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// SPDX-License-Identifier: GPL-2.0-only
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/**************************************************************************
* Copyright ( c ) 2011 , Intel Corporation .
* All Rights