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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/video/sh_mobile_lcdcfb.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
-rw-r--r--drivers/video/sh_mobile_lcdcfb.c2045
1 files changed, 2045 insertions, 0 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
new file mode 100644
index 00000000..e672698b
--- /dev/null
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -0,0 +1,2045 @@
+/*
+ * SuperH Mobile LCDC Framebuffer
+ *
+ * Copyright (c) 2008 Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/atomic.h>
+#include <linux/backlight.h>
+#include <linux/clk.h>
+#include <linux/console.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioctl.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+
+#include <video/sh_mobile_lcdc.h>
+#include <video/sh_mobile_meram.h>
+
+#include "sh_mobile_lcdcfb.h"
+
+#define SIDE_B_OFFSET 0x1000
+#define MIRROR_OFFSET 0x2000
+
+#define MAX_XRES 1920
+#define MAX_YRES 1080
+
+struct sh_mobile_lcdc_priv {
+ void __iomem *base;
+ int irq;
+ atomic_t hw_usecnt;
+ struct device *dev;
+ struct clk *dot_clk;
+ unsigned long lddckr;
+ struct sh_mobile_lcdc_chan ch[2];
+ struct notifier_block notifier;
+ int started;
+ int forced_fourcc; /* 2 channel LCDC must share fourcc setting */
+ struct sh_mobile_meram_info *meram_dev;
+};
+
+/* -----------------------------------------------------------------------------
+ * Registers access
+ */
+
+static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
+ [LDDCKPAT1R] = 0x400,
+ [LDDCKPAT2R] = 0x404,
+ [LDMT1R] = 0x418,
+ [LDMT2R] = 0x41c,
+ [LDMT3R] = 0x420,
+ [LDDFR] = 0x424,
+ [LDSM1R] = 0x428,
+ [LDSM2R] = 0x42c,
+ [LDSA1R] = 0x430,
+ [LDSA2R] = 0x434,
+ [LDMLSR] = 0x438,
+ [LDHCNR] = 0x448,
+ [LDHSYNR] = 0x44c,
+ [LDVLNR] = 0x450,
+ [LDVSYNR] = 0x454,
+ [LDPMR] = 0x460,
+ [LDHAJR] = 0x4a0,
+};
+
+static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
+ [LDDCKPAT1R] = 0x408,
+ [LDDCKPAT2R] = 0x40c,
+ [LDMT1R] = 0x600,
+ [LDMT2R] = 0x604,
+ [LDMT3R] = 0x608,
+ [LDDFR] = 0x60c,
+ [LDSM1R] = 0x610,
+ [LDSM2R] = 0x614,
+ [LDSA1R] = 0x618,
+ [LDMLSR] = 0x620,
+ [LDHCNR] = 0x624,
+ [LDHSYNR] = 0x628,
+ [LDVLNR] = 0x62c,
+ [LDVSYNR] = 0x630,
+ [LDPMR] = 0x63c,
+};
+
+static bool banked(int reg_nr)
+{
+ switch (reg_nr) {
+ case LDMT1R:
+ case LDMT2R:
+ case LDMT3R:
+ case LDDFR:
+ case LDSM1R:
+ case LDSA1R:
+ case LDSA2R:
+ case LDMLSR:
+ case LDHCNR:
+ case LDHSYNR:
+ case LDVLNR:
+ case LDVSYNR:
+ return true;
+ }
+ return false;
+}
+
+static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan)
+{
+ return chan->cfg->chan == LCDC_CHAN_SUBLCD;
+}
+
+static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan,
+ int reg_nr, unsigned long data)
+{
+ iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]);
+ if (banked(reg_nr))
+ iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
+ SIDE_B_OFFSET);
+}
+
+static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan,
+ int reg_nr, unsigned long data)
+{
+ iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
+ MIRROR_OFFSET);
+}
+
+static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan,
+ int reg_nr)
+{
+ return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]);
+}
+
+static void lcdc_write(struct sh_mobile_lcdc_priv *priv,
+ unsigned long reg_offs, unsigned long data)
+{
+ iowrite32(data, priv->base + reg_offs);
+}
+
+static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv,
+ unsigned long reg_offs)
+{
+ return ioread32(priv->base + reg_offs);
+}
+
+static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv,
+ unsigned long reg_offs,
+ unsigned long mask, unsigned long until)
+{
+ while ((lcdc_read(priv, reg_offs) & mask) != until)
+ cpu_relax();
+}
+
+/* -----------------------------------------------------------------------------
+ * Clock management
+ */
+
+static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv)
+{
+ if (atomic_inc_and_test(&priv->hw_usecnt)) {
+ if (priv->dot_clk)
+ clk_enable(priv->dot_clk);
+ pm_runtime_get_sync(priv->dev);
+ if (priv->meram_dev && priv->meram_dev->pdev)
+ pm_runtime_get_sync(&priv->meram_dev->pdev->dev);
+ }
+}
+
+static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)
+{
+ if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {
+ if (priv->meram_dev && priv->meram_dev->pdev)
+ pm_runtime_put_sync(&priv->meram_dev->pdev->dev);
+ pm_runtime_put(priv->dev);
+ if (priv->dot_clk)
+ clk_disable(priv->dot_clk);
+ }
+}
+
+static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv,
+ int clock_source)
+{
+ struct clk *clk;
+ char *str;
+
+ switch (clock_source) {
+ case LCDC_CLK_BUS:
+ str = "bus_clk";
+ priv->lddckr = LDDCKR_ICKSEL_BUS;
+ break;
+ case LCDC_CLK_PERIPHERAL:
+ str = "peripheral_clk";
+ priv->lddckr = LDDCKR_ICKSEL_MIPI;
+ break;
+ case LCDC_CLK_EXTERNAL:
+ str = NULL;
+ priv->lddckr = LDDCKR_ICKSEL_HDMI;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (str == NULL)
+ return 0;
+
+ clk = clk_get(priv->dev, str);
+ if (IS_ERR(clk)) {
+ dev_err(priv->dev, "cannot get dot clock %s\n", str);
+ return PTR_ERR(clk);
+ }
+
+ priv->dot_clk = clk;
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Display, panel and deferred I/O
+ */
+
+static void lcdc_sys_write_index(void *handle, unsigned long data)
+{
+ struct sh_mobile_lcdc_chan *ch = handle;
+
+ lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT);
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+ lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
+ (lcdc_chan_is_sublcd(ch) ? 2 : 0));
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+}
+
+static void lcdc_sys_write_data(void *handle, unsigned long data)
+{
+ struct sh_mobile_lcdc_chan *ch = handle;
+
+ lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW);
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+ lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
+ (lcdc_chan_is_sublcd(ch) ? 2 : 0));
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+}
+
+static unsigned long lcdc_sys_read_data(void *handle)
+{
+ struct sh_mobile_lcdc_chan *ch = handle;
+
+ lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR);
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+ lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA |
+ (lcdc_chan_is_sublcd(ch) ? 2 : 0));
+ udelay(1);
+ lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
+
+ return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK;
+}
+
+struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
+ lcdc_sys_write_index,
+ lcdc_sys_write_data,
+ lcdc_sys_read_data,
+};
+
+static int sh_mobile_lcdc_sginit(struct fb_info *info,
+ struct list_head *pagelist)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT;
+ struct page *page;
+ int nr_pages = 0;
+
+ sg_init_table(ch->sglist, nr_pages_max);
+
+ list_for_each_entry(page, pagelist, lru)
+ sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0);
+
+ return nr_pages;
+}
+
+static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
+ struct list_head *pagelist)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
+
+ /* enable clocks before accessing hardware */
+ sh_mobile_lcdc_clk_on(ch->lcdc);
+
+ /*
+ * It's possible to get here without anything on the pagelist via
+ * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync()
+ * invocation. In the former case, the acceleration routines are
+ * stepped in to when using the framebuffer console causing the
+ * workqueue to be scheduled without any dirty pages on the list.
