linux/drivers/video/fbdev/pmagb-b-fb.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

412 lines
10 KiB
C

/*
* linux/drivers/video/pmagb-b-fb.c
*
* PMAGB-B TURBOchannel Smart Frame Buffer (SFB) card support,
* derived from:
* "HP300 Topcat framebuffer support (derived from macfb of all things)
* Phil Blundell <philb@gnu.org> 1998", the original code can be
* found in the file hpfb.c in the same directory.
*
* DECstation related code Copyright (C) 1999, 2000, 2001 by
* Michael Engel <engel@unix-ag.org>,
* Karsten Merker <merker@linuxtag.org> and
* Harald Koerfgen.
* Copyright (c) 2005, 2006 Maciej W. Rozycki
*
* 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/compiler.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/tc.h>
#include <linux/types.h>
#include <asm/io.h>
#include <video/pmagb-b-fb.h>
struct pmagbbfb_par {
volatile void __iomem *mmio;
volatile void __iomem *smem;
volatile u32 __iomem *sfb;
volatile u32 __iomem *dac;
unsigned int osc0;
unsigned int osc1;
int slot;
};
static const struct fb_var_screeninfo pmagbbfb_defined = {
.bits_per_pixel = 8,
.red.length = 8,
.green.length = 8,
.blue.length = 8,
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.accel_flags = FB_ACCEL_NONE,
.sync = FB_SYNC_ON_GREEN,
.vmode = FB_VMODE_NONINTERLACED,
};
static const struct fb_fix_screeninfo pmagbbfb_fix = {
.id = "PMAGB-BA",
.smem_len = (2048 * 1024),
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_PSEUDOCOLOR,
.mmio_len = PMAGB_B_FBMEM,
};
static inline void sfb_write(struct pmagbbfb_par *par, unsigned int reg, u32 v)
{
writel(v, par->sfb + reg / 4);
}
static inline u32 sfb_read(struct pmagbbfb_par *par, unsigned int reg)
{
return readl(par->sfb + reg / 4);
}
static inline void dac_write(struct pmagbbfb_par *par, unsigned int reg, u8 v)
{
writeb(v, par->dac + reg / 4);
}
static inline u8 dac_read(struct pmagbbfb_par *par, unsigned int reg)
{
return readb(par->dac + reg / 4);
}
static inline void gp0_write(struct pmagbbfb_par *par, u32 v)
{
writel(v, par->mmio + PMAGB_B_GP0);
}
/*
* Set the palette.
*/
static int pmagbbfb_setcolreg(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
unsigned int transp, struct fb_info *info)
{
struct pmagbbfb_par *par = info->par;
if (regno >= info->cmap.len)
return 1;
red >>= 8; /* The cmap fields are 16 bits */
green >>= 8; /* wide, but the hardware colormap */
blue >>= 8; /* registers are only 8 bits wide */
mb();
dac_write(par, BT459_ADDR_LO, regno);
dac_write(par, BT459_ADDR_HI, 0x00);
wmb();
dac_write(par, BT459_CMAP, red);
wmb();
dac_write(par, BT459_CMAP, green);
wmb();
dac_write(par, BT459_CMAP, blue);
return 0;
}
static const struct fb_ops pmagbbfb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = pmagbbfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
/*
* Turn the hardware cursor off.
*/
static void pmagbbfb_erase_cursor(struct fb_info *info)
{
struct pmagbbfb_par *par = info->par;
mb();
dac_write(par, BT459_ADDR_LO, 0x00);
dac_write(par, BT459_ADDR_HI, 0x03);
wmb();
dac_write(par, BT459_DATA, 0x00);
}
/*
* Set up screen parameters.
