linux/drivers/video/fbdev/sh7760fb.c
Linus Torvalds 9f68e3655a drm pull for 5.6-rc1
uapi:
 - dma-buf heaps added (and fixed)
 - command line add support for panel oreientation
 - command line allow overriding penguin count
 
 drm:
 - mipi dsi definition updates
 - lockdep annotations for dma_resv
 - remove dma-buf kmap/kunmap support
 - constify fb_ops in all fbdev drivers
 - MST fix for daisy chained hotplug-
 - CTA-861-G modes with VIC >= 193 added
 - fix drm_panel_of_backlight export
 - LVDS decoder support
 - more device based logging support
 - scanline alighment for dumb buffers
 - MST DSC helpers
 
 scheduler:
 - documentation fixes
 - job distribution improvements
 
 panel:
 - Logic PD type 28 panel support
 - Jimax8729d MIPI-DSI
 - igenic JZ4770
 - generic DSI devicetree bindings
 - sony acx424AKP panel
 - Leadtek LTK500HD1829
 - xinpeng XPP055C272
 - AUO B116XAK01
 - GiantPlus GPM940B0
 - BOE NV140FHM-N49
 - Satoz SAT050AT40H12R2
 - Sharp LS020B1DD01D panels.
 
 ttm:
 - use blocking WW lock
 
 i915:
 - hw/uapi state separation
 - Lock annotation improvements
 - selftest improvements
 - ICL/TGL DSI VDSC support
 - VBT parsing improvments
 - Display refactoring
 - DSI updates + fixes
 - HDCP 2.2 for CFL
 - CML PCI ID fixes
 - GLK+ fbc fix
 - PSR fixes
 - GEN/GT refactor improvments
 - DP MST fixes
 - switch context id alloc to xarray
 - workaround updates
 - LMEM debugfs support
 - tiled monitor fixes
 - ICL+ clock gating programming removed
 - DP MST disable sequence fixed
 - LMEM discontiguous object maps
 - prefaulting for discontiguous objects
 - use LMEM for dumb buffers if possible
 - add LMEM mmap support
 
 amdgpu:
 - enable sync object timelines for vulkan
 - MST atomic routines
 - enable MST DSC support
 - add DMCUB display microengine support
 - DC OEM i2c support
 - Renoir DC fixes
 - Initial HDCP 2.x support
 - BACO support for Arcturus
 - Use BACO for runtime PM power save
 - gfxoff on navi10
 - gfx10 golden updates and fixes
 - DCN support on POWER
 - GFXOFF for raven1 refresh
 - MM engine idle handlers cleanup
 - 10bpc EDP panel fixes
 - renoir watermark fixes
 - SR-IOV fixes
 - Arcturus VCN fixes
 - GDDR6 training fixes
 - freesync fixes
 - Pollock support
 
 amdkfd:
 - unify more codepath with amdgpu
 - use KIQ to setup HIQ rather than MMIO
 
 radeon:
 - fix vma fault handler race
 - PPC DMA fix
 - register check fixes for r100/r200
 
 nouveau:
 - mmap_sem vs dma_resv fix
 - rewrite the ACR secure boot code for Turing
 - TU10x graphics engine support (TU11x pending)
 - Page kind mapping for turing
 - 10-bit LUT support
 - GP10B Tegra fixes
 - HD audio regression fix
 
 hisilicon/hibmc:
 - use generic fbdev code and helpers
 
 rockchip:
 - dsi/px30 support
 
 virtio:
 - fb damage support
 - static some functions
 
 vc4:
 - use dma_resv lock wrappers
 
 msm:
 - use dma_resv lock wrappers
 - sc7180 display + DSI support
 - a618 support
 - UBWC support improvements
 
 vmwgfx:
 - updates + new logging uapi
 
 exynos:
 - enable/disable callback cleanups
 
 etnaviv:
 - use dma_resv lock wrappers
 
 atmel-hlcdc:
 - clock fixes
 
 mediatek:
 - cmdq support
 - non-smooth cursor fixes
 - ctm property support
 
 sun4i:
 - suspend support
 - A64 mipi dsi support
 
 rcar-du:
 - Color management module support
 - LVDS encoder dual-link support
 - R8A77980 support
 
