From patchwork Thu Sep 7 08:52:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13376789 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84107EC8742 for ; Thu, 7 Sep 2023 18:27:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240121AbjIGS1X (ORCPT ); Thu, 7 Sep 2023 14:27:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229540AbjIGS1W (ORCPT ); Thu, 7 Sep 2023 14:27:22 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E72521FDE; Thu, 7 Sep 2023 11:26:57 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 970B021861; Thu, 7 Sep 2023 08:54:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1694076851; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ranEoTJ2L8KmH07t6LWvaJqG7sMRdSCAepskfveXWck=; b=uVvIec0KOevWi9QtaaRK3F3dLqrFJ/JWG/zEuZzgBqm1uVigFGHBRs+SN0+oC9+QIWaHJD HkyBxD3NqDRkZLhWoxZAsCQdeFQLhHxv9kPmZdVlMrY+ie487kMFEFJTx5nPA3eJg2NHGC LU+N9gsRZcrTOBOSrmIn6vJRhvwXle8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1694076851; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ranEoTJ2L8KmH07t6LWvaJqG7sMRdSCAepskfveXWck=; b=EEOVBmEbtMHN4AxnYrdQPpOPFkOUjaBHQRMyOXi2n1obfAZz3KN/eT0HQKhZvIfibWQngO VdWJ5O4i/dX1tPCw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 574B0138FA; Thu, 7 Sep 2023 08:54:11 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id wCNiFLOP+WT6JgAAMHmgww (envelope-from ); Thu, 07 Sep 2023 08:54:11 +0000 From: Thomas Zimmermann To: deller@gmx.de, daniel@ffwll.ch, javierm@redhat.com, sam@ravnborg.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 5/7] fbdev/core: Move logo functions into separate source file Date: Thu, 7 Sep 2023 10:52:04 +0200 Message-ID: <20230907085408.9354-6-tzimmermann@suse.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230907085408.9354-1-tzimmermann@suse.de> References: <20230907085408.9354-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Move the fbdev function for displaying boot-up logos into their own file fb_logo.c. Only build fb_logo.c if CONFIG_LOGO has been selected. No functional changes. v2: * include fb_internal.h (kernel test robot) * simplify option-parsing ifdefs * build fb_logo.o iff CONFIG_LOGO has been set Signed-off-by: Thomas Zimmermann Acked-by: Javier Martinez Canillas --- drivers/video/fbdev/core/Makefile | 2 + drivers/video/fbdev/core/fb_internal.h | 3 +- drivers/video/fbdev/core/fb_logo.c | 518 ++++++++++++++++++++++++ drivers/video/fbdev/core/fbcon.c | 2 + drivers/video/fbdev/core/fbmem.c | 519 ------------------------- 5 files changed, 524 insertions(+), 520 deletions(-) create mode 100644 drivers/video/fbdev/core/fb_logo.c diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile index edfde2948e5c..36d3156dc759 100644 --- a/drivers/video/fbdev/core/Makefile +++ b/drivers/video/fbdev/core/Makefile @@ -23,6 +23,8 @@ fb-y += fbcon_rotate.o fbcon_cw.o fbcon_ud.o \ endif endif +fb-$(CONFIG_LOGO) += fb_logo.o + obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o diff --git a/drivers/video/fbdev/core/fb_internal.h b/drivers/video/fbdev/core/fb_internal.h index 1116faefa034..613832d335fe 100644 --- a/drivers/video/fbdev/core/fb_internal.h +++ b/drivers/video/fbdev/core/fb_internal.h @@ -20,7 +20,7 @@ static inline void fb_unregister_chrdev(void) { } #endif -/* fbmem.c */ +/* fb_logo.c */ #if defined(CONFIG_LOGO) extern bool fb_center_logo; extern int fb_logo_count; @@ -37,6 +37,7 @@ static inline int fb_show_logo(struct fb_info *info, int rotate) } #endif /* CONFIG_LOGO */ +/* fbmem.c */ extern struct class *fb_class; extern struct mutex registration_lock; extern struct fb_info *registered_fb[FB_MAX]; diff --git a/drivers/video/fbdev/core/fb_logo.c b/drivers/video/fbdev/core/fb_logo.c new file mode 100644 index 000000000000..6897f7a898fc --- /dev/null +++ b/drivers/video/fbdev/core/fb_logo.c @@ -0,0 +1,518 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include + +#include "fb_internal.h" + +bool fb_center_logo __read_mostly; +int fb_logo_count __read_mostly = -1; + +static inline unsigned int safe_shift(unsigned int d, int n) +{ + return n < 0 ? d >> -n : d << n; +} + +static void fb_set_logocmap(struct fb_info *info, + const struct linux_logo *logo) +{ + struct fb_cmap palette_cmap; + u16 palette_green[16]; + u16 palette_blue[16]; + u16 palette_red[16]; + int i, j, n; + const unsigned char *clut = logo->clut; + + palette_cmap.start = 0; + palette_cmap.len = 16; + palette_cmap.red = palette_red; + palette_cmap.green = palette_green; + palette_cmap.blue = palette_blue; + palette_cmap.transp = NULL; + + for (i = 0; i < logo->clutsize; i += n) { + n = logo->clutsize - i; + /* palette_cmap provides space for only 16 colors at once */ + if (n > 16) + n = 16; + palette_cmap.start = 32 + i; + palette_cmap.len = n; + for (j = 0; j < n; ++j) { + palette_cmap.red[j] = clut[0] << 8 | clut[0]; + palette_cmap.green[j] = clut[1] << 8 | clut[1]; + palette_cmap.blue[j] = clut[2] << 8 | clut[2]; + clut += 3; + } + fb_set_cmap(&palette_cmap, info); + } +} + +static void fb_set_logo_truepalette(struct fb_info *info, + const struct linux_logo *logo, + u32 *palette) +{ + static const unsigned char mask[] = { + 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff + }; + unsigned char redmask, greenmask, bluemask; + int redshift, greenshift, blueshift; + int i; + const unsigned char *clut = logo->clut; + + /* + * We have to create a temporary palette since console palette is only + * 16 colors long. + */ + /* Bug: Doesn't obey msb_right ... (who needs that?) */ + redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8]; + greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8]; + bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8]; + redshift = info->var.red.offset - (8 - info->var.red.length); + greenshift = info->var.green.offset - (8 - info->var.green.length); + blueshift = info->var.blue.offset - (8 - info->var.blue.length); + + for (i = 0; i < logo->clutsize; i++) { + palette[i+32] = (safe_shift((clut[0] & redmask), redshift) | + safe_shift((clut[1] & greenmask), greenshift) | + safe_shift((clut[2] & bluemask), blueshift)); + clut += 3; + } +} + +static void fb_set_logo_directpalette(struct fb_info *info, + const struct linux_logo *logo, + u32 *palette) +{ + int redshift, greenshift, blueshift; + int i; + + redshift = info->var.red.offset; + greenshift = info->var.green.offset; + blueshift = info->var.blue.offset; + + for (i = 32; i < 32 + logo->clutsize; i++) + palette[i] = i << redshift | i << greenshift | i << blueshift; +} + +static void fb_set_logo(struct fb_info *info, + const struct linux_logo *logo, u8 *dst, + int depth) +{ + int i, j, k; + const u8 *src = logo->data; + u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; + u8 fg = 1, d; + + switch (fb_get_color_depth(&info->var, &info->fix)) { + case 1: + fg = 1; + break; + case 2: + fg = 3; + break; + default: + fg = 7; + break; + } + + if (info->fix.visual == FB_VISUAL_MONO01 || + info->fix.visual == FB_VISUAL_MONO10) + fg = ~((u8) (0xfff << info->var.green.length)); + + switch (depth) { + case 4: + for (i = 0; i < logo->height; i++) + for (j = 0; j < logo->width; src++) { + *dst++ = *src >> 4; + j++; + if (j < logo->width) { + *dst++ = *src & 0x0f; + j++; + } + } + break; + case 1: + for (i = 0; i < logo->height; i++) { + for (j = 0; j < logo->width; src++) { + d = *src ^ xor; + for (k = 7; k >= 0 && j < logo->width; k--) { + *dst++ = ((d >> k) & 1) ? fg : 0; + j++; + } + } + } + break; + } +} + +/* + * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors), + * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on + * the visual format and color depth of the framebuffer, the DAC, the + * pseudo_palette, and the logo data will be adjusted accordingly. + * + * Case 