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linux-next/drivers/video/carminefb.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

792 lines
22 KiB
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/*
* Frame buffer driver for the Carmine GPU.
*
* The driver configures the GPU as follows
* - FB0 is display 0 with unique memory area
* - FB1 is display 1 with unique memory area
* - both display use 32 bit colors
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "carminefb.h"
#include "carminefb_regs.h"
#if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
#error "The endianness of the target host has not been defined."
#endif
/*
* The initial video mode can be supplied via two different ways:
* - as a string that is passed to fb_find_mode() (module option fb_mode_str)
* - as an integer that picks the video mode from carmine_modedb[] (module
* option fb_mode)
*
* If nothing is used than the initial video mode will be the
* CARMINEFB_DEFAULT_VIDEO_MODE member of the carmine_modedb[].
*/
#define CARMINEFB_DEFAULT_VIDEO_MODE 1
static unsigned int fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
module_param(fb_mode, uint, 444);
MODULE_PARM_DESC(fb_mode, "Initial video mode as integer.");
static char *fb_mode_str;
module_param(fb_mode_str, charp, 444);
MODULE_PARM_DESC(fb_mode_str, "Initial video mode in characters.");
/*
* Carminefb displays:
* 0b000 None
* 0b001 Display 0
* 0b010 Display 1
*/
static int fb_displays = CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1;
module_param(fb_displays, int, 444);
MODULE_PARM_DESC(fb_displays, "Bit mode, which displays are used");
struct carmine_hw {
void __iomem *v_regs;
void __iomem *screen_mem;
struct fb_info *fb[MAX_DISPLAY];
};
struct carmine_resolution {
u32 htp;
u32 hsp;
u32 hsw;
u32 hdp;
u32 vtr;
u32 vsp;
u32 vsw;
u32 vdp;
u32 disp_mode;
};
struct carmine_fb {
void __iomem *display_reg;
void __iomem *screen_base;
u32 smem_offset;
u32 cur_mode;
u32 new_mode;
struct carmine_resolution *res;
u32 pseudo_palette[16];
};
static struct fb_fix_screeninfo carminefb_fix __devinitdata = {
.id = "Carmine",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.accel = FB_ACCEL_NONE,
};
static const struct fb_videomode carmine_modedb[] = {
{
.name = "640x480",
.xres = 640,
.yres = 480,
}, {
.name = "800x600",
.xres = 800,
.yres = 600,
},
};
static struct carmine_resolution car_modes[] = {
{
/* 640x480 */
.htp = 800,
.hsp = 672,
.hsw = 96,
.hdp = 640,
.vtr = 525,
.vsp = 490,
.vsw = 2,
.vdp = 480,
.disp_mode = 0x1400,
},
{
/* 800x600 */
.htp = 1060,
.hsp = 864,
.hsw = 72,
.hdp = 800,
.vtr = 628,
.vsp = 601,
.vsw = 2,
.vdp = 600,
.disp_mode = 0x0d00,
}
};
static int carmine_find_mode(const struct fb_var_screeninfo *var)
{
int i;
for (i = 0; i < ARRAY_SIZE(car_modes); i++)
if (car_modes[i].hdp == var->xres &&
car_modes[i].vdp == var->yres)
return i;
return -EINVAL;
}
static void c_set_disp_reg(const struct carmine_fb *par,
u32 offset, u32 val)
{
writel(val, par->display_reg + offset);
}
static u32 c_get_disp_reg(const struct carmine_fb *par,
u32 offset)
{
return readl(par->display_reg + offset);
}
static void c_set_hw_reg(const struct carmine_hw *hw,
u32 offset, u32 val)
{
writel(val, hw->v_regs + offset);
}
static u32 c_get_hw_reg(const struct carmine_hw *hw,
u32 offset)
{
return readl(hw->v_regs + offset);
}
static int carmine_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp, struct fb_info *info)
{
if (regno >= 16)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
transp >>= 8;
((__be32 *)info->pseudo_palette)[regno] = cpu_to_be32(transp << 24 |
red << 0 | green << 8 | blue << 16);
return 0;
}
static int carmine_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
int ret;
ret = carmine_find_mode(var);
if (ret < 0)
return ret;