 analogic:
 - add support for an6345
 
 ast:
 - atomic modeset support
 - primary plane garbage fix
 
 arcgpu:
 - fixes for fourcc handling
 
 tegra:
 - minor fixes and improvments
 
 mcde:
 - vblank support
 
 meson:
 - OSD1 plane AFBC commit
 
 gma500:
 - add pageflip support
 - reomve global drm_dev
 
 komeda:
 - tweak debugfs output
 - d32 support
 - runtime PM suppotr
 
 udl:
 - use generic shmem helpers
 - cleanup and fixes
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Merge tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Davbe Airlie:
 "This is the main pull request for graphics for 5.6. Usual selection of
  changes all over.

  I've got one outstanding vmwgfx pull that touches mm so kept it
  separate until after all of this lands. I'll try and get it to you
  soon after this, but it might be early next week (nothing wrong with
  code, just my schedule is messy)

  This also hits a lot of fbdev drivers with some cleanups.

  Other notables:
   - vulkan timeline semaphore support added to syncobjs
   - nouveau turing secureboot/graphics support
   - Displayport MST display stream compression support

  Detailed summary:

  uapi:
   - dma-buf heaps added (and fixed)
   - command line add support for panel oreientation
   - command line allow overriding penguin count

  drm:
   - mipi dsi definition updates
   - lockdep annotations for dma_resv
   - remove dma-buf kmap/kunmap support
   - constify fb_ops in all fbdev drivers
   - MST fix for daisy chained hotplug-
   - CTA-861-G modes with VIC >= 193 added
   - fix drm_panel_of_backlight export
   - LVDS decoder support
   - more device based logging support
   - scanline alighment for dumb buffers
   - MST DSC helpers

  scheduler:
   - documentation fixes
   - job distribution improvements

  panel:
   - Logic PD type 28 panel support
   - Jimax8729d MIPI-DSI
   - igenic JZ4770
   - generic DSI devicetree bindings
   - sony acx424AKP panel
   - Leadtek LTK500HD1829
   - xinpeng XPP055C272
   - AUO B116XAK01
   - GiantPlus GPM940B0
   - BOE NV140FHM-N49
   - Satoz SAT050AT40H12R2
   - Sharp LS020B1DD01D panels.

  ttm:
   - use blocking WW lock

  i915:
   - hw/uapi state separation
   - Lock annotation improvements
   - selftest improvements
   - ICL/TGL DSI VDSC support
   - VBT parsing improvments
   - Display refactoring
   - DSI updates + fixes
   - HDCP 2.2 for CFL
   - CML PCI ID fixes
   - GLK+ fbc fix
   - PSR fixes
   - GEN/GT refactor improvments
   - DP MST fixes
   - switch context id alloc to xarray
   - workaround updates
   - LMEM debugfs support
   - tiled monitor fixes
   - ICL+ clock gating programming removed
   - DP MST disable sequence fixed
   - LMEM discontiguous object maps
   - prefaulting for discontiguous objects
   - use LMEM for dumb buffers if possible
   - add LMEM mmap support

  amdgpu:
   - enable sync object timelines for vulkan
   - MST atomic routines
   - enable MST DSC support
   - add DMCUB display microengine support
   - DC OEM i2c support
   - Renoir DC fixes
   - Initial HDCP 2.x support
   - BACO support for Arcturus
   - Use BACO for runtime PM power save
   - gfxoff on navi10
   - gfx10 golden updates and fixes
   - DCN support on POWER
   - GFXOFF for raven1 refresh
   - MM engine idle handlers cleanup
   - 10bpc EDP panel fixes
   - renoir watermark fixes
   - SR-IOV fixes
   - Arcturus VCN fixes
   - GDDR6 training fixes
   - freesync fixes
   - Pollock support

  amdkfd:
   - unify more codepath with amdgpu
   - use KIQ to setup HIQ rather than MMIO