1 - linux_logo_clut224: + * Color exceeds the number of console colors (16), thus we set the hardware DAC + * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set. + * + * For visuals that require color info from the pseudo_palette, we also construct + * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags + * will be set. + * + * Case 2 - linux_logo_vga16: + * The number of colors just matches the console colors, thus there is no need + * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie, + * each byte contains color information for two pixels (upper and lower nibble). + * To be consistent with fb_imageblit() usage, we therefore separate the two + * nibbles into separate bytes. The "depth" flag will be set to 4. + * + * Case 3 - linux_logo_mono: + * This is similar with Case 2. Each byte contains information for 8 pixels. + * We isolate each bit and expand each into a byte. The "depth" flag will + * be set to 1. + */ +static struct logo_data { + int depth; + int needs_directpalette; + int needs_truepalette; + int needs_cmapreset; + const struct linux_logo *logo; +} fb_logo __read_mostly; + +static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) +{ + u32 size = width * height, i; + + out += size - 1; + + for (i = size; i--; ) + *out-- = *in++; +} + +static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, h = height - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * j + h - i] = *in++; +} + +static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, w = width - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * (w - j) + i] = *in++; +} + +static void fb_rotate_logo(struct fb_info *info, u8 *dst, + struct fb_image *image, int rotate) +{ + u32 tmp; + + if (rotate == FB_ROTATE_UD) { + fb_rotate_logo_ud(image->data, dst, image->width, + image->height); + image->dx = info->var.xres - image->width - image->dx; + image->dy = info->var.yres - image->height - image->dy; + } else if (rotate == FB_ROTATE_CW) { + fb_rotate_logo_cw(image->data, dst, image->width, + image->height); + swap(image->width, image->height); + tmp = image->dy; + image->dy = image->dx; + image->dx = info->var.xres - image->width - tmp; + } else if (rotate == FB_ROTATE_CCW) { + fb_rotate_logo_ccw(image->data, dst, image->width, + image->height); + swap(image->width, image->height); + tmp = image->dx; + image->dx = image->dy; + image->dy = info->var.yres - image->height - tmp; + } + + image->data = dst; +} + +static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, + int rotate, unsigned int num) +{ + unsigned int x; + + if (image->width > info->var.xres || image->height > info->var.yres) + return; + + if (rotate == FB_ROTATE_UR) { + for (x = 0; + x < num && image->dx + image->width <= info->var.xres; + x++) { + info->fbops->fb_imageblit(info, image); + image->dx += image->width + 8; + } + } else if (rotate == FB_ROTATE_UD) { + u32 dx = image->dx; + + for (x = 0; x < num && image->dx <= dx; x++) { + info->fbops->fb_imageblit(info, image); + image->dx -= image->width + 8; + } + } else if (rotate == FB_ROTATE_CW) { + for (x = 0; + x < num && image->dy + image->height <= info->var.yres; + x++) { + info->fbops->fb_imageblit(info, image); + image->dy += image->height + 8; + } + } else if (rotate == FB_ROTATE_CCW) { + u32 dy = image->dy; + + for (x = 0; x < num && image->dy <= dy; x++) { + info->fbops->fb_imageblit(info, image); + image->dy -= image->height + 8; + } + } +} + +static int fb_show_logo_line(struct fb_info *info, int rotate, + const struct linux_logo *logo, int y, + unsigned int n) +{ + u32 *palette = NULL, *saved_pseudo_palette = NULL; + unsigned char *logo_new = NULL, *logo_rotate = NULL; + struct fb_image image; + + /* Return if the frame buffer is not mapped or suspended */ + if (logo == NULL || info->state != FBINFO_STATE_RUNNING || + info->fbops->owner) + return 