diff options
Diffstat (limited to 'drivers/gpu/drm/udl')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_main.c | 128 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_modeset.c | 49 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_transfer.c | 46 |
5 files changed, 97 insertions, 150 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 5703277c6f52..91effdcefb6d 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -21,8 +21,14 @@ static int udl_usb_suspend(struct usb_interface *interface, pm_message_t message) { struct drm_device *dev = usb_get_intfdata(interface); + int ret; - return drm_mode_config_helper_suspend(dev); + ret = drm_mode_config_helper_suspend(dev); + if (ret) + return ret; + + udl_sync_pending_urbs(dev); + return 0; } static int udl_usb_resume(struct usb_interface *interface) @@ -32,6 +38,16 @@ static int udl_usb_resume(struct usb_interface *interface) return drm_mode_config_helper_resume(dev); } +static int udl_usb_reset_resume(struct usb_interface *interface) +{ + struct drm_device *dev = usb_get_intfdata(interface); + struct udl_device *udl = to_udl(dev); + + udl_select_std_channel(udl); + + return drm_mode_config_helper_resume(dev); +} + /* * FIXME: Dma-buf sharing requires DMA support by the importing device. * This function is a workaround to make USB devices work as well. @@ -140,6 +156,7 @@ static struct usb_driver udl_driver = { .disconnect = udl_usb_disconnect, .suspend = udl_usb_suspend, .resume = udl_usb_resume, + .reset_resume = udl_usb_reset_resume, .id_table = id_table, }; module_usb_driver(udl_driver); diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index cc16a13316e4..b4cc7cc568c7 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -34,14 +34,13 @@ struct udl_device; struct urb_node { struct list_head entry; struct udl_device *dev; - struct delayed_work release_urb_work; struct urb *urb; }; struct urb_list { struct list_head list; spinlock_t lock; - struct semaphore limit_sem; + wait_queue_head_t sleep; int available; int count; size_t size; @@ -78,6 +77,7 @@ struct drm_connector *udl_connector_init(struct drm_device *dev); struct urb *udl_get_urb(struct drm_device *dev); int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len); +void udl_sync_pending_urbs(struct drm_device *dev); void udl_urb_completion(struct urb *urb); int udl_init(struct udl_device *udl); @@ -87,6 +87,7 @@ int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, u32 byte_offset, u32 device_byte_offset, u32 byte_width); int udl_drop_usb(struct drm_device *dev); +int udl_select_std_channel(struct udl_device *udl); #define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */ #define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */ diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 853f147036f6..061cb88c08a2 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -20,11 +20,10 @@ #define NR_USB_REQUEST_CHANNEL 0x12 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) -#define WRITES_IN_FLIGHT (4) +#define WRITES_IN_FLIGHT (20) #define MAX_VENDOR_DESCRIPTOR_SIZE 256 -#define GET_URB_TIMEOUT HZ -#define FREE_URB_TIMEOUT (HZ*2) +static struct urb *udl_get_urb_locked(struct udl_device *udl, long timeout); static int udl_parse_vendor_descriptor(struct udl_device *udl) { @@ -95,7 +94,7 @@ success: /* * Need to ensure a channel is selected before submitting URBs */ -static int udl_select_std_channel(struct udl_device *udl) +int udl_select_std_channel(struct udl_device *udl) { static const u8 set_def_chn[] = {0x57, 0xCD, 0xDC, 0xA7, 0x1C, 0x88, 0x5E, 0x15, @@ -119,14 +118,6 @@ static int udl_select_std_channel(struct udl_device *udl) return ret < 0 ? ret : 0; } -static void udl_release_urb_work(struct work_struct *work) -{ - struct urb_node *unode = container_of(work, struct urb_node, - release_urb_work.work); - - up(&unode->dev->urbs.limit_sem); -} - void udl_urb_completion(struct urb *urb) { struct urb_node *unode = urb->context; @@ -137,6 +128,7 @@ void udl_urb_completion(struct urb *urb) if (urb->status) { if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || + urb->status == -EPROTO || urb->status == -ESHUTDOWN)) { DRM_ERROR("%s - nonzero write bulk status received: %d\n", __func__, urb->status); @@ -150,49 +142,34 @@ void udl_urb_completion(struct urb *urb) udl->urbs.available++; spin_unlock_irqrestore(&udl->urbs.lock, flags); -#if 0 - /* - * When using fb_defio, we deadlock if up() is called - * while another is waiting. So queue to another process. - */ - if (fb_defio) - schedule_delayed_work(&unode->release_urb_work, 0); - else -#endif - up(&udl->urbs.limit_sem); + wake_up(&udl->urbs.sleep); } static void udl_free_urb_list(struct drm_device *dev) { struct udl_device *udl = to_udl(dev); - int count = udl->urbs.count; - struct list_head *node; struct urb_node *unode; struct urb *urb; DRM_DEBUG("Waiting for completes and freeing all render urbs\n"); /* keep waiting and freeing, until we've got 'em all */ - while (count--) { - down(&udl->urbs.limit_sem); - + while (udl->urbs.count) { spin_lock_irq(&udl->urbs.lock); - - node = udl->urbs.list.next; /* have reserved one with sem */ - list_del_init(node); - + urb = udl_get_urb_locked(udl, MAX_SCHEDULE_TIMEOUT); + udl->urbs.count--; spin_unlock_irq(&udl->urbs.lock); - - unode = list_entry(node, struct urb_node, entry); - urb = unode->urb; - + if (WARN_ON(!urb)) + break; + unode = urb->context; /* Free each separately allocated piece */ usb_free_coherent(urb->dev, udl->urbs.size, urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); - kfree(node); + kfree(unode); } - udl->urbs.count = 0; + + wake_up_all(&udl->urbs.sleep); } static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size) @@ -205,24 +182,20 @@ static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size) struct usb_device *udev = udl_to_usb_device(udl); spin_lock_init(&udl->urbs.lock); - -retry: - udl->urbs.size = size; INIT_LIST_HEAD(&udl->urbs.list); - - sema_init(&udl->urbs.limit_sem, 0); + init_waitqueue_head(&udl->urbs.sleep); udl->urbs.count = 0; udl->urbs.available = 0; +retry: + udl->urbs.size = size; + while (udl->urbs.count * size < wanted_size) { unode = kzalloc(sizeof(struct urb_node), GFP_KERNEL); if (!unode) break; unode->dev = udl; - INIT_DELAYED_WORK(&unode->release_urb_work, - udl_release_urb_work); - urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { kfree(unode); @@ -250,7 +223,6 @@ retry: list_add_tail(&unode->entry, &udl->urbs.list); - up(&udl->urbs.limit_sem); udl->urbs.count++; udl->urbs.available++; } @@ -260,35 +232,41 @@ retry: return udl->urbs.count; } -struct urb *udl_get_urb(struct drm_device *dev) +static struct urb *udl_get_urb_locked(struct udl_device *udl, long timeout) { - struct udl_device *udl = to_udl(dev); - int ret = 0; - struct list_head *entry; struct urb_node *unode; - struct urb *urb = NULL; + + assert_spin_locked(&udl->urbs.lock); /* Wait for an in-flight buffer to complete and get re-queued */ - ret = down_timeout(&udl->urbs.limit_sem, GET_URB_TIMEOUT); - if (ret) { - DRM_INFO("wait for urb interrupted: %x available: %d\n", - ret, udl->urbs.available); - goto error; + if (!wait_event_lock_irq_timeout(udl->urbs.sleep, + !udl->urbs.count || + !list_empty(&udl->urbs.list), + udl->urbs.lock, timeout)) { + DRM_INFO("wait for