*/
static void pmagbbfb_screen_setup(struct fb_info *info)
{
struct pmagbbfb_par *par = info->par;
info->var.xres = ((sfb_read(par, SFB_REG_VID_HOR) >>
SFB_VID_HOR_PIX_SHIFT) & SFB_VID_HOR_PIX_MASK) * 4;
info->var.xres_virtual = info->var.xres;
info->var.yres = (sfb_read(par, SFB_REG_VID_VER) >>
SFB_VID_VER_SL_SHIFT) & SFB_VID_VER_SL_MASK;
info->var.yres_virtual = info->var.yres;
info->var.left_margin = ((sfb_read(par, SFB_REG_VID_HOR) >>
SFB_VID_HOR_BP_SHIFT) &
SFB_VID_HOR_BP_MASK) * 4;
info->var.right_margin = ((sfb_read(par, SFB_REG_VID_HOR) >>
SFB_VID_HOR_FP_SHIFT) &
SFB_VID_HOR_FP_MASK) * 4;
info->var.upper_margin = (sfb_read(par, SFB_REG_VID_VER) >>
SFB_VID_VER_BP_SHIFT) & SFB_VID_VER_BP_MASK;
info->var.lower_margin = (sfb_read(par, SFB_REG_VID_VER) >>
SFB_VID_VER_FP_SHIFT) & SFB_VID_VER_FP_MASK;
info->var.hsync_len = ((sfb_read(par, SFB_REG_VID_HOR) >>
SFB_VID_HOR_SYN_SHIFT) &
SFB_VID_HOR_SYN_MASK) * 4;
info->var.vsync_len = (sfb_read(par, SFB_REG_VID_VER) >>
SFB_VID_VER_SYN_SHIFT) & SFB_VID_VER_SYN_MASK;
info->fix.line_length = info->var.xres;
};
/*
* Determine oscillator configuration.
*/
static void pmagbbfb_osc_setup(struct fb_info *info)
{
static unsigned int pmagbbfb_freqs[] = {
130808, 119843, 104000, 92980, 74370, 72800,
69197, 66000, 65000, 50350, 36000, 32000, 25175
};
struct pmagbbfb_par *par = info->par;
struct tc_bus *tbus = to_tc_dev(info->device)->bus;
u32 count0 = 8, count1 = 8, counttc = 16 * 256 + 8;
u32 freq0, freq1, freqtc = tc_get_speed(tbus) / 250;
int i, j;
gp0_write(par, 0); /* select Osc0 */
for (j = 0; j < 16; j++) {
mb();
sfb_write(par, SFB_REG_TCCLK_COUNT, 0);
mb();
for (i = 0; i < 100; i++) { /* nominally max. 20.5us */
if (sfb_read(par, SFB_REG_TCCLK_COUNT) == 0)
break;
udelay(1);
}
count0 += sfb_read(par, SFB_REG_VIDCLK_COUNT);
}
gp0_write(par, 1); /* select Osc1 */
for (j = 0; j < 16; j++) {
mb();
sfb_write(par, SFB_REG_TCCLK_COUNT, 0);
for (i = 0; i < 100; i++) { /* nominally max. 20.5us */
if (sfb_read(par, SFB_REG_TCCLK_COUNT) == 0)
break;
udelay(1);
}
count1 += sfb_read(par, SFB_REG_VIDCLK_COUNT);
}
freq0 = (freqtc * count0 + counttc / 2) / counttc;
par->osc0 = freq0;
if (freq0 >= pmagbbfb_freqs[0] - (pmagbbfb_freqs[0] + 32) / 64 &&
freq0 <= pmagbbfb_freqs[0] + (pmagbbfb_freqs[0] + 32) / 64)
par->osc0 = pmagbbfb_freqs[0];
freq1 = (par->osc0 * count1 + count0 / 2) / count0;
par->osc1 = freq1;
for (i = 0; i < ARRAY_SIZE(pmagbbfb_freqs); i++)
if (freq1 >= pmagbbfb_freqs[i] -
(pmagbbfb_freqs[i] + 128) / 256 &&
freq1 <= pmagbbfb_freqs[i] +
(pmagbbfb_freqs[i] + 128) / 256) {
par->osc1 = pmagbbfb_freqs[i];
break;
}
if (par->osc0 - par->osc1 <= (par->osc0 + par->osc1 + 256) / 512 ||
par->osc1 - par->osc0 <= (par->osc0 + par->osc1 + 256) / 512)
par->osc1 = 0;
gp0_write(par, par->osc1 != 0); /* reselect OscX */
info->var.pixclock = par->osc1 ?
