diff options
Diffstat (limited to 'drivers/video/s3c-fb.c')
| -rw-r--r-- | drivers/video/s3c-fb.c | 811 |
1 files changed, 743 insertions, 68 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c index 9682ecc60e1..f9aca9d13d1 100644 --- a/drivers/video/s3c-fb.c +++ b/drivers/video/s3c-fb.c @@ -1,7 +1,7 @@ /* linux/drivers/video/s3c-fb.c * * Copyright 2008 Openmoko Inc. - * Copyright 2008 Simtec Electronics + * Copyright 2008-2010 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * http://armlinux.simtec.co.uk/ * @@ -9,7 +9,7 @@ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. + * published by the Free Software FoundatIon. */ #include <linux/kernel.h> @@ -21,9 +21,11 @@ #include <linux/clk.h> #include <linux/fb.h> #include <linux/io.h> +#include <linux/uaccess.h> +#include <linux/interrupt.h> #include <mach/map.h> -#include <mach/regs-fb.h> +#include <plat/regs-fb-v4.h> #include <plat/fb.h> /* This driver will export a number of framebuffer interfaces depending @@ -36,9 +38,9 @@ * output timings and as the control for the output power-down state. */ -/* note, some of the functions that get called are derived from including - * <mach/regs-fb.h> as they are specific to the architecture that the code - * is being built for. +/* note, the previous use of <mach/regs-fb.h> to get platform specific data + * has been replaced by using the platform device name to pick the correct + * configuration data for the system. */ #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE @@ -48,13 +50,108 @@ __raw_writel(v, r); } while(0) #endif /* FB_S3C_DEBUG_REGWRITE */ +/* irq_flags bits */ +#define S3C_FB_VSYNC_IRQ_EN 0 + +#define VSYNC_TIMEOUT_MSEC 50 + struct s3c_fb; +#define VALID_BPP(x) (1 << ((x) - 1)) + +#define OSD_BASE(win, variant) ((variant).osd + ((win) * (variant).osd_stride)) +#define VIDOSD_A(win, variant) (OSD_BASE(win, variant) + 0x00) +#define VIDOSD_B(win, variant) (OSD_BASE(win, variant) + 0x04) +#define VIDOSD_C(win, variant) (OSD_BASE(win, variant) + 0x08) +#define VIDOSD_D(win, variant) (OSD_BASE(win, variant) + 0x0C) + +/** + * struct s3c_fb_variant - fb variant information + * @is_2443: Set if S3C2443/S3C2416 style hardware. + * @nr_windows: The number of windows. + * @vidtcon: The base for the VIDTCONx registers + * @wincon: The base for the WINxCON registers. + * @winmap: The base for the WINxMAP registers. + * @keycon: The abse for the WxKEYCON registers. + * @buf_start: Offset of buffer start registers. + * @buf_size: Offset of buffer size registers. + * @buf_end: Offset of buffer end registers. + * @osd: The base for the OSD registers. + * @palette: Address of palette memory, or 0 if none. + * @has_prtcon: Set if has PRTCON register. + * @has_shadowcon: Set if has SHADOWCON register. + */ +struct s3c_fb_variant { + unsigned int is_2443:1; + unsigned short nr_windows; + unsigned short vidtcon; + unsigned short wincon; + unsigned short winmap; + unsigned short keycon; + unsigned short buf_start; + unsigned short buf_end; + unsigned short buf_size; + unsigned short osd; + unsigned short osd_stride; + unsigned short palette[S3C_FB_MAX_WIN]; + + unsigned int has_prtcon:1; + unsigned int has_shadowcon:1; +}; + +/** + * struct s3c_fb_win_variant + * @has_osd_c: Set if has OSD C register. + * @has_osd_d: Set if has OSD D register. + * @has_osd_alpha: Set if can change alpha transparency for a window. + * @palette_sz: Size of palette in entries. + * @palette_16bpp: Set if palette is 16bits wide. + * @osd_size_off: If != 0, supports setting up OSD for a window; the appropriate + * register is located at the given offset from OSD_BASE. + * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel. + * + * valid_bpp bit x is set if (x+1)BPP is supported. + */ +struct s3c_fb_win_variant { + unsigned int has_osd_c:1; + unsigned int has_osd_d:1; + unsigned int has_osd_alpha:1; + unsigned int palette_16bpp:1; + unsigned short osd_size_off; + unsigned short palette_sz; + u32 valid_bpp; +}; + +/** + * struct s3c_fb_driverdata - per-device type driver data for init time. + * @variant: The variant information for this driver. + * @win: The window information for each window. + */ +struct s3c_fb_driverdata { + struct s3c_fb_variant variant; + struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN]; +}; + +/** + * struct s3c_fb_palette - palette information + * @r: Red bitfield. + * @g: Green bitfield. + * @b: Blue bitfield. + * @a: Alpha bitfield. + */ +struct s3c_fb_palette { + struct fb_bitfield r; + struct fb_bitfield g; + struct fb_bitfield b; + struct fb_bitfield a; +}; + /** * struct s3c_fb_win - per window private data for each framebuffer. * @windata: The platform data supplied for the window configuration. * @parent: The hardware that this window is part of. * @fbinfo: Pointer pack to the framebuffer info for this window. + * @varint: The variant information for this window. * @palette_buffer: Buffer/cache to hold palette entries. * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/ * @index: The window number of this window. @@ -65,6 +162,7 @@ struct s3c_fb_win { struct s3c_fb *parent; struct fb_info *fbinfo; struct s3c_fb_palette palette; + struct s3c_fb_win_variant variant; u32 *palette_buffer; u32 pseudo_palette[16]; @@ -72,37 +170,54 @@ struct s3c_fb_win { }; /** + * struct s3c_fb_vsync - vsync information + * @wait: a queue for processes waiting for vsync + * @count: vsync interrupt count + */ +struct s3c_fb_vsync { + wait_queue_head_t wait; + unsigned int count; +}; + +/** * struct s3c_fb - overall hardware state of the hardware * @dev: The device that we bound to, for printing, etc. * @regs_res: The resource we claimed for the IO registers. * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk. * @regs: The mapped hardware registers. + * @variant: Variant information for this hardware. * @enabled: A bitmask of enabled hardware windows. * @pdata: The platform configuration data passed with the device. * @windows: The hardware windows that have been claimed. + * @irq_no: IRQ line number + * @irq_flags: irq flags + * @vsync_info: VSYNC-related information (count, queues...) */ struct s3c_fb { struct device *dev; struct resource *regs_res; struct clk *bus_clk; void __iomem *regs; + struct s3c_fb_variant variant; unsigned char enabled; struct s3c_fb_platdata *pdata; struct s3c_fb_win *windows[S3C_FB_MAX_WIN]; + + int irq_no; + unsigned long irq_flags; + struct s3c_fb_vsync vsync_info; }; /** - * s3c_fb_win_has_palette() - determine if a mode has a palette - * @win: The window number being queried. - * @bpp: The number of bits per pixel to test. - * - * Work out if the given window supports palletised data at the specified bpp. + * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode. + * @win: The device window. + * @bpp: The bit depth. */ -static int s3c_fb_win_has_palette(unsigned int win, unsigned int bpp) +static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp) { - return s3c_fb_win_pal_size(win) <= (1 << bpp); + return win->variant.valid_bpp & VALID_BPP(bpp); } /** @@ -125,7 +240,7 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var, var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres); var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres); - if (!s3c_fb_validate_win_bpp(win->index, var->bits_per_pixel)) { + if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) { dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n", win->index, var->bits_per_pixel); return -EINVAL; @@ -140,7 +255,7 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var, case 2: case 4: case 8: - if (!s3c_fb_win_has_palette(win->index, var->bits_per_pixel)) { + if (sfb->variant.palette[win->index] != 0) { /* non palletised, A:1,R:2,G:3,B:2 mode */ var->red.offset = 4; var->green.offset = 2; @@ -255,6 +370,66 @@ static int s3c_fb_align_word(unsigned int bpp, unsigned int pix) } /** + * vidosd_set_size() - set OSD size for a window + * + * @win: the window to set OSD size for + * @size: OSD size register value + */ +static void vidosd_set_size(struct s3c_fb_win *win, u32 size) +{ + struct s3c_fb *sfb = win->parent; + + /* OSD can be set up if osd_size_off != 0 for this window */ + if (win->variant.osd_size_off) + writel(size, sfb->regs + OSD_BASE(win->index, sfb->variant) + + win->variant.osd_size_off); +} + +/** + * vidosd_set_alpha() - set alpha transparency for a window + * + * @win: the window to set OSD size for + * @alpha: alpha register value + */ +static void vidosd_set_alpha(struct s3c_fb_win *win, u32 alpha) +{ + struct s3c_fb *sfb = win->parent; + + if (win->variant.has_osd_alpha) + writel(alpha, sfb->regs + VIDOSD_C(win->index, sfb->variant)); +} + +/** + * shadow_protect_win() - disable