+ *
+ * Despite this, a panel update is still needed given that the
+ * acceleration routines have their own methods for writing in
+ * that still need to be updated.
+ *
+ * The fsync() and empty pagelist case could be optimized for,
+ * but we don't bother, as any application exhibiting such
+ * behaviour is fundamentally broken anyways.
+ */
+ if (!list_empty(pagelist)) {
+ unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist);
+
+ /* trigger panel update */
+ dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
+ if (panel->start_transfer)
+ panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
+ lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
+ dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages,
+ DMA_TO_DEVICE);
+ } else {
+ if (panel->start_transfer)
+ panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
+ lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
+ }
+}
+
+static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)
+{
+ struct fb_deferred_io *fbdefio = info->fbdefio;
+
+ if (fbdefio)
+ schedule_delayed_work(&info->deferred_work, fbdefio->delay);
+}
+
+static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch)
+{
+ const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
+
+ if (ch->tx_dev) {
+ int ret;
+
+ ret = ch->tx_dev->ops->display_on(ch->tx_dev);
+ if (ret < 0)
+ return;
+
+ if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED)
+ ch->info->state = FBINFO_STATE_SUSPENDED;
+ }
+
+ /* HDMI must be enabled before LCDC configuration */
+ if (panel->display_on)
+ panel->display_on();
+}
+
+static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch)
+{
+ const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
+
+ if (panel->display_off)
+ panel->display_off();
+
+ if (ch->tx_dev)
+ ch->tx_dev->ops->display_off(ch->tx_dev);
+}
+
+static bool
+sh_mobile_lcdc_must_reconfigure(struct sh_mobile_lcdc_chan *ch,
+ const struct fb_videomode *new_mode)
+{
+ dev_dbg(ch->info->dev, "Old %ux%u, new %ux%u\n",
+ ch->display.mode.xres, ch->display.mode.yres,
+ new_mode->xres, new_mode->yres);
+
+ /* It can be a different monitor with an equal video-mode */
+ if (fb_mode_is_equal(&ch->display.mode, new_mode))
+ return false;
+
+ dev_dbg(ch->info->dev, "Switching %u -> %u lines\n",
+ ch->display.mode.yres, new_mode->yres);
+ ch->display.mode = *new_mode;
+
+ return true;
+}
+
+static int sh_mobile_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info);
+
+static int sh_mobile_lcdc_display_notify(struct sh_mobile_lcdc_chan *ch,
+ enum sh_mobile_lcdc_entity_event event,
+ const struct fb_videomode *mode,
+ const struct fb_monspecs *monspec)
+{
+ struct fb_info *info = ch->info;
+ struct fb_var_screeninfo var;
+ int ret = 0;
+
+ switch (event) {
+ case SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT:
+ /* HDMI plug in */
+ if (lock_fb_info(info)) {
+ console_lock();
+
+ ch->display.width = monspec->max_x * 10;
+ ch->display.height = monspec->max_y * 10;
+
+ if (!sh_mobile_lcdc_must_reconfigure(ch, mode) &&
+ info->state == FBINFO_STATE_RUNNING) {
+ /* First activation with the default monitor.
+ * Just turn on, if we run a resume here, the
+ * logo disappears.
+ */
+ info->var.width = monspec->max_x * 10;
+ info->var.height = monspec->max_y * 10;
+ sh_mobile_lcdc_display_on(ch);
+ } else {
+ /* New monitor or have to wake up */
+ fb_set_suspend(info, 0);
+ }
+
+ console_unlock();
+ unlock_fb_info(info);
+ }
+ break;
+
+ case SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT:
+ /* HDMI disconnect */
+ if (lock_fb_info(info)) {
+ console_lock();
+ fb_set_suspend(info, 1);
+ console_unlock();
+ unlock_fb_info(info);
+ }
+ break;
+
+ case SH_MOBILE_LCDC_EVENT_DISPLAY_MODE:
+ /* Validate a proposed new mode */
+ fb_videomode_to_var(&var, mode);
+ var.bits_per_pixel = info->var.bits_per_pixel;
+ var.grayscale = info->var.grayscale;
+ ret = sh_mobile_check_var(&var, info);
+ break;
+ }
+
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Format helpers
+ */
+
+struct sh_mobile_lcdc_format_info {
+ u32 fourcc;
+ unsigned int bpp;
+ bool yuv;
+ u32 lddfr;
+};
+
+static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = {
+ {
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .bpp = 16,
+ .yuv = false,
+ .lddfr = LDDFR_PKF_RGB16,
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .bpp = 24,
+ .yuv = false,
+ .lddfr = LDDFR_PKF_RGB24,
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR32,
+ .bpp = 32,
+ .yuv = false,
+ .lddfr = LDDFR_PKF_ARGB32,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .bpp = 12,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_420,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .bpp = 12,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_420,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .bpp = 16,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_422,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV61,
+ .bpp = 16,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_422,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV24,
+ .bpp = 24,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_444,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV42,
+ .bpp = 24,
+ .yuv = true,
+ .lddfr = LDDFR_CC | LDDFR_YF_444,
+ },
+};
+
+static const struct sh_mobile_lcdc_format_info *
+sh_mobile_format_info(u32 fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) {
+ if (sh_mobile_format_infos[i].fourcc == fourcc)
+ return &sh_mobile_format_infos[i];
+ }
+
+ return NULL;
+}
+
+static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var)
+{
+ if (var->grayscale > 1)
+ return var->grayscale;
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ return V4L2_PIX_FMT_RGB565;
+ case 24:
+ return V4L2_PIX_FMT_BGR24;
+ case 32:
+ return V4L2_PIX_FMT_BGR32;
+ default:
+ return 0;
+ }
+}
+
+static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var)
+{
+ return var->grayscale > 1;
+}
+
+/* -----------------------------------------------------------------------------
+ * Start, stop and IRQ
+ */
+
+static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data)
+{
+ struct sh_mobile_lcdc_priv *priv = data;
+ struct sh_mobile_lcdc_chan *ch;
+ unsigned long ldintr;
+ int is_sub;
+ int k;
+
+ /* Acknowledge interrupts and disable further VSYNC End IRQs. */
+ ldintr = lcdc_read(priv, _LDINTR);
+ lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE);
+
+ /* figure out if this interrupt is for main or sub lcd */
+ is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0;
+
+ /* wake up channel and disable clocks */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ ch = &priv->ch[k];
+
+ if (!ch->enabled)
+ continue;
+
+ /* Frame End */
+ if (ldintr & LDINTR_FS) {
+ if (is_sub == lcdc_chan_is_sublcd(ch)) {
+ ch->frame_end = 1;
+ wake_up(&ch->frame_end_wait);
+
+ sh_mobile_lcdc_clk_off(priv);
+ }
+ }
+
+ /* VSYNC End */
+ if (ldintr & LDINTR_VES)
+ complete(&ch->vsync_completion);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int sh_mobile_wait_for_vsync(struct sh_mobile_lcdc_chan *ch)
+{
+ unsigned long ldintr;
+ int ret;
+
+ /* Enable VSync End interrupt and be careful not to acknowledge any
+ * pending interrupt.
