* Pass this info back the yuv handler */ |
| itv->yuv_info.osd_x_pan = var->xoffset; |
| itv->yuv_info.osd_y_pan = var->yoffset; |
| /* Force update of yuv registers */ |
| itv->yuv_info.yuv_forced_update = 1; |
| return 0; |
| } |
| |
| static int ivtvfb_set_par(struct fb_info *info) |
| { |
| int rc = 0; |
| struct ivtv *itv = (struct ivtv *) info->par; |
| |
| IVTVFB_DEBUG_INFO("ivtvfb_set_par\n"); |
| |
| rc = ivtvfb_set_var(itv, &info->var); |
| ivtvfb_pan_display(&info->var, info); |
| ivtvfb_get_fix(itv, &info->fix); |
| return rc; |
| } |
| |
| static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| unsigned blue, unsigned transp, |
| struct fb_info *info) |
| { |
| u32 color, *palette; |
| struct ivtv *itv = (struct ivtv *)info->par; |
| |
| if (regno >= info->cmap.len) |
| return -EINVAL; |
| |
| color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8); |
| if (info->var.bits_per_pixel <= 8) { |
| write_reg(regno, 0x02a30); |
| write_reg(color, 0x02a34); |
| return 0; |
| } |
| if (regno >= 16) |
| return -EINVAL; |
| |
| palette = info->pseudo_palette; |
| if (info->var.bits_per_pixel == 16) { |
| switch (info->var.green.length) { |
| case 4: |
| color = ((red & 0xf000) >> 4) | |
| ((green & 0xf000) >> 8) | |
| ((blue & 0xf000) >> 12); |
| break; |
| case 5: |
| color = ((red & 0xf800) >> 1) | |
| ((green & 0xf800) >> 6) | |
| ((blue & 0xf800) >> 11); |
| break; |
| case 6: |
| color = (red & 0xf800 ) | |
| ((green & 0xfc00) >> 5) | |
| ((blue & 0xf800) >> 11); |
| break; |
| } |
| } |
| palette[regno] = color; |
| return 0; |
| } |
| |
| /* We don't really support blanking. All this does is enable or |
| disable the OSD. */ |
| static int ivtvfb_blank(int blank_mode, struct fb_info *info) |
| { |
| struct ivtv *itv = (struct ivtv *)info->par; |
| |
| IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode); |
| switch (blank_mode) { |
| case FB_BLANK_UNBLANK: |
| ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1); |
| ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1); |
| break; |
| case FB_BLANK_NORMAL: |
| case FB_BLANK_HSYNC_SUSPEND: |
| case FB_BLANK_VSYNC_SUSPEND: |
| ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0); |
| ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1); |
| break; |
| case FB_BLANK_POWERDOWN: |
| ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0); |
| ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0); |
| break; |
| } |
| return 0; |
| } |
| |
| static struct fb_ops ivtvfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_write = ivtvfb_write, |
| .fb_check_var = ivtvfb_check_var, |
| .fb_set_par = ivtvfb_set_par, |
| .fb_setcolreg = ivtvfb_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_cursor = NULL, |
| .fb_ioctl = ivtvfb_ioctl, |
| .fb_pan_display = ivtvfb_pan_display, |
| .fb_blank = ivtvfb_blank, |
| }; |
| |
| /* Initialization */ |
| |
| |
| /* Setup our initial video mode */ |
| static int ivtvfb_init_vidmode(struct ivtv *itv) |
| { |
| struct osd_info *oi = itv->osd_info; |
| struct v4l2_rect start_window; |
| int max_height; |
| |
| /* Color mode */ |
| |
| if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32) |
| osd_depth = 8; |
| oi->bits_per_pixel = osd_depth; |
| oi->bytes_per_pixel = oi->bits_per_pixel / 8; |
| |
| /* Horizontal size & position */ |
| |
| if (osd_xres > 720) |
| osd_xres = 720; |
| |
| /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */ |
| if (osd_depth == 8) |
| osd_xres &= ~3; |
| else if (osd_depth == 16) |
| osd_xres &= ~1; |
| |
| start_window.width = osd_xres ? osd_xres : 640; |
| |
| /* Check horizontal start (osd_left). */ |
| if (osd_left && osd_left + start_window.width > 721) { |
| IVTVFB_ERR("Invalid osd_left - assuming default\n"); |
| osd_left = 0; |
| } |
| |
| /* Hardware coords start at 0, user coords start at 1. */ |
| osd_left--; |
| |
| start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2); |
| |
| oi->display_byte_stride = |
| start_window.width * oi->bytes_per_pixel; |
| |
| /* Vertical size & position */ |
| |
| max_height = itv->is_50hz ? 576 : 480; |
| |
| if (osd_yres > max_height) |
| osd_yres = max_height; |
| |
