diff options
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 1836 |
1 files changed, 0 insertions, 1836 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c deleted file mode 100644 index aac5b369d73..00000000000 --- a/drivers/video/sh_mobile_lcdcfb.c +++ /dev/null @@ -1,1836 +0,0 @@ -/* - * 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/kernel.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/mm.h> -#include <linux/clk.h> -#include <linux/pm_runtime.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/interrupt.h> -#include <linux/videodev2.h> -#include <linux/vmalloc.h> -#include <linux/ioctl.h> -#include <linux/slab.h> -#include <linux/console.h> -#include <linux/backlight.h> -#include <linux/gpio.h> -#include <linux/module.h> -#include <video/sh_mobile_lcdc.h> -#include <video/sh_mobile_meram.h> -#include <linux/atomic.h> - -#include "sh_mobile_lcdcfb.h" - -#define SIDE_B_OFFSET 0x1000 -#define MIRROR_OFFSET 0x2000 - -#define MAX_XRES 1920 -#define MAX_YRES 1080 - -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 const struct fb_videomode default_720p = { - .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, -}; - -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; -}; - -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 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(); -} - -static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) -{ - return chan->cfg.chan == LCDC_CHAN_SUBLCD; -} - -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_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; -} - -static bool sh_mobile_format_is_yuv(const struct fb_var_screeninfo *var) -{ - if (var->grayscale <= 1) - return false; - - switch (var->grayscale) { - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV21: - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV61: - case V4L2_PIX_FMT_NV24: - case V4L2_PIX_FMT_NV42: - return true; - - default: - return false; - } -} - -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_sginit(struct fb_info *info, - struct list_head *pagelist) -{ - struct sh_mobile_lcdc_chan *ch = info->par; - unsigned int nr_pages_max = info->fix.smem_len >> 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; - struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_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(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); - if (bcfg->start_transfer) - bcfg->start_transfer(bcfg->board_data, ch, - &sh_mobile_lcdc_sys_bus_ops); - lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); - dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); - } else { - if (bcfg->start_transfer) - bcfg->start_transfer(bcfg->board_data, 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 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 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) -{ - struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var; - 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 = display_var->xres + display_var->hsync_len + - display_var->left_margin + display_var->right_margin; - tmp = h_total / 8; /* HTCN */ - tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */ - lcdc_write_chan(ch, LDHCNR, tmp); - - hsync_pos = display_var->xres + display_var->right_margin; - tmp = hsync_pos / 8; /* HSYNP */ - tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */ - lcdc_write_chan(ch, LDHSYNR, tmp); - - /* vertical configuration */ - tmp = display_var->yres + display_var->vsync_len + - display_var->upper_margin + display_var->lower_margin; /* VTLN */ - tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */ - lcdc_write_chan(ch, LDVLNR, tmp); - - tmp = display_var->yres + display_var->lower_margin; /* VSYNP */ - tmp |= display_var->vsync_len << 16; /* VSYNW */ - lcdc_write_chan(ch, LDVSYNR, tmp); - - /* Adjust horizontal synchronisation for HDMI */ - display_h_total = display_var->xres + display_var->hsync_len + - display_var->left_margin + display_var->right_margin; - tmp = ((display_var->xres & 7) << 24) | - ((display_h_total & 7) << 16) | - ((display_var->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); - - switch (sh_mobile_format_fourcc(&ch->info->var)) { - case V4L2_PIX_FMT_RGB565: - tmp = LDDFR_PKF_RGB16; - break; - case V4L2_PIX_FMT_BGR24: - tmp = LDDFR_PKF_RGB24; - break; - case V4L2_PIX_FMT_BGR32: - tmp = LDDFR_PKF_ARGB32; - break; - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV21: - tmp = LDDFR_CC | LDDFR_YF_420; - break; - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV61: - tmp = LDDFR_CC | LDDFR_YF_422; - break; - case V4L2_PIX_FMT_NV24: - case V4L2_PIX_FMT_NV42: - tmp = LDDFR_CC | LDDFR_YF_444; - break; - } - - if (sh_mobile_format_is_yuv(&ch->info->var)) { - switch (ch->info->var.