+ */
+ ldintr = lcdc_read(ch->lcdc, _LDINTR);
+ ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK;
+ lcdc_write(ch->lcdc, _LDINTR, ldintr);
+
+ ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion,
+ msecs_to_jiffies(100));
+ if (!ret)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
+ int start)
+{
+ unsigned long tmp = lcdc_read(priv, _LDCNT2R);
+ int k;
+
+ /* start or stop the lcdc */
+ if (start)
+ lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO);
+ else
+ lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO);
+
+ /* wait until power is applied/stopped on all channels */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
+ if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled)
+ while (1) {
+ tmp = lcdc_read_chan(&priv->ch[k], LDPMR)
+ & LDPMR_LPS;
+ if (start && tmp == LDPMR_LPS)
+ break;
+ if (!start && tmp == 0)
+ break;
+ cpu_relax();
+ }
+
+ if (!start)
+ lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */
+}
+
+static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
+{
+ const struct fb_var_screeninfo *var = &ch->info->var;
+ const struct fb_videomode *mode = &ch->display.mode;
+ unsigned long h_total, hsync_pos, display_h_total;
+ u32 tmp;
+
+ tmp = ch->ldmt1r_value;
+ tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL;
+ tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL;
+ tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0;
+ tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0;
+ tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0;
+ tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0;
+ tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0;
+ lcdc_write_chan(ch, LDMT1R, tmp);
+
+ /* setup SYS bus */
+ lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r);
+ lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r);
+
+ /* horizontal configuration */
+ h_total = mode->xres + mode->hsync_len + mode->left_margin
+ + mode->right_margin;
+ tmp = h_total / 8; /* HTCN */
+ tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */
+ lcdc_write_chan(ch, LDHCNR, tmp);
+
+ hsync_pos = mode->xres + mode->right_margin;
+ tmp = hsync_pos / 8; /* HSYNP */
+ tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */
+ lcdc_write_chan(ch, LDHSYNR, tmp);
+
+ /* vertical configuration */
+ tmp = mode->yres + mode->vsync_len + mode->upper_margin
+ + mode->lower_margin; /* VTLN */
+ tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */
+ lcdc_write_chan(ch, LDVLNR, tmp);
+
+ tmp = mode->yres + mode->lower_margin; /* VSYNP */
+ tmp |= mode->vsync_len << 16; /* VSYNW */
+ lcdc_write_chan(ch, LDVSYNR, tmp);
+
+ /* Adjust horizontal synchronisation for HDMI */
+ display_h_total = mode->xres + mode->hsync_len + mode->left_margin
+ + mode->right_margin;
+ tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16)
+ | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7);
+ lcdc_write_chan(ch, LDHAJR, tmp);
+}
+
+/*
+ * __sh_mobile_lcdc_start - Configure and tart the LCDC
+ * @priv: LCDC device
+ *
+ * Configure all enabled channels and start the LCDC device. All external
+ * devices (clocks, MERAM, panels, ...) are not touched by this function.
+ */
+static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
+{
+ struct sh_mobile_lcdc_chan *ch;
+ unsigned long tmp;
+ int k, m;
+
+ /* Enable LCDC channels. Read data from external memory, avoid using the
+ * BEU for now.
+ */
+ lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled);
+
+ /* Stop the LCDC first and disable all interrupts. */
+ sh_mobile_lcdc_start_stop(priv, 0);
+ lcdc_write(priv, _LDINTR, 0);
+
+ /* Configure power supply, dot clocks and start them. */
+ tmp = priv->lddckr;
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ /* Power supply */
+ lcdc_write_chan(ch, LDPMR, 0);
+
+ m = ch->cfg->clock_divider;
+ if (!m)
+ continue;
+
+ /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
+ * denominator.
+ */
+ lcdc_write_chan(ch, LDDCKPAT1R, 0);
+ lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
+
+ if (m == 1)
+ m = LDDCKR_MOSEL;
+ tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
+ }
+
+ lcdc_write(priv, _LDDCKR, tmp);
+ lcdc_write(priv, _LDDCKSTPR, 0);
+ lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0);
+
+ /* Setup geometry, format, frame buffer memory and operation mode. */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ sh_mobile_lcdc_geometry(ch);
+
+ tmp = ch->format->lddfr;
+
+ if (ch->format->yuv) {
+ switch (ch->colorspace) {
+ case V4L2_COLORSPACE_REC709:
+ tmp |= LDDFR_CF1;
+ break;
+ case V4L2_COLORSPACE_JPEG:
+ tmp |= LDDFR_CF0;
+ break;
+ }
+ }
+
+ lcdc_write_chan(ch, LDDFR, tmp);
+ lcdc_write_chan(ch, LDMLSR, ch->line_size);
+ lcdc_write_chan(ch, LDSA1R, ch->base_addr_y);
+ if (ch->format->yuv)
+ lcdc_write_chan(ch, LDSA2R, ch->base_addr_c);
+
+ /* When using deferred I/O mode, configure the LCDC for one-shot
+ * operation and enable the frame end interrupt. Otherwise use
+ * continuous read mode.