updating values from shadow registers at vsync + * + * @win: window to protect registers for + * @protect: 1 to protect (disable updates) + */ +static void shadow_protect_win(struct s3c_fb_win *win, bool protect) +{ + struct s3c_fb *sfb = win->parent; + u32 reg; + + if (protect) { + if (sfb->variant.has_prtcon) { + writel(PRTCON_PROTECT, sfb->regs + PRTCON); + } else if (sfb->variant.has_shadowcon) { + reg = readl(sfb->regs + SHADOWCON); + writel(reg | SHADOWCON_WINx_PROTECT(win->index), + sfb->regs + SHADOWCON); + } + } else { + if (sfb->variant.has_prtcon) { + writel(0, sfb->regs + PRTCON); + } else if (sfb->variant.has_shadowcon) { + reg = readl(sfb->regs + SHADOWCON); + writel(reg & ~SHADOWCON_WINx_PROTECT(win->index), + sfb->regs + SHADOWCON); + } + } +} + +/** * s3c_fb_set_par() - framebuffer request to set new framebuffer state. * @info: The framebuffer to change. * @@ -266,14 +441,17 @@ static int s3c_fb_set_par(struct fb_info *info) struct s3c_fb_win *win = info->par; struct s3c_fb *sfb = win->parent; void __iomem *regs = sfb->regs; + void __iomem *buf = regs; int win_no = win->index; - u32 osdc_data = 0; + u32 alpha = 0; u32 data; u32 pagewidth; int clkdiv; dev_dbg(sfb->dev, "setting framebuffer parameters\n"); + shadow_protect_win(win, 1); + switch (var->bits_per_pixel) { case 32: case 24: @@ -282,7 +460,7 @@ static int s3c_fb_set_par(struct fb_info *info) info->fix.visual = FB_VISUAL_TRUECOLOR; break; case 8: - if (s3c_fb_win_has_palette(win_no, 8)) + if (win->variant.palette_sz >= 256) info->fix.visual = FB_VISUAL_PSEUDOCOLOR; else info->fix.visual = FB_VISUAL_TRUECOLOR; @@ -297,12 +475,15 @@ static int s3c_fb_set_par(struct fb_info *info) info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; + info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0; + info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0; + /* disable the window whilst we update it */ writel(0, regs + WINCON(win_no)); - /* use window 0 as the basis for the lcd output timings */ + /* use platform specified window as the basis for the lcd timings */ - if (win_no == 0) { + if (win_no == sfb->pdata->default_win) { clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock); data = sfb->pdata->vidcon0; @@ -315,6 +496,9 @@ static int s3c_fb_set_par(struct fb_info *info) /* write the timing data to the panel */ + if (sfb->variant.is_2443) + data |= (1 << 5); + data |= VIDCON0_ENVID | VIDCON0_ENVID_F; writel(data, regs + VIDCON0); @@ -322,53 +506,54 @@ static int s3c_fb_set_par(struct fb_info *info) VIDTCON0_VFPD(var->lower_margin - 1) | VIDTCON0_VSPW(var->vsync_len - 1); - writel(data, regs + VIDTCON0); + writel(data, regs + sfb->variant.vidtcon); data = VIDTCON1_HBPD(var->left_margin - 1) | VIDTCON1_HFPD(var->right_margin - 1) | VIDTCON1_HSPW(var->hsync_len - 1); - writel(data, regs + VIDTCON1); + /* VIDTCON1 */ + writel(data, regs + sfb->variant.vidtcon + 4); data = VIDTCON2_LINEVAL(var->yres - 1) | VIDTCON2_HOZVAL(var->xres - 1); - writel(data, regs + VIDTCON2); + writel(data, regs +sfb->variant.vidtcon + 8 ); } /* write the buffer address */ - writel(info->fix.smem_start, regs + VIDW_BUF_START(win_no)); + /* start and end registers stride is 8 */ + buf = regs + win_no * 8; + + writel(info->fix.smem_start, buf + sfb->variant.buf_start); data = info->fix.smem_start + info->fix.line_length * var->yres; - writel(data, regs + VIDW_BUF_END(win_no)); + writel(data, buf + sfb->variant.buf_end); pagewidth = (var->xres * var->bits_per_pixel) >> 3; data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) | VIDW_BUF_SIZE_PAGEWIDTH(pagewidth); - writel(data, regs + VIDW_BUF_SIZE(win_no)); + writel(data, regs + sfb->variant.buf_size + (win_no * 4)); /* write 'OSD' registers to control position of framebuffer */ data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0); - writel(data, regs + VIDOSD_A(win_no)); + writel(data, regs + VIDOSD_A(win_no, sfb->variant)); data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel, var->xres - 1)) | VIDOSDxB_BOTRIGHT_Y(var->yres - 1); - writel(data, regs + VIDOSD_B(win_no)); + writel(data, regs + VIDOSD_B(win_no, sfb->variant)); data = var->xres * var->yres; - osdc_data = VIDISD14C_ALPHA1_R(0xf) | + alpha = VIDISD14C_ALPHA1_R(0xf) | VIDISD14C_ALPHA1_G(0xf) | VIDISD14C_ALPHA1_B(0xf); - if (s3c_fb_has_osd_d(win_no)) { - writel(data, regs + VIDOSD_D(win_no)); - writel(osdc_data, regs + VIDOSD_C(win_no)); - } else - writel(data, regs + VIDOSD_C(win_no)); + vidosd_set_alpha(win, alpha); + vidosd_set_size(win, data); data = WINCONx_ENWIN; @@ -424,13 +609,15 @@ static int s3c_fb_set_par(struct fb_info *info) else data |= WINCON0_BPPMODE_24BPP_888; + data |= WINCONx_WSWP; data |= WINCONx_BURSTLEN_16WORD; break; } - /* It has no color key control register for window0 */ + /* Enable the colour keying for the window below this one */ if (win_no > 0) { u32 keycon0_data = 0, keycon1_data = 0; + void __iomem *keycon = regs + sfb->variant.keycon; keycon0_data = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F | @@ -438,12 +625,23 @@ static int s3c_fb_set_par(struct fb_info *info) keycon1_data = WxKEYCON1_COLVAL(0xffffff); - writel(keycon0_data, regs + WxKEYCONy(win_no-1, 0)); - writel(keycon1_data, regs + WxKEYCONy(win_no-1, 1)); + keycon += (win_no - 1) * 8; + + writel(keycon0_data, keycon + WKEYCON0); + writel(keycon1_data, keycon + WKEYCON1); + } + + writel(data, regs + sfb->variant.wincon + (win_no * 4)); + writel(0x0, regs + sfb->variant.winmap + (win_no * 4)); + + /* Enable DMA channel for this window */ + if (sfb->variant.has_shadowcon) { + data = readl(sfb->regs + SHADOWCON); + data |= SHADOWCON_CHx_ENABLE(win_no); + writel(data, sfb->regs + SHADOWCON); } - writel(data, regs + WINCON(win_no)); - writel(0x0, regs + WINxMAP(win_no)); + shadow_protect_win(win, 0); return 0; } @@ -470,7 +668,7 @@ static void s3c_fb_update_palette(struct s3c_fb *sfb, void __iomem *palreg; u32 palcon; - palreg = sfb->regs + s3c_fb_pal_reg(win->index, reg); + palreg = sfb->regs + sfb->variant.palette[win->index]; dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n", __func__, win->index, reg, palreg, value); @@ -480,10 +678,10 @@ static void s3c_fb_update_palette(struct s3c_fb *sfb, palcon = readl(sfb->regs + WPALCON); writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON); - if (s3c_fb_pal_is16(win->index)) - writew(value, palreg); + if (win->variant.palette_16bpp) + writew(value, palreg + (reg * 2)); else - writel(value, palreg); + writel(value, palreg + (reg * 4)); writel(palcon, sfb->regs + WPALCON); } @@ -532,7 +730,7 @@ static int s3c_fb_setcolreg(unsigned regno, break; case FB_VISUAL_PSEUDOCOLOR: - if (regno < s3c_fb_win_pal_size(win->index)) { + if (regno < win->variant.palette_sz) { val = chan_to_field(red, &win->palette.r); val |= chan_to_field(green, &win->palette.g); val |= chan_to_field(blue, &win->palette.b); @@ -591,7 +789,7 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) dev_dbg(sfb->dev, "blank mode %d\n", blank_mode); - wincon = readl(sfb->regs + WINCON(index)); + wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4)); switch (blank_mode) { case FB_BLANK_POWERDOWN: @@ -602,11 +800,11 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) case FB_BLANK_NORMAL: /* disable the DMA and display 0x0 (black) */ writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0), - sfb->regs + WINxMAP(index)); + sfb->regs + sfb->variant.winmap + (index * 4)); break; case FB_BLANK_UNBLANK: - writel(0x0, sfb->regs + WINxMAP(index)); + writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4)); wincon |= WINCONx_ENWIN; sfb->enabled |= (1 << index); break; @@ -617,7 +815,7 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) return 1; } - writel(wincon, sfb->regs + WINCON(index)); + writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4)); /* Check the enabled state to see if we need to be running the * main LCD interface, as if there are no active windows then @@ -636,12 +834,185 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) /* we're stuck with this until we can do something about overriding * the power control using the blanking event for a single fb. */ - if (index == 0) + if (index == sfb->pdata->default_win) s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0); return 0; } +/** + * s3c_fb_pan_display() - Pan the display. + * + * Note that the offsets can be written to the device at any time, as their + * values are latched at each vsync automatically. This also means that only + * the last call to this function will have any effect on next vsync, but + * there is no need to sleep waiting for it to prevent tearing. + * + * @var: The screen information to verify. + * @info: The framebuffer