--- /dev/null
+/*
+ * linux/drivers/video/omap2/omapfb-main.c
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+ *
+ * Some code and ideas taken from drivers/video/omap/ driver
+ * by Imre Deak.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/dma-mapping.h>
+#include <linux/vmalloc.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/omapfb.h>
+
+#include <video/omapdss.h>
+#include <video/omapvrfb.h>
+
+#include "omapfb.h"
+
+#define MODULE_NAME "omapfb"
+
+#define OMAPFB_PLANE_XRES_MIN 8
+#define OMAPFB_PLANE_YRES_MIN 8
+
+static char *def_mode;
+static char *def_vram;
+static bool def_vrfb;
+static int def_rotate;
+static bool def_mirror;
+static bool auto_update;
+static unsigned int auto_update_freq;
+module_param(auto_update, bool, 0);
+module_param(auto_update_freq, uint, 0644);
+
+#ifdef DEBUG
+bool omapfb_debug;
+module_param_named(debug, omapfb_debug, bool, 0644);
+static bool omapfb_test_pattern;
+module_param_named(test, omapfb_test_pattern, bool, 0644);
+#endif
+
+static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
+static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
+ struct omap_dss_device *dssdev);
+
+#ifdef DEBUG
+static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
+{
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ void __iomem *addr = fbi->screen_base;
+ const unsigned bytespp = var->bits_per_pixel >> 3;
+ const unsigned line_len = fix->line_length / bytespp;
+
+ int r = (color >> 16) & 0xff;
+ int g = (color >> 8) & 0xff;
+ int b = (color >> 0) & 0xff;
+
+ if (var->bits_per_pixel == 16) {
+ u16 __iomem *p = (u16 __iomem *)addr;
+ p += y * line_len + x;
+
+ r = r * 32 / 256;
+ g = g * 64 / 256;
+ b = b * 32 / 256;
+
+ __raw_writew((r << 11) | (g << 5) | (b << 0), p);
+ } else if (var->bits_per_pixel == 24) {
+ u8 __iomem *p = (u8 __iomem *)addr;
+ p += (y * line_len + x) * 3;
+
+ __raw_writeb(b, p + 0);
+ __raw_writeb(g, p + 1);
+ __raw_writeb(r, p + 2);
+ } else if (var->bits_per_pixel == 32) {
+ u32 __iomem *p = (u32 __iomem *)addr;
+ p += y * line_len + x;
+ __raw_writel(color, p);
+ }
+}
+
+static void fill_fb(struct fb_info *fbi)
+{
+ struct fb_var_screeninfo *var = &fbi->var;
+ const short w = var->xres_virtual;
+ const short h = var->yres_virtual;
+ void __iomem *addr = fbi->screen_base;
+ int y, x;
+
+ if (!addr)
+ return;
+
+ DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
+
+ for (y = 0; y < h; y++) {
+ for (x = 0; x < w; x++) {
+ if (x < 20 && y < 20)
+ draw_pixel(fbi, x, y, 0xffffff);
+ else if (x < 20 && (y > 20 && y < h - 20))
+ draw_pixel(fbi, x, y, 0xff);
+ else if (y < 20 && (x > 20 && x < w - 20))
+ draw_pixel(fbi, x, y, 0xff00);
+ else if (x > w - 20 && (y > 20 && y < h - 20))
+ draw_pixel(fbi, x, y, 0xff0000);
+ else if (y > h - 20 && (x > 20 && x < w - 20))
+ draw_pixel(fbi, x, y, 0xffff00);
+ else if (x == 20 || x == w - 20 ||
+ y == 20 || y == h - 20)
+ draw_pixel(fbi, x, y, 0xffffff);
+ else if (x == y || w - x == h - y)
+ draw_pixel(fbi, x, y, 0xff00ff);
+ else if (w - x == y || x == h - y)
+ draw_pixel(fbi, x, y, 0x00ffff);
+ else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
+ int t = x * 3 / w;
+ unsigned r = 0, g = 0, b = 0;
+ unsigned c;
+ if (var->bits_per_pixel == 16) {
+ if (t == 0)
+ b = (y % 32) * 256 / 32;
+ else if (t == 1)
+ g = (y % 64) * 256 / 64;
+ else if (t == 2)
+ r = (y % 32) * 256 / 32;
+ } else {
+ if (t == 0)
+ b = (y % 256);
+ else if (t == 1)
+ g = (y % 256);
+ else if (t == 2)
+ r = (y % 256);
+ }
+ c = (r << 16) | (g << 8) | (b << 0);
+ draw_pixel(fbi, x, y, c);
+ } else {
+ draw_pixel(fbi, x, y, 0);
+ }
+ }
+ }
+}
+#endif
+
+static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
+{
+ const struct vrfb *vrfb = &ofbi->region->vrfb;
+ unsigned offset;
+
+ switch (rot) {
+ case FB_ROTATE_UR:
+ offset = 0;
+ break;
+ case FB_ROTATE_CW:
+ offset = vrfb->yoffset;
+ break;
+ case FB_ROTATE_UD:
+ offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
+ break;
+ case FB_ROTATE_CCW:
+ offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
+ break;
+ default:
+ BUG();
+ return 0;
+ }
+
+ offset *= vrfb->bytespp;
+
+ return offset;
+}
+
+static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
+{
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ return ofbi->region->vrfb.paddr[rot]
+ + omapfb_get_vrfb_offset(ofbi, rot);
+ } else {
+ return ofbi->region->paddr;
+ }
+}
+
+static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
+{
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ return ofbi->region->vrfb.paddr[0];
+ else
+ return ofbi->region->paddr;
+}
+
+static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
+{
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ return ofbi->region->vrfb.vaddr[0];
+ else
+ return ofbi->region->vaddr;
+}
+
+static struct omapfb_colormode omapfb_colormodes[] = {
+ {
+ .dssmode = OMAP_DSS_COLOR_UYVY,
+ .bits_per_pixel = 16,
+ .nonstd = OMAPFB_COLOR_YUV422,
+ }, {
+ .dssmode = OMAP_DSS_COLOR_YUV2,
+ .bits_per_pixel = 16,
+ .nonstd = OMAPFB_COLOR_YUY422,
+ }, {
+ .dssmode = OMAP_DSS_COLOR_ARGB16,
+ .bits_per_pixel = 16,
+ .red = { .length = 4, .offset = 8, .msb_right = 0 },
+ .green = { .length = 4, .offset = 4, .msb_right = 0 },
+ .blue = { .length = 4, .offset = 0, .msb_right = 0 },
+ .transp = { .length = 4, .offset = 12, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_RGB16,
+ .bits_per_pixel = 16,
+ .red = { .length = 5, .offset = 11, .msb_right = 0 },
+ .green = { .length = 6, .offset = 5, .msb_right = 0 },
+ .blue = { .length = 5, .offset = 0, .msb_right = 0 },
+ .transp = { .length = 0, .offset = 0, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_RGB24P,
+ .bits_per_pixel = 24,
+ .red = { .length = 8, .offset = 16, .msb_right = 0 },
+ .green = { .length = 8, .offset = 8, .msb_right = 0 },
+ .blue = { .length = 8, .offset = 0, .msb_right = 0 },
+ .transp = { .length = 0, .offset = 0, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_RGB24U,
+ .bits_per_pixel = 32,
+ .red = { .length = 8, .offset = 16, .msb_right = 0 },
+ .green = { .length = 8, .offset = 8, .msb_right = 0 },
+ .blue = { .length = 8, .offset = 0, .msb_right = 0 },
+ .transp = { .length = 0, .offset = 0, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_ARGB32,
+ .bits_per_pixel = 32,
+ .red = { .length = 8, .offset = 16, .msb_right = 0 },
+ .green = { .length = 8, .offset = 8, .msb_right = 0 },
+ .blue = { .length = 8, .offset = 0, .msb_right = 0 },