+ */
+ if (ch->ldmt1r_value & LDMT1R_IFM &&
+ ch->cfg->sys_bus_cfg.deferred_io_msec) {
+ lcdc_write_chan(ch, LDSM1R, LDSM1R_OS);
+ lcdc_write(priv, _LDINTR, LDINTR_FE);
+ } else {
+ lcdc_write_chan(ch, LDSM1R, 0);
+ }
+ }
+
+ /* Word and long word swap. */
+ switch (priv->ch[0].format->fourcc) {
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV61:
+ case V4L2_PIX_FMT_NV42:
+ tmp = LDDDSR_LS | LDDDSR_WS;
+ break;
+ case V4L2_PIX_FMT_BGR24:
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV24:
+ tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
+ break;
+ case V4L2_PIX_FMT_BGR32:
+ default:
+ tmp = LDDDSR_LS;
+ break;
+ }
+ lcdc_write(priv, _LDDDSR, tmp);
+
+ /* Enable the display output. */
+ lcdc_write(priv, _LDCNT1R, LDCNT1R_DE);
+ sh_mobile_lcdc_start_stop(priv, 1);
+ priv->started = 1;
+}
+
+static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
+{
+ struct sh_mobile_meram_info *mdev = priv->meram_dev;
+ struct sh_mobile_lcdc_chan *ch;
+ unsigned long tmp;
+ int ret;
+ int k;
+
+ /* enable clocks before accessing the hardware */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ if (priv->ch[k].enabled)
+ sh_mobile_lcdc_clk_on(priv);
+ }
+
+ /* reset */
+ lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR);
+ lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0);
+
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ const struct sh_mobile_lcdc_panel_cfg *panel;
+
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ panel = &ch->cfg->panel_cfg;
+ if (panel->setup_sys) {
+ ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops);
+ if (ret)
+ return ret;
+ }
+ }
+
+ /* Compute frame buffer base address and pitch for each channel. */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ int pixelformat;
+ void *meram;
+
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ ch->base_addr_y = ch->dma_handle;
+ ch->base_addr_c = ch->base_addr_y + ch->xres * ch->yres_virtual;
+ ch->line_size = ch->pitch;
+
+ /* Enable MERAM if possible. */
+ if (mdev == NULL || mdev->ops == NULL ||
+ ch->cfg->meram_cfg == NULL)
+ continue;
+
+ /* we need to de-init configured ICBs before we can
+ * re-initialize them.
+ */
+ if (ch->meram) {
+ mdev->ops->meram_unregister(mdev, ch->meram);
+ ch->meram = NULL;
+ }
+
+ switch (ch->format->fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ pixelformat = SH_MOBILE_MERAM_PF_NV;
+ break;
+ case V4L2_PIX_FMT_NV24:
+ case V4L2_PIX_FMT_NV42:
+ pixelformat = SH_MOBILE_MERAM_PF_NV24;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_BGR24:
+ case V4L2_PIX_FMT_BGR32:
+ default:
+ pixelformat = SH_MOBILE_MERAM_PF_RGB;
+ break;
+ }
+
+ meram = mdev->ops->meram_register(mdev, ch->cfg->meram_cfg,
+ ch->pitch, ch->yres, pixelformat,
+ &ch->line_size);
+ if (!IS_ERR(meram)) {
+ mdev->ops->meram_update(mdev, meram,
+ ch->base_addr_y, ch->base_addr_c,
+ &ch->base_addr_y, &ch->base_addr_c);
+ ch->meram = meram;
+ }
+ }
+
+ /* Start the LCDC. */
+ __sh_mobile_lcdc_start(priv);
+
+ /* Setup deferred I/O, tell the board code to enable the panels, and
+ * turn backlight on.
+ */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ tmp = ch->cfg->sys_bus_cfg.deferred_io_msec;
+ if (ch->ldmt1r_value & LDMT1R_IFM && tmp) {
+ ch->defio.deferred_io = sh_mobile_lcdc_deferred_io;
+ ch->defio.delay = msecs_to_jiffies(tmp);
+ ch->info->fbdefio = &ch->defio;
+ fb_deferred_io_init(ch->info);
+ }
+
+ sh_mobile_lcdc_display_on(ch);
+
+ if (ch->bl) {
+ ch->bl->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(ch->bl);
+ }
+ }
+
+ return 0;
+}
+
+static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
+{
+ struct sh_mobile_lcdc_chan *ch;
+ int k;
+
+ /* clean up deferred io and ask board code to disable panel */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ ch = &priv->ch[k];
+ if (!ch->enabled)
+ continue;
+
+ /* deferred io mode:
+ * flush frame, and wait for frame end interrupt
+ * clean up deferred io and enable clock
+ */
+ if (ch->info && ch->info->fbdefio) {
+ ch->frame_end = 0;
+ schedule_delayed_work(&ch->info->deferred_work, 0);
+ wait_event(ch->frame_end_wait, ch->frame_end);
+ fb_deferred_io_cleanup(ch->info);
+ ch->info->fbdefio = NULL;
+ sh_mobile_lcdc_clk_on(priv);
+ }
+
+ if (ch->bl) {
+ ch->bl->props.power = FB_BLANK_POWERDOWN;
+ backlight_update_status(ch->bl);
+ }
+
+ sh_mobile_lcdc_display_off(ch);
+
+ /* disable the meram */
+ if (ch->meram) {
+ struct sh_mobile_meram_info *mdev;
+ mdev = priv->meram_dev;
+ mdev->ops->meram_unregister(mdev, ch->meram);
+ ch->meram = 0;
+ }
+
+ }
+
+ /* stop the lcdc */
+ if (priv->started) {
+ sh_mobile_lcdc_start_stop(priv, 0);
+ priv->started = 0;
+ }
+
+ /* stop clocks */
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
+ if (priv->ch[k].enabled)
+ sh_mobile_lcdc_clk_off(priv);
+}
+
+/* -----------------------------------------------------------------------------
+ * Frame buffer operations
+ */
+
+static int sh_mobile_lcdc_setcolreg(u_int regno,
+ u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ u32 *palette = info->pseudo_palette;
+
+ if (regno >= PALETTE_NR)
+ return -EINVAL;
+
+ /* only FB_VISUAL_TRUECOLOR supported */
+
+ red >>= 16 - info->var.red.length;
+ green >>= 16 - info->var.green.length;
+ blue >>= 16 - info->var.blue.length;
+ transp >>= 16 - info->var.transp.length;
+
+ palette[regno] = (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset) |
+ (transp << info->var.transp.offset);
+
+ return 0;
+}
+
+static struct fb_fix_screeninfo sh_mobile_lcdc_fix = {
+ .id = "SH Mobile LCDC",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .accel = FB_ACCEL_NONE,
+ .xpanstep = 0,
+ .ypanstep = 1,
+ .ywrapstep = 0,
+ .capabilities = FB_CAP_FOURCC,
+};
+
+static void sh_mobile_lcdc_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ sys_fillrect(info, rect);
+ sh_mobile_lcdc_deferred_io_touch(info);