(1000000000 + par->osc1 / 2) / par->osc1 :
(1000000000 + par->osc0 / 2) / par->osc0;
};
static int pmagbbfb_probe(struct device *dev)
{
struct tc_dev *tdev = to_tc_dev(dev);
resource_size_t start, len;
struct fb_info *info;
struct pmagbbfb_par *par;
char freq0[12], freq1[12];
u32 vid_base;
int err;
info = framebuffer_alloc(sizeof(struct pmagbbfb_par), dev);
if (!info)
return -ENOMEM;
par = info->par;
dev_set_drvdata(dev, info);
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
printk(KERN_ERR "%s: Cannot allocate color map\n",
dev_name(dev));
err = -ENOMEM;
goto err_alloc;
}
info->fbops = &pmagbbfb_ops;
info->fix = pmagbbfb_fix;
info->var = pmagbbfb_defined;
info->flags = FBINFO_DEFAULT;
/* Request the I/O MEM resource. */
start = tdev->resource.start;
len = tdev->resource.end - start + 1;
if (!request_mem_region(start, len, dev_name(dev))) {
printk(KERN_ERR "%s: Cannot reserve FB region\n",
dev_name(dev));
err = -EBUSY;
goto err_cmap;
}
/* MMIO mapping setup. */
info->fix.mmio_start = start;
par->mmio = ioremap(info->fix.mmio_start, info->fix.mmio_len);
if (!par->mmio) {
printk(KERN_ERR "%s: Cannot map MMIO\n", dev_name(dev));
err = -ENOMEM;
goto err_resource;
}
par->sfb = par->mmio + PMAGB_B_SFB;
par->dac = par->mmio + PMAGB_B_BT459;
/* Frame buffer mapping setup. */
info->fix.smem_start = start + PMAGB_B_FBMEM;
par->smem = ioremap(info->fix.smem_start, info->fix.smem_len);
if (!par->smem) {
printk(KERN_ERR "%s: Cannot map FB\n", dev_name(dev));
err = -ENOMEM;
goto err_mmio_map;
}
vid_base = sfb_read(par, SFB_REG_VID_BASE);
info->screen_base = (void __iomem *)par->smem + vid_base * 0x1000;
info->screen_size = info->fix.smem_len - 2 * vid_base * 0x1000;
pmagbbfb_erase_cursor(info);
pmagbbfb_screen_setup(info);
pmagbbfb_osc_setup(info);
err = register_framebuffer(info);
if (err < 0) {
printk(KERN_ERR "%s: Cannot register framebuffer\n",
dev_name(dev));
goto err_smem_map;
}
get_device(dev);
snprintf(freq0, sizeof(freq0), "%u.%03uMHz",
par->osc0 / 1000, par->osc0 % 1000);
snprintf(freq1, sizeof(freq1), "%u.%03uMHz",
par->osc1 / 1000, par->osc1 % 1000);
fb_info(info, "%s frame buffer device at %s\n",
info->fix.id, dev_name(dev));
fb_info(info, "Osc0: %s, Osc1: %s, Osc%u selected\n",
freq0, par->osc1 ? freq1 : "disabled", par->osc1 != 0);
return 0;
err_smem_map:
iounmap(par->smem);
err_mmio_map:
iounmap(par->mmio);
err_resource:
release_mem_region(start, len);
err_cmap:
fb_dealloc_cmap(&info->cmap);
err_alloc:
framebuffer_release(info);
return err;
}
static int pmagbbfb_remove(struct device *dev)
{
struct tc_dev *tdev = to_tc_dev(dev);
struct fb_info *info = dev_get_drvdata(dev);
struct pmagbbfb_par *par = info->par;
resource_size_t start, len;
put_device(dev);
unregister_framebuffer(info);
iounmap(par->smem);
iounmap(par->mmio);
start = tdev->resource.start;
len = tdev->resource.end - start + 1;
release_mem_region(start, len);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
return 0;
}
/*
* Initialize the framebuffer.
*/
static const struct tc_device_id pmagbbfb_tc_table[] = {
{ "DEC ", "PMAGB-BA" },
{ }
};
MODULE_DEVICE_TABLE(tc, pmagbbfb_tc_table);
static struct tc_driver pmagbbfb_driver = {
.id_table = pmagbbfb_tc_table,
.driver = {
.name = "pmagbbfb",
.bus = &tc_bus_type,
.probe = pmagbbfb_probe,
.remove = pmagbbfb_remove,
},
};
static int __init pmagbbfb_init(void)
{
#ifndef MODULE
if (fb_get_options("pmagbbfb", NULL))
return -ENXIO;
#endif
return tc_register_driver(&pmagbbfb_driver);
}
static void __exit pmagbbfb_exit(void)
{
tc_unregister_driver(&pmagbbfb_driver);
}
module_init(pmagbbfb_init);
module_exit(pmagbbfb_exit);
MODULE_LICENSE("GPL");