+ .transp = { .length = 8, .offset = 24, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_RGBA32,
+ .bits_per_pixel = 32,
+ .red = { .length = 8, .offset = 24, .msb_right = 0 },
+ .green = { .length = 8, .offset = 16, .msb_right = 0 },
+ .blue = { .length = 8, .offset = 8, .msb_right = 0 },
+ .transp = { .length = 8, .offset = 0, .msb_right = 0 },
+ }, {
+ .dssmode = OMAP_DSS_COLOR_RGBX32,
+ .bits_per_pixel = 32,
+ .red = { .length = 8, .offset = 24, .msb_right = 0 },
+ .green = { .length = 8, .offset = 16, .msb_right = 0 },
+ .blue = { .length = 8, .offset = 8, .msb_right = 0 },
+ .transp = { .length = 0, .offset = 0, .msb_right = 0 },
+ },
+};
+
+static bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
+{
+ return f1->length == f2->length &&
+ f1->offset == f2->offset &&
+ f1->msb_right == f2->msb_right;
+}
+
+static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
+ struct omapfb_colormode *color)
+{
+ if (var->bits_per_pixel == 0 ||
+ var->red.length == 0 ||
+ var->blue.length == 0 ||
+ var->green.length == 0)
+ return 0;
+
+ return var->bits_per_pixel == color->bits_per_pixel &&
+ cmp_component(&var->red, &color->red) &&
+ cmp_component(&var->green, &color->green) &&
+ cmp_component(&var->blue, &color->blue) &&
+ cmp_component(&var->transp, &color->transp);
+}
+
+static void assign_colormode_to_var(struct fb_var_screeninfo *var,
+ struct omapfb_colormode *color)
+{
+ var->bits_per_pixel = color->bits_per_pixel;
+ var->nonstd = color->nonstd;
+ var->red = color->red;
+ var->green = color->green;
+ var->blue = color->blue;
+ var->transp = color->transp;
+}
+
+static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
+ enum omap_color_mode *mode)
+{
+ enum omap_color_mode dssmode;
+ int i;
+
+ /* first match with nonstd field */
+ if (var->nonstd) {
+ for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
+ struct omapfb_colormode *m = &omapfb_colormodes[i];
+ if (var->nonstd == m->nonstd) {
+ assign_colormode_to_var(var, m);
+ *mode = m->dssmode;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+ }
+
+ /* then try exact match of bpp and colors */
+ for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
+ struct omapfb_colormode *m = &omapfb_colormodes[i];
+ if (cmp_var_to_colormode(var, m)) {
+ assign_colormode_to_var(var, m);
+ *mode = m->dssmode;
+ return 0;
+ }
+ }
+
+ /* match with bpp if user has not filled color fields
+ * properly */
+ switch (var->bits_per_pixel) {
+ case 1:
+ dssmode = OMAP_DSS_COLOR_CLUT1;
+ break;
+ case 2:
+ dssmode = OMAP_DSS_COLOR_CLUT2;
+ break;
+ case 4:
+ dssmode = OMAP_DSS_COLOR_CLUT4;
+ break;
+ case 8:
+ dssmode = OMAP_DSS_COLOR_CLUT8;
+ break;
+ case 12:
+ dssmode = OMAP_DSS_COLOR_RGB12U;
+ break;
+ case 16:
+ dssmode = OMAP_DSS_COLOR_RGB16;
+ break;
+ case 24:
+ dssmode = OMAP_DSS_COLOR_RGB24P;
+ break;
+ case 32:
+ dssmode = OMAP_DSS_COLOR_RGB24U;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
+ struct omapfb_colormode *m = &omapfb_colormodes[i];
+ if (dssmode == m->dssmode) {
+ assign_colormode_to_var(var, m);
+ *mode = m->dssmode;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int check_fb_res_bounds(struct fb_var_screeninfo *var)
+{
+ int xres_min = OMAPFB_PLANE_XRES_MIN;
+ int xres_max = 2048;
+ int yres_min = OMAPFB_PLANE_YRES_MIN;
+ int yres_max = 2048;
+
+ /* XXX: some applications seem to set virtual res to 0. */
+ if (var->xres_virtual == 0)
+ var->xres_virtual = var->xres;
+
+ if (var->yres_virtual == 0)
+ var->yres_virtual = var->yres;
+
+ if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
+ return -EINVAL;
+
+ if (var->xres < xres_min)
+ var->xres = xres_min;
+ if (var->yres < yres_min)
+ var->yres = yres_min;
+ if (var->xres > xres_max)
+ var->xres = xres_max;
+ if (var->yres > yres_max)
+ var->yres = yres_max;
+
+ if (var->xres > var->xres_virtual)
+ var->xres = var->xres_virtual;
+ if (var->yres > var->yres_virtual)
+ var->yres = var->yres_virtual;
+
+ return 0;
+}
+
+static void shrink_height(unsigned long max_frame_size,
+ struct fb_var_screeninfo *var)
+{
+ DBG("can't fit FB into memory, reducing y\n");
+ var->yres_virtual = max_frame_size /
+ (var->xres_virtual * var->bits_per_pixel >> 3);
+
+ if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
+ var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
+
+ if (var->yres > var->yres_virtual)
+ var->yres = var->yres_virtual;
+}
+
+static void shrink_width(unsigned long max_frame_size,
+ struct fb_var_screeninfo *var)
+{
+ DBG("can't fit FB into memory, reducing x\n");
+ var->xres_virtual = max_frame_size / var->yres_virtual /
+ (var->bits_per_pixel >> 3);
+
+ if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
+ var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
+
+ if (var->xres > var->xres_virtual)
+ var->xres = var->xres_virtual;
+}
+
+static int check_vrfb_fb_size(unsigned long region_size,
+ const struct fb_var_screeninfo *var)
+{
+ unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
+ var->yres_virtual, var->bits_per_pixel >> 3);
+
+ return min_phys_size > region_size ? -EINVAL : 0;
+}
+
+static int check_fb_size(const struct omapfb_info *ofbi,
+ struct fb_var_screeninfo *var)
+{
+ unsigned long max_frame_size = ofbi->region->size;
+ int bytespp = var->bits_per_pixel >> 3;
+ unsigned long line_size = var->xres_virtual * bytespp;
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ /* One needs to check for both VRFB and OMAPFB limitations. */
+ if (check_vrfb_fb_size(max_frame_size, var))
+ shrink_height(omap_vrfb_max_height(
+ max_frame_size, var->xres_virtual, bytespp) *
+ line_size, var);
+
+ if (check_vrfb_fb_size(max_frame_size, var)) {
+ DBG("cannot fit FB to memory\n");
+ return -EINVAL;
+ }
+
+ return 0;
+ }
+
+ DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
+
+ if (line_size * var->yres_virtual > max_frame_size)
+ shrink_height(max_frame_size, var);
+
+ if (line_size * var->yres_virtual > max_frame_size) {
+ shrink_width(max_frame_size, var);
+ line_size = var->xres_virtual * bytespp;
+ }
+
+ if (line_size * var->yres_virtual > max_frame_size) {
+ DBG("cannot fit FB to memory\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * Consider if VRFB assisted rotation is in use and if the virtual space for
+ * the zero degree view needs to be mapped. The need for mapping also acts as
+ * the trigger for setting up the hardware on the context in question. This
+ * ensures that one does not attempt to access the virtual view before the
+ * hardware is serving the address translations.