+}
+
+static void sh_mobile_lcdc_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ sys_copyarea(info, area);
+ sh_mobile_lcdc_deferred_io_touch(info);
+}
+
+static void sh_mobile_lcdc_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+ sys_imageblit(info, image);
+ sh_mobile_lcdc_deferred_io_touch(info);
+}
+
+static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_priv *priv = ch->lcdc;
+ unsigned long ldrcntr;
+ unsigned long new_pan_offset;
+ unsigned long base_addr_y, base_addr_c;
+ unsigned long c_offset;
+
+ if (!ch->format->yuv)
+ new_pan_offset = var->yoffset * ch->pitch
+ + var->xoffset * (ch->format->bpp / 8);
+ else
+ new_pan_offset = var->yoffset * ch->pitch + var->xoffset;
+
+ if (new_pan_offset == ch->pan_offset)
+ return 0; /* No change, do nothing */
+
+ ldrcntr = lcdc_read(priv, _LDRCNTR);
+
+ /* Set the source address for the next refresh */
+ base_addr_y = ch->dma_handle + new_pan_offset;
+ if (ch->format->yuv) {
+ /* Set y offset */
+ c_offset = var->yoffset * ch->pitch
+ * (ch->format->bpp - 8) / 8;
+ base_addr_c = ch->dma_handle + ch->xres * ch->yres_virtual
+ + c_offset;
+ /* Set x offset */
+ if (ch->format->fourcc == V4L2_PIX_FMT_NV24)
+ base_addr_c += 2 * var->xoffset;
+ else
+ base_addr_c += var->xoffset;
+ }
+
+ if (ch->meram) {
+ struct sh_mobile_meram_info *mdev;
+
+ mdev = priv->meram_dev;
+ mdev->ops->meram_update(mdev, ch->meram,
+ base_addr_y, base_addr_c,
+ &base_addr_y, &base_addr_c);
+ }
+
+ ch->base_addr_y = base_addr_y;
+ ch->base_addr_c = base_addr_c;
+
+ lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
+ if (ch->format->yuv)
+ lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
+
+ if (lcdc_chan_is_sublcd(ch))
+ lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
+ else
+ lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
+
+ ch->pan_offset = new_pan_offset;
+
+ sh_mobile_lcdc_deferred_io_touch(info);
+
+ return 0;
+}
+
+static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ int retval;
+
+ switch (cmd) {
+ case FBIO_WAITFORVSYNC:
+ retval = sh_mobile_wait_for_vsync(info->par);
+ break;
+
+ default:
+ retval = -ENOIOCTLCMD;
+ break;
+ }
+ return retval;
+}
+
+static void sh_mobile_fb_reconfig(struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct fb_var_screeninfo var;
+ struct fb_videomode mode;
+ struct fb_event event;
+ int evnt = FB_EVENT_MODE_CHANGE_ALL;
+
+ if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par))
+ /* More framebuffer users are active */
+ return;
+
+ fb_var_to_videomode(&mode, &info->var);
+
+ if (fb_mode_is_equal(&ch->display.mode, &mode))
+ return;
+
+ /* Display has been re-plugged, framebuffer is free now, reconfigure */
+ var = info->var;
+ fb_videomode_to_var(&var, &ch->display.mode);
+ var.width = ch->display.width;
+ var.height = ch->display.height;
+ var.activate = FB_ACTIVATE_NOW;
+
+ if (fb_set_var(info, &var) < 0)
+ /* Couldn't reconfigure, hopefully, can continue as before */
+ return;
+
+ /*
+ * fb_set_var() calls the notifier change internally, only if
+ * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a
+ * user event, we have to call the chain ourselves.
+ */
+ event.info = info;
+ event.data = &ch->display.mode;
+ fb_notifier_call_chain(evnt, &event);
+}
+
+/*
+ * Locking: both .fb_release() and .fb_open() are called with info->lock held if
+ * user == 1, or with console sem held, if user == 0.
+ */
+static int sh_mobile_release(struct fb_info *info, int user)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+
+ mutex_lock(&ch->open_lock);
+ dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
+
+ ch->use_count--;
+
+ /* Nothing to reconfigure, when called from fbcon */
+ if (user) {
+ console_lock();
+ sh_mobile_fb_reconfig(info);
+ console_unlock();
+ }
+
+ mutex_unlock(&ch->open_lock);
+
+ return 0;
+}
+
+static int sh_mobile_open(struct fb_info *info, int user)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+
+ mutex_lock(&ch->open_lock);
+ ch->use_count++;
+
+ dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
+ mutex_unlock(&ch->open_lock);
+
+ return 0;
+}
+
+static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_priv *p = ch->lcdc;
+ unsigned int best_dist = (unsigned int)-1;
+ unsigned int best_xres = 0;
+ unsigned int best_yres = 0;
+ unsigned int i;
+
+ if (var->xres > MAX_XRES || var->yres > MAX_YRES)
+ return -EINVAL;
+
+ /* If board code provides us with a list of available modes, make sure
+ * we use one of them. Find the mode closest to the requested one. The
+ * distance between two modes is defined as the size of the
+ * non-overlapping parts of the two rectangles.
+ */
+ for (i = 0; i < ch->cfg->num_modes; ++i) {
+ const struct fb_videomode *mode = &ch->cfg->lcd_modes[i];
+ unsigned int dist;
+
+ /* We can only round up. */
+ if (var->xres > mode->xres || var->yres > mode->yres)
+ continue;
+
+ dist = var->xres * var->yres + mode->xres * mode->yres
+ - 2 * min(var->xres, mode->xres)
+ * min(var->yres, mode->yres);
+
+ if (dist < best_dist) {
+ best_xres = mode->xres;
+ best_yres = mode->yres;
+ best_dist = dist;
+ }
+ }
+
+ /* If no available mode can be used, return an error. */
+ if (ch->cfg->num_modes != 0) {
+ if (best_dist == (unsigned int)-1)
+ return -EINVAL;
+
+ var->xres = best_xres;
+ var->yres = best_yres;
+ }
+
+ /* Make sure the virtual resolution is at least as big as the visible
+ * resolution.
+ */
+ if (var->xres_virtual < var->xres)
+ var->xres_virtual = var->xres;
+ if (var->yres_virtual < var->yres)
+ var->yres_virtual = var->yres;
+
+ if (sh_mobile_format_is_fourcc(var)) {
+ const struct sh_mobile_lcdc_format_info *format;
+
+ format = sh_mobile_format_info(var->grayscale);
+ if (format == NULL)
+ return -EINVAL;
+ var->bits_per_pixel = format->bpp;
+
+ /* Default to RGB and JPEG color-spaces for RGB and YUV formats
+ * respectively.