  radeon:
   - fix vma fault handler race
   - PPC DMA fix
   - register check fixes for r100/r200

  nouveau:
   - mmap_sem vs dma_resv fix
   - rewrite the ACR secure boot code for Turing
   - TU10x graphics engine support (TU11x pending)
   - Page kind mapping for turing
   - 10-bit LUT support
   - GP10B Tegra fixes
   - HD audio regression fix

  hisilicon/hibmc:
   - use generic fbdev code and helpers

  rockchip:
   - dsi/px30 support

  virtio:
   - fb damage support
   - static some functions

  vc4:
   - use dma_resv lock wrappers

  msm:
   - use dma_resv lock wrappers
   - sc7180 display + DSI support
   - a618 support
   - UBWC support improvements

  vmwgfx:
   - updates + new logging uapi

  exynos:
   - enable/disable callback cleanups

  etnaviv:
   - use dma_resv lock wrappers

  atmel-hlcdc:
   - clock fixes

  mediatek:
   - cmdq support
   - non-smooth cursor fixes
   - ctm property support

  sun4i:
   - suspend support
   - A64 mipi dsi support

  rcar-du:
   - Color management module support
   - LVDS encoder dual-link support
   - R8A77980 support

  analogic:
   - add support for an6345

  ast:
   - atomic modeset support
   - primary plane garbage fix

  arcgpu:
   - fixes for fourcc handling

  tegra:
   - minor fixes and improvments

  mcde:
   - vblank support

  meson:
   - OSD1 plane AFBC commit

  gma500:
   - add pageflip support
   - reomve global drm_dev

  komeda:
   - tweak debugfs output
   - d32 support
   - runtime PM suppotr

  udl:
   - use generic shmem helpers
   - cleanup and fixes"

* tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm: (1998 commits)
  drm/nouveau/fb/gp102-: allow module to load even when scrubber binary is missing
  drm/nouveau/acr: return error when registering LSF if ACR not supported
  drm/nouveau/disp/gv100-: not all channel types support reporting error codes
  drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
  drm/nouveau: support synchronous pushbuf submission
  drm/nouveau: signal pending fences when channel has been killed
  drm/nouveau: reject attempts to submit to dead channels
  drm/nouveau: zero vma pointer even if we only unreference it rather than free
  drm/nouveau: Add HD-audio component notifier support
  drm/nouveau: fix build error without CONFIG_IOMMU_API
  drm/nouveau/kms/nv04: remove set but not used variable 'width'
  drm/nouveau/kms/nv50: remove set but not unused variable 'nv_connector'
  drm/nouveau/mmu: fix comptag memory leak
  drm/nouveau/gr/gp10b: Use gp100_grctx and gp100_gr_zbc
  drm/nouveau/pmu/gm20b,gp10b: Fix Falcon bootstrapping
  drm/exynos: Rename Exynos to lowercase
  drm/exynos: change callback names
  drm/mst: Don't do atomic checks over disabled managers
  drm/amdgpu: add the lost mutex_init back
  drm/amd/display: skip opp blank or unblank if test pattern enabled
  ...
2020-01-30 08:04:01 -08:00