+ */
+static int setup_vrfb_rotation(struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_mem_region *rg = ofbi->region;
+ struct vrfb *vrfb = &rg->vrfb;
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ unsigned bytespp;
+ bool yuv_mode;
+ enum omap_color_mode mode;
+ int r;
+ bool reconf;
+
+ if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
+ return 0;
+
+ DBG("setup_vrfb_rotation\n");
+
+ r = fb_mode_to_dss_mode(var, &mode);
+ if (r)
+ return r;
+
+ bytespp = var->bits_per_pixel >> 3;
+
+ yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
+
+ /* We need to reconfigure VRFB if the resolution changes, if yuv mode
+ * is enabled/disabled, or if bytes per pixel changes */
+
+ /* XXX we shouldn't allow this when framebuffer is mmapped */
+
+ reconf = false;
+
+ if (yuv_mode != vrfb->yuv_mode)
+ reconf = true;
+ else if (bytespp != vrfb->bytespp)
+ reconf = true;
+ else if (vrfb->xres != var->xres_virtual ||
+ vrfb->yres != var->yres_virtual)
+ reconf = true;
+
+ if (vrfb->vaddr[0] && reconf) {
+ fbi->screen_base = NULL;
+ fix->smem_start = 0;
+ fix->smem_len = 0;
+ iounmap(vrfb->vaddr[0]);
+ vrfb->vaddr[0] = NULL;
+ DBG("setup_vrfb_rotation: reset fb\n");
+ }
+
+ if (vrfb->vaddr[0])
+ return 0;
+
+ omap_vrfb_setup(&rg->vrfb, rg->paddr,
+ var->xres_virtual,
+ var->yres_virtual,
+ bytespp, yuv_mode);
+
+ /* Now one can ioremap the 0 angle view */
+ r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
+ if (r)
+ return r;
+
+ /* used by open/write in fbmem.c */
+ fbi->screen_base = ofbi->region->vrfb.vaddr[0];
+
+ fix->smem_start = ofbi->region->vrfb.paddr[0];
+
+ switch (var->nonstd) {
+ case OMAPFB_COLOR_YUV422:
+ case OMAPFB_COLOR_YUY422:
+ fix->line_length =
+ (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
+ break;
+ default:
+ fix->line_length =
+ (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
+ break;
+ }
+
+ fix->smem_len = var->yres_virtual * fix->line_length;
+
+ return 0;
+}
+
+int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
+ struct fb_var_screeninfo *var)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
+ struct omapfb_colormode *mode = &omapfb_colormodes[i];
+ if (dssmode == mode->dssmode) {
+ assign_colormode_to_var(var, mode);
+ return 0;
+ }
+ }
+ return -ENOENT;
+}
+
+void set_fb_fix(struct fb_info *fbi)
+{
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_mem_region *rg = ofbi->region;
+
+ DBG("set_fb_fix\n");
+
+ /* used by open/write in fbmem.c */
+ fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
+
+ /* used by mmap in fbmem.c */
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ switch (var->nonstd) {
+ case OMAPFB_COLOR_YUV422:
+ case OMAPFB_COLOR_YUY422:
+ fix->line_length =
+ (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
+ break;
+ default:
+ fix->line_length =
+ (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
+ break;
+ }
+
+ fix->smem_len = var->yres_virtual * fix->line_length;
+ } else {
+ fix->line_length =
+ (var->xres_virtual * var->bits_per_pixel) >> 3;
+ fix->smem_len = rg->size;
+ }
+
+ fix->smem_start = omapfb_get_region_paddr(ofbi);
+
+ fix->type = FB_TYPE_PACKED_PIXELS;
+
+ if (var->nonstd)
+ fix->visual = FB_VISUAL_PSEUDOCOLOR;
+ else {
+ switch (var->bits_per_pixel) {
+ case 32:
+ case 24:
+ case 16:
+ case 12:
+ fix->visual = FB_VISUAL_TRUECOLOR;
+ /* 12bpp is stored in 16 bits */
+ break;
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ fix->visual = FB_VISUAL_PSEUDOCOLOR;
+ break;
+ }
+ }
+
+ fix->accel = FB_ACCEL_NONE;
+
+ fix->xpanstep = 1;
+ fix->ypanstep = 1;
+}
+
+/* check new var and possibly modify it to be ok */
+int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omap_dss_device *display = fb2display(fbi);
+ enum omap_color_mode mode = 0;
+ int i;
+ int r;
+
+ DBG("check_fb_var %d\n", ofbi->id);
+
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
+ r = fb_mode_to_dss_mode(var, &mode);
+ if (r) {
+ DBG("cannot convert var to omap dss mode\n");
+ return r;
+ }
+
+ for (i = 0; i < ofbi->num_overlays; ++i) {
+ if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
+ DBG("invalid mode\n");
+ return -EINVAL;
+ }
+ }
+
+ if (var->rotate > 3)
+ return -EINVAL;
+
+ if (check_fb_res_bounds(var))
+ return -EINVAL;
+
+ /* When no memory is allocated ignore the size check */
+ if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
+ return -EINVAL;
+
+ if (var->xres + var->xoffset > var->xres_virtual)
+ var->xoffset = var->xres_virtual - var->xres;
+ if (var->yres + var->yoffset > var->yres_virtual)
+ var->yoffset = var->yres_virtual - var->yres;
+
+ DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
+ var->xres, var->yres,
+ var->xres_virtual, var->yres_virtual);
+
+ if (display && display->driver->get_dimensions) {
+ u32 w, h;
+ display->driver->get_dimensions(display, &w, &h);
+ var->width = DIV_ROUND_CLOSEST(w, 1000);
+ var->height = DIV_ROUND_CLOSEST(h, 1000);
+ } else {
+ var->height = -1;
+ var->width = -1;
+ }
+
+ var->grayscale = 0;
+
+ if (display && display->driver->get_timings) {
+ struct omap_video_timings timings;
+ display->driver->get_timings(display, &timings);
+
+ /* pixclock in ps, the rest in pixclock */
+ var->pixclock = timings.pixelclock != 0 ?
+ KHZ2PICOS(timings.pixelclock / 1000) :
+ 0;
+ var->left_margin = timings.hbp;
+ var->right_margin = timings.hfp;
+ var->upper_margin = timings.vbp;
+ var->lower_margin = timings.vfp;
+ var->hsync_len = timings.hsw;
+ var->vsync_len = timings.vsw;
+ var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
+ FB_SYNC_HOR_HIGH_ACT : 0;
+ var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
+ FB_SYNC_VERT_HIGH_ACT : 0;
+ var->vmode = timings.interlace ?
+ FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
+ } else {
+ var->pixclock = 0;
+ var->left_margin = 0;
+ var->right_margin = 0;
+ var->upper_margin = 0;
+ var->lower_margin = 0;
+ var->hsync_len = 0;
+ var->vsync_len = 0;
+ var->sync = 0;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ }
+
+ return 0;
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * fbdev framework callbacks
+ * ---------------------------------------------------------------------------
+ */
+static int omapfb_open(struct fb_info *fbi, int user)
+{
+ return 0;
+}
+
+static int omapfb_release(struct fb_info *fbi, int user)
+{
+ return 0;
+}
+
+static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
+ const struct fb_fix_screeninfo *fix, int rotation)
+{
+ unsigned offset;
+
+ offset = var->yoffset * fix->line_length +
+ var->xoffset * (var->bits_per_pixel >> 3);
+
+ return offset;
+}
+
+static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
+ const struct fb_fix_screeninfo *fix, int rotation)
+{
+ unsigned offset;
+
+ if (rotation == FB_ROTATE_UD)
+ offset = (var->yres_virtual - var->yres) *
+ fix->line_length;
+ else if (rotation == FB_ROTATE_CW)
+ offset = (var->yres_virtual - var->yres) *
+ (var->bits_per_pixel >> 3);
+ else
+ offset = 0;
+
+ if (rotation == FB_ROTATE_UR)
+ offset += var->yoffset * fix->line_length +
+ var->xoffset * (var->bits_per_pixel >> 3);
+ else if (rotation == FB_ROTATE_UD)
+ offset -= var->yoffset * fix->line_length +
+ var->xoffset * (var->bits_per_pixel >> 3);
+ else if (rotation == FB_ROTATE_CW)
+ offset -= var->xoffset * fix->line_length +
+ var->yoffset * (var->bits_per_pixel >> 3);
+ else if (rotation == FB_ROTATE_CCW)
+ offset += var->xoffset * fix->line_length +
+ var->yoffset * (var->bits_per_pixel >> 3);
+
+ return offset;
+}
+
+static void omapfb_calc_addr(const struct omapfb_info *ofbi,
+ const struct fb_var_screeninfo *var,
+ const struct fb_fix_screeninfo *fix,
+ int rotation, u32 *paddr)
+{
+ u32 data_start_p;
+ int offset;
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
+ else
+ data_start_p = omapfb_get_region_paddr(ofbi);
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ offset = calc_rotation_offset_vrfb(var, fix, rotation);
+ else
+ offset = calc_rotation_offset_dma(var, fix, rotation);
+
+ data_start_p += offset;
+
+ if (offset)
+ DBG("offset %d, %d = %d\n",
+ var->xoffset, var->yoffset, offset);
+
+ DBG("paddr %x\n", data_start_p);
+
+ *paddr = data_start_p;
+}
+
+/* setup overlay according to the fb */
+int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
+ u16 posx, u16 posy, u16 outw, u16 outh)
+{
+ int r = 0;
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ enum omap_color_mode mode = 0;
+ u32 data_start_p = 0;
+ struct omap_overlay_info info;
+ int xres, yres;
+ int screen_width;