+ */
+ if (!format->yuv)
+ var->colorspace = V4L2_COLORSPACE_SRGB;
+ else if (var->colorspace != V4L2_COLORSPACE_REC709)
+ var->colorspace = V4L2_COLORSPACE_JPEG;
+ } else {
+ if (var->bits_per_pixel <= 16) { /* RGB 565 */
+ var->bits_per_pixel = 16;
+ var->red.offset = 11;
+ var->red.length = 5;
+ var->green.offset = 5;
+ var->green.length = 6;
+ var->blue.offset = 0;
+ var->blue.length = 5;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ } else if (var->bits_per_pixel <= 24) { /* RGB 888 */
+ var->bits_per_pixel = 24;
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */
+ var->bits_per_pixel = 32;
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ } else
+ return -EINVAL;
+
+ var->red.msb_right = 0;
+ var->green.msb_right = 0;
+ var->blue.msb_right = 0;
+ var->transp.msb_right = 0;
+ }
+
+ /* Make sure we don't exceed our allocated memory. */
+ if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 >
+ info->fix.smem_len)
+ return -EINVAL;
+
+ /* only accept the forced_fourcc for dual channel configurations */
+ if (p->forced_fourcc &&
+ p->forced_fourcc != sh_mobile_format_fourcc(var))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int sh_mobile_set_par(struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ int ret;
+
+ sh_mobile_lcdc_stop(ch->lcdc);
+
+ ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
+ ch->colorspace = info->var.colorspace;
+
+ ch->xres = info->var.xres;
+ ch->xres_virtual = info->var.xres_virtual;
+ ch->yres = info->var.yres;
+ ch->yres_virtual = info->var.yres_virtual;
+
+ if (ch->format->yuv)
+ ch->pitch = info->var.xres;
+ else
+ ch->pitch = info->var.xres * ch->format->bpp / 8;
+
+ ret = sh_mobile_lcdc_start(ch->lcdc);
+ if (ret < 0)
+ dev_err(info->dev, "%s: unable to restart LCDC\n", __func__);
+
+ info->fix.line_length = ch->pitch;
+
+ if (sh_mobile_format_is_fourcc(&info->var)) {
+ info->fix.type = FB_TYPE_FOURCC;
+ info->fix.visual = FB_VISUAL_FOURCC;
+ } else {
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ }
+
+ return ret;
+}
+
+/*
+ * Screen blanking. Behavior is as follows:
+ * FB_BLANK_UNBLANK: screen unblanked, clocks enabled
+ * FB_BLANK_NORMAL: screen blanked, clocks enabled
+ * FB_BLANK_VSYNC,
+ * FB_BLANK_HSYNC,
+ * FB_BLANK_POWEROFF: screen blanked, clocks disabled
+ */
+static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_priv *p = ch->lcdc;
+
+ /* blank the screen? */
+ if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) {
+ struct fb_fillrect rect = {
+ .width = ch->xres,
+ .height = ch->yres,
+ };
+ sh_mobile_lcdc_fillrect(info, &rect);
+ }
+ /* turn clocks on? */
+ if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) {
+ sh_mobile_lcdc_clk_on(p);
+ }
+ /* turn clocks off? */
+ if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) {
+ /* make sure the screen is updated with the black fill before
+ * switching the clocks off. one vsync is not enough since
+ * blanking may occur in the middle of a refresh. deferred io
+ * mode will reenable the clocks and update the screen in time,
+ * so it does not need this. */
+ if (!info->fbdefio) {
+ sh_mobile_wait_for_vsync(ch);
+ sh_mobile_wait_for_vsync(ch);
+ }
+ sh_mobile_lcdc_clk_off(p);
+ }
+
+ ch->blank_status = blank;
+ return 0;
+}
+
+static struct fb_ops sh_mobile_lcdc_ops = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = sh_mobile_lcdc_setcolreg,
+ .fb_read = fb_sys_read,
+ .fb_write = fb_sys_write,
+ .fb_fillrect = sh_mobile_lcdc_fillrect,
+ .fb_copyarea = sh_mobile_lcdc_copyarea,
+ .fb_imageblit = sh_mobile_lcdc_imageblit,
+ .fb_blank = sh_mobile_lcdc_blank,
+ .fb_pan_display = sh_mobile_fb_pan_display,
+ .fb_ioctl = sh_mobile_ioctl,
+ .fb_open = sh_mobile_open,
+ .fb_release = sh_mobile_release,
+ .fb_check_var = sh_mobile_check_var,
+ .fb_set_par = sh_mobile_set_par,
+};
+
+static void
+sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch)
+{
+ if (ch->info && ch->info->dev)
+ unregister_framebuffer(ch->info);
+}
+
+static int __devinit
+sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch)
+{
+ struct fb_info *info = ch->info;
+ int ret;
+
+ if (info->fbdefio) {
+ ch->sglist = vmalloc(sizeof(struct scatterlist) *
+ ch->fb_size >> PAGE_SHIFT);
+ if (!ch->sglist) {
+ dev_err(ch->lcdc->dev, "cannot allocate sglist\n");
+ return -ENOMEM;
+ }
+ }
+
+ info->bl_dev = ch->bl;
+
+ ret = register_framebuffer(info);
+ if (ret < 0)
+ return ret;
+
+ dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n",
+ dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ?
+ "mainlcd" : "sublcd", info->var.xres, info->var.yres,
+ info->var.bits_per_pixel);
+
+ /* deferred io mode: disable clock to save power */
+ if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
+ sh_mobile_lcdc_clk_off(ch->lcdc);
+
+ return ret;
+}
+
+static void
+sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch)
+{
+ struct fb_info *info = ch->info;
+
+ if (!info || !info->device)
+ return;
+
+ if (ch->sglist)
+ vfree(ch->sglist);
+
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
+}
+
+static int __devinit
+sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
+ const struct fb_videomode *mode,
+ unsigned int num_modes)
+{
+ struct sh_mobile_lcdc_priv *priv = ch->lcdc;
+ struct fb_var_screeninfo *var;
+ struct fb_info *info;
+ int ret;
+
+ /* Allocate and initialize the frame buffer device. Create the modes
+ * list and allocate the color map.
+ */
+ info = framebuffer_alloc(0, priv->dev);
+ if (info == NULL) {
+ dev_err(priv->dev, "unable to allocate fb_info\n");
+ return -ENOMEM;
+ }
+
+ ch->info = info;
+
+ info->flags = FBINFO_FLAG_DEFAULT;
+ info->fbops = &sh_mobile_lcdc_ops;
+ info->device = priv->dev;
+ info->screen_base = ch->fb_mem;
+ info->pseudo_palette = &ch->pseudo_palette;
+ info->par = ch;
+
+ fb_videomode_to_modelist(mode, num_modes, &info->modelist);
+
+ ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
+ if (ret < 0) {
+ dev_err(priv->dev, "unable to allocate cmap\n");
+ return ret;
+ }
+
+ /* Initialize fixed screen information. Restrict pan to 2 lines steps
+ * for NV12 and NV21.
+ */
+ info->fix = sh_mobile_lcdc_fix;
+ info->fix.smem_start = ch->dma_handle;
+ info->fix.smem_len = ch->fb_size;
+ info->fix.line_length = ch->pitch;
+
+ if (ch->format->yuv)
+ info->fix.visual = FB_VISUAL_FOURCC;
+ else
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+
+ if (ch->format->fourcc == V4L2_PIX_FMT_NV12 ||
+ ch->format->fourcc == V4L2_PIX_FMT_NV21)
+ info->fix.ypanstep = 2;
+
+ /* Initialize variable screen information using the first mode as
+ * default. The default Y virtual resolution is twice the panel size to
+ * allow for double-buffering.
+ */
+ var = &info->var;
+ fb_videomode_to_var(var, mode);
+ var->width = ch->cfg->panel_cfg.width;
+ var->height = ch->cfg->panel_cfg.height;
+ var->yres_virtual = var->yres * 2;
+ var->activate = FB_ACTIVATE_NOW;
+
+ /* Use the legacy API by default for RGB formats, and the FOURCC API
+ * for YUV formats.