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->pitch); - lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); - if (sh_mobile_format_is_yuv(&ch->info->var)) - 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 (sh_mobile_format_fourcc(&priv->ch[0].info->var)) { - 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_board_cfg *board_cfg; - 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++) { - ch = &priv->ch[k]; - - if (!ch->enabled) - continue; - - board_cfg = &ch->cfg.board_cfg; - if (board_cfg->setup_sys) { - ret = board_cfg->setup_sys(board_cfg->board_data, 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++) { - struct sh_mobile_meram_cfg *cfg; - int pixelformat; - - ch = &priv->ch[k]; - if (!ch->enabled) - continue; - - ch->base_addr_y = ch->info->fix.smem_start; - ch->base_addr_c = ch->base_addr_y - + ch->info->var.xres - * ch->info->var.yres_virtual; - ch->pitch = ch->info->fix.line_length; - - /* Enable MERAM if possible. */ - cfg = ch->cfg.meram_cfg; - if (mdev == NULL || mdev->ops == NULL || cfg == NULL) - continue; - - /* we need to de-init configured ICBs before we can - * re-initialize them. - */ - if (ch->meram_enabled) { - mdev->ops->meram_unregister(mdev, cfg); - ch->meram_enabled = 0; - } - - switch (sh_mobile_format_fourcc(&ch->info->var)) { - 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; - } - - ret = mdev->ops->meram_register(mdev, cfg, ch->pitch, - ch->info->var.yres, pixelformat, - ch->base_addr_y, ch->base_addr_c, - &ch->base_addr_y, &ch->base_addr_c, - &ch->pitch); - if (!ret) - ch->meram_enabled = 1; - } - - /* 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); - } - - board_cfg = &ch->cfg.board_cfg; - if (board_cfg->display_on && try_module_get(board_cfg->owner)) { - board_cfg->display_on(board_cfg->board_data, ch->info); - module_put(board_cfg->owner); - } - - 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; - struct sh_mobile_lcdc_board_cfg *board_cfg; - 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); - } - - board_cfg = &ch->cfg.board_cfg; - if (board_cfg->display_off && try_module_get(board_cfg->owner)) { - board_cfg->display_off(board_cfg->board_data); - module_put(board_cfg->owner); - } - - /* disable the meram */ - if (ch->meram_enabled) { - struct sh_mobile_meram_cfg *cfg; - struct sh_mobile_meram_info *mdev; - cfg = ch->cfg.meram_cfg; - mdev = priv->meram_dev; - mdev->ops->meram_unregister(mdev, cfg); - ch->meram_enabled = 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); -} - -static int 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 sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, - int clock_source, - struct sh_mobile_lcdc_priv *priv) -{ - 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) { - priv->dot_clk = clk_get(&pdev->dev, str); - if (IS_ERR(priv->dot_clk)) { - dev_err(&pdev->dev, "cannot get dot clock %s\n", str); - return PTR_ERR(priv->dot_clk); - } - } - - /* Runtime PM support involves two step for this driver: - * 1) Enable Runtime PM - * 2) Force Runtime PM Resume since hardware is accessed from probe() - */ - priv->dev = &pdev->dev; - pm_runtime_enable(priv->dev); - pm_runtime_resume(priv->dev); - return 0; -} - -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; - bool yuv = sh_mobile_format_is_yuv(&info->var); - - if (!yuv) - new_pan_offset = var->yoffset * info->fix.line_length - + var->xoffset * (info->var.bits_per_pixel / 8); - else - new_pan_offset = var->yoffset * info->fix.line_length - + 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 (yuv) { - /* Set y offset */ - c_offset = var->yoffset * info->fix.line_length - * (info->var.bits_per_pixel - 8) / 8; - base_addr_c = ch->dma_handle - + info->var.xres * info->var.yres_virtual - + c_offset; - /* Set x offset */ - if (sh_mobile_format_fourcc(&info->var) == V4L2_PIX_FMT_NV24) - base_addr_c += 2 * var->xoffset; - else - base_addr_c += var->xoffset; - } - - if (ch->meram_enabled) { - struct sh_mobile_meram_cfg *cfg; - struct sh_mobile_meram_info *mdev; - int ret; - - cfg = ch->cfg.meram_cfg; - mdev = priv->meram_dev; - ret = mdev->ops->meram_update(mdev, cfg, - base_addr_y, base_addr_c, - &base_addr_y, &base_addr_c); - if (ret) - return ret; - } - - ch->base_addr_y = base_addr_y; - ch->base_addr_c = base_addr_c; - - lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); - if (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_wait_for_vsync(struct fb_info *info) -{ - struct sh_mobile_lcdc_chan *ch = info->par; - 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 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); - 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_videomode mode1, mode2; - 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(&mode1, &ch->display_var); - fb_var_to_videomode(&mode2, &info->var); - - if (fb_mode_is_equal(&mode1, &mode2)) - return; - - /* Display has been re-plugged, framebuffer is free now, reconfigure */ - if (fb_set_var(info, &ch->display_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 = &mode1; - 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_cfg; ++i) { - const struct fb_videomode *mode = &ch->cfg.lcd_cfg[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_cfg != 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)) { - switch (var->grayscale) { - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV21: - var->bits_per_pixel = 12; - break; - case V4L2_PIX_FMT_RGB565: - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV61: - var->bits_per_pixel = 16; - break; - case V4L2_PIX_FMT_BGR24: - case V4L2_PIX_FMT_NV24: - case V4L2_PIX_FMT_NV42: - var->bits_per_pixel = 24; - break; - case V4L2_PIX_FMT_BGR32: - var->bits_per_pixel = 32; - break; - default: - return -EINVAL; - } - - /* Default to RGB and JPEG color-spaces for RGB and YUV formats - * respectively. - */ - if (!sh_mobile_format_is_yuv(var)) - 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; - u32 line_length = info->fix.line_length; - int ret; - - sh_mobile_lcdc_stop(ch->lcdc); - - if (sh_mobile_format_is_yuv(&info->var)) - info->fix.line_length = info->var.xres; - else - info->fix.line_length = info->var.xres - * info->var.bits_per_pixel / 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 = line_length; - } - - 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 = info->var.xres, - .height = info->var.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(info); - sh_mobile_wait_for_vsync(info); - } - 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 int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) -{ - struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); - struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; - int brightness = bdev->props.brightness; - - if (bdev->props.power != FB_BLANK_UNBLANK || - bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) - brightness = 0; - - return cfg->set_brightness(cfg->board_data, brightness); -} - -static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) -{ - struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); - struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; - - return cfg->get_brightness(cfg->board_data); -} - -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); -} - -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, -}; - -/* 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; - struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; - - 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: - if (board_cfg->display_off && try_module_get(board_cfg->owner)) { - board_cfg->display_off(board_cfg->board_data); - module_put(board_cfg->owner); - } - 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); - - /* HDMI must be enabled before LCDC configuration */ - if (board_cfg->display_on && try_module_get(board_cfg->owner)) { - board_cfg->display_on(board_cfg->board_data, info); - module_put(board_cfg->owner); - } - - sh_mobile_lcdc_start(ch->lcdc); - } - - return NOTIFY_OK; -} - -static int sh_mobile_lcdc_remove(struct platform_device *pdev) -{ - struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); - struct fb_info *info; - int i; - - fb_unregister_client(&priv->notifier); - - for (i = 0; i < ARRAY_SIZE(priv->ch); i++) - if (priv->ch[i].info && priv->ch[i].info->dev) - unregister_framebuffer(priv->ch[i].info); - - sh_mobile_lcdc_stop(priv); - - for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { - info = priv->ch[i].info; - - if (!info || !info->device) - continue; - - if (priv->ch[i].sglist) - vfree(priv->ch[i].sglist); - - if (info->screen_base) - dma_free_coherent(&pdev->dev, info->fix.smem_len, - info->screen_base, - priv->ch[i].dma_handle); - fb_dealloc_cmap(&info->cmap); - framebuffer_release(info); - } - - 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) - clk_put(priv->dot_clk); - - if (priv->dev) - pm_runtime_disable(priv->dev); - - if (priv->base) - iounmap(priv->base); - - if (priv->irq) - free_irq(priv->irq, priv); - kfree(priv); - return 0; -} - -static int __devinit sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch, - struct device *dev) -{ - struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg; - const struct fb_videomode *max_mode; - const struct fb_videomode *mode; - struct fb_var_screeninfo *var; - struct fb_info *info; - unsigned int max_size; - int num_cfg; - void *buf; - int ret; - int i; - - mutex_init(&ch->open_lock); - - /* Allocate the frame buffer device. */ - ch->info = framebuffer_alloc(0, dev); - if (!ch->info) { - dev_err(dev, "unable to allocate fb_info\n"); - return -ENOMEM; - } - - info = ch->info; - info->fbops = &sh_mobile_lcdc_ops; - info->par = ch; - info->pseudo_palette = &ch->pseudo_palette; - info->flags = FBINFO_FLAG_DEFAULT; - - /* Iterate through the modes to validate them and find the highest - * resolution. - */ - max_mode = NULL; - max_size = 0; - - for (i = 0, mode = cfg->lcd_cfg; i < cfg->num_cfg; 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(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(dev, "Found largest videomode %ux%u\n", - max_mode->xres, max_mode->yres); - - /* Create the mode list. */ - if (cfg->lcd_cfg == NULL) { - mode = &default_720p; - num_cfg = 1; - } else { - mode = cfg->lcd_cfg; - num_cfg = cfg->num_cfg; - } - - fb_videomode_to_modelist(mode, num_cfg, &info->modelist); - - /* 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 = cfg->lcd_size_cfg.width; - var->height = cfg->lcd_size_cfg.height; - var->yres_virtual = var->yres * 2; - var->activate = FB_ACTIVATE_NOW; - - switch (cfg->fourcc) { - case V4L2_PIX_FMT_RGB565: - var->bits_per_pixel = 16; - break; - case V4L2_PIX_FMT_BGR24: - var->bits_per_pixel = 24; - break; - case V4L2_PIX_FMT_BGR32: - var->bits_per_pixel = 32; - break; - default: - var->grayscale = cfg->fourcc; - break; - } - - /* Make sure the memory size check won't fail. smem_len is initialized - * later based on var. - */ - info->fix.smem_len = UINT_MAX; - ret = sh_mobile_check_var(var, info); - if (ret) - return ret; - - max_size = max_size * var->bits_per_pixel / 8 * 2; - - /* Allocate frame buffer memory and color map. */ - buf = dma_alloc_coherent(dev, max_size, &ch->dma_handle, GFP_KERNEL); - if (!buf) { - dev_err(dev, "unable to allocate buffer\n"); - return -ENOMEM; - } - - ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); - if (ret < 0) { - dev_err(dev, "unable to allocate cmap\n"); - dma_free_coherent(dev, max_size, buf, ch->dma_handle); - 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 = max_size; - if (cfg->fourcc == V4L2_PIX_FMT_NV12 || - cfg->fourcc == V4L2_PIX_FMT_NV21) - info->fix.ypanstep = 2; - - if (sh_mobile_format_is_yuv(var)) { - info->fix.line_length = var->xres; - info->fix.visual = FB_VISUAL_FOURCC; - } else { - info->fix.line_length = var->xres * var->bits_per_pixel / 8; - info->fix.visual = FB_VISUAL_TRUECOLOR; - } - - info->screen_base = buf; - info->device = dev; - ch->display_var = *var; - - return 0; -} - -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; - } - - 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; - memcpy(&ch->cfg, &pdata->ch[i], sizeof(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(pdev, pdata->clock_source, priv); - if (error) { - dev_err(&pdev->dev, "unable to setup clocks\n"); - goto err1; - } - - priv->meram_dev = pdata->meram_dev; - - for (i = 0; i < num_channels; i++) { - struct sh_mobile_lcdc_chan *ch = priv->ch + i; - - error = sh_mobile_lcdc_channel_init(ch, &pdev->dev); - 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; - struct fb_info *info = ch->info; - - if (info->fbdefio) { - ch->sglist = vmalloc(sizeof(struct scatterlist) * - info->fix.smem_len >> PAGE_SHIFT); - if (!ch->sglist) { - dev_err(&pdev->dev, "cannot allocate sglist\n"); - goto err1; - } - } - - info->bl_dev = ch->bl; - - error = register_framebuffer(info); - if (error < 0) - goto err1; - - dev_info(info->dev, "registered %s/%s as %dx%d %dbpp.\n", - pdev->name, (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(priv); - } - - /* 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"); |