diff options
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 883 |
1 files changed, 0 insertions, 883 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c deleted file mode 100644 index 2c5d069e5f0..00000000000 --- a/drivers/video/sh_mobile_lcdcfb.c +++ /dev/null @@ -1,883 +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/fb.h> -#include <linux/clk.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/interrupt.h> -#include <video/sh_mobile_lcdc.h> -#include <asm/atomic.h> - -#define PALETTE_NR 16 - -struct sh_mobile_lcdc_priv; -struct sh_mobile_lcdc_chan { - struct sh_mobile_lcdc_priv *lcdc; - unsigned long *reg_offs; - unsigned long ldmt1r_value; - unsigned long enabled; /* ME and SE in LDCNT2R */ - struct sh_mobile_lcdc_chan_cfg cfg; - u32 pseudo_palette[PALETTE_NR]; - struct fb_info info; - dma_addr_t dma_handle; - struct fb_deferred_io defio; -}; - -struct sh_mobile_lcdc_priv { - void __iomem *base; - int irq; -#ifdef CONFIG_HAVE_CLK - atomic_t clk_usecnt; - struct clk *dot_clk; - struct clk *clk; -#endif - unsigned long lddckr; - struct sh_mobile_lcdc_chan ch[2]; -}; - -/* shared registers */ -#define _LDDCKR 0x410 -#define _LDDCKSTPR 0x414 -#define _LDINTR 0x468 -#define _LDSR 0x46c -#define _LDCNT1R 0x470 -#define _LDCNT2R 0x474 -#define _LDDDSR 0x47c -#define _LDDWD0R 0x800 -#define _LDDRDR 0x840 -#define _LDDWAR 0x900 -#define _LDDRAR 0x904 - -/* per-channel registers */ -enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R, - LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR }; - -static unsigned long lcdc_offs_mainlcd[] = { - [LDDCKPAT1R] = 0x400, - [LDDCKPAT2R] = 0x404, - [LDMT1R] = 0x418, - [LDMT2R] = 0x41c, - [LDMT3R] = 0x420, - [LDDFR] = 0x424, - [LDSM1R] = 0x428, - [LDSM2R] = 0x42c, - [LDSA1R] = 0x430, - [LDMLSR] = 0x438, - [LDHCNR] = 0x448, - [LDHSYNR] = 0x44c, - [LDVLNR] = 0x450, - [LDVSYNR] = 0x454, - [LDPMR] = 0x460, -}; - -static unsigned long lcdc_offs_sublcd[] = { - [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, -}; - -#define START_LCDC 0x00000001 -#define LCDC_RESET 0x00000100 -#define DISPLAY_BEU 0x00000008 -#define LCDC_ENABLE 0x00000001 -#define LDINTR_FE 0x00000400 -#define LDINTR_FS 0x00000004 - -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]); -} - -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 | 0x10000000); - lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); - lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 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 | 0x11000000); - lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); - lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); -} - -static unsigned long lcdc_sys_read_data(void *handle) -{ - struct sh_mobile_lcdc_chan *ch = handle; - - lcdc_write(ch->lcdc, _LDDRDR, 0x01000000); - lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); - lcdc_write(ch->lcdc, _LDDRAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); - udelay(1); - - return lcdc_read(ch->lcdc, _LDDRDR) & 0xffff; -} - -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, -}; - -#ifdef CONFIG_HAVE_CLK -static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) -{ - if (atomic_inc_and_test(&priv->clk_usecnt)) { - clk_enable(priv->clk); - if (priv->dot_clk) - clk_enable(priv->dot_clk); - } -} - -static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) -{ - if (atomic_sub_return(1, &priv->clk_usecnt) == -1) { - if (priv->dot_clk) - clk_disable(priv->dot_clk); - clk_disable(priv->clk); - } -} -#else -static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) {} -static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) {} -#endif - -static void sh_mobile_lcdc_deferred_io(struct fb_info *info, - struct list_head *pagelist) -{ - struct sh_mobile_lcdc_chan *ch = info->par; - - /* enable clocks before accessing hardware */ - sh_mobile_lcdc_clk_on(ch->lcdc); - - /* trigger panel update */ - lcdc_write_chan(ch, LDSM2R, 1); -} - -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; - unsigned long tmp; - - /* acknowledge interrupt */ - tmp = lcdc_read(priv, _LDINTR); - tmp &= 0xffffff00; /* mask in high 24 bits */ - tmp |= 0x000000ff ^ LDINTR_FS; /* status in low 8 */ - lcdc_write(priv, _LDINTR, tmp); - - /* disable clocks */ - sh_mobile_lcdc_clk_off(priv); - 