+ */
+ if (!ch->format->yuv)
+ var->bits_per_pixel = ch->format->bpp;
+ else
+ var->grayscale = ch->format->fourcc;
+
+ ret = sh_mobile_check_var(var, info);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Backlight
+ */
+
+static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
+{
+ struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
+ int brightness = bdev->props.brightness;
+
+ if (bdev->props.power != FB_BLANK_UNBLANK ||
+ bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ return ch->cfg->bl_info.set_brightness(brightness);
+}
+
+static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
+{
+ struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
+
+ return ch->cfg->bl_info.get_brightness();
+}
+
+static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
+ struct fb_info *info)
+{
+ return (info->bl_dev == bdev);
+}
+
+static struct backlight_ops sh_mobile_lcdc_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = sh_mobile_lcdc_update_bl,
+ .get_brightness = sh_mobile_lcdc_get_brightness,
+ .check_fb = sh_mobile_lcdc_check_fb,
+};
+
+static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
+ struct sh_mobile_lcdc_chan *ch)
+{
+ struct backlight_device *bl;
+
+ bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch,
+ &sh_mobile_lcdc_bl_ops, NULL);
+ if (IS_ERR(bl)) {
+ dev_err(parent, "unable to register backlight device: %ld\n",
+ PTR_ERR(bl));
+ return NULL;
+ }
+
+ bl->props.max_brightness = ch->cfg->bl_info.max_brightness;
+ bl->props.brightness = bl->props.max_brightness;
+ backlight_update_status(bl);
+
+ return bl;
+}
+
+static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev)
+{
+ backlight_device_unregister(bdev);
+}
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+static int sh_mobile_lcdc_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ sh_mobile_lcdc_stop(platform_get_drvdata(pdev));
+ return 0;
+}
+
+static int sh_mobile_lcdc_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ return sh_mobile_lcdc_start(platform_get_drvdata(pdev));
+}
+
+static int sh_mobile_lcdc_runtime_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
+
+ /* turn off LCDC hardware */
+ lcdc_write(priv, _LDCNT1R, 0);
+
+ return 0;
+}
+
+static int sh_mobile_lcdc_runtime_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
+
+ __sh_mobile_lcdc_start(priv);
+
+ return 0;
+}
+
+static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
+ .suspend = sh_mobile_lcdc_suspend,
+ .resume = sh_mobile_lcdc_resume,
+ .runtime_suspend = sh_mobile_lcdc_runtime_suspend,
+ .runtime_resume = sh_mobile_lcdc_runtime_resume,
+};
+
+/* -----------------------------------------------------------------------------
+ * Framebuffer notifier
+ */
+
+/* locking: called with info->lock held */
+static int sh_mobile_lcdc_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct fb_event *event = data;
+ struct fb_info *info = event->info;
+ struct sh_mobile_lcdc_chan *ch = info->par;
+
+ if (&ch->lcdc->notifier != nb)
+ return NOTIFY_DONE;
+
+ dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
+ __func__, action, event->data);
+
+ switch(action) {
+ case FB_EVENT_SUSPEND:
+ sh_mobile_lcdc_display_off(ch);
+ sh_mobile_lcdc_stop(ch->lcdc);
+ break;
+ case FB_EVENT_RESUME:
+ mutex_lock(&ch->open_lock);
+ sh_mobile_fb_reconfig(info);
+ mutex_unlock(&ch->open_lock);
+
+ sh_mobile_lcdc_display_on(ch);
+ sh_mobile_lcdc_start(ch->lcdc);
+ }
+
+ return NOTIFY_OK;
+}
+
+/* -----------------------------------------------------------------------------
+ * Probe/remove and driver init/exit
+ */
+
+static const struct fb_videomode default_720p __devinitconst = {
+ .name = "HDMI 720p",
+ .xres = 1280,
+ .yres = 720,
+
+ .left_margin = 220,
+ .right_margin = 110,
+ .hsync_len = 40,
+
+ .upper_margin = 20,
+ .lower_margin = 5,
+ .vsync_len = 5,
+
+ .pixclock = 13468,
+ .refresh = 60,
+ .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
+};
+
+static int sh_mobile_lcdc_remove(struct platform_device *pdev)
+{
+ struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
+ int i;
+
+ fb_unregister_client(&priv->notifier);
+
+ for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
+ sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]);
+
+ sh_mobile_lcdc_stop(priv);
+
+ for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
+ struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
+
+ if (ch->tx_dev) {
+ ch->tx_dev->lcdc = NULL;
+ module_put(ch->cfg->tx_dev->dev.driver->owner);
+ }
+
+ sh_mobile_lcdc_channel_fb_cleanup(ch);
+
+ if (ch->fb_mem)
+ dma_free_coherent(&pdev->dev, ch->fb_size,
+ ch->fb_mem, ch->dma_handle);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
+ if (priv->ch[i].bl)
+ sh_mobile_lcdc_bl_remove(priv->ch[i].bl);
+ }
+
+ if (priv->dot_clk) {
+ pm_runtime_disable(&pdev->dev);
+ clk_put(priv->dot_clk);
+ }
+
+ if (priv->base)
+ iounmap(priv->base);
+
+ if (priv->irq)
+ free_irq(priv->irq, priv);
+ kfree(priv);
+ return 0;
+}
+
+static int __devinit sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
+{
+ int interface_type = ch->cfg->interface_type;
+
+ switch (interface_type) {
+ case RGB8:
+ case RGB9:
+ case RGB12A:
+ case RGB12B:
+ case RGB16:
+ case RGB18:
+ case RGB24:
+ case SYS8A:
+ case SYS8B:
+ case SYS8C:
+ case SYS8D:
+ case SYS9:
+ case SYS12:
+ case SYS16A:
+ case SYS16B:
+ case SYS16C:
+ case SYS18:
+ case SYS24:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* SUBLCD only supports SYS interface */
+ if (lcdc_chan_is_sublcd(ch)) {
+ if (!(interface_type & LDMT1R_IFM))
+ return -EINVAL;
+
+ interface_type &= ~LDMT1R_IFM;
+ }
+
+ ch->ldmt1r_value = interface_type;
+ return 0;
+}
+
+static int __devinit
+sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_priv *priv,
+ struct sh_mobile_lcdc_chan *ch)
+{
+ const struct sh_mobile_lcdc_format_info *format;
+ const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg;
+ const struct fb_videomode *max_mode;
+ const struct fb_videomode *mode;
+ unsigned int num_modes;
+ unsigned int max_size;
+ unsigned int i;
+
+ mutex_init(&ch->open_lock);
+ ch->notify = sh_mobile_lcdc_display_notify;
+
+ /* Validate the format. */
+ format = sh_mobile_format_info(cfg->fourcc);
+ if (format == NULL) {
+ dev_err(priv->dev, "Invalid FOURCC %08x.\n", cfg->fourcc);
+ return -EINVAL;
+ }
+
+ /* Iterate through the modes to validate them and find the highest
+ * resolution.