588 lines
14 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* SH7760/SH7763 LCDC Framebuffer driver.
*
* (c) 2006-2008 MSC Vertriebsges.m.b.H.,
* Manuel Lauss <mano@roarinelk.homelinux.net>
* (c) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
*
* PLEASE HAVE A LOOK AT Documentation/fb/sh7760fb.rst!
*
* Thanks to Siegfried Schaefer <s.schaefer at schaefer-edv.de>
* for his original source and testing!
*
* sh7760_setcolreg get from drivers/video/sh_mobile_lcdcfb.c
*/
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/fb.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <asm/sh7760fb.h>
struct sh7760fb_par {
void __iomem *base;
int irq;
struct sh7760fb_platdata *pd; /* display information */
dma_addr_t fbdma; /* physical address */
int rot; /* rotation enabled? */
u32 pseudo_palette[16];
struct platform_device *dev;
struct resource *ioarea;
struct completion vsync; /* vsync irq event */
};
static irqreturn_t sh7760fb_irq(int irq, void *data)
{
struct completion *c = data;
complete(c);
return IRQ_HANDLED;
}
/* wait_for_lps - wait until power supply has reached a certain state. */
static int wait_for_lps(struct sh7760fb_par *par, int val)
{
int i = 100;
while (--i && ((ioread16(par->base + LDPMMR) & 3) != val))
msleep(1);
if (i <= 0)
return -ETIMEDOUT;
return 0;
}
/* en/disable the LCDC */
static int sh7760fb_blank(int blank, struct fb_info *info)
{
struct sh7760fb_par *par = info->par;
struct sh7760fb_platdata *pd = par->pd;
unsigned short cntr = ioread16(par->base + LDCNTR);
unsigned short intr = ioread16(par->base + LDINTR);
int lps;
if (blank == FB_BLANK_UNBLANK) {
intr |= VINT_START;
cntr = LDCNTR_DON2 | LDCNTR_DON;
lps = 3;
} else {
intr &= ~VINT_START;
cntr = LDCNTR_DON2;
lps = 0;
}
if (pd->blank)
pd->blank(blank);
iowrite16(intr, par->base + LDINTR);
iowrite16(cntr, par->base + LDCNTR);
return wait_for_lps(par, lps);
}
static int sh7760_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 >= 16)
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 int sh7760fb_get_color_info(struct device *dev,
u16 lddfr, int *bpp, int *gray)
{
int lbpp, lgray;
lgray = lbpp = 0;
switch (lddfr & LDDFR_COLOR_MASK) {
case LDDFR_1BPP_MONO:
lgray = 1;
lbpp = 1;
break;
case LDDFR_2BPP_MONO:
lgray = 1;
lbpp = 2;
break;
case LDDFR_4BPP_MONO:
lgray = 1;
case LDDFR_4BPP:
lbpp = 4;
break;
case LDDFR_6BPP_MONO:
lgray = 1;
case LDDFR_8BPP:
lbpp = 8;
break;
case LDDFR_16BPP_RGB555:
case LDDFR_16BPP_RGB565:
lbpp = 16;
lgray = 0;
break;
default:
dev_dbg(dev, "unsupported LDDFR bit depth.\n");
return -EINVAL;
}
if (bpp)
*bpp = lbpp;
if (gray)
*gray = lgray;
return 0;
}
static int sh7760fb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct fb_fix_screeninfo *fix = &info->fix;
struct sh7760fb_par *par = info->par;
int ret, bpp;
/* get color info from register value */
ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL);
if (ret)
return ret;
var->bits_per_pixel = bpp;
if ((var->grayscale) && (var->bits_per_pixel == 1))
fix->visual = FB_VISUAL_MONO10;
else if (var->bits_per_pixel >= 15)
fix->visual = FB_VISUAL_TRUECOLOR;
else
fix->visual = FB_VISUAL_PSEUDOCOLOR;
/* TODO: add some more validation here */
return 0;
}
/*
* sh7760fb_set_par - set videomode.