if (var->grayscale || var->rotate || var->nonstd)
return -EINVAL;
var->xres_virtual = var->xres;
var->yres_virtual = var->yres;
var->bits_per_pixel = 32;
#ifdef __BIG_ENDIAN
var->transp.offset = 24;
var->red.offset = 0;
var->green.offset = 8;
var->blue.offset = 16;
#else
var->transp.offset = 24;
var->red.offset = 16;
var->green.offset = 8;
var->blue.offset = 0;
#endif
var->red.length = 8;
var->green.length = 8;
var->blue.length = 8;
var->transp.length = 8;
var->red.msb_right = 0;
var->green.msb_right = 0;
var->blue.msb_right = 0;
var->transp.msb_right = 0;
return 0;
}
static void carmine_init_display_param(struct carmine_fb *par)
{
u32 width;
u32 height;
u32 param;
u32 window_size;
u32 soffset = par->smem_offset;
c_set_disp_reg(par, CARMINE_DISP_REG_C_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_MLMR_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_CURSOR_MODE,
CARMINE_CURSOR0_PRIORITY_MASK |
CARMINE_CURSOR1_PRIORITY_MASK |
CARMINE_CURSOR_CUTZ_MASK);
/* Set default cursor position */
c_set_disp_reg(par, CARMINE_DISP_REG_CUR1_POS, 0 << 16 | 0);
c_set_disp_reg(par, CARMINE_DISP_REG_CUR2_POS, 0 << 16 | 0);
/* Set default display mode */
c_set_disp_reg(par, CARMINE_DISP_REG_L0_EXT_MODE, CARMINE_WINDOW_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_EXT_MODE,
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_EXT_MODE, CARMINE_EXTEND_MODE |
CARMINE_EXT_CMODE_DIRECT24_RGBA);
/* Set default frame size to layer mode register */
width = par->res->hdp * 4 / CARMINE_DISP_WIDTH_UNIT;
width = width << CARMINE_DISP_WIDTH_SHIFT;
height = par->res->vdp - 1;
param = width | height;
c_set_disp_reg(par, CARMINE_DISP_REG_L0_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIDTH, width);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_MODE_W_H, param);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_MODE_W_H, param);
/* Set default pos and size */
window_size = (par->res->vdp - 1) << CARMINE_DISP_WIN_H_SHIFT;
window_size |= par->res->hdp;
c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_SIZE, window_size);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_SIZE, window_size);
/* Set default origin address */
c_set_disp_reg(par, CARMINE_DISP_REG_L0_ORG_ADR, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_ORG_ADR, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_ORG_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_ORG_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_ORG_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_ORG_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_ORG_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_ORG_ADR1, soffset);
/* Set default display address */
c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_ADR, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_ADR1, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_ADR0, soffset);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_ADR0, soffset);
/* Set default display position */
c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_POS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_POS, 0);
/* Set default blend mode */
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L0, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L1, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L2, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L3, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L4, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L5, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L6, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L7, 0);
/* default transparency mode */
c_set_disp_reg(par, CARMINE_DISP_REG_L0_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L1_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6_TRANS, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7_TRANS, 0);