| start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400; |
| |
| /* Check vertical start (osd_upper). */ |
| if (osd_upper + start_window.height > max_height + 1) { |
| IVTVFB_ERR("Invalid osd_upper - assuming default\n"); |
| osd_upper = 0; |
| } |
| |
| /* Hardware coords start at 0, user coords start at 1. */ |
| osd_upper--; |
| |
| start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2); |
| |
| oi->display_width = start_window.width; |
| oi->display_height = start_window.height; |
| |
| /* Generate a valid fb_var_screeninfo */ |
| |
| oi->ivtvfb_defined.xres = oi->display_width; |
| oi->ivtvfb_defined.yres = oi->display_height; |
| oi->ivtvfb_defined.xres_virtual = oi->display_width; |
| oi->ivtvfb_defined.yres_virtual = oi->display_height; |
| oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel; |
| oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED); |
| oi->ivtvfb_defined.left_margin = start_window.left + 1; |
| oi->ivtvfb_defined.upper_margin = start_window.top + 1; |
| oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE; |
| oi->ivtvfb_defined.nonstd = 0; |
| |
| /* We've filled in the most data, let the usual mode check |
| routine fill in the rest. */ |
| _ivtvfb_check_var(&oi->ivtvfb_defined, itv); |
| |
| /* Generate valid fb_fix_screeninfo */ |
| |
| ivtvfb_get_fix(itv, &oi->ivtvfb_fix); |
| |
| /* Generate valid fb_info */ |
| |
| oi->ivtvfb_info.node = -1; |
| oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT; |
| oi->ivtvfb_info.fbops = &ivtvfb_ops; |
| oi->ivtvfb_info.par = itv; |
| oi->ivtvfb_info.var = oi->ivtvfb_defined; |
| oi->ivtvfb_info.fix = oi->ivtvfb_fix; |
| oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase; |
| oi->ivtvfb_info.fbops = &ivtvfb_ops; |
| |
| /* Supply some monitor specs. Bogus values will do for now */ |
| oi->ivtvfb_info.monspecs.hfmin = 8000; |
| oi->ivtvfb_info.monspecs.hfmax = 70000; |
| oi->ivtvfb_info.monspecs.vfmin = 10; |
| oi->ivtvfb_info.monspecs.vfmax = 100; |
| |
| /* Allocate color map */ |
| if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) { |
| IVTVFB_ERR("abort, unable to alloc cmap\n"); |
| return -ENOMEM; |
| } |
| |
| /* Allocate the pseudo palette */ |
| oi->ivtvfb_info.pseudo_palette = |
| kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN); |
| |
| if (!oi->ivtvfb_info.pseudo_palette) { |
| IVTVFB_ERR("abort, unable to alloc pseudo pallete\n"); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */ |
| |
| static int ivtvfb_init_io(struct ivtv *itv) |
| { |
| struct osd_info *oi = itv->osd_info; |
| |
| mutex_lock(&itv->serialize_lock); |
| if (ivtv_init_on_first_open(itv)) { |
| mutex_unlock(&itv->serialize_lock); |
| IVTVFB_ERR("Failed to initialize ivtv\n"); |
| return -ENXIO; |
| } |
| mutex_unlock(&itv->serialize_lock); |
| |
| ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size); |
| |
| /* The osd buffer size depends on the number of video buffers allocated |
| on the PVR350 itself. For now we'll hardcode the smallest osd buffer |
| size to prevent any overlap. */ |
| oi->video_buffer_size = 1704960; |
| |
| oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase; |
| oi->video_vbase = itv->dec_mem + oi->video_rbase; |
| |
| if (!oi->video_vbase) { |
| IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n", |
| oi->video_buffer_size, oi->video_pbase); |
| return -EIO; |
| } |
| |
| IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n", |
| oi->video_pbase, oi->video_vbase, |
| oi->video_buffer_size / 1024); |
| |
| #ifdef CONFIG_MTRR |
| { |
| /* Find the largest power of two that maps the whole buffer */ |
| int size_shift = 31; |
| |
| while (!(oi->video_buffer_size & (1 << size_shift))) { |
| size_shift--; |
| } |
| size_shift++; |
| oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1); |
| oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size; |
| oi->fb_end_aligned_physaddr += (1 << size_shift) - 1; |
| oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1); |
| if (mtrr_add(oi->fb_start_aligned_physaddr, |
| oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr, |
| MTRR_TYPE_WRCOMB, 1) < 0) { |
| IVTVFB_INFO("disabled mttr\n"); |