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 | START_LCDC); - else - lcdc_write(priv, _LDCNT2R, tmp & ~START_LCDC); - - /* 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) & 3; - if (start && tmp == 3) - break; - if (!start && tmp == 0) - break; - cpu_relax(); - } - - if (!start) - lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ -} - -static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) -{ - struct sh_mobile_lcdc_chan *ch; - struct fb_videomode *lcd_cfg; - struct sh_mobile_lcdc_board_cfg *board_cfg; - unsigned long tmp; - int k, m; - int ret = 0; - - /* 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) | LCDC_RESET); - lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0); - - /* enable LCDC channels */ - tmp = lcdc_read(priv, _LDCNT2R); - tmp |= priv->ch[0].enabled; - tmp |= priv->ch[1].enabled; - lcdc_write(priv, _LDCNT2R, tmp); - - /* read data from external memory, avoid using the BEU for now */ - lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) & ~DISPLAY_BEU); - - /* stop the lcdc first */ - sh_mobile_lcdc_start_stop(priv, 0); - - /* configure clocks */ - tmp = priv->lddckr; - for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { - ch = &priv->ch[k]; - - if (!priv->ch[k].enabled) - continue; - - m = ch->cfg.clock_divider; - if (!m) - continue; - - if (m == 1) - m = 1 << 6; - tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); - - lcdc_write_chan(ch, LDDCKPAT1R, 0x00000000); - lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); - } - - lcdc_write(priv, _LDDCKR, tmp); - - /* start dotclock again */ - lcdc_write(priv, _LDDCKSTPR, 0); - lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); - - /* interrupts are disabled to begin with */ - lcdc_write(priv, _LDINTR, 0); - - for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { - ch = &priv->ch[k]; - lcd_cfg = &ch->cfg.lcd_cfg; - - if (!ch->enabled) - continue; - - tmp = ch->ldmt1r_value; - tmp |= (lcd_cfg->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; - tmp |= (lcd_cfg->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 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 */ - tmp = lcd_cfg->xres + lcd_cfg->hsync_len; - tmp += lcd_cfg->left_margin; - tmp += lcd_cfg->right_margin; - tmp /= 8; /* HTCN */ - tmp |= (lcd_cfg->xres / 8) << 16; /* HDCN */ - lcdc_write_chan(ch, LDHCNR, tmp); - - tmp = lcd_cfg->xres; - tmp += lcd_cfg->right_margin; - tmp /= 8; /* HSYNP */ - tmp |= (lcd_cfg->hsync_len / 8) << 16; /* HSYNW */ - lcdc_write_chan(ch, LDHSYNR, tmp); - - /* power supply */ - lcdc_write_chan(ch, LDPMR, 0); - - /* vertical configuration */ - tmp = lcd_cfg->yres + lcd_cfg->vsync_len; - tmp += lcd_cfg->upper_margin; - tmp += lcd_cfg->lower_margin; /* VTLN */ - tmp |= lcd_cfg->yres << 16; /* VDLN */ - lcdc_write_chan(ch, LDVLNR, tmp); - - tmp = lcd_cfg->yres; - tmp += lcd_cfg->lower_margin; /* VSYNP */ - tmp |= lcd_cfg->vsync_len << 16; /* VSYNW */ - lcdc_write_chan(ch, LDVSYNR, tmp); - - 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; - } - - /* word and long word swap */ - lcdc_write(priv, _LDDDSR, lcdc_read(priv, _LDDDSR) | 6); - - for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { - ch = &priv->ch[k]; - - if (!priv->ch[k].enabled) - continue; - - /* set bpp format in PKF[4:0] */ - tmp = lcdc_read_chan(ch, LDDFR); - tmp &= ~(0x0001001f); - tmp |= (priv->ch[k].info.var.bits_per_pixel == 16) ? 3 : 0; - lcdc_write_chan(ch, LDDFR, tmp); - - /* point out our frame buffer */ - lcdc_write_chan(ch, LDSA1R, ch->info.fix.smem_start); - - /* set line size */ - lcdc_write_chan(ch, LDMLSR, ch->info.fix.line_length); - - /* setup deferred io if SYS bus */ - tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; - if (ch->ldmt1r_value & (1 << 12) && 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); - - /* one-shot mode */ - lcdc_write_chan(ch, LDSM1R, 1); - - /* enable "Frame End Interrupt Enable" bit */ - lcdc_write(priv, _LDINTR, LDINTR_FE); - - } else { - /* continuous read mode */ - lcdc_write_chan(ch, LDSM1R, 0); - } - } - - /* display output */ - lcdc_write(priv, _LDCNT1R, LCDC_ENABLE); - - /* start the lcdc */ - sh_mobile_lcdc_start_stop(priv, 1); - - /* tell the board code to enable the panel */ - for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { - ch = &priv->ch[k]; - board_cfg = &ch->cfg.board_cfg; - if (board_cfg->display_on) - board_cfg->display_on(board_cfg->board_data); - } - - 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; - - /* tell the board code to disable the panel */ - for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { - ch = &priv->ch[k]; - board_cfg = &ch->cfg.board_cfg; - if (board_cfg->display_off) - board_cfg->display_off(board_cfg->board_data); - - /* cleanup deferred io if enabled */ - if (ch->info.fbdefio) { - fb_deferred_io_cleanup(&ch->info); - ch->info.fbdefio = NULL; - } - } - - /* stop the lcdc */ - sh_mobile_lcdc_start_stop(priv, 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 ifm, miftyp; - - switch (ch->cfg.interface_type) { - case RGB8: ifm = 0; miftyp = 0; break; - case RGB9: ifm = 0; miftyp = 4; break; - case RGB12A: ifm = 0; miftyp = 5; break; - case RGB12B: ifm = 0; miftyp = 6; break; - case RGB16: ifm = 0; miftyp = 7; break; - case RGB18: ifm = 0; miftyp = 10; break; - case RGB24: ifm = 0; miftyp = 11; break; - case SYS8A: ifm = 1; miftyp = 0; break; - case SYS8B: ifm = 1; miftyp = 1; break; - case SYS8C: ifm = 1; miftyp = 2; break; - case SYS8D: ifm = 1; miftyp = 3; break; - case SYS9: ifm = 1; miftyp = 4; break; - case SYS12: ifm = 1; miftyp = 5; break; - case SYS16A: ifm = 1; miftyp = 7; break; - case SYS16B: ifm = 1; miftyp = 8; break; - case SYS16C: ifm = 1; miftyp = 9; break; - case SYS18: ifm = 1; miftyp = 10; break; - case SYS24: ifm = 1; miftyp = 11; break; - default: goto bad; - } - - /* SUBLCD only supports SYS interface */ - if (lcdc_chan_is_sublcd(ch)) { - if (ifm == 0) - goto bad; - else - ifm = 0; - } - - ch->ldmt1r_value = (ifm << 12) | miftyp; - return 0; - bad: - return -EINVAL; -} - -static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, - int clock_source, - struct sh_mobile_lcdc_priv *priv) -{ -#ifdef CONFIG_HAVE_CLK - char clk_name[8]; -#endif - char *str; - int icksel; - - switch (clock_source) { - case LCDC_CLK_BUS: str = "bus_clk"; icksel = 0; break; - case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; icksel = 1; break; - case LCDC_CLK_EXTERNAL: str = NULL; icksel = 2; break; - default: - return -EINVAL; - } - - priv->lddckr = icksel << 16; - -#ifdef CONFIG_HAVE_CLK - atomic_set(&priv->clk_usecnt, -1); - snprintf(clk_name, sizeof(clk_name), "lcdc%d", pdev->id); - priv->clk = clk_get(&pdev->dev, clk_name); - if (IS_ERR(priv->clk)) { - dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name); - return PTR_ERR(priv->clk); - } - - 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); - clk_put(priv->clk); - return PTR_ERR(priv->dot_clk); - } - } -#endif - - 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, -}; - -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 struct fb_ops sh_mobile_lcdc_ops = { - .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, -}; - -static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) -{ - switch (bpp) { - case 16: /* PKF[4:0] = 00011 - RGB 565 */ - 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; - break; - - case 32: /* PKF[4:0] = 00000 - RGB 888 - * sh7722 pdf says 00RRGGBB but reality is GGBB00RR - * this may be because LDDDSR has word swap enabled.. - */ - var->red.offset = 0; - var->red.length = 8; - var->green.offset = 24; - var->green.length = 8; - var->blue.offset = 16; - var->blue.length = 8; - var->transp.offset = 0; - var->transp.length = 0; - break; - default: - return -EINVAL; - } - var->bits_per_pixel = bpp; - var->red.msb_right = 0; - var->green.msb_right = 0; - var->blue.msb_right = 0; - var->transp.msb_right = 0; - return 0; -} - -static int sh_mobile_lcdc_remove(struct platform_device *pdev); - -static int __init sh_mobile_lcdc_probe(struct platform_device *pdev) -{ - struct fb_info *info; - struct sh_mobile_lcdc_priv *priv; - struct sh_mobile_lcdc_info *pdata; - struct sh_mobile_lcdc_chan_cfg *cfg; - struct resource *res; - int error; - void *buf; - int i, j; - - if (!pdev->dev.platform_data) { - dev_err(&pdev->dev, "no platform data defined\n"); - error = -EINVAL; - goto err0; - } - - 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"); - error = -ENOENT; - goto err0; - } - - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) { - dev_err(&pdev->dev, "cannot allocate device