0; + + image.depth = 8; + image.data = logo->data; + + if (fb_logo.needs_cmapreset) + fb_set_logocmap(info, logo); + + if (fb_logo.needs_truepalette || + fb_logo.needs_directpalette) { + palette = kmalloc(256 * 4, GFP_KERNEL); + if (palette == NULL) + return 0; + + if (fb_logo.needs_truepalette) + fb_set_logo_truepalette(info, logo, palette); + else + fb_set_logo_directpalette(info, logo, palette); + + saved_pseudo_palette = info->pseudo_palette; + info->pseudo_palette = palette; + } + + if (fb_logo.depth <= 4) { + logo_new = kmalloc_array(logo->width, logo->height, + GFP_KERNEL); + if (logo_new == NULL) { + kfree(palette); + if (saved_pseudo_palette) + info->pseudo_palette = saved_pseudo_palette; + return 0; + } + image.data = logo_new; + fb_set_logo(info, logo, logo_new, fb_logo.depth); + } + + if (fb_center_logo) { + int xres = info->var.xres; + int yres = info->var.yres; + + if (rotate == FB_ROTATE_CW || rotate == FB_ROTATE_CCW) { + xres = info->var.yres; + yres = info->var.xres; + } + + while (n && (n * (logo->width + 8) - 8 > xres)) + --n; + image.dx = (xres - (n * (logo->width + 8) - 8)) / 2; + image.dy = y ?: (yres - logo->height) / 2; + } else { + image.dx = 0; + image.dy = y; + } + + image.width = logo->width; + image.height = logo->height; + + if (rotate) { + logo_rotate = kmalloc_array(logo->width, logo->height, + GFP_KERNEL); + if (logo_rotate) + fb_rotate_logo(info, logo_rotate, &image, rotate); + } + + fb_do_show_logo(info, &image, rotate, n); + + kfree(palette); + if (saved_pseudo_palette != NULL) + info->pseudo_palette = saved_pseudo_palette; + kfree(logo_new); + kfree(logo_rotate); + return image.dy + logo->height; +} + +#ifdef CONFIG_FB_LOGO_EXTRA + +#define FB_LOGO_EX_NUM_MAX 10 +static struct logo_data_extra { + const struct linux_logo *logo; + unsigned int n; +} fb_logo_ex[FB_LOGO_EX_NUM_MAX]; +static unsigned int fb_logo_ex_num; + +void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n) +{ + if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX) + return; + + fb_logo_ex[fb_logo_ex_num].logo = logo; + fb_logo_ex[fb_logo_ex_num].n = n; + fb_logo_ex_num++; +} + +static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height, + unsigned int yres) +{ + unsigned int i; + + /* FIXME: logo_ex supports only truecolor fb. */ + if (info->fix.visual != FB_VISUAL_TRUECOLOR) + fb_logo_ex_num = 0; + + for (i = 0; i < fb_logo_ex_num; i++) { + if (fb_logo_ex[i].logo->type != fb_logo.logo->type) { + fb_logo_ex[i].logo = NULL; + continue; + } + height += fb_logo_ex[i].logo->height; + if (height > yres) { + height -= fb_logo_ex[i].logo->height; + fb_logo_ex_num = i; + break; + } + } + return height; +} + +static int fb_show_extra_logos(struct fb_info *info, int y, int rotate) +{ + unsigned int i; + + for (i = 0; i < fb_logo_ex_num; i++) + y = fb_show_logo_line(info, rotate, + fb_logo_ex[i].logo, y, fb_logo_ex[i].n); + + return y; +} + +#else /* !CONFIG_FB_LOGO_EXTRA */ + +static inline int fb_prepare_extra_logos(struct fb_info *info, + unsigned int height, + unsigned int yres) +{ + return height; +} + +static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate) +{ + return y; +} + +#endif /* CONFIG_FB_LOGO_EXTRA */ + +int fb_prepare_logo(struct fb_info *info, int rotate) +{ + int depth = fb_get_color_depth(&info->var, &info->fix); + unsigned int yres; + int height; + + memset(&fb_logo, 0, sizeof(struct logo_data)); + + if (info->flags & FBINFO_MISC_TILEBLITTING || + info->fbops->owner || !fb_logo_count) + return 0; + + if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { + depth = info->var.blue.length; + if (info->var.red.length < depth) + depth = info->var.red.length; + if (info->var.green.length < depth) + depth = info->var.green.length; + } + + if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) { + /* assume console colormap */ + depth = 