/* Set default read skip parameter */
c_set_disp_reg(par, CARMINE_DISP_REG_L0RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7RM, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L0PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7PX, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L0PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L2PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L3PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L4PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L5PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L6PY, 0);
c_set_disp_reg(par, CARMINE_DISP_REG_L7PY, 0);
}
static void set_display_parameters(struct carmine_fb *par)
{
u32 mode;
u32 hdp, vdp, htp, hsp, hsw, vtr, vsp, vsw;
/*
* display timing. Parameters are decreased by one because hardware
* spec is 0 to (n - 1)
* */
hdp = par->res->hdp - 1;
vdp = par->res->vdp - 1;
htp = par->res->htp - 1;
hsp = par->res->hsp - 1;
hsw = par->res->hsw - 1;
vtr = par->res->vtr - 1;
vsp = par->res->vsp - 1;
vsw = par->res->vsw - 1;
c_set_disp_reg(par, CARMINE_DISP_REG_H_TOTAL,
htp << CARMINE_DISP_HTP_SHIFT);
c_set_disp_reg(par, CARMINE_DISP_REG_H_PERIOD,
(hdp << CARMINE_DISP_HDB_SHIFT) | hdp);
c_set_disp_reg(par, CARMINE_DISP_REG_V_H_W_H_POS,
(vsw << CARMINE_DISP_VSW_SHIFT) |
(hsw << CARMINE_DISP_HSW_SHIFT) |
(hsp));
c_set_disp_reg(par, CARMINE_DISP_REG_V_TOTAL,
vtr << CARMINE_DISP_VTR_SHIFT);
c_set_disp_reg(par, CARMINE_DISP_REG_V_PERIOD_POS,
(vdp << CARMINE_DISP_VDP_SHIFT) | vsp);
/* clock */
mode = c_get_disp_reg(par, CARMINE_DISP_REG_DCM1);
mode = (mode & ~CARMINE_DISP_DCM_MASK) |
(par->res->disp_mode & CARMINE_DISP_DCM_MASK);
/* enable video output and layer 0 */
mode |= CARMINE_DEN | CARMINE_L0E;
c_set_disp_reg(par, CARMINE_DISP_REG_DCM1, mode);
}
static int carmine_set_par(struct fb_info *info)
{
struct carmine_fb *par = info->par;
int ret;
ret = carmine_find_mode(&info->var);
if (ret < 0)
return ret;
par->new_mode = ret;
if (par->cur_mode != par->new_mode) {
par->cur_mode = par->new_mode;
par->res = &car_modes[par->new_mode];
carmine_init_display_param(par);
set_display_parameters(par);
}
info->fix.line_length = info->var.xres * info->var.bits_per_pixel / 8;
return 0;
}
static int init_hardware(struct carmine_hw *hw)
{
u32 flags;
u32 loops;
u32 ret;
/* Initalize Carmine */
/* Sets internal clock */
c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE,
CARMINE_DFLT_IP_CLOCK_ENABLE);
/* Video signal output is turned off */
c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
/* Software reset */
c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 1);
c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 0);
/* I/O mode settings */
flags = CARMINE_DFLT_IP_DCTL_IO_CONT1 << 16 |
CARMINE_DFLT_IP_DCTL_IO_CONT0;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_IOCONT1_IOCONT0,
flags);
/* DRAM initial sequence */
flags = CARMINE_DFLT_IP_DCTL_MODE << 16 | CARMINE_DFLT_IP_DCTL_ADD;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD,
flags);
flags = CARMINE_DFLT_IP_DCTL_SET_TIME1 << 16 |
CARMINE_DFLT_IP_DCTL_EMODE;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_SETTIME1_EMODE,
flags);
flags = CARMINE_DFLT_IP_DCTL_REFRESH << 16 |
CARMINE_DFLT_IP_DCTL_SET_TIME2;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_REFRESH_SETTIME2,
flags);
flags = CARMINE_DFLT_IP_DCTL_RESERVE2 << 16 |
CARMINE_DFLT_IP_DCTL_FIFO_DEPTH;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV2_RSV1, flags);
flags = CARMINE_DFLT_IP_DCTL_DDRIF2 << 16 | CARMINE_DFLT_IP_DCTL_DDRIF1;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_DDRIF2_DDRIF1,
flags);
flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
CARMINE_DFLT_IP_DCTL_STATES;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