+ int mirror;
+ int rotation = var->rotate;
+ int i;
+
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
+ for (i = 0; i < ofbi->num_overlays; i++) {
+ if (ovl != ofbi->overlays[i])
+ continue;
+
+ rotation = (rotation + ofbi->rotation[i]) % 4;
+ break;
+ }
+
+ DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
+ posx, posy, outw, outh);
+
+ if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
+ xres = var->yres;
+ yres = var->xres;
+ } else {
+ xres = var->xres;
+ yres = var->yres;
+ }
+
+ if (ofbi->region->size)
+ omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
+
+ r = fb_mode_to_dss_mode(var, &mode);
+ if (r) {
+ DBG("fb_mode_to_dss_mode failed");
+ goto err;
+ }
+
+ switch (var->nonstd) {
+ case OMAPFB_COLOR_YUV422:
+ case OMAPFB_COLOR_YUY422:
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ screen_width = fix->line_length
+ / (var->bits_per_pixel >> 2);
+ break;
+ }
+ default:
+ screen_width = fix->line_length / (var->bits_per_pixel >> 3);
+ break;
+ }
+
+ ovl->get_overlay_info(ovl, &info);
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ mirror = 0;
+ else
+ mirror = ofbi->mirror;
+
+ info.paddr = data_start_p;
+ info.screen_width = screen_width;
+ info.width = xres;
+ info.height = yres;
+ info.color_mode = mode;
+ info.rotation_type = ofbi->rotation_type;
+ info.rotation = rotation;
+ info.mirror = mirror;
+
+ info.pos_x = posx;
+ info.pos_y = posy;
+ info.out_width = outw;
+ info.out_height = outh;
+
+ r = ovl->set_overlay_info(ovl, &info);
+ if (r) {
+ DBG("ovl->setup_overlay_info failed\n");
+ goto err;
+ }
+
+ return 0;
+
+err:
+ DBG("setup_overlay failed\n");
+ return r;
+}
+
+/* apply var to the overlay */
+int omapfb_apply_changes(struct fb_info *fbi, int init)
+{
+ int r = 0;
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct omap_overlay *ovl;
+ u16 posx, posy;
+ u16 outw, outh;
+ int i;
+
+#ifdef DEBUG
+ if (omapfb_test_pattern)
+ fill_fb(fbi);
+#endif
+
+ WARN_ON(!atomic_read(&ofbi->region->lock_count));
+
+ for (i = 0; i < ofbi->num_overlays; i++) {
+ ovl = ofbi->overlays[i];
+
+ DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
+
+ if (ofbi->region->size == 0) {
+ /* the fb is not available. disable the overlay */
+ omapfb_overlay_enable(ovl, 0);
+ if (!init && ovl->manager)
+ ovl->manager->apply(ovl->manager);
+ continue;
+ }
+
+ if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
+ int rotation = (var->rotate + ofbi->rotation[i]) % 4;
+ if (rotation == FB_ROTATE_CW ||
+ rotation == FB_ROTATE_CCW) {
+ outw = var->yres;
+ outh = var->xres;
+ } else {
+ outw = var->xres;
+ outh = var->yres;
+ }
+ } else {
+ struct omap_overlay_info info;
+ ovl->get_overlay_info(ovl, &info);
+ outw = info.out_width;
+ outh = info.out_height;
+ }
+
+ if (init) {
+ posx = 0;
+ posy = 0;
+ } else {
+ struct omap_overlay_info info;
+ ovl->get_overlay_info(ovl, &info);
+ posx = info.pos_x;
+ posy = info.pos_y;
+ }
+
+ r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
+ if (r)
+ goto err;
+
+ if (!init && ovl->manager)
+ ovl->manager->apply(ovl->manager);
+ }
+ return 0;
+err:
+ DBG("apply_changes failed\n");
+ return r;
+}
+
+/* checks var and eventually tweaks it to something supported,
+ * DO NOT MODIFY PAR */
+static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ int r;
+
+ DBG("check_var(%d)\n", FB2OFB(fbi)->id);
+
+ omapfb_get_mem_region(ofbi->region);
+
+ r = check_fb_var(fbi, var);
+
+ omapfb_put_mem_region(ofbi->region);
+
+ return r;
+}
+
+/* set the video mode according to info->var */
+static int omapfb_set_par(struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ int r;
+
+ DBG("set_par(%d)\n", FB2OFB(fbi)->id);
+
+ omapfb_get_mem_region(ofbi->region);
+
+ set_fb_fix(fbi);
+
+ r = setup_vrfb_rotation(fbi);
+ if (r)
+ goto out;
+
+ r = omapfb_apply_changes(fbi, 0);
+
+ out:
+ omapfb_put_mem_region(ofbi->region);
+
+ return r;
+}
+
+static int omapfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct fb_var_screeninfo new_var;
+ int r;
+
+ DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
+
+ if (var->xoffset == fbi->var.xoffset &&
+ var->yoffset == fbi->var.yoffset)
+ return 0;
+
+ new_var = fbi->var;
+ new_var.xoffset = var->xoffset;
+ new_var.yoffset = var->yoffset;
+
+ fbi->var = new_var;
+
+ omapfb_get_mem_region(ofbi->region);
+
+ r = omapfb_apply_changes(fbi, 0);
+
+ omapfb_put_mem_region(ofbi->region);
+
+ return r;
+}
+
+static void mmap_user_open(struct vm_area_struct *vma)
+{
+ struct omapfb2_mem_region *rg = vma->vm_private_data;
+
+ omapfb_get_mem_region(rg);
+ atomic_inc(&rg->map_count);
+ omapfb_put_mem_region(rg);
+}
+
+static void mmap_user_close(struct vm_area_struct *vma)
+{
+ struct omapfb2_mem_region *rg = vma->vm_private_data;
+
+ omapfb_get_mem_region(rg);
+ atomic_dec(&rg->map_count);
+ omapfb_put_mem_region(rg);
+}
+
+static struct vm_operations_struct mmap_user_ops = {
+ .open = mmap_user_open,
+ .close = mmap_user_close,
+};
+
+static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ struct omapfb2_mem_region *rg;
+ unsigned long start;
+ u32 len;
+ int r;
+
+ rg = omapfb_get_mem_region(ofbi->region);
+
+ start = omapfb_get_region_paddr(ofbi);
+ len = fix->smem_len;
+
+ DBG("user mmap region start %lx, len %d, off %lx\n", start, len,
+ vma->vm_pgoff << PAGE_SHIFT);
+
+ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ vma->vm_ops = &mmap_user_ops;
+ vma->vm_private_data = rg;
+
+ r = vm_iomap_memory(vma, start, len);
+ if (r)
+ goto error;
+
+ /* vm_ops.open won't be called for mmap itself. */
+ atomic_inc(&rg->map_count);
+
+ omapfb_put_mem_region(rg);
+
+ return 0;
+
+error:
+ omapfb_put_mem_region(ofbi->region);
+
+ return r;
+}
+
+/* Store a single color palette entry into a pseudo palette or the hardware
+ * palette if one is available. For now we support only 16bpp and thus store
+ * the entry only to the pseudo palette.
+ */
+static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
+ u_int blue, u_int transp, int update_hw_pal)
+{
+ /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
+ /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
+ struct fb_var_screeninfo *var = &fbi->var;
+ int r = 0;
+
+ enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
+
+ /*switch (plane->color_mode) {*/
+ switch (mode) {
+ case OMAPFB_COLOR_YUV422:
+ case OMAPFB_COLOR_YUV420:
+ case OMAPFB_COLOR_YUY422:
+ r = -EINVAL;
+ break;
+ case OMAPFB_COLOR_CLUT_8BPP:
+ case OMAPFB_COLOR_CLUT_4BPP:
+ case OMAPFB_COLOR_CLUT_2BPP:
+ case OMAPFB_COLOR_CLUT_1BPP:
+ /*
+ if (fbdev->ctrl->setcolreg)
+ r = fbdev->ctrl->setcolreg(regno, red, green, blue,
+ transp, update_hw_pal);
+ */
+ /* Fallthrough */
+ r = -EINVAL;
+ break;
+ case OMAPFB_COLOR_RGB565:
+ case OMAPFB_COLOR_RGB444:
+ case OMAPFB_COLOR_RGB24P:
+ case OMAPFB_COLOR_RGB24U:
+ if (r != 0)
+ break;
+
+ if (regno < 16) {
+ u32 pal;
+ pal = ((red >> (16 - var->red.length)) <<
+ var->red.offset) |
+ ((green >> (16 - var->green.length)) <<
+ var->green.offset) |
+ (blue >> (16 - var->blue.length));
+ ((u32 *)(fbi->pseudo_palette))[regno] = pal;
+ }
+ break;
+ default:
+ BUG();
+ }
+ return r;
+}
+
+static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ DBG("setcolreg\n");
+
+ return _setcolreg(info, regno, red, green, blue, transp, 1);
+}
+
+static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
+{
+ int count, index, r;
+ u16 *red, *green, *blue, *transp;
+ u16 trans = 0xffff;
+
+ DBG("setcmap\n");
+
+ red = cmap->red;
+ green = cmap->green;
+ blue = cmap->blue;
+ transp = cmap->transp;
+ index = cmap->start;
+
+ for (count = 0; count < cmap->len; count++) {
+ if (transp)
+ trans = *transp++;
+ r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
+ count == cmap->len - 1);
+ if (r != 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int omapfb_blank(int blank, struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ struct omap_dss_device *display = fb2display(fbi);
+ struct omapfb_display_data *d;
+ int r = 0;
+
+ if (!display)
+ return -EINVAL;
+
+ omapfb_lock(fbdev);
+
+ d = get_display_data(fbdev, display);
+
+ switch (blank) {
+ case FB_BLANK_UNBLANK:
+ if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
+ goto exit;
+
+ r = display->driver->enable(display);
+
+ if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
+ d->update_mode == OMAPFB_AUTO_UPDATE &&
+ !d->auto_update_work_enabled)
+ omapfb_start_auto_update(fbdev, display);
+
+ break;
+
+ case FB_BLANK_NORMAL:
+ /* FB_BLANK_NORMAL could be implemented.