device. + */ +static int s3c_fb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct s3c_fb_win *win = info->par; + struct s3c_fb *sfb = win->parent; + void __iomem *buf = sfb->regs + win->index * 8; + unsigned int start_boff, end_boff; + + /* Offset in bytes to the start of the displayed area */ + start_boff = var->yoffset * info->fix.line_length; + /* X offset depends on the current bpp */ + if (info->var.bits_per_pixel >= 8) { + start_boff += var->xoffset * (info->var.bits_per_pixel >> 3); + } else { + switch (info->var.bits_per_pixel) { + case 4: + start_boff += var->xoffset >> 1; + break; + case 2: + start_boff += var->xoffset >> 2; + break; + case 1: + start_boff += var->xoffset >> 3; + break; + default: + dev_err(sfb->dev, "invalid bpp\n"); + return -EINVAL; + } + } + /* Offset in bytes to the end of the displayed area */ + end_boff = start_boff + var->yres * info->fix.line_length; + + /* Temporarily turn off per-vsync update from shadow registers until + * both start and end addresses are updated to prevent corruption */ + shadow_protect_win(win, 1); + + writel(info->fix.smem_start + start_boff, buf + sfb->variant.buf_start); + writel(info->fix.smem_start + end_boff, buf + sfb->variant.buf_end); + + shadow_protect_win(win, 0); + + return 0; +} + +/** + * s3c_fb_enable_irq() - enable framebuffer interrupts + * @sfb: main hardware state + */ +static void s3c_fb_enable_irq(struct s3c_fb *sfb) +{ + void __iomem *regs = sfb->regs; + u32 irq_ctrl_reg; + + if (!test_and_set_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) { + /* IRQ disabled, enable it */ + irq_ctrl_reg = readl(regs + VIDINTCON0); + + irq_ctrl_reg |= VIDINTCON0_INT_ENABLE; + irq_ctrl_reg |= VIDINTCON0_INT_FRAME; + + irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL0_MASK; + irq_ctrl_reg |= VIDINTCON0_FRAMESEL0_VSYNC; + irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL1_MASK; + irq_ctrl_reg |= VIDINTCON0_FRAMESEL1_NONE; + + writel(irq_ctrl_reg, regs + VIDINTCON0); + } +} + +/** + * s3c_fb_disable_irq() - disable framebuffer interrupts + * @sfb: main hardware state + */ +static void s3c_fb_disable_irq(struct s3c_fb *sfb) +{ + void __iomem *regs = sfb->regs; + u32 irq_ctrl_reg; + + if (test_and_clear_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) { + /* IRQ enabled, disable it */ + irq_ctrl_reg = readl(regs + VIDINTCON0); + + irq_ctrl_reg &= ~VIDINTCON0_INT_FRAME; + irq_ctrl_reg &= ~VIDINTCON0_INT_ENABLE; + + writel(irq_ctrl_reg, regs + VIDINTCON0); + } +} + +static irqreturn_t s3c_fb_irq(int irq, void *dev_id) +{ + struct s3c_fb *sfb = dev_id; + void __iomem *regs = sfb->regs; + u32 irq_sts_reg; + + irq_sts_reg = readl(regs + VIDINTCON1); + + if (irq_sts_reg & VIDINTCON1_INT_FRAME) { + + /* VSYNC interrupt, accept it */ + writel(VIDINTCON1_INT_FRAME, regs + VIDINTCON1); + + sfb->vsync_info.count++; + wake_up_interruptible(&sfb->vsync_info.wait); + } + + /* We only support waiting for VSYNC for now, so it's safe + * to always disable irqs here. + */ + s3c_fb_disable_irq(sfb); + + return IRQ_HANDLED; +} + +/** + * s3c_fb_wait_for_vsync() - sleep until next VSYNC interrupt or timeout + * @sfb: main hardware state + * @crtc: head index. + */ +static int s3c_fb_wait_for_vsync(struct s3c_fb *sfb, u32 crtc) +{ + unsigned long count; + int ret; + + if (crtc != 0) + return -ENODEV; + + count = sfb->vsync_info.count; + s3c_fb_enable_irq(sfb); + ret = wait_event_interruptible_timeout(sfb->vsync_info.wait, + count != sfb->vsync_info.count, + msecs_to_jiffies(VSYNC_TIMEOUT_MSEC)); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static int s3c_fb_ioctl(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + struct s3c_fb_win *win = info->par; + struct s3c_fb *sfb = win->parent; + int ret; + u32 crtc; + + switch (cmd) { + case FBIO_WAITFORVSYNC: + if (get_user(crtc, (u32 __user *)arg)) { + ret = -EFAULT; + break; + } + + ret = s3c_fb_wait_for_vsync(sfb, crtc); + break; + default: + ret = -ENOTTY; + } + + return ret; +} + static struct fb_ops s3c_fb_ops = { .owner = THIS_MODULE, .fb_check_var = s3c_fb_check_var, @@ -651,9 +1022,33 @@ static struct fb_ops s3c_fb_ops = { .