| oi->fb_start_aligned_physaddr = 0; |
| oi->fb_end_aligned_physaddr = 0; |
| } |
| } |
| #endif |
| |
| /* Blank the entire osd. */ |
| memset_io(oi->video_vbase, 0, oi->video_buffer_size); |
| |
| return 0; |
| } |
| |
| /* Release any memory we've grabbed & remove mtrr entry */ |
| static void ivtvfb_release_buffers (struct ivtv *itv) |
| { |
| struct osd_info *oi = itv->osd_info; |
| |
| /* Release cmap */ |
| if (oi->ivtvfb_info.cmap.len) |
| fb_dealloc_cmap(&oi->ivtvfb_info.cmap); |
| |
| /* Release pseudo palette */ |
| if (oi->ivtvfb_info.pseudo_palette) |
| kfree(oi->ivtvfb_info.pseudo_palette); |
| |
| #ifdef CONFIG_MTRR |
| if (oi->fb_end_aligned_physaddr) { |
| mtrr_del(-1, oi->fb_start_aligned_physaddr, |
| oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr); |
| } |
| #endif |
| |
| kfree(oi); |
| itv->osd_info = NULL; |
| } |
| |
| /* Initialize the specified card */ |
| |
| static int ivtvfb_init_card(struct ivtv *itv) |
| { |
| int rc; |
| |
| if (itv->osd_info) { |
| IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id); |
| return -EBUSY; |
| } |
| |
| itv->osd_info = kzalloc(sizeof(struct osd_info), |
| GFP_ATOMIC|__GFP_NOWARN); |
| if (itv->osd_info == NULL) { |
| IVTVFB_ERR("Failed to allocate memory for osd_info\n"); |
| return -ENOMEM; |
| } |
| |
| /* Find & setup the OSD buffer */ |
| if ((rc = ivtvfb_init_io(itv))) |
| return rc; |
| |
| /* Set the startup video mode information */ |
| if ((rc = ivtvfb_init_vidmode(itv))) { |
| ivtvfb_release_buffers(itv); |
| return rc; |
| } |
| |
| /* Register the framebuffer */ |
| if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) { |
| ivtvfb_release_buffers(itv); |
| return -EINVAL; |
| } |
| |
| itv->osd_video_pbase = itv->osd_info->video_pbase; |
| |
| /* Set the card to the requested mode */ |
| ivtvfb_set_par(&itv->osd_info->ivtvfb_info); |
| |
| /* Set color 0 to black */ |
| write_reg(0, 0x02a30); |
| write_reg(0, 0x02a34); |
| |
| /* Enable the osd */ |
| ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info); |
| |
| /* Allocate DMA */ |
| ivtv_udma_alloc(itv); |
| return 0; |
| |
| } |
| |
| static int __init ivtvfb_callback_init(struct device *dev, void *p) |
| { |
| struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); |
| struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev); |
| |
| if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) { |
| if (ivtvfb_init_card(itv) == 0) { |
| IVTVFB_INFO("Framebuffer registered on %s\n", |
| itv->v4l2_dev.name); |
| (*(int *)p)++; |
| } |
| } |
| return 0; |
| } |
| |
| static int ivtvfb_callback_cleanup(struct device *dev, void *p) |
| { |
| struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); |
| struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev); |
| |
| if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) { |
| if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) { |
| IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", |
| itv->instance); |
| return 0; |
| } |
| IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance); |
| ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info); |
| ivtvfb_release_buffers(itv); |
| itv->osd_video_pbase = 0; |
| } |
| return 0; |
| } |
| |
| static int __init ivtvfb_init(void) |
| { |
| struct device_driver *drv; |
| int registered = 0; |
| int err; |
| |
| if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) { |
| printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n", |
| IVTV_MAX_CARDS - 1); |
| return -EINVAL; |
| } |
| |
| drv = driver_find("ivtv", &pci_bus_type); |
| err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init); |
| put_driver(drv); |
| if (!registered) { |
| printk(KERN_ERR "ivtvfb: no cards found\n"); |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| static void ivtvfb_cleanup(void) |
| { |
| struct device_driver *drv; |
| int err; |
| |
| printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n"); |
| |
| drv = driver_find("ivtv", &pci_bus_type); |
| err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup); |
| put_driver(drv); |
| } |
| |
| module_init(ivtvfb_init); |
| module_exit(ivtvfb_cleanup); |