+ * Needs DSS additions. */
+ case FB_BLANK_VSYNC_SUSPEND:
+ case FB_BLANK_HSYNC_SUSPEND:
+ case FB_BLANK_POWERDOWN:
+ if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
+ goto exit;
+
+ if (d->auto_update_work_enabled)
+ omapfb_stop_auto_update(fbdev, display);
+
+ display->driver->disable(display);
+
+ break;
+
+ default:
+ r = -EINVAL;
+ }
+
+exit:
+ omapfb_unlock(fbdev);
+
+ return r;
+}
+
+#if 0
+/* XXX fb_read and fb_write are needed for VRFB */
+ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
+ /* XXX needed for VRFB */
+ return count;
+}
+#endif
+
+static struct fb_ops omapfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = omapfb_open,
+ .fb_release = omapfb_release,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_blank = omapfb_blank,
+ .fb_ioctl = omapfb_ioctl,
+ .fb_check_var = omapfb_check_var,
+ .fb_set_par = omapfb_set_par,
+ .fb_pan_display = omapfb_pan_display,
+ .fb_mmap = omapfb_mmap,
+ .fb_setcolreg = omapfb_setcolreg,
+ .fb_setcmap = omapfb_setcmap,
+ /*.fb_write = omapfb_write,*/
+};
+
+static void omapfb_free_fbmem(struct fb_info *fbi)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ struct omapfb2_mem_region *rg;
+
+ rg = ofbi->region;
+
+ if (rg->token == NULL)
+ return;
+
+ WARN_ON(atomic_read(&rg->map_count));
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ /* unmap the 0 angle rotation */
+ if (rg->vrfb.vaddr[0]) {
+ iounmap(rg->vrfb.vaddr[0]);
+ rg->vrfb.vaddr[0] = NULL;
+ }
+
+ omap_vrfb_release_ctx(&rg->vrfb);
+ }
+
+ dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
+ &rg->attrs);
+
+ rg->token = NULL;
+ rg->vaddr = NULL;
+ rg->paddr = 0;
+ rg->alloc = 0;
+ rg->size = 0;
+}
+
+static void clear_fb_info(struct fb_info *fbi)
+{
+ memset(&fbi->var, 0, sizeof(fbi->var));
+ memset(&fbi->fix, 0, sizeof(fbi->fix));
+ strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
+}
+
+static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
+{
+ int i;
+
+ DBG("free all fbmem\n");
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct fb_info *fbi = fbdev->fbs[i];
+ omapfb_free_fbmem(fbi);
+ clear_fb_info(fbi);
+ }
+
+ return 0;
+}
+
+static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
+ unsigned long paddr)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ struct omapfb2_mem_region *rg;
+ void *token;
+ DEFINE_DMA_ATTRS(attrs);
+ dma_addr_t dma_handle;
+ int r;
+
+ rg = ofbi->region;
+
+ rg->paddr = 0;
+ rg->vaddr = NULL;
+ memset(&rg->vrfb, 0, sizeof rg->vrfb);
+ rg->size = 0;
+ rg->type = 0;
+ rg->alloc = false;
+ rg->map = false;
+
+ size = PAGE_ALIGN(size);
+
+ dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+
+ DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
+
+ token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
+ GFP_KERNEL, &attrs);
+
+ if (token == NULL) {
+ dev_err(fbdev->dev, "failed to allocate framebuffer\n");
+ return -ENOMEM;
+ }
+
+ DBG("allocated VRAM paddr %lx, vaddr %p\n",
+ (unsigned long)dma_handle, token);
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ r = omap_vrfb_request_ctx(&rg->vrfb);
+ if (r) {
+ dma_free_attrs(fbdev->dev, size, token, dma_handle,
+ &attrs);
+ dev_err(fbdev->dev, "vrfb create ctx failed\n");
+ return r;
+ }
+ }
+
+ rg->attrs = attrs;
+ rg->token = token;
+ rg->dma_handle = dma_handle;
+
+ rg->paddr = (unsigned long)dma_handle;
+ rg->vaddr = (void __iomem *)token;
+ rg->size = size;
+ rg->alloc = 1;
+
+ return 0;
+}
+
+/* allocate fbmem using display resolution as reference */
+static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
+ unsigned long paddr)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ struct omap_dss_device *display;
+ int bytespp;
+
+ display = fb2display(fbi);
+
+ if (!display)
+ return 0;
+
+ switch (omapfb_get_recommended_bpp(fbdev, display)) {
+ case 16:
+ bytespp = 2;
+ break;
+ case 24:
+ bytespp = 4;
+ break;
+ default:
+ bytespp = 4;
+ break;
+ }
+
+ if (!size) {
+ u16 w, h;
+
+ display->driver->get_resolution(display, &w, &h);
+
+ if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
+ size = max(omap_vrfb_min_phys_size(w, h, bytespp),
+ omap_vrfb_min_phys_size(h, w, bytespp));
+
+ DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
+ w * h * bytespp, size);
+ } else {
+ size = w * h * bytespp;
+ }
+ }
+
+ if (!size)
+ return 0;
+
+ return omapfb_alloc_fbmem(fbi, size, paddr);
+}
+
+static int omapfb_parse_vram_param(const char *param, int max_entries,
+ unsigned long *sizes, unsigned long *paddrs)
+{
+ int fbnum;
+ unsigned long size;
+ unsigned long paddr = 0;
+ char *p, *start;
+
+ start = (char *)param;
+
+ while (1) {
+ p = start;
+
+ fbnum = simple_strtoul(p, &p, 10);
+
+ if (p == start)
+ return -EINVAL;
+
+ if (*p != ':')
+ return -EINVAL;
+
+ if (fbnum >= max_entries)
+ return -EINVAL;
+
+ size = memparse(p + 1, &p);
+
+ if (!size)
+ return -EINVAL;
+
+ paddr = 0;
+
+ if (*p == '@') {
+ paddr = simple_strtoul(p + 1, &p, 16);
+
+ if (!paddr)
+ return -EINVAL;
+
+ }
+
+ WARN_ONCE(paddr,
+ "reserving memory at predefined address not supported\n");
+
+ paddrs[fbnum] = paddr;
+ sizes[fbnum] = size;
+
+ if (*p == 0)
+ break;
+
+ if (*p != ',')
+ return -EINVAL;
+
+ ++p;
+
+ start = p;
+ }
+
+ return 0;
+}
+
+static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
+{
+ int i, r;
+ unsigned long vram_sizes[10];
+ unsigned long vram_paddrs[10];
+
+ memset(&vram_sizes, 0, sizeof(vram_sizes));
+ memset(&vram_paddrs, 0, sizeof(vram_paddrs));
+
+ if (def_vram && omapfb_parse_vram_param(def_vram, 10,
+ vram_sizes, vram_paddrs)) {
+ dev_err(fbdev->dev, "failed to parse vram parameter\n");
+
+ memset(&vram_sizes, 0, sizeof(vram_sizes));
+ memset(&vram_paddrs, 0, sizeof(vram_paddrs));
+ }
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ /* allocate memory automatically only for fb0, or if
+ * excplicitly defined with vram or plat data option */
+ if (i == 0 || vram_sizes[i] != 0) {
+ r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
+ vram_sizes[i], vram_paddrs[i]);
+
+ if (r)
+ return r;
+ }
+ }
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
+ struct omapfb2_mem_region *rg;
+ rg = ofbi->region;
+
+ DBG("region%d phys %08x virt %p size=%lu\n",
+ i,
+ rg->paddr,
+ rg->vaddr,
+ rg->size);
+ }
+
+ return 0;
+}
+
+static void omapfb_clear_fb(struct fb_info *fbi)
+{
+ const struct fb_fillrect rect = {
+ .dx = 0,
+ .dy = 0,
+ .width = fbi->var.xres_virtual,
+ .height = fbi->var.yres_virtual,
+ .color = 0,
+ .rop = ROP_COPY,
+ };
+
+ cfb_fillrect(fbi, &rect);
+}
+
+int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
+{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ struct omapfb2_mem_region *rg = ofbi->region;
+ unsigned long old_size = rg->size;
+ unsigned long old_paddr = rg->paddr;
+ int old_type = rg->type;
+ int r;
+
+ if (type != OMAPFB_MEMTYPE_SDRAM)
+ return -EINVAL;
+
+ size = PAGE_ALIGN(size);
+
+ if (old_size == size && old_type == type)
+ return 0;
+
+ omapfb_free_fbmem(fbi);
+
+ if (size == 0) {
+ clear_fb_info(fbi);
+ return 0;
+ }
+
+ r = omapfb_alloc_fbmem(fbi, size, 0);
+
+ if (r) {
+ if (old_size)
+ omapfb_alloc_fbmem(fbi, old_size, old_paddr);
+
+ if (rg->size == 0)
+ clear_fb_info(fbi);
+
+ return r;
+ }
+
+ if (old_size == size)
+ return 0;
+
+ if (old_size == 0) {
+ DBG("initializing fb %d\n", ofbi->id);
+ r = omapfb_fb_init(fbdev, fbi);
+ if (r) {
+ DBG("omapfb_fb_init failed\n");
+ goto err;
+ }
+ r = omapfb_apply_changes(fbi, 1);
+ if (r) {
+ DBG("omapfb_apply_changes failed\n");
+ goto err;
+ }
+ } else {
+ struct fb_var_screeninfo new_var;
+ memcpy(&new_var, &fbi->var, sizeof(new_var));
+ r = check_fb_var(fbi, &new_var);
+ if (r)
+ goto err;
+ memcpy(&fbi->var, &new_var, sizeof(fbi->var));
+ set_fb_fix(fbi);
+ r = setup_vrfb_rotation(fbi);
+ if (r)