flags);
/* Executes DLL reset */
if (CARMINE_DCTL_DLL_RESET) {
for (loops = 0; loops < CARMINE_DCTL_INIT_WAIT_LIMIT; loops++) {
ret = c_get_hw_reg(hw, CARMINE_DCTL_REG +
CARMINE_DCTL_REG_RSV0_STATES);
ret &= CARMINE_DCTL_REG_STATES_MASK;
if (!ret)
break;
mdelay(CARMINE_DCTL_INIT_WAIT_INTERVAL);
}
if (loops >= CARMINE_DCTL_INIT_WAIT_LIMIT) {
printk(KERN_ERR "DRAM init failed\n");
return -EIO;
}
}
flags = CARMINE_DFLT_IP_DCTL_MODE_AFT_RST << 16 |
CARMINE_DFLT_IP_DCTL_ADD;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD, flags);
flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
CARMINE_DFLT_IP_DCTL_STATES_AFT_RST;
c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
flags);
/* Initialize the write back register */
c_set_hw_reg(hw, CARMINE_WB_REG + CARMINE_WB_REG_WBM,
CARMINE_WB_REG_WBM_DEFAULT);
/* Initialize the Kottos registers */
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRINTM, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRERRM, 0);
/* Set DC offsets */
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PX, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PY, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LX, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LY, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TX, 0);
c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TY, 0);
return 0;
}
static struct fb_ops carminefb_ops = {
.owner = THIS_MODULE,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_check_var = carmine_check_var,
.fb_set_par = carmine_set_par,
.fb_setcolreg = carmine_setcolreg,
};
static int __devinit alloc_carmine_fb(void __iomem *regs, void __iomem *smem_base,
int smem_offset, struct device *device, struct fb_info **rinfo)
{
int ret;
struct fb_info *info;
struct carmine_fb *par;
info = framebuffer_alloc(sizeof *par, device);
if (!info)
return -ENOMEM;
par = info->par;
par->display_reg = regs;
par->smem_offset = smem_offset;
info->screen_base = smem_base + smem_offset;
info->screen_size = CARMINE_DISPLAY_MEM;
info->fbops = &carminefb_ops;
info->fix = carminefb_fix;
info->pseudo_palette = par->pseudo_palette;
info->flags = FBINFO_DEFAULT;
ret = fb_alloc_cmap(&info->cmap, 256, 1);
if (ret < 0)
goto err_free_fb;
if (fb_mode >= ARRAY_SIZE(carmine_modedb))
fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
par->cur_mode = par->new_mode = ~0;
ret = fb_find_mode(&info->var, info, fb_mode_str, carmine_modedb,
ARRAY_SIZE(carmine_modedb),
&carmine_modedb[fb_mode], 32);
if (!ret || ret == 4) {
ret = -EINVAL;
goto err_dealloc_cmap;
}
fb_videomode_to_modelist(carmine_modedb, ARRAY_SIZE(carmine_modedb),
&info->modelist);
ret = register_framebuffer(info);
if (ret < 0)
goto err_dealloc_cmap;
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
info->fix.id);
*rinfo = info;
return 0;
err_dealloc_cmap:
fb_dealloc_cmap(&info->cmap);
err_free_fb:
framebuffer_release(info);
return ret;
}
static void cleanup_fb_device(struct fb_info *info)
{
if (info) {
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
}
static int __devinit carminefb_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
{
struct carmine_hw *hw;
struct device *device = &dev->dev;
struct fb_info *info;
int ret;
ret = pci_enable_device(dev);
if (ret)
return ret;
ret = -ENOMEM;
hw = kzalloc(sizeof *hw, GFP_KERNEL);
if (!hw)
goto err_enable_pci;
carminefb_fix.mmio_start = pci_resource_start(dev, CARMINE_CONFIG_BAR);
carminefb_fix.mmio_len = pci_resource_len(dev, CARMINE_CONFIG_BAR);
if (!request_mem_region(carminefb_fix.mmio_start,
carminefb_fix.mmio_len,
"carminefb regbase")) {
printk(KERN_ERR "carminefb: Can't reserve regbase.\n");
ret = -EBUSY;
goto err_free_hw;
}
hw->v_regs = ioremap_nocache(carminefb_fix.mmio_start,
carminefb_fix.mmio_len);
if (!hw->v_regs) {
printk(KERN_ERR "carminefb: Can't remap %s register.\n",