+ */
+ max_mode = NULL;
+ max_size = 0;
+
+ for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) {
+ unsigned int size = mode->yres * mode->xres;
+
+ /* NV12/NV21 buffers must have even number of lines */
+ if ((cfg->fourcc == V4L2_PIX_FMT_NV12 ||
+ cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) {
+ dev_err(priv->dev, "yres must be multiple of 2 for "
+ "YCbCr420 mode.\n");
+ return -EINVAL;
+ }
+
+ if (size > max_size) {
+ max_mode = mode;
+ max_size = size;
+ }
+ }
+
+ if (!max_size)
+ max_size = MAX_XRES * MAX_YRES;
+ else
+ dev_dbg(priv->dev, "Found largest videomode %ux%u\n",
+ max_mode->xres, max_mode->yres);
+
+ if (cfg->lcd_modes == NULL) {
+ mode = &default_720p;
+ num_modes = 1;
+ } else {
+ mode = cfg->lcd_modes;
+ num_modes = cfg->num_modes;
+ }
+
+ /* Use the first mode as default. */
+ ch->format = format;
+ ch->xres = mode->xres;
+ ch->xres_virtual = mode->xres;
+ ch->yres = mode->yres;
+ ch->yres_virtual = mode->yres * 2;
+
+ if (!format->yuv) {
+ ch->colorspace = V4L2_COLORSPACE_SRGB;
+ ch->pitch = ch->xres * format->bpp / 8;
+ } else {
+ ch->colorspace = V4L2_COLORSPACE_REC709;
+ ch->pitch = ch->xres;
+ }
+
+ ch->display.width = cfg->panel_cfg.width;
+ ch->display.height = cfg->panel_cfg.height;
+ ch->display.mode = *mode;
+
+ /* Allocate frame buffer memory. */
+ ch->fb_size = max_size * format->bpp / 8 * 2;
+ ch->fb_mem = dma_alloc_coherent(priv->dev, ch->fb_size, &ch->dma_handle,
+ GFP_KERNEL);
+ if (ch->fb_mem == NULL) {
+ dev_err(priv->dev, "unable to allocate buffer\n");
+ return -ENOMEM;
+ }
+
+ /* Initialize the transmitter device if present. */
+ if (cfg->tx_dev) {
+ if (!cfg->tx_dev->dev.driver ||
+ !try_module_get(cfg->tx_dev->dev.driver->owner)) {
+ dev_warn(priv->dev,
+ "unable to get transmitter device\n");
+ return -EINVAL;
+ }
+ ch->tx_dev = platform_get_drvdata(cfg->tx_dev);
+ ch->tx_dev->lcdc = ch;
+ ch->tx_dev->def_mode = *mode;
+ }
+
+ return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes);
+}
+
+static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
+{
+ struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
+ struct sh_mobile_lcdc_priv *priv;
+ struct resource *res;
+ int num_channels;
+ int error;
+ int i;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data defined\n");
+ return -EINVAL;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ i = platform_get_irq(pdev, 0);
+ if (!res || i < 0) {
+ dev_err(&pdev->dev, "cannot get platform resources\n");
+ return -ENOENT;
+ }
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(&pdev->dev, "cannot allocate device data\n");
+ return -ENOMEM;
+ }
+
+ priv->dev = &pdev->dev;
+ priv->meram_dev = pdata->meram_dev;
+ platform_set_drvdata(pdev, priv);
+
+ error = request_irq(i, sh_mobile_lcdc_irq, 0,
+ dev_name(&pdev->dev), priv);
+ if (error) {
+ dev_err(&pdev->dev, "unable to request irq\n");
+ goto err1;
+ }
+
+ priv->irq = i;
+ atomic_set(&priv->hw_usecnt, -1);
+
+ for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) {
+ struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels;
+
+ ch->lcdc = priv;
+ ch->cfg = &pdata->ch[i];
+
+ error = sh_mobile_lcdc_check_interface(ch);
+ if (error) {
+ dev_err(&pdev->dev, "unsupported interface type\n");
+ goto err1;
+ }
+ init_waitqueue_head(&ch->frame_end_wait);
+ init_completion(&ch->vsync_completion);
+ ch->pan_offset = 0;
+
+ /* probe the backlight is there is one defined */
+ if (ch->cfg->bl_info.max_brightness)
+ ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch);
+
+ switch (pdata->ch[i].chan) {
+ case LCDC_CHAN_MAINLCD:
+ ch->enabled = LDCNT2R_ME;
+ ch->reg_offs = lcdc_offs_mainlcd;
+ num_channels++;
+ break;
+ case LCDC_CHAN_SUBLCD:
+ ch->enabled = LDCNT2R_SE;
+ ch->reg_offs = lcdc_offs_sublcd;
+ num_channels++;
+ break;
+ }
+ }
+
+ if (!num_channels) {
+ dev_err(&pdev->dev, "no channels defined\n");
+ error = -EINVAL;
+ goto err1;
+ }
+
+ /* for dual channel LCDC (MAIN + SUB) force shared format setting */
+ if (num_channels == 2)
+ priv->forced_fourcc = pdata->ch[0].fourcc;
+
+ priv->base = ioremap_nocache(res->start, resource_size(res));
+ if (!priv->base)
+ goto err1;
+
+ error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source);
+ if (error) {
+ dev_err(&pdev->dev, "unable to setup clocks\n");
+ goto err1;
+ }
+
+ /* Enable runtime PM. */
+ pm_runtime_enable(&pdev->dev);
+
+ for (i = 0; i < num_channels; i++) {
+ struct sh_mobile_lcdc_chan *ch = priv->ch + i;
+
+ error = sh_mobile_lcdc_channel_init(priv, ch);
+ if (error)
+ goto err1;
+ }
+
+ error = sh_mobile_lcdc_start(priv);
+ if (error) {
+ dev_err(&pdev->dev, "unable to start hardware\n");
+ goto err1;
+ }
+
+ for (i = 0; i < num_channels; i++) {
+ struct sh_mobile_lcdc_chan *ch = priv->ch + i;
+
+ error = sh_mobile_lcdc_channel_fb_register(ch);
+ if (error)
+ goto err1;
+ }
+
+ /* Failure ignored */
+ priv->notifier.notifier_call = sh_mobile_lcdc_notify;
+ fb_register_client(&priv->notifier);
+
+ return 0;
+err1:
+ sh_mobile_lcdc_remove(pdev);
+
+ return error;
+}
+
+static struct platform_driver sh_mobile_lcdc_driver = {
+ .driver = {
+ .name = "sh_mobile_lcdc_fb",
+ .owner = THIS_MODULE,
+ .pm = &sh_mobile_lcdc_dev_pm_ops,
+ },
+ .probe = sh_mobile_lcdc_probe,
+ .remove = sh_mobile_lcdc_remove,
+};
+
+module_platform_driver(sh_mobile_lcdc_driver);
+
+MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver");
+MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
+MODULE_LICENSE("GPL v2");