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, + .fb_pan_display = s3c_fb_pan_display, + .fb_ioctl = s3c_fb_ioctl, }; /** + * s3c_fb_missing_pixclock() - calculates pixel clock + * @mode: The video mode to change. + * + * Calculate the pixel clock when none has been given through platform data. + */ +static void __devinit s3c_fb_missing_pixclock(struct fb_videomode *mode) +{ + u64 pixclk = 1000000000000ULL; + u32 div; + + div = mode->left_margin + mode->hsync_len + mode->right_margin + + mode->xres; + div *= mode->upper_margin + mode->vsync_len + mode->lower_margin + + mode->yres; + div *= mode->refresh ? : 60; + + do_div(pixclk, div); + + mode->pixclock = pixclk; +} + +/** * s3c_fb_alloc_memory() - allocate display memory for framebuffer window * @sfb: The base resources for the hardware. * @win: The window to initialise memory for. @@ -711,7 +1106,8 @@ static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win) { struct fb_info *fbi = win->fbinfo; - dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len), + if (fbi->screen_base) + dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len), fbi->screen_base, fbi->fix.smem_start); } @@ -724,9 +1120,18 @@ static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win) */ static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win) { + u32 data; + if (win->fbinfo) { + if (sfb->variant.has_shadowcon) { + data = readl(sfb->regs + SHADOWCON); + data &= ~SHADOWCON_CHx_ENABLE(win->index); + data &= ~SHADOWCON_CHx_LOCAL_ENABLE(win->index); + writel(data, sfb->regs + SHADOWCON); + } unregister_framebuffer(win->fbinfo); - fb_dealloc_cmap(&win->fbinfo->cmap); + if (win->fbinfo->cmap.len) + fb_dealloc_cmap(&win->fbinfo->cmap); s3c_fb_free_memory(sfb, win); framebuffer_release(win->fbinfo); } @@ -735,12 +1140,14 @@ static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win) /** * s3c_fb_probe_win() - register an hardware window * @sfb: The base resources for the hardware + * @variant: The variant information for this window. * @res: Pointer to where to place the resultant window. * * Allocate and do the basic initialisation for one of the hardware's graphics * windows. */ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, + struct s3c_fb_win_variant *variant, struct s3c_fb_win **res) { struct fb_var_screeninfo *var; @@ -751,9 +1158,11 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, int palette_size; int ret; - dev_dbg(sfb->dev, "probing window %d\n", win_no); + dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant); + + init_waitqueue_head(&sfb->vsync_info.wait); - palette_size = s3c_fb_win_pal_size(win_no); + palette_size = variant->palette_sz * 4; fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) + palette_size * sizeof(u32), sfb->dev); @@ -770,7 +1179,9 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, WARN_ON(windata->win_mode.yres == 0); win = fbinfo->par; + *res = win; var = &fbinfo->var; + win->variant = *variant; win->fbinfo = fbinfo; win->parent = sfb; win->windata = windata; @@ -784,7 +1195,24 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, } /* setup the r/b/g positions for the window's palette */ - s3c_fb_init_palette(win_no, &win->palette); + if (win->variant.palette_16bpp) { + /* Set RGB 5:6:5 as default */ + win->palette.r.offset = 11; + win->palette.r.length = 5; + win->palette.g.offset = 5; + win->palette.g.length = 6; + win->palette.b.offset = 0; + win->palette.b.length = 5; + + } else { + /* Set 8bpp or 8bpp and 1bit alpha */ + win->palette.r.offset = 16; + win->palette.r.length = 8; + win->palette.g.offset = 8; + win->palette.g.length = 8; + win->palette.b.offset = 0; + win->palette.b.length = 8; + } /* setup the initial video mode from the window */ fb_videomode_to_var(&fbinfo->var, initmode); @@ -808,7 +1236,7 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, /* create initial colour map */ - ret = fb_alloc_cmap(&fbinfo->cmap, s3c_fb_win_pal_size(win_no), 1); + ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1); if (ret == 0) fb_set_cmap(&fbinfo->cmap, fbinfo); else @@ -826,7 +1254,6 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, return ret; } - *res = win; dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id); return 0; @@ -842,18 +1269,19 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, static void s3c_fb_clear_win(struct s3c_fb *sfb, int win) { void __iomem *regs = sfb->regs; - - writel(0, regs + WINCON(win)); - writel(0xffffff, regs + WxKEYCONy(win, 0)); - writel(0xffffff, regs + WxKEYCONy(win, 1)); - - writel(0, regs + VIDOSD_A(win)); - writel(0, regs + VIDOSD_B(win)); - writel(0, regs + VIDOSD_C(win)); + u32 reg; + + writel(0, regs + sfb->variant.wincon + (win * 4)); + writel(0, regs + VIDOSD_A(win, sfb->variant)); + writel(0, regs + VIDOSD_B(win, sfb->variant)); + writel(0, regs + VIDOSD_C(win, sfb->variant)); + reg = readl(regs + SHADOWCON); + writel(reg & ~SHADOWCON_WINx_PROTECT(win), regs + SHADOWCON); } static int __devinit s3c_fb_probe(struct platform_device *pdev) { + struct s3c_fb_driverdata *fbdrv; struct device *dev = &pdev->dev; struct s3c_fb_platdata *pd; struct s3c_fb *sfb; @@ -861,6 +1289,13 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) int win; int ret = 0; + fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data; + + if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) { + dev_err(dev, "too many windows, cannot attach\n"); + return -EINVAL; + } + pd = pdev->dev.platform_data; if (!pd) { dev_err(dev, "no platform data specified\n"); @@ -873,8 +1308,11 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) return -ENOMEM; } + dev_dbg(dev, "allocate new framebuffer %p\n", sfb); + sfb->dev = dev; sfb->pdata = pd; + sfb->variant = fbdrv->variant; sfb->bus_clk = clk_get(dev, "lcd"); if (IS_ERR(sfb->bus_clk)) { @@ -906,6 +1344,20 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) goto err_req_region; } + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, "failed to acquire irq resource\n"); + ret = -ENOENT; + goto err_ioremap; + } + sfb->irq_no = res->start; + ret = request_irq(sfb->irq_no, s3c_fb_irq, + 0, "s3c_fb", sfb); + if (ret) { + dev_err(dev, "irq request failed\n"); + goto err_ioremap; + } + dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs); /* setup gpio and output polarity controls */ @@ -916,21 +1368,34 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) /* zero all windows before we do anything */ - for (win = 0; win < S3C_FB_MAX_WIN; win++) + for (win = 0; win < fbdrv->variant.nr_windows; win++) s3c_fb_clear_win(sfb, win); + /* initialise colour key controls */ + for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) { + void __iomem *regs = sfb->regs + sfb->variant.keycon; + + regs += (win * 8); + writel(0xffffff, regs + WKEYCON0); + writel(0xffffff, regs + WKEYCON1); + } + /* we have the register setup, start allocating framebuffers */ - for (win = 0; win < S3C_FB_MAX_WIN; win++) { + for (win = 0; win < fbdrv->variant.nr_windows; win++) { if (!pd->win[win]) continue; - ret = s3c_fb_probe_win(sfb, win, &sfb->windows[win]); + if (!pd->win[win]->win_mode.pixclock) + s3c_fb_missing_pixclock(&pd->win[win]->win_mode); + + ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win], + &sfb->windows[win]); if (ret < 0) { dev_err(dev, "failed to create window %d\n", win); for (; win >= 0; win--) s3c_fb_release_win(sfb, sfb->windows[win]); - goto err_ioremap; + goto err_irq; } } @@ -938,6 +1403,9 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) return 0; +err_irq: + free_irq(sfb->irq_no, sfb); + err_ioremap: iounmap(sfb->regs); @@ -970,6 +1438,8 @@ static int __devexit s3c_fb_remove(struct platform_device *pdev) if (sfb->windows[win]) s3c_fb_release_win(sfb, sfb->windows[win]); + free_irq(sfb->irq_no, sfb); + iounmap(sfb->regs); clk_disable(sfb->bus_clk); @@ -1016,9 +1486,17 @@ static int s3c_fb_resume(struct platform_device *pdev) writel(pd->vidcon1, sfb->regs + VIDCON1); /* zero all windows before we do anything */ - for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) + for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++) s3c_fb_clear_win(sfb, win_no); + for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) { + void __iomem *regs = sfb->regs + sfb->variant.keycon; + + regs += (win_no * 8); + writel(0xffffff, regs + WKEYCON0); + writel(0xffffff, regs + WKEYCON1); + } + /* restore framebuffers */ for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) { win = sfb->windows[win_no]; @@ -1036,11 +1514,208 @@ static int s3c_fb_resume(struct platform_device *pdev) #define s3c_fb_resume NULL #endif + +#define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4)) +#define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8)) + +static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] = { + [0] = { + .has_osd_c = 1, + .osd_size_off = 0x8, + .palette_sz = 256, + .