*
* NOTE: The rotation, grayscale and DSTN codepaths are
* totally untested!
*/
static int sh7760fb_set_par(struct fb_info *info)
{
struct sh7760fb_par *par = info->par;
struct fb_videomode *vm = par->pd->def_mode;
unsigned long sbase, dstn_off, ldsarl, stride;
unsigned short hsynp, hsynw, htcn, hdcn;
unsigned short vsynp, vsynw, vtln, vdln;
unsigned short lddfr, ldmtr;
int ret, bpp, gray;
par->rot = par->pd->rotate;
/* rotate only works with xres <= 320 */
if (par->rot && (vm->xres > 320)) {
dev_dbg(info->dev, "rotation disabled due to display size\n");
par->rot = 0;
}
/* calculate LCDC reg vals from display parameters */
hsynp = vm->right_margin + vm->xres;
hsynw = vm->hsync_len;
htcn = vm->left_margin + hsynp + hsynw;
hdcn = vm->xres;
vsynp = vm->lower_margin + vm->yres;
vsynw = vm->vsync_len;
vtln = vm->upper_margin + vsynp + vsynw;
vdln = vm->yres;
/* get color info from register value */
ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, &gray);
if (ret)
return ret;
dev_dbg(info->dev, "%dx%d %dbpp %s (orientation %s)\n", hdcn,
vdln, bpp, gray ? "grayscale" : "color",
par->rot ? "rotated" : "normal");
#ifdef CONFIG_CPU_LITTLE_ENDIAN
lddfr = par->pd->lddfr | (1 << 8);
#else
lddfr = par->pd->lddfr & ~(1 << 8);
#endif
ldmtr = par->pd->ldmtr;
if (!(vm->sync & FB_SYNC_HOR_HIGH_ACT))
ldmtr |= LDMTR_CL1POL;
if (!(vm->sync & FB_SYNC_VERT_HIGH_ACT))
ldmtr |= LDMTR_FLMPOL;
/* shut down LCDC before changing display parameters */
sh7760fb_blank(FB_BLANK_POWERDOWN, info);
iowrite16(par->pd->ldickr, par->base + LDICKR); /* pixclock */
iowrite16(ldmtr, par->base + LDMTR); /* polarities */
iowrite16(lddfr, par->base + LDDFR); /* color/depth */
iowrite16((par->rot ? 1 << 13 : 0), par->base + LDSMR); /* rotate */
iowrite16(par->pd->ldpmmr, par->base + LDPMMR); /* Power Management */
iowrite16(par->pd->ldpspr, par->base + LDPSPR); /* Power Supply Ctrl */
/* display resolution */
iowrite16(((htcn >> 3) - 1) | (((hdcn >> 3) - 1) << 8),
par->base + LDHCNR);
iowrite16(vdln - 1, par->base + LDVDLNR);
iowrite16(vtln - 1, par->base + LDVTLNR);
/* h/v sync signals */
iowrite16((vsynp - 1) | ((vsynw - 1) << 12), par->base + LDVSYNR);
iowrite16(((hsynp >> 3) - 1) | (((hsynw >> 3) - 1) << 12),
par->base + LDHSYNR);
/* AC modulation sig */
iowrite16(par->pd->ldaclnr, par->base + LDACLNR);
stride = (par->rot) ? vtln : hdcn;
if (!gray)
stride *= (bpp + 7) >> 3;
else {
if (bpp == 1)
stride >>= 3;
else if (bpp == 2)
stride >>= 2;
else if (bpp == 4)
stride >>= 1;
/* 6 bpp == 8 bpp */
}
/* if rotated, stride must be power of 2 */
if (par->rot) {
unsigned long bit = 1 << 31;
while (bit) {
if (stride & bit)
break;
bit >>= 1;
}
if (stride & ~bit)
stride = bit << 1; /* not P-o-2, round up */
}
iowrite16(stride, par->base + LDLAOR);
/* set display mem start address */
sbase = (unsigned long)par->fbdma;
if (par->rot)
sbase += (hdcn - 1) * stride;
iowrite32(sbase, par->base + LDSARU);
/*
* for DSTN need to set address for lower half.
* I (mlau) don't know which address to set it to,
* so I guessed at (stride * yres/2).
*/
if (((ldmtr & 0x003f) >= LDMTR_DSTN_MONO_8) &&
((ldmtr & 0x003f) <= LDMTR_DSTN_COLOR_16)) {
dev_dbg(info->dev, " ***** DSTN untested! *****\n");
dstn_off = stride;