urb interrupted: available: %d\n", + udl->urbs.available); + return NULL; } - spin_lock_irq(&udl->urbs.lock); + if (!udl->urbs.count) + return NULL; - BUG_ON(list_empty(&udl->urbs.list)); /* reserved one with limit_sem */ - entry = udl->urbs.list.next; - list_del_init(entry); + unode = list_first_entry(&udl->urbs.list, struct urb_node, entry); + list_del_init(&unode->entry); udl->urbs.available--; - spin_unlock_irq(&udl->urbs.lock); + return unode ? unode->urb : NULL; +} - unode = list_entry(entry, struct urb_node, entry); - urb = unode->urb; +#define GET_URB_TIMEOUT HZ +struct urb *udl_get_urb(struct drm_device *dev) +{ + struct udl_device *udl = to_udl(dev); + struct urb *urb; -error: + spin_lock_irq(&udl->urbs.lock); + urb = udl_get_urb_locked(udl, GET_URB_TIMEOUT); + spin_unlock_irq(&udl->urbs.lock); return urb; } @@ -297,10 +275,13 @@ int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len) struct udl_device *udl = to_udl(dev); int ret; - BUG_ON(len > udl->urbs.size); - + if (WARN_ON(len > udl->urbs.size)) { + ret = -EINVAL; + goto error; + } urb->transfer_buffer_length = len; /* set to actual payload len */ ret = usb_submit_urb(urb, GFP_ATOMIC); + error: if (ret) { udl_urb_completion(urb); /* because no one else will */ DRM_ERROR("usb_submit_urb error %x\n", ret); @@ -308,6 +289,21 @@ int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len) return ret; } +/* wait until all pending URBs have been processed */ +void udl_sync_pending_urbs(struct drm_device *dev) +{ + struct udl_device *udl = to_udl(dev); + + spin_lock_irq(&udl->urbs.lock); + /* 2 seconds as a sane timeout */ + if (!wait_event_lock_irq_timeout(udl->urbs.sleep, + udl->urbs.available == udl->urbs.count, + udl->urbs.lock, + msecs_to_jiffies(2000))) + drm_err(dev, "Timeout for syncing pending URBs\n"); + spin_unlock_irq(&udl->urbs.lock); +} + int udl_init(struct udl_device *udl) { struct drm_device *dev = &udl->drm; diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c index e67c40a48fb4..ec6876f449f3 100644 --- a/drivers/gpu/drm/udl/udl_modeset.c +++ b/drivers/gpu/drm/udl/udl_modeset.c @@ -242,38 +242,15 @@ static long udl_log_cpp(unsigned int cpp) return __ffs(cpp); } -static int udl_aligned_damage_clip(struct drm_rect *clip, int x, int y, - int width, int height) -{ - int x1, x2; - - if (WARN_ON_ONCE(x < 0) || - WARN_ON_ONCE(y < 0) || - WARN_ON_ONCE(width < 0) || - WARN_ON_ONCE(height < 0)) - return -EINVAL; - - x1 = ALIGN_DOWN(x, sizeof(unsigned long)); - x2 = ALIGN(width + (x - x1), sizeof(unsigned long)) + x1; - - clip->x1 = x1; - clip->y1 = y; - clip->x2 = x2; - clip->y2 = y + height; - - return 0; -} - static int udl_handle_damage(struct drm_framebuffer *fb, const struct iosys_map *map, - int x, int y, int width, int height) + const struct drm_rect *clip) { struct drm_device *dev = fb->dev; void *vaddr = map->vaddr; /* TODO: Use mapping abstraction properly */ int i, ret; char *cmd; struct urb *urb; - struct drm_rect clip; int log_bpp; ret = udl_log_cpp(fb->format->cpp[0]); @@ -281,12 +258,6 @@ static int udl_handle_damage(struct drm_framebuffer *fb, return ret; log_bpp = ret; - ret = udl_aligned_damage_clip(&clip, x, y, width, height); - if (ret) - return ret; - else if ((clip.x2 > fb->width) || (clip.y2 > fb->height)) - return -EINVAL; - ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE); if (ret) return ret; @@ -298,11 +269,11 @@ static int udl_handle_damage(struct drm_framebuffer *fb, } cmd = urb->transfer_buffer; - for (i = clip.y1; i < clip.y2; i++) { + for (i = clip->y1; i < clip->y2; i++) { const int line_offset = fb->pitches[0] * i; - const int byte_offset = line_offset + (clip.x1 << log_bpp); - const int dev_byte_offset = (fb->width * i + clip.x1) << log_bpp; - const int byte_width = (clip.x2 - clip.x1) << log_bpp; + const int byte_offset = line_offset + (clip->x1 << log_bpp); + const int dev_byte_offset = (fb->width * i + clip->x1) << log_bpp; + const int byte_width = drm_rect_width(clip) << log_bpp; ret = udl_render_hline(dev, log_bpp, &urb, (char *)vaddr, &cmd, byte_offset, dev_byte_offset, byte_width); @@ -355,6 +326,7 @@ udl_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, struct udl_device *udl = to_udl(dev); struct drm_display_mode *mode = &crtc_state->mode; struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state); + struct drm_rect clip = DRM_RECT_INIT(0, 0, fb->width, fb->height); char *buf; char *wrptr; int color_depth = UDL_COLOR_DEPTH_16BPP; @@ -380,10 +352,7 @@ udl_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, udl->mode_buf_len = wrptr - buf; - udl_handle_damage(fb, &shadow_plane_state->data[0], 0, 0, fb->width, fb->height); - - if (!crtc_state->mode_changed) - return; + udl_handle_damage(fb, &shadow_plane_state->data[0], &clip); /* enable display */ udl_crtc_write_mode_to_hw(crtc); @@ -423,8 +392,7 @@ udl_simple_display_pipe_update(struct drm_simple_display_pipe *pipe, return; if (drm_atomic_helper_damage_merged(old_plane_state, state, &rect)) - udl_handle_damage(fb, &shadow_plane_state->data[0], rect.x1, rect.y1, - rect.x2 - rect.x1, rect.y2 - rect.y1); + udl_handle_damage(fb, &shadow_plane_state->data[0], &rect); } static const struct drm_simple_display_pipe_funcs udl_simple_display_pipe_funcs = { @@ -479,6 +447,7 @@ int udl_modeset_init(struct drm_device *dev) format_count, NULL, connector); if (ret) return ret; + drm_plane_enable_fb_damage_clips(&udl->display_pipe.plane); drm_mode_config_reset(dev); diff --git a/drivers/gpu/drm/udl/udl_transfer.c b/drivers/gpu/drm/udl/udl_transfer.c index 971927669d6b..b57844632dbd 100644 --- a/drivers/gpu/drm/udl/udl_transfer.c +++ b/drivers/gpu/drm/udl/udl_transfer.c @@ -25,46 +25,6 @@ #define MIN_RAW_PIX_BYTES 2 #define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES) -/* - * Trims identical data from front and back of line - * Sets new front buffer address and width - * And returns byte count of identical pixels - * Assumes CPU natural alignment (unsigned long) - * for back and front buffer ptrs and width - */ -#if 0 -static int udl_trim_hline(const u8 *bback, const u8 **bfront, int *width_bytes) -{ - int j, k; - const unsigned long *back = (const unsigned long *) bback; - const unsigned long *front = (const unsigned long *) *bfront; - const int width = *width_bytes / sizeof(unsigned long); - int identical = width; - int start = width; - int end = width; - - for (j = 0; j < width; j++) { - if (back[j] != front[j]) { - start = j; - break; - } - } - - for (k = width - 1; k > j; k--) { - if (back[k] != front[k]) { - end = k+1; - break; - } - } - - identical = start + (width - end); - *bfront = (u8 *) &front[start]; - *width_bytes = (end - start) * sizeof(unsigned long); - - return identical * sizeof(unsigned long); -} -#endif - static inline u16 pixel32_to_be16(const uint32_t pixel) { return (((pixel >> 3) & 0x001f) | @@ -220,7 +180,11 @@ int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, u8 *cmd = *urb_buf_ptr; u8 *cmd_end = (u8 *) urb->transfer_buffer + urb->transfer_buffer_length; - BUG_ON(!(log_bpp == 1 || log_bpp == 2)); + if (WARN_ON(!(log_bpp == 1 || log_bpp == 2))) { + /* need to finish URB at error from this function */ + udl_urb_completion(urb); + return -EINVAL; + } line_start = (u8 *) (front + byte_offset); next_pixel = line_start; |