+ goto err;
+ }
+
+ omapfb_clear_fb(fbi);
+
+ return 0;
+err:
+ omapfb_free_fbmem(fbi);
+ clear_fb_info(fbi);
+ return r;
+}
+
+static void omapfb_auto_update_work(struct work_struct *work)
+{
+ struct omap_dss_device *dssdev;
+ struct omap_dss_driver *dssdrv;
+ struct omapfb_display_data *d;
+ u16 w, h;
+ unsigned int freq;
+ struct omapfb2_device *fbdev;
+
+ d = container_of(work, struct omapfb_display_data,
+ auto_update_work.work);
+
+ dssdev = d->dssdev;
+ dssdrv = dssdev->driver;
+ fbdev = d->fbdev;
+
+ if (!dssdrv || !dssdrv->update)
+ return;
+
+ if (dssdrv->sync)
+ dssdrv->sync(dssdev);
+
+ dssdrv->get_resolution(dssdev, &w, &h);
+ dssdrv->update(dssdev, 0, 0, w, h);
+
+ freq = auto_update_freq;
+ if (freq == 0)
+ freq = 20;
+ queue_delayed_work(fbdev->auto_update_wq,
+ &d->auto_update_work, HZ / freq);
+}
+
+void omapfb_start_auto_update(struct omapfb2_device *fbdev,
+ struct omap_dss_device *display)
+{
+ struct omapfb_display_data *d;
+
+ if (fbdev->auto_update_wq == NULL) {
+ struct workqueue_struct *wq;
+
+ wq = create_singlethread_workqueue("omapfb_auto_update");
+
+ if (wq == NULL) {
+ dev_err(fbdev->dev, "Failed to create workqueue for "
+ "auto-update\n");
+ return;
+ }
+
+ fbdev->auto_update_wq = wq;
+ }
+
+ d = get_display_data(fbdev, display);
+
+ INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
+
+ d->auto_update_work_enabled = true;
+
+ omapfb_auto_update_work(&d->auto_update_work.work);
+}
+
+void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
+ struct omap_dss_device *display)
+{
+ struct omapfb_display_data *d;
+
+ d = get_display_data(fbdev, display);
+
+ cancel_delayed_work_sync(&d->auto_update_work);
+
+ d->auto_update_work_enabled = false;
+}
+
+/* initialize fb_info, var, fix to something sane based on the display */
+static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
+{
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct omap_dss_device *display = fb2display(fbi);
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ int r = 0;
+
+ fbi->fbops = &omapfb_ops;
+ fbi->flags = FBINFO_FLAG_DEFAULT;
+ fbi->pseudo_palette = fbdev->pseudo_palette;
+
+ if (ofbi->region->size == 0) {
+ clear_fb_info(fbi);
+ return 0;
+ }
+
+ var->nonstd = 0;
+ var->bits_per_pixel = 0;
+
+ var->rotate = def_rotate;
+
+ if (display) {
+ u16 w, h;
+ int rotation = (var->rotate + ofbi->rotation[0]) % 4;
+
+ display->driver->get_resolution(display, &w, &h);
+
+ if (rotation == FB_ROTATE_CW ||
+ rotation == FB_ROTATE_CCW) {
+ var->xres = h;
+ var->yres = w;
+ } else {
+ var->xres = w;
+ var->yres = h;
+ }
+
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres;
+
+ if (!var->bits_per_pixel) {
+ switch (omapfb_get_recommended_bpp(fbdev, display)) {
+ case 16:
+ var->bits_per_pixel = 16;
+ break;
+ case 24:
+ var->bits_per_pixel = 32;
+ break;
+ default:
+ dev_err(fbdev->dev, "illegal display "
+ "bpp\n");
+ return -EINVAL;
+ }
+ }
+ } else {
+ /* if there's no display, let's just guess some basic values */
+ var->xres = 320;
+ var->yres = 240;
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres;
+ if (!var->bits_per_pixel)
+ var->bits_per_pixel = 16;
+ }
+
+ r = check_fb_var(fbi, var);
+ if (r)
+ goto err;
+
+ set_fb_fix(fbi);
+ r = setup_vrfb_rotation(fbi);
+ if (r)
+ goto err;
+
+ r = fb_alloc_cmap(&fbi->cmap, 256, 0);
+ if (r)
+ dev_err(fbdev->dev, "unable to allocate color map memory\n");
+
+err:
+ return r;
+}
+
+static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
+{
+ fb_dealloc_cmap(&fbi->cmap);
+}
+
+
+static void omapfb_free_resources(struct omapfb2_device *fbdev)
+{
+ int i;
+
+ DBG("free_resources\n");
+
+ if (fbdev == NULL)
+ return;
+
+ for (i = 0; i < fbdev->num_overlays; i++) {
+ struct omap_overlay *ovl = fbdev->overlays[i];
+
+ ovl->disable(ovl);
+
+ if (ovl->manager)
+ ovl->unset_manager(ovl);
+ }
+
+ for (i = 0; i < fbdev->num_fbs; i++)
+ unregister_framebuffer(fbdev->fbs[i]);
+
+ /* free the reserved fbmem */
+ omapfb_free_all_fbmem(fbdev);
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ fbinfo_cleanup(fbdev, fbdev->fbs[i]);
+ framebuffer_release(fbdev->fbs[i]);
+ }
+
+ for (i = 0; i < fbdev->num_displays; i++) {
+ struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
+
+ if (fbdev->displays[i].auto_update_work_enabled)
+ omapfb_stop_auto_update(fbdev, dssdev);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
+ dssdev->driver->disable(dssdev);
+
+ dssdev->driver->disconnect(dssdev);
+
+ omap_dss_put_device(dssdev);
+ }
+
+ if (fbdev->auto_update_wq != NULL) {
+ flush_workqueue(fbdev->auto_update_wq);
+ destroy_workqueue(fbdev->auto_update_wq);
+ fbdev->auto_update_wq = NULL;
+ }
+
+ dev_set_drvdata(fbdev->dev, NULL);
+}
+
+static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
+{
+ int r, i;
+
+ fbdev->num_fbs = 0;
+
+ DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
+
+ /* allocate fb_infos */
+ for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
+ struct fb_info *fbi;
+ struct omapfb_info *ofbi;
+
+ fbi = framebuffer_alloc(sizeof(struct omapfb_info),
+ fbdev->dev);
+
+ if (fbi == NULL) {
+ dev_err(fbdev->dev,
+ "unable to allocate memory for plane info\n");
+ return -ENOMEM;
+ }
+
+ clear_fb_info(fbi);
+
+ fbdev->fbs[i] = fbi;
+
+ ofbi = FB2OFB(fbi);
+ ofbi->fbdev = fbdev;
+ ofbi->id = i;
+
+ ofbi->region = &fbdev->regions[i];
+ ofbi->region->id = i;
+ init_rwsem(&ofbi->region->lock);
+
+ /* assign these early, so that fb alloc can use them */
+ ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
+ OMAP_DSS_ROT_DMA;
+ ofbi->mirror = def_mirror;
+
+ fbdev->num_fbs++;
+ }
+
+ DBG("fb_infos allocated\n");
+
+ /* assign overlays for the fbs */
+ for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
+ struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
+
+ ofbi->overlays[0] = fbdev->overlays[i];
+ ofbi->num_overlays = 1;
+ }
+
+ /* allocate fb memories */
+ r = omapfb_allocate_all_fbs(fbdev);
+ if (r) {
+ dev_err(fbdev->dev, "failed to allocate fbmem\n");
+ return r;
+ }
+
+ DBG("fbmems allocated\n");
+
+ /* setup fb_infos */
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ omapfb_get_mem_region(ofbi->region);
+ r = omapfb_fb_init(fbdev, fbi);
+ omapfb_put_mem_region(ofbi->region);
+
+ if (r) {
+ dev_err(fbdev->dev, "failed to setup fb_info\n");
+ return r;
+ }
+ }
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ if (ofbi->region->size == 0)
+ continue;
+
+ omapfb_clear_fb(fbi);
+ }
+
+ DBG("fb_infos initialized\n");
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ r = register_framebuffer(fbdev->fbs[i]);
+ if (r != 0) {
+ dev_err(fbdev->dev,
+ "registering framebuffer %d failed\n", i);
+ return r;
+ }
+ }
+
+ DBG("framebuffers registered\n");
+
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ omapfb_get_mem_region(ofbi->region);
+ r = omapfb_apply_changes(fbi, 1);
+ omapfb_put_mem_region(ofbi->region);
+
+ if (r) {
+ dev_err(fbdev->dev, "failed to change mode\n");
+ return r;
+ }
+ }
+
+ /* Enable fb0 */
+ if (fbdev->num_fbs > 0) {
+ struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
+
+ if (ofbi->num_overlays > 0) {
+ struct omap_overlay *ovl = ofbi->overlays[0];
+
+ ovl->manager->apply(ovl->manager);
+
+ r = omapfb_overlay_enable(ovl, 1);
+
+ if (r) {
+ dev_err(fbdev->dev,
+ "failed to enable overlay\n");
+ return r;
+ }
+ }
+ }
+
+ DBG("create_framebuffers done\n");
+
+ return 0;
+}
+
+static int omapfb_mode_to_timings(const char *mode_str,
+ struct omap_dss_device *display,
+ struct omap_video_timings *timings, u8 *bpp)
+{
+ struct fb_info *fbi;
+ struct fb_var_screeninfo *var;
+ struct fb_ops *fbops;
+ int r;
+
+#ifdef CONFIG_OMAP2_DSS_VENC
+ if (strcmp(mode_str, "pal") == 0) {
+ *timings = omap_dss_pal_timings;
+ *bpp = 24;
+ return 0;