if (par->rot)
dstn_off *= hdcn >> 1;
else
dstn_off *= vdln >> 1;
ldsarl = sbase + dstn_off;
} else
ldsarl = 0;
iowrite32(ldsarl, par->base + LDSARL); /* mem for lower half of DSTN */
info->fix.line_length = stride;
sh7760fb_check_var(&info->var, info);
sh7760fb_blank(FB_BLANK_UNBLANK, info); /* panel on! */
dev_dbg(info->dev, "hdcn : %6d htcn : %6d\n", hdcn, htcn);
dev_dbg(info->dev, "hsynw : %6d hsynp : %6d\n", hsynw, hsynp);
dev_dbg(info->dev, "vdln : %6d vtln : %6d\n", vdln, vtln);
dev_dbg(info->dev, "vsynw : %6d vsynp : %6d\n", vsynw, vsynp);
dev_dbg(info->dev, "clksrc: %6d clkdiv: %6d\n",
(par->pd->ldickr >> 12) & 3, par->pd->ldickr & 0x1f);
dev_dbg(info->dev, "ldpmmr: 0x%04x ldpspr: 0x%04x\n", par->pd->ldpmmr,
par->pd->ldpspr);
dev_dbg(info->dev, "ldmtr : 0x%04x lddfr : 0x%04x\n", ldmtr, lddfr);
dev_dbg(info->dev, "ldlaor: %ld\n", stride);
dev_dbg(info->dev, "ldsaru: 0x%08lx ldsarl: 0x%08lx\n", sbase, ldsarl);
return 0;
}
static const struct fb_ops sh7760fb_ops = {
.owner = THIS_MODULE,
.fb_blank = sh7760fb_blank,
.fb_check_var = sh7760fb_check_var,
.fb_setcolreg = sh7760_setcolreg,
.fb_set_par = sh7760fb_set_par,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
static void sh7760fb_free_mem(struct fb_info *info)
{
struct sh7760fb_par *par = info->par;
if (!info->screen_base)
return;
dma_free_coherent(info->dev, info->screen_size,
info->screen_base, par->fbdma);
par->fbdma = 0;
info->screen_base = NULL;
info->screen_size = 0;
}
/* allocate the framebuffer memory. This memory must be in Area3,
* (dictated by the DMA engine) and contiguous, at a 512 byte boundary.
*/
static int sh7760fb_alloc_mem(struct fb_info *info)
{
struct sh7760fb_par *par = info->par;
void *fbmem;
unsigned long vram;
int ret, bpp;
if (info->screen_base)
return 0;
/* get color info from register value */
ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL);
if (ret) {
printk(KERN_ERR "colinfo\n");
return ret;
}
/* min VRAM: xres_min = 16, yres_min = 1, bpp = 1: 2byte -> 1 page
max VRAM: xres_max = 1024, yres_max = 1024, bpp = 16: 2MB */
vram = info->var.xres * info->var.yres;
if (info->var.grayscale) {
if (bpp == 1)
vram >>= 3;
else if (bpp == 2)
vram >>= 2;
else if (bpp == 4)
vram >>= 1;
} else if (bpp > 8)
vram *= 2;
if ((vram < 1) || (vram > 1024 * 2048)) {
dev_dbg(info->dev, "too much VRAM required. Check settings\n");
return -ENODEV;
}
if (vram < PAGE_SIZE)
vram = PAGE_SIZE;
fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL);
if (!fbmem)
return -ENOMEM;
if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) {
sh7760fb_free_mem(info);
dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is"
"unusable for the LCDC\n", (unsigned long)par->fbdma);
return -ENOMEM;
}
info->screen_base = fbmem;
info->screen_size = vram;
info->fix.smem_start = (unsigned long)info->screen_base;
info->fix.smem_len = info->screen_size;
return 0;
}
static int sh7760fb_probe(struct platform_device *pdev)
{
struct fb_info *info;
struct resource *res;
struct sh7760fb_par *par;
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (unlikely(res == NULL)) {
dev_err(&pdev->dev, "invalid resource\n");
return -EINVAL;
}
info = framebuffer_alloc(sizeof(struct sh7760fb_par), &pdev->dev);