4; + } + + /* Return if no suitable logo was found */ + fb_logo.logo = fb_find_logo(depth); + + if (!fb_logo.logo) + return 0; + + if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) + yres = info->var.yres; + else + yres = info->var.xres; + + if (fb_logo.logo->height > yres) { + fb_logo.logo = NULL; + return 0; + } + + /* What depth we asked for might be different from what we get */ + if (fb_logo.logo->type == LINUX_LOGO_CLUT224) + fb_logo.depth = 8; + else if (fb_logo.logo->type == LINUX_LOGO_VGA16) + fb_logo.depth = 4; + else + fb_logo.depth = 1; + + + if (fb_logo.depth > 4 && depth > 4) { + switch (info->fix.visual) { + case FB_VISUAL_TRUECOLOR: + fb_logo.needs_truepalette = 1; + break; + case FB_VISUAL_DIRECTCOLOR: + fb_logo.needs_directpalette = 1; + fb_logo.needs_cmapreset = 1; + break; + case FB_VISUAL_PSEUDOCOLOR: + fb_logo.needs_cmapreset = 1; + break; + } + } + + height = fb_logo.logo->height; + if (fb_center_logo) + height += (yres - fb_logo.logo->height) / 2; + + return fb_prepare_extra_logos(info, height, yres); +} + +int fb_show_logo(struct fb_info *info, int rotate) +{ + unsigned int count; + int y; + + if (!fb_logo_count) + return 0; + + count = fb_logo_count < 0 ? num_online_cpus() : fb_logo_count; + y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, count); + y = fb_show_extra_logos(info, y, rotate); + + return y; +} diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index f157a5a1dffc..63af6ab034b5 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -472,6 +472,7 @@ static int __init fb_console_setup(char *this_opt) } #endif +#ifdef CONFIG_LOGO if (!strncmp(options, "logo-pos:", 9)) { options += 9; if (!strcmp(options, "center")) @@ -485,6 +486,7 @@ static int __init fb_console_setup(char *this_opt) fb_logo_count = simple_strtol(options, &options, 0); continue; } +#endif } return 1; } diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index ee25ac38737d..1a662a606ba6 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include #include @@ -53,10 +52,6 @@ int num_registered_fb __read_mostly; for (i = 0; i < FB_MAX; i++) \ if (!registered_fb[i]) {} else -bool fb_center_logo __read_mostly; - -int fb_logo_count __read_mostly = -1; - struct fb_info *get_fb_info(unsigned int idx) { struct fb_info *fb_info; @@ -184,520 +179,6 @@ char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size } EXPORT_SYMBOL(fb_get_buffer_offset); -#ifdef CONFIG_LOGO - -static inline unsigned int safe_shift(unsigned int d, int n) -{ - return n < 0 ? d >> -n : d << n; -} - -static void fb_set_logocmap(struct fb_info *info, - const struct linux_logo *logo) -{ - struct fb_cmap palette_cmap; - u16 palette_green[16]; - u16 palette_blue[16]; - u16 palette_red[16]; - int i, j, n; - const unsigned char *clut = logo->clut; - - palette_cmap.start = 0; - palette_cmap.len = 16; - palette_cmap.red = palette_red; - palette_cmap.green = palette_green; - palette_cmap.blue = palette_blue; - palette_cmap.transp = NULL; - - for (i = 0; i < logo->clutsize; i += n) { - n = logo->clutsize - i; - /* palette_cmap provides space for only 16 colors at once */ - if (n > 16) - n = 16; - palette_cmap.start = 32 + i; - palette_cmap.len = n; - for (j = 0; j < n; ++j) { - palette_cmap.red[j] = clut[0] << 8 | clut[0]; - palette_cmap.green[j] = clut[1] << 8 | clut[1]; - palette_cmap.blue[j] = clut[2] << 8 | clut[2]; - clut += 3; - } - fb_set_cmap(&palette_cmap, info); - } -} - -static void fb_set_logo_truepalette(struct fb_info *info, - const struct linux_logo *logo, - u32 *palette) -{ - static const unsigned char mask[] = { - 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff - }; - unsigned char redmask, greenmask, bluemask; - int redshift, greenshift, blueshift; - int i; - const unsigned char *clut = logo->clut; - - /* - * We have to create a temporary palette since console palette is only - * 