data\n"); - error = -ENOMEM; - goto err0; - } - - error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, - pdev->dev.bus_id, priv); - if (error) { - dev_err(&pdev->dev, "unable to request irq\n"); - goto err1; - } - - priv->irq = i; - platform_set_drvdata(pdev, priv); - pdata = pdev->dev.platform_data; - - j = 0; - for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { - priv->ch[j].lcdc = priv; - memcpy(&priv->ch[j].cfg, &pdata->ch[i], sizeof(pdata->ch[i])); - - error = sh_mobile_lcdc_check_interface(&priv->ch[i]); - if (error) { - dev_err(&pdev->dev, "unsupported interface type\n"); - goto err1; - } - - switch (pdata->ch[i].chan) { - case LCDC_CHAN_MAINLCD: - priv->ch[j].enabled = 1 << 1; - priv->ch[j].reg_offs = lcdc_offs_mainlcd; - j++; - break; - case LCDC_CHAN_SUBLCD: - priv->ch[j].enabled = 1 << 2; - priv->ch[j].reg_offs = lcdc_offs_sublcd; - j++; - break; - } - } - - if (!j) { - dev_err(&pdev->dev, "no channels defined\n"); - error = -EINVAL; - 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->base = ioremap_nocache(res->start, (res->end - res->start) + 1); - - for (i = 0; i < j; i++) { - info = &priv->ch[i].info; - cfg = &priv->ch[i].cfg; - - info->fbops = &sh_mobile_lcdc_ops; - info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres; - info->var.yres = info->var.yres_virtual = cfg->lcd_cfg.yres; - info->var.width = cfg->lcd_size_cfg.width; - info->var.height = cfg->lcd_size_cfg.height; - info->var.activate = FB_ACTIVATE_NOW; - error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp); - if (error) - break; - - info->fix = sh_mobile_lcdc_fix; - info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8); - info->fix.smem_len = info->fix.line_length * cfg->lcd_cfg.yres; - - buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, - &priv->ch[i].dma_handle, GFP_KERNEL); - if (!buf) { - dev_err(&pdev->dev, "unable to allocate buffer\n"); - error = -ENOMEM; - break; - } - - info->pseudo_palette = &priv->ch[i].pseudo_palette; - info->flags = FBINFO_FLAG_DEFAULT; - - error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); - if (error < 0) { - dev_err(&pdev->dev, "unable to allocate cmap\n"); - dma_free_coherent(&pdev->dev, info->fix.smem_len, - buf, priv->ch[i].dma_handle); - break; - } - - memset(buf, 0, info->fix.smem_len); - info->fix.smem_start = priv->ch[i].dma_handle; - info->screen_base = buf; - info->device = &pdev->dev; - info->par = &priv->ch[i]; - } - - 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 < j; i++) { - error = register_framebuffer(&priv->ch[i].info); - if (error < 0) - goto err1; - } - - for (i = 0; i < j; i++) { - info = &priv->ch[i].info; - dev_info(info->dev, - "registered %s/%s as %dx%d %dbpp.\n", - pdev->name, - (priv->ch[i].cfg.chan == LCDC_CHAN_MAINLCD) ? - "mainlcd" : "sublcd", - (int) priv->ch[i].cfg.lcd_cfg.xres, - (int) priv->ch[i].cfg.lcd_cfg.yres, - priv->ch[i].cfg.bpp); - - /* deferred io mode: disable clock to save power */ - if (info->fbdefio) - sh_mobile_lcdc_clk_off(priv); - } - - return 0; - err1: - sh_mobile_lcdc_remove(pdev); - err0: - return error; -} - -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; - - for (i = 0; i < ARRAY_SIZE(priv->ch); i++) - if (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->device) - continue; - - dma_free_coherent(&pdev->dev, info->fix.smem_len, - info->screen_base, priv->ch[i].dma_handle); - fb_dealloc_cmap(&info->cmap); - } - -#ifdef CONFIG_HAVE_CLK - if (priv->dot_clk) - clk_put(priv->dot_clk); - clk_put(priv->clk); -#endif - - if (priv->base) - iounmap(priv->base); - - if (priv->irq) - free_irq(priv->irq, priv); - kfree(priv); - return 0; -} - -static struct platform_driver sh_mobile_lcdc_driver = { - .driver = { - .name = "sh_mobile_lcdc_fb", - .owner = THIS_MODULE, - }, - .probe = sh_mobile_lcdc_probe, - .remove = sh_mobile_lcdc_remove, -}; - -static int __init sh_mobile_lcdc_init(void) -{ - return platform_driver_register(&sh_mobile_lcdc_driver); -} - -static void __exit sh_mobile_lcdc_exit(void) -{ - platform_driver_unregister(&sh_mobile_lcdc_driver); -} - -module_init(sh_mobile_lcdc_init); -module_exit(sh_mobile_lcdc_exit); - -MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); -MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); -MODULE_LICENSE("GPL v2"); |