if (!info)
return -ENOMEM;
par = info->par;
par->dev = pdev;
par->pd = pdev->dev.platform_data;
if (!par->pd) {
dev_dbg(info->dev, "no display setup data!\n");
ret = -ENODEV;
goto out_fb;
}
par->ioarea = request_mem_region(res->start,
resource_size(res), pdev->name);
if (!par->ioarea) {
dev_err(&pdev->dev, "mmio area busy\n");
ret = -EBUSY;
goto out_fb;
}
par->base = ioremap(res->start, resource_size(res));
if (!par->base) {
dev_err(&pdev->dev, "cannot remap\n");
ret = -ENODEV;
goto out_res;
}
iowrite16(0, par->base + LDINTR); /* disable vsync irq */
par->irq = platform_get_irq(pdev, 0);
if (par->irq >= 0) {
ret = request_irq(par->irq, sh7760fb_irq, 0,
"sh7760-lcdc", &par->vsync);
if (ret) {
dev_err(&pdev->dev, "cannot grab IRQ\n");
par->irq = -ENXIO;
} else
disable_irq_nosync(par->irq);
}
fb_videomode_to_var(&info->var, par->pd->def_mode);
ret = sh7760fb_alloc_mem(info);
if (ret) {
dev_dbg(info->dev, "framebuffer memory allocation failed!\n");
goto out_unmap;
}
info->pseudo_palette = par->pseudo_palette;
/* fixup color register bitpositions. These are fixed by hardware */
info->var.red.offset = 11;
info->var.red.length = 5;
info->var.red.msb_right = 0;
info->var.green.offset = 5;
info->var.green.length = 6;
info->var.green.msb_right = 0;
info->var.blue.offset = 0;
info->var.blue.length = 5;
info->var.blue.msb_right = 0;
info->var.transp.offset = 0;
info->var.transp.length = 0;
info->var.transp.msb_right = 0;
strcpy(info->fix.id, "sh7760-lcdc");
/* set the DON2 bit now, before cmap allocation, as it will randomize
* palette memory.
*/
iowrite16(LDCNTR_DON2, par->base + LDCNTR);
info->fbops = &sh7760fb_ops;
ret = fb_alloc_cmap(&info->cmap, 256, 0);
if (ret) {
dev_dbg(info->dev, "Unable to allocate cmap memory\n");
goto out_mem;
}
ret = register_framebuffer(info);
if (ret < 0) {
dev_dbg(info->dev, "cannot register fb!\n");
goto out_cmap;
}
platform_set_drvdata(pdev, info);
printk(KERN_INFO "%s: memory at phys 0x%08lx-0x%08lx, size %ld KiB\n",
pdev->name,
(unsigned long)par->fbdma,
(unsigned long)(par->fbdma + info->screen_size - 1),
info->screen_size >> 10);
return 0;
out_cmap:
sh7760fb_blank(FB_BLANK_POWERDOWN, info);
fb_dealloc_cmap(&info->cmap);
out_mem:
sh7760fb_free_mem(info);
out_unmap:
if (par->irq >= 0)
free_irq(par->irq, &par->vsync);
iounmap(par->base);
out_res:
release_mem_region(res->start, resource_size(res));
out_fb:
framebuffer_release(info);
return ret;
}
static int sh7760fb_remove(struct platform_device *dev)
{
struct fb_info *info = platform_get_drvdata(dev);
struct sh7760fb_par *par = info->par;
sh7760fb_blank(FB_BLANK_POWERDOWN, info);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
sh7760fb_free_mem(info);
if (par->irq >= 0)
free_irq(par->irq, &par->vsync);
iounmap(par->base);
release_mem_region(par->ioarea->start, resource_size(par->ioarea));
framebuffer_release(info);
return 0;
}
static struct platform_driver sh7760_lcdc_driver = {
.driver = {
.name = "sh7760-lcdc",
},
.probe = sh7760fb_probe,
.remove = sh7760fb_remove,
};
module_platform_driver(sh7760_lcdc_driver);
MODULE_AUTHOR("Nobuhiro Iwamatsu, Manuel Lauss");
MODULE_DESCRIPTION("FBdev for SH7760/63 integrated LCD Controller");
MODULE_LICENSE("GPL v2");