16 colors long. - */ - /* Bug: Doesn't obey msb_right ... (who needs that?) */ - redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8]; - greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8]; - bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8]; - redshift = info->var.red.offset - (8 - info->var.red.length); - greenshift = info->var.green.offset - (8 - info->var.green.length); - blueshift = info->var.blue.offset - (8 - info->var.blue.length); - - for (i = 0; i < logo->clutsize; i++) { - palette[i+32] = (safe_shift((clut[0] & redmask), redshift) | - safe_shift((clut[1] & greenmask), greenshift) | - safe_shift((clut[2] & bluemask), blueshift)); - clut += 3; - } -} - -static void fb_set_logo_directpalette(struct fb_info *info, - const struct linux_logo *logo, - u32 *palette) -{ - int redshift, greenshift, blueshift; - int i; - - redshift = info->var.red.offset; - greenshift = info->var.green.offset; - blueshift = info->var.blue.offset; - - for (i = 32; i < 32 + logo->clutsize; i++) - palette[i] = i << redshift | i << greenshift | i << blueshift; -} - -static void fb_set_logo(struct fb_info *info, - const struct linux_logo *logo, u8 *dst, - int depth) -{ - int i, j, k; - const u8 *src = logo->data; - u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; - u8 fg = 1, d; - - switch (fb_get_color_depth(&info->var, &info->fix)) { - case 1: - fg = 1; - break; - case 2: - fg = 3; - break; - default: - fg = 7; - break; - } - - if (info->fix.visual == FB_VISUAL_MONO01 || - info->fix.visual == FB_VISUAL_MONO10) - fg = ~((u8) (0xfff << info->var.green.length)); - - switch (depth) { - case 4: - for (i = 0; i < logo->height; i++) - for (j = 0; j < logo->width; src++) { - *dst++ = *src >> 4; - j++; - if (j < logo->width) { - *dst++ = *src & 0x0f; - j++; - } - } - break; - case 1: - for (i = 0; i < logo->height; i++) { - for (j = 0; j < logo->width; src++) { - d = *src ^ xor; - for (k = 7; k >= 0 && j < logo->width; k--) { - *dst++ = ((d >> k) & 1) ? fg : 0; - j++; - } - } - } - break; - } -} - -/* - * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors), - * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on - * the visual format and color depth of the framebuffer, the DAC, the - * pseudo_palette, and the logo data will be adjusted accordingly. - * - * Case 1 - linux_logo_clut224: - * Color exceeds the number of console colors (16), thus we set the hardware DAC - * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set. - * - * For visuals that require color info from the pseudo_palette, we also construct - * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags - * will be set. - * - * Case 2 - linux_logo_vga16: - * The number of colors just matches the console colors, thus there is no need - * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie, - * each byte contains color information for two pixels (upper and lower nibble). - * To be consistent with fb_imageblit() usage, we therefore separate the two - * nibbles into separate bytes. The "depth" flag will be set to 4. - * - * Case 3 - linux_logo_mono: - * This is similar with Case 2. Each byte contains information for 8 pixels. - * We isolate each bit and expand each into a byte. The "depth" flag will - * be set to 1. - */ -static struct logo_data { - int depth; - int needs_directpalette; - int needs_truepalette; - int needs_cmapreset; - const struct linux_logo *logo; -} fb_logo __read_mostly; - -static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) -{ - u32 size = width * height, i; - - out += size - 1; - - for (i = size; i--; ) - *out-- = *in++; -} - -static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) -{ - int i, j, h = height - 1; - - for (i = 0; i < height; i++) - for (j = 0; j < width; j++) - out[height * j + h - i] = *in++; -} - -static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) -{ - int i, j, w = width - 1; - - for (i = 0; i < height; i++) - for (j = 0; j < width; j++) - out[height * (w - j) + i] = *in++; -} - -static void fb_rotate_logo(struct fb_info *info, u8 *dst, - struct fb_image *image, int rotate) -{ - u32 tmp; - - if (rotate == FB_ROTATE_UD) { - fb_rotate_logo_ud(image->data, dst, image->width, - image->height); - image->dx = info->var.xres - image->width - image->dx; - image->dy = info->var.yres - image->height - image->dy; - } else if (rotate == FB_ROTATE_CW) { - fb_rotate_logo_cw(image->data, dst, image->width, - image->height); - swap(image->width, image->height); - tmp = image->dy; - image->dy = image->dx; - image->dx = info->var.xres - image->width - tmp; - } else if (rotate == FB_ROTATE_CCW) { - fb_rotate_logo_ccw(image->data, dst, image->width, - image->height); - swap(image->width, image->height); - tmp = image->dx; - image->dx = image->dy; - image->dy = info->var.yres - image->height - tmp; - } - - image->data = dst; -} - -static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, - int rotate, unsigned int num) -{ - unsigned int x; - - if (image->width > info->var.xres || image->height > info->var.yres) - return; - - if (rotate == FB_ROTATE_UR) { - for (x = 0; - x < num && image->dx + image->width <= info->var.xres; - x++) { - info->fbops->fb_imageblit(info, image); - image->dx += image->width + 8; - } - } else if (rotate == FB_ROTATE_UD) { - u32 dx = image->dx; - - for (x = 0; x < num && image->dx <= dx; x++) { - info->fbops->fb_imageblit(info, image); - image->dx -= image->width + 8; - } - } else if (rotate == FB_ROTATE_CW) { - for (x = 0; - x < num && image->dy + image->height <= info->var.yres; - x++) { - info->fbops->fb_imageblit(info, image); - image->dy += image->height + 8; - } - } else if (rotate == FB_ROTATE_CCW) { - u32 dy = image->dy; - - for (x = 0; x < num && image->dy <= dy; x++) { - info->fbops->fb_imageblit(info, image); - image->dy -= image->height + 8; - } - } -} - -static int fb_show_logo_line(struct fb_info *info, int rotate, - const struct linux_logo *logo, int y, - unsigned int n) -{ - u32 *palette = NULL, *saved_pseudo_palette = NULL; - unsigned char *logo_new = NULL, *logo_rotate = NULL; - struct fb_image image; - - /* Return if the frame buffer is not mapped or suspended */ - if (logo == NULL || info->state != FBINFO_STATE_RUNNING || - info->fbops->owner) - return 0; - - image.depth = 8; - image.data = logo->data; - - if (fb_logo.needs_cmapreset) - fb_set_logocmap(info, logo); - - if (fb_logo.needs_truepalette || - fb_logo.needs_directpalette) { - palette = kmalloc(256 * 4, GFP_KERNEL); - if (palette == NULL) - return 0; - - if (fb_logo.needs_truepalette) - fb_set_logo_truepalette(info, logo, palette); - else - fb_set_logo_directpalette(info, logo, palette); - - saved_pseudo_palette = info->pseudo_palette; - info->pseudo_palette = palette; - } - - if (fb_logo.depth <= 4) { - logo_new = kmalloc_array(logo->width, logo->height, - GFP_KERNEL); - if (logo_new == NULL) { - kfree(palette); - if (saved_pseudo_palette) - info->pseudo_palette = saved_pseudo_palette; - return 0; - } - image.data = logo_new; - fb_set_logo(info, logo, logo_new, fb_logo.depth); - } - - if (fb_center_logo) { - int xres = info->var.xres; - int yres = info->var.yres; - - if (rotate == FB_ROTATE_CW || rotate == FB_ROTATE_CCW) { - xres = info->var.yres; - yres = info->var.xres; - } - - while (n && (n * (logo->width + 8) - 8 > xres)) - --n; - image.dx = (xres - (n * (logo->width + 8) - 8)) / 2; - image.dy = y ?: (yres - logo->height) / 2; - } else { - image.dx = 0; - image.dy = y; - } - - image.width = logo->width; - image.height = logo->height; - - if (rotate) { - logo_rotate = kmalloc_array(logo->width, logo->height, - GFP_KERNEL); - if (logo_rotate) - fb_rotate_logo(info, logo_rotate, &image, rotate); - } - - fb_do_show_logo(info, &image, rotate, n); - - kfree(palette); - if (saved_pseudo_palette != NULL) - info->pseudo_palette = saved_pseudo_palette; - kfree(logo_new); - kfree(logo_rotate); - return image.dy + logo->height; -} - - -#ifdef CONFIG_FB_LOGO_EXTRA - -#define FB_LOGO_EX_NUM_MAX 10 -static struct logo_data_extra { - const struct linux_logo *logo; - unsigned int n; -} fb_logo_ex[FB_LOGO_EX_NUM_MAX]; -static unsigned int fb_logo_ex_num; - -void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n) -{ - if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX) - return; - - fb_logo_ex[fb_logo_ex_num].logo = logo; - fb_logo_ex[fb_logo_ex_num].n = n; - fb_logo_ex_num++; -} - -static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height, - unsigned int yres) -{ - unsigned int i; - - /* FIXME: logo_ex supports only truecolor fb. */ - if (info->fix.visual != FB_VISUAL_TRUECOLOR) - fb_logo_ex_num = 0; - - for (i = 0; i < fb_logo_ex_num; i++) { - if (fb_logo_ex[i].logo->type != fb_logo.logo->type) { - fb_logo_ex[i].logo = NULL; - continue; - } - height += fb_logo_ex[i].logo->height; - if (height > yres) { - height -= fb_logo_ex[i].logo->height; - fb_logo_ex_num = i; - break; - } - } - return height; -} - -static int fb_show_extra_logos(struct fb_info *info, int y, int rotate) -{ - unsigned int i; - - for (i = 0; i < fb_logo_ex_num; i++) - y = fb_show_logo_line(info, rotate, - fb_logo_ex[i].logo, y, fb_logo_ex[i].n); - - return y; -} - -#else /* !CONFIG_FB_LOGO_EXTRA */ - -static inline int fb_prepare_extra_logos(struct fb_info *info, - unsigned int height, - unsigned int yres) -{ - return height; -} - -static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate) -{ - return y; -} - -#endif /* CONFIG_FB_LOGO_EXTRA */ - - -int fb_prepare_logo(struct fb_info *info, int rotate) -{ - int depth = fb_get_color_depth(&info->var, &info->fix); - unsigned int yres; - int height; - - memset(&fb_logo, 0, sizeof(struct logo_data)); - - if (info->flags & FBINFO_MISC_TILEBLITTING || - info->fbops->owner || !fb_logo_count) - return 0; - - if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { - depth = info->var.blue.length; - if (info->var.red.length < depth) - depth = info->var.red.length; - if (info->var.green.length < depth) - depth = info->var.green.length; - } - - if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) { - /* assume console colormap */ - depth = 4; - } - - /* Return if no suitable logo was found */ - fb_logo.logo = fb_find_logo(depth); - - if (!fb_logo.logo) - return 0; - - if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) - yres = info->var.yres; - else - yres = info->var.xres; - - if (fb_logo.logo->height > yres) { - fb_logo.logo = NULL; - return 0; - } - - /* What depth we asked for might be different from what we get */ - if (fb_logo.logo->type == LINUX_LOGO_CLUT224) - fb_logo.depth = 8; - else if (fb_logo.logo->type == LINUX_LOGO_VGA16) - fb_logo.depth = 4; - else - fb_logo.depth = 1; - - - if (fb_logo.depth > 4 && depth > 4) { - switch (info->fix.visual) { - case FB_VISUAL_TRUECOLOR: - fb_logo.needs_truepalette = 1; - break; - case FB_VISUAL_DIRECTCOLOR: - fb_logo.needs_directpalette = 1; - fb_logo.needs_cmapreset = 1; - break; - case FB_VISUAL_PSEUDOCOLOR: - fb_logo.needs_cmapreset = 1; - break; - } - } - - height = fb_logo.logo->height; - if (fb_center_logo) - height += (yres - fb_logo.logo->height) / 2; - - return fb_prepare_extra_logos(info, height, yres); -} - -int fb_show_logo(struct fb_info *info, int rotate) -{ - unsigned int count; - int y; - - if (!fb_logo_count) - return 0; - - count = fb_logo_count < 0 ? num_online_cpus() : fb_logo_count; - y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, count); - y = fb_show_extra_logos(info, y, rotate); - - return y; -} -#endif /* CONFIG_LOGO */ - int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var) {