carminefb_fix.id);
goto err_free_reg_mmio;
}
carminefb_fix.smem_start = pci_resource_start(dev, CARMINE_MEMORY_BAR);
carminefb_fix.smem_len = pci_resource_len(dev, CARMINE_MEMORY_BAR);
/* The memory area tends to be very large (256 MiB). Remap only what
* is required for that largest resolution to avoid remaps at run
* time
*/
if (carminefb_fix.smem_len > CARMINE_TOTAL_DIPLAY_MEM)
carminefb_fix.smem_len = CARMINE_TOTAL_DIPLAY_MEM;
else if (carminefb_fix.smem_len < CARMINE_TOTAL_DIPLAY_MEM) {
printk(KERN_ERR "carminefb: Memory bar is only %d bytes, %d "
"are required.", carminefb_fix.smem_len,
CARMINE_TOTAL_DIPLAY_MEM);
goto err_free_reg_mmio;
}
if (!request_mem_region(carminefb_fix.smem_start,
carminefb_fix.smem_len, "carminefb smem")) {
printk(KERN_ERR "carminefb: Can't reserve smem.\n");
goto err_unmap_vregs;
}
hw->screen_mem = ioremap_nocache(carminefb_fix.smem_start,
carminefb_fix.smem_len);
if (!hw->screen_mem) {
printk(KERN_ERR "carmine: Can't ioremap smem area.\n");
release_mem_region(carminefb_fix.smem_start,
carminefb_fix.smem_len);
goto err_reg_smem;
}
ret = init_hardware(hw);
if (ret)
goto err_unmap_screen;
info = NULL;
if (fb_displays & CARMINE_USE_DISPLAY0) {
ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP0_REG,
hw->screen_mem, CARMINE_DISPLAY_MEM * 0,
device, &info);
if (ret)
goto err_deinit_hw;
}
hw->fb[0] = info;
info = NULL;
if (fb_displays & CARMINE_USE_DISPLAY1) {
ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP1_REG,
hw->screen_mem, CARMINE_DISPLAY_MEM * 1,
device, &info);
if (ret)
goto err_cleanup_fb0;
}
hw->fb[1] = info;
info = NULL;
pci_set_drvdata(dev, hw);
return 0;
err_cleanup_fb0:
cleanup_fb_device(hw->fb[0]);
err_deinit_hw:
/* disable clock, etc */
c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
err_unmap_screen:
iounmap(hw->screen_mem);
err_reg_smem:
release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
err_unmap_vregs:
iounmap(hw->v_regs);
err_free_reg_mmio:
release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
err_free_hw:
kfree(hw);
err_enable_pci:
pci_disable_device(dev);
return ret;
}
static void __devexit carminefb_remove(struct pci_dev *dev)
{
struct carmine_hw *hw = pci_get_drvdata(dev);
struct fb_fix_screeninfo fix;
int i;
/* in case we use only fb1 and not fb1 */
if (hw->fb[0])
fix = hw->fb[0]->fix;
else
fix = hw->fb[1]->fix;
/* deactivate display(s) and switch clocks */
c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
for (i = 0; i < MAX_DISPLAY; i++)
cleanup_fb_device(hw->fb[i]);
iounmap(hw->screen_mem);
release_mem_region(fix.smem_start, fix.smem_len);
iounmap(hw->v_regs);
release_mem_region(fix.mmio_start, fix.mmio_len);
pci_set_drvdata(dev, NULL);
pci_disable_device(dev);
kfree(hw);
}
#define PCI_VENDOR_ID_FUJITU_LIMITED 0x10cf
static struct pci_device_id carmine_devices[] __devinitdata = {
{
PCI_DEVICE(PCI_VENDOR_ID_FUJITU_LIMITED, 0x202b)},
{0, 0, 0, 0, 0, 0, 0}
};
MODULE_DEVICE_TABLE(pci, carmine_devices);
static struct pci_driver carmine_pci_driver = {
.name = "carminefb",
.id_table = carmine_devices,
.probe = carminefb_probe,
.remove = __devexit_p(carminefb_remove),
};
static int __init carminefb_init(void)
{
if (!(fb_displays &
(CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1))) {
printk(KERN_ERR "If you disable both displays than you don't "
"need the driver at all\n");
return -EINVAL;
}
return pci_register_driver(&carmine_pci_driver);
}
module_init(carminefb_init);
static void __exit carminefb_cleanup(void)
{
pci_unregister_driver(&carmine_pci_driver);
}
module_exit(carminefb_cleanup);
MODULE_AUTHOR("Sebastian Siewior <bigeasy@linutronix.de>");
MODULE_DESCRIPTION("Framebuffer driver for Fujitsu Carmine based devices");
MODULE_LICENSE("GPL v2");
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