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), + }, + [1] = { + .has_osd_c = 1, + .has_osd_d = 1, + .osd_size_off = 0x12, + .has_osd_alpha = 1, + .palette_sz = 256, + .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | + VALID_BPP(18) | VALID_BPP(19) | + VALID_BPP(24) | VALID_BPP(25)), + }, + [2] = { + .has_osd_c = 1, + .has_osd_d = 1, + .osd_size_off = 0x12, + .has_osd_alpha = 1, + .palette_sz = 16, + .palette_16bpp = 1, + .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | + VALID_BPP(18) | VALID_BPP(19) | + VALID_BPP(24) | VALID_BPP(25)), + }, + [3] = { + .has_osd_c = 1, + .has_osd_alpha = 1, + .palette_sz = 16, + .palette_16bpp = 1, + .valid_bpp = (VALID_BPP124 | VALID_BPP(16) | + VALID_BPP(18) | VALID_BPP(19) | + VALID_BPP(24) | VALID_BPP(25)), + }, + [4] = { + .has_osd_c = 1, + .has_osd_alpha = 1, + .palette_sz = 4, + .palette_16bpp = 1, + .valid_bpp = (VALID_BPP(1) | VALID_BPP(2) | + VALID_BPP(16) | VALID_BPP(18) | + VALID_BPP(24) | VALID_BPP(25)), + }, +}; + +static struct s3c_fb_driverdata s3c_fb_data_64xx = { + .variant = { + .nr_windows = 5, + .vidtcon = VIDTCON0, + .wincon = WINCON(0), + .winmap = WINxMAP(0), + .keycon = WKEYCON, + .osd = VIDOSD_BASE, + .osd_stride = 16, + .buf_start = VIDW_BUF_START(0), + .buf_size = VIDW_BUF_SIZE(0), + .buf_end = VIDW_BUF_END(0), + + .palette = { + [0] = 0x400, + [1] = 0x800, + [2] = 0x300, + [3] = 0x320, + [4] = 0x340, + }, + + .has_prtcon = 1, + }, + .win[0] = &s3c_fb_data_64xx_wins[0], + .win[1] = &s3c_fb_data_64xx_wins[1], + .win[2] = &s3c_fb_data_64xx_wins[2], + .win[3] = &s3c_fb_data_64xx_wins[3], + .win[4] = &s3c_fb_data_64xx_wins[4], +}; + +static struct s3c_fb_driverdata s3c_fb_data_s5pc100 = { + .variant = { + .nr_windows = 5, + .vidtcon = VIDTCON0, + .wincon = WINCON(0), + .winmap = WINxMAP(0), + .keycon = WKEYCON, + .osd = VIDOSD_BASE, + .osd_stride = 16, + .buf_start = VIDW_BUF_START(0), + .buf_size = VIDW_BUF_SIZE(0), + .buf_end = VIDW_BUF_END(0), + + .palette = { + [0] = 0x2400, + [1] = 0x2800, + [2] = 0x2c00, + [3] = 0x3000, + [4] = 0x3400, + }, + + .has_prtcon = 1, + }, + .win[0] = &s3c_fb_data_64xx_wins[0], + .win[1] = &s3c_fb_data_64xx_wins[1], + .win[2] = &s3c_fb_data_64xx_wins[2], + .win[3] = &s3c_fb_data_64xx_wins[3], + .win[4] = &s3c_fb_data_64xx_wins[4], +}; + +static struct s3c_fb_driverdata s3c_fb_data_s5pv210 = { + .variant = { + .nr_windows = 5, + .vidtcon = VIDTCON0, + .wincon = WINCON(0), + .winmap = WINxMAP(0), + .keycon = WKEYCON, + .osd = VIDOSD_BASE, + .osd_stride = 16, + .buf_start = VIDW_BUF_START(0), + .buf_size = VIDW_BUF_SIZE(0), + .buf_end = VIDW_BUF_END(0), + + .palette = { + [0] = 0x2400, + [1] = 0x2800, + [2] = 0x2c00, + [3] = 0x3000, + [4] = 0x3400, + }, + + .has_shadowcon = 1, + }, + .win[0] = &s3c_fb_data_64xx_wins[0], + .win[1] = &s3c_fb_data_64xx_wins[1], + .win[2] = &s3c_fb_data_64xx_wins[2], + .win[3] = &s3c_fb_data_64xx_wins[3], + .win[4] = &s3c_fb_data_64xx_wins[4], +}; + +/* S3C2443/S3C2416 style hardware */ +static struct s3c_fb_driverdata s3c_fb_data_s3c2443 = { + .variant = { + .nr_windows = 2, + .is_2443 = 1, + + .vidtcon = 0x08, + .wincon = 0x14, + .winmap = 0xd0, + .keycon = 0xb0, + .osd = 0x28, + .osd_stride = 12, + .buf_start = 0x64, + .buf_size = 0x94, + .buf_end = 0x7c, + + .palette = { + [0] = 0x400, + [1] = 0x800, + }, + }, + .win[0] = &(struct s3c_fb_win_variant) { + .palette_sz = 256, + .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), + }, + .win[1] = &(struct s3c_fb_win_variant) { + .has_osd_c = 1, + .has_osd_alpha = 1, + .palette_sz = 256, + .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | + VALID_BPP(18) | VALID_BPP(19) | + VALID_BPP(24) | VALID_BPP(25) | + VALID_BPP(28)), + }, +}; + +static struct platform_device_id s3c_fb_driver_ids[] = { + { + .name = "s3c-fb", + .driver_data = (unsigned long)&s3c_fb_data_64xx, + }, { + .name = "s5pc100-fb", + .driver_data = (unsigned long)&s3c_fb_data_s5pc100, + }, { + .name = "s5pv210-fb", + .driver_data = (unsigned long)&s3c_fb_data_s5pv210, + }, { + .name = "s3c2443-fb", + .driver_data = (unsigned long)&s3c_fb_data_s3c2443, + }, + {}, +}; +MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids); + static struct platform_driver s3c_fb_driver = { .probe = s3c_fb_probe, .remove = __devexit_p(s3c_fb_remove), .suspend = s3c_fb_suspend, .resume = s3c_fb_resume, + .id_table = s3c_fb_driver_ids, .driver = { .name = "s3c-fb", .owner = THIS_MODULE, |