+ } else if (strcmp(mode_str, "ntsc") == 0) {
+ *timings = omap_dss_ntsc_timings;
+ *bpp = 24;
+ return 0;
+ }
+#endif
+
+ /* this is quite a hack, but I wanted to use the modedb and for
+ * that we need fb_info and var, so we create dummy ones */
+
+ *bpp = 0;
+ fbi = NULL;
+ var = NULL;
+ fbops = NULL;
+
+ fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
+ if (fbi == NULL) {
+ r = -ENOMEM;
+ goto err;
+ }
+
+ var = kzalloc(sizeof(*var), GFP_KERNEL);
+ if (var == NULL) {
+ r = -ENOMEM;
+ goto err;
+ }
+
+ fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
+ if (fbops == NULL) {
+ r = -ENOMEM;
+ goto err;
+ }
+
+ fbi->fbops = fbops;
+
+ r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
+ if (r == 0) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ if (display->driver->get_timings) {
+ display->driver->get_timings(display, timings);
+ } else {
+ timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
+ timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
+ timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
+ }
+
+ timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
+ timings->hbp = var->left_margin;
+ timings->hfp = var->right_margin;
+ timings->vbp = var->upper_margin;
+ timings->vfp = var->lower_margin;
+ timings->hsw = var->hsync_len;
+ timings->vsw = var->vsync_len;
+ timings->x_res = var->xres;
+ timings->y_res = var->yres;
+ timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
+ OMAPDSS_SIG_ACTIVE_HIGH :
+ OMAPDSS_SIG_ACTIVE_LOW;
+ timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
+ OMAPDSS_SIG_ACTIVE_HIGH :
+ OMAPDSS_SIG_ACTIVE_LOW;
+ timings->interlace = var->vmode & FB_VMODE_INTERLACED;
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ *bpp = 16;
+ break;
+ case 24:
+ case 32:
+ default:
+ *bpp = 24;
+ break;
+ }
+
+ r = 0;
+
+err:
+ kfree(fbi);
+ kfree(var);
+ kfree(fbops);
+
+ return r;
+}
+
+static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
+ struct omap_dss_device *display, char *mode_str)
+{
+ int r;
+ u8 bpp;
+ struct omap_video_timings timings, temp_timings;
+ struct omapfb_display_data *d;
+
+ r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
+ if (r)
+ return r;
+
+ d = get_display_data(fbdev, display);
+ d->bpp_override = bpp;
+
+ if (display->driver->check_timings) {
+ r = display->driver->check_timings(display, &timings);
+ if (r)
+ return r;
+ } else {
+ /* If check_timings is not present compare xres and yres */
+ if (display->driver->get_timings) {
+ display->driver->get_timings(display, &temp_timings);
+
+ if (temp_timings.x_res != timings.x_res ||
+ temp_timings.y_res != timings.y_res)
+ return -EINVAL;
+ }
+ }
+
+ if (display->driver->set_timings)
+ display->driver->set_timings(display, &timings);
+
+ return 0;
+}
+
+static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
+ struct omap_dss_device *dssdev)
+{
+ struct omapfb_display_data *d;
+
+ BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
+
+ d = get_display_data(fbdev, dssdev);
+
+ if (d->bpp_override != 0)
+ return d->bpp_override;
+
+ return dssdev->driver->get_recommended_bpp(dssdev);
+}
+
+static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
+{
+ char *str, *options, *this_opt;
+ int r = 0;
+
+ str = kstrdup(def_mode, GFP_KERNEL);
+ if (!str)
+ return -ENOMEM;
+ options = str;
+
+ while (!r && (this_opt = strsep(&options, ",")) != NULL) {
+ char *p, *display_str, *mode_str;
+ struct omap_dss_device *display;
+ int i;
+
+ p = strchr(this_opt, ':');
+ if (!p) {
+ r = -EINVAL;
+ break;
+ }
+
+ *p = 0;
+ display_str = this_opt;
+ mode_str = p + 1;
+
+ display = NULL;
+ for (i = 0; i < fbdev->num_displays; ++i) {
+ if (strcmp(fbdev->displays[i].dssdev->name,
+ display_str) == 0) {
+ display = fbdev->displays[i].dssdev;
+ break;
+ }
+ }
+
+ if (!display) {
+ r = -EINVAL;
+ break;
+ }
+
+ r = omapfb_set_def_mode(fbdev, display, mode_str);
+ if (r)
+ break;
+ }
+
+ kfree(str);
+
+ return r;
+}
+
+static void fb_videomode_to_omap_timings(struct fb_videomode *m,
+ struct omap_dss_device *display,
+ struct omap_video_timings *t)
+{
+ if (display->driver->get_timings) {
+ display->driver->get_timings(display, t);
+ } else {
+ t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
+ t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
+ t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
+ }
+
+ t->x_res = m->xres;
+ t->y_res = m->yres;
+ t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
+ t->hsw = m->hsync_len;
+ t->hfp = m->right_margin;
+ t->hbp = m->left_margin;
+ t->vsw = m->vsync_len;
+ t->vfp = m->lower_margin;
+ t->vbp = m->upper_margin;
+ t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
+ OMAPDSS_SIG_ACTIVE_HIGH :
+ OMAPDSS_SIG_ACTIVE_LOW;
+ t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
+ OMAPDSS_SIG_ACTIVE_HIGH :
+ OMAPDSS_SIG_ACTIVE_LOW;
+ t->interlace = m->vmode & FB_VMODE_INTERLACED;
+}
+
+static int omapfb_find_best_mode(struct omap_dss_device *display,
+ struct omap_video_timings *timings)
+{
+ struct fb_monspecs *specs;
+ u8 *edid;
+ int r, i, best_idx, len;
+
+ if (!display->driver->read_edid)
+ return -ENODEV;
+
+ len = 0x80 * 2;
+ edid = kmalloc(len, GFP_KERNEL);
+ if (edid == NULL)
+ return -ENOMEM;
+
+ r = display->driver->read_edid(display, edid, len);
+ if (r < 0)
+ goto err1;
+
+ specs = kzalloc(sizeof(*specs), GFP_KERNEL);
+ if (specs == NULL) {
+ r = -ENOMEM;
+ goto err1;
+ }
+
+ fb_edid_to_monspecs(edid, specs);
+
+ best_idx = -1;
+
+ for (i = 0; i < specs->modedb_len; ++i) {
+ struct fb_videomode *m;
+ struct omap_video_timings t;
+
+ m = &specs->modedb[i];
+
+ if (m->pixclock == 0)
+ continue;
+
+ /* skip repeated pixel modes */
+ if (m->xres == 2880 || m->xres == 1440)
+ continue;
+
+ if (m->vmode & FB_VMODE_INTERLACED ||
+ m->vmode & FB_VMODE_DOUBLE)
+ continue;
+
+ fb_videomode_to_omap_timings(m, display, &t);
+
+ r = display->driver->check_timings(display, &t);
+ if (r == 0) {
+ best_idx = i;
+ break;
+ }
+ }
+
+ if (best_idx == -1) {
+ r = -ENOENT;
+ goto err2;
+ }
+
+ fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
+ timings);
+
+ r = 0;
+
+err2:
+ fb_destroy_modedb(specs->modedb);
+ kfree(specs);
+err1:
+ kfree(edid);
+
+ return r;
+}
+
+static int omapfb_init_display(struct omapfb2_device *fbdev,
+ struct omap_dss_device *dssdev)
+{
+ struct omap_dss_driver *dssdrv = dssdev->driver;
+ struct omapfb_display_data *d;
+ int r;
+
+ r = dssdrv->enable(dssdev);
+ if (r) {
+ dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
+ dssdev->name);
+ return r;
+ }
+
+ d = get_display_data(fbdev, dssdev);
+
+ d->fbdev = fbdev;
+
+ if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
+ u16 w, h;
+
+ if (auto_update) {
+ omapfb_start_auto_update(fbdev, dssdev);
+ d->update_mode = OMAPFB_AUTO_UPDATE;
+ } else {
+ d->update_mode = OMAPFB_MANUAL_UPDATE;
+ }
+
+ if (dssdrv->enable_te) {
+ r = dssdrv->enable_te(dssdev, 1);
+ if (r) {
+ dev_err(fbdev->dev, "Failed to set TE\n");
+ return r;
+ }
+ }
+
+ dssdrv->get_resolution(dssdev, &w, &h);
+ r = dssdrv->update(dssdev, 0, 0, w, h);
+ if (r) {
+ dev_err(fbdev->dev,
+ "Failed to update display\n");
+ return r;
+ }
+ } else {
+ d->update_mode = OMAPFB_AUTO_UPDATE;
+ }
+
+ return 0;
+}
+
+static int omapfb_init_connections(struct omapfb2_device *fbdev,
+ struct omap_dss_device *def_dssdev)
+{
+ int i, r;
+ struct omap_overlay_manager *mgr;
+
+ r = def_dssdev->driver->connect(def_dssdev);
+ if (r) {
+ dev_err(fbdev->dev, "failed to connect default display\n");
+ return r;
+ }
+
+ for (i = 0; i < fbdev->num_displays; ++i) {
+ struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
+
+ if (dssdev == def_dssdev)
+ continue;
+
+ /*
+ * We don't care if the connect succeeds or not. We just want to
+ * connect as many displays as possible.
+ */
+ dssdev->driver->connect(dssdev);
+ }
+
+ mgr = omapdss_find_mgr_from_display(def_dssdev);
+
+ if (!mgr) {
+ dev_err(fbdev->dev, "no ovl manager for the default display\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < fbdev->num_overlays; i++) {
+ struct omap_overlay *ovl = fbdev->overlays[i];
+
+ if (ovl->manager)
+ ovl->unset_manager(ovl);
+
+ r = ovl->set_manager(ovl, mgr);
+ if (r)
+ dev_warn(fbdev->dev,
+ "failed to connect overlay %s to manager %s\n",
+ ovl->name, mgr->name);
+ }
+
+ return 0;
+}
+
+static struct omap_dss_device *
+omapfb_find_default_display(struct omapfb2_device *fbdev)
+{
+ const char *def_name;
+ int i;
+
+ /*
+ * Search with the display name from the user or the board file,
+ * comparing to display names and aliases
+ */
+
+ def_name = omapdss_get_default_display_name();
+
+ if (def_name) {
+ for (i = 0; i < fbdev->num_displays; ++i) {
+ struct omap_dss_device *dssdev;
+
+ dssdev = fbdev->displays[i].dssdev;
+
+ if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
+ return dssdev;
+
+ if (strcmp(def_name, dssdev->alias) == 0)
+ return dssdev;
+ }
+
+ /* def_name given but not found */
+ return NULL;
+ }
+
+ /* then look for DT alias display0 */
+ for (i = 0; i < fbdev->num_displays; ++i) {
+ struct omap_dss_device *dssdev;
+ int id;
+
+ dssdev = fbdev->displays[i].dssdev;
+
+ if (dssdev->dev->of_node == NULL)
+ continue;
+
+ id = of_alias_get_id(dssdev->dev->of_node, "display");
+ if (id == 0)
+ return dssdev;
+ }
+
+ /* return the first display we have in the list */
+ return fbdev->displays[0].dssdev;
+}
+
+static int omapfb_probe(struct platform_device *pdev)
+{
+ struct omapfb2_device *fbdev = NULL;
+ int r = 0;
+ int i;
+ struct omap_dss_device *def_display;
+ struct omap_dss_device *dssdev;
+
+ DBG("omapfb_probe\n");
+
+ if (omapdss_is_initialized() == false)
+ return -EPROBE_DEFER;
+
+ if (pdev->num_resources != 0) {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -ENODEV;
+ goto err0;
+ }
+
+ fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
+ GFP_KERNEL);
+ if (fbdev == NULL) {
+ r = -ENOMEM;
+ goto err0;
+ }
+
+ if (def_vrfb && !omap_vrfb_supported()) {
+ def_vrfb = 0;
+ dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
+ "ignoring the module parameter vrfb=y\n");
+ }
+
+ r = omapdss_compat_init();
+ if (r)
+ goto err0;
+
+ mutex_init(&fbdev->mtx);
+
+ fbdev->dev = &pdev->dev;
+ platform_set_drvdata(pdev, fbdev);
+
+ fbdev->num_displays = 0;
+ dssdev = NULL;
+ for_each_dss_dev(dssdev) {
+ struct omapfb_display_data *d;
+
+ omap_dss_get_device(dssdev);
+
+ if (!dssdev->driver) {
+ dev_warn(&pdev->dev, "no driver for display: %s\n",
+ dssdev->name);
+ omap_dss_put_device(dssdev);
+ continue;
+ }
+
+ d = &fbdev->displays[fbdev->num_displays++];
+ d->dssdev = dssdev;
+ if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
+ d->update_mode = OMAPFB_MANUAL_UPDATE;
+ else
+ d->update_mode = OMAPFB_AUTO_UPDATE;
+ }
+
+ if (fbdev->num_displays == 0) {
+ dev_err(&pdev->dev, "no displays\n");
+ r = -EPROBE_DEFER;
+ goto cleanup;
+ }
+
+ fbdev->num_overlays = omap_dss_get_num_overlays();
+ for (i = 0; i < fbdev->num_overlays; i++)
+ fbdev->overlays[i] = omap_dss_get_overlay(i);
+
+ fbdev->num_managers = omap_dss_get_num_overlay_managers();
+ for (i = 0; i < fbdev->num_managers; i++)
+ fbdev->managers[i] = omap_dss_get_overlay_manager(i);
+
+ def_display = omapfb_find_default_display(fbdev);
+ if (def_display == NULL) {
+ dev_err(fbdev->dev, "failed to find default display\n");
+ r = -EPROBE_DEFER;
+ goto cleanup;
+ }
+
+ r = omapfb_init_connections(fbdev, def_display);
+ if (r) {
+ dev_err(fbdev->dev, "failed to init overlay connections\n");
+ goto cleanup;
+ }
+
+ if (def_mode && strlen(def_mode) > 0) {
+ if (omapfb_parse_def_modes(fbdev))
+ dev_warn(&pdev->dev, "cannot parse default modes\n");
+ } else if (def_display && def_display->driver->set_timings &&
+ def_display->driver->check_timings) {
+ struct omap_video_timings t;
+
+ r = omapfb_find_best_mode(def_display, &t);
+
+ if (r == 0)
+ def_display->driver->set_timings(def_display, &t);
+ }
+
+ r = omapfb_create_framebuffers(fbdev);
+ if (r)
+ goto cleanup;
+
+ for (i = 0; i < fbdev->num_managers; i++) {
+ struct omap_overlay_manager *mgr;
+ mgr = fbdev->managers[i];
+ r = mgr->apply(mgr);
+ if (r)
+ dev_warn(fbdev->dev, "failed to apply dispc config\n");
+ }
+
+ DBG("mgr->apply'ed\n");
+
+ if (def_display) {
+ r = omapfb_init_display(fbdev, def_display);
+ if (r) {
+ dev_err(fbdev->dev,
+ "failed to initialize default "
+ "display\n");
+ goto cleanup;
+ }
+ }
+
+ DBG("create sysfs for fbs\n");
+ r = omapfb_create_sysfs(fbdev);
+ if (r) {
+ dev_err(fbdev->dev, "failed to create sysfs entries\n");
+ goto cleanup;
+ }
+
+ if (def_display) {
+ u16 w, h;
+
+ def_display->driver->get_resolution(def_display, &w, &h);
+
+ dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
+ def_display->name, w, h);
+ }
+
+ return 0;
+
+cleanup:
+ omapfb_free_resources(fbdev);
+ omapdss_compat_uninit();
+err0:
+ dev_err(&pdev->dev, "failed to setup omapfb\n");
+ return r;
+}
+
+static int omapfb_remove(struct platform_device *pdev)
+{
+ struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
+
+ /* FIXME: wait till completion of pending events */
+
+ omapfb_remove_sysfs(fbdev);
+
+ omapfb_free_resources(fbdev);
+
+ omapdss_compat_uninit();
+
+ return 0;
+}
+
+static struct platform_driver omapfb_driver = {
+ .probe = omapfb_probe,
+ .remove = omapfb_remove,
+ .driver = {
+ .name = "omapfb",
+ },
+};
+
+module_param_named(mode, def_mode, charp, 0);
+module_param_named(vram, def_vram, charp, 0);
+module_param_named(rotate, def_rotate, int, 0);
+module_param_named(vrfb, def_vrfb, bool, 0);
+module_param_named(mirror, def_mirror, bool, 0);
+
+module_platform_driver(omapfb_driver);
+
+MODULE_ALIAS("platform:omapfb");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
+MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
+MODULE_LICENSE("GPL v2");
Code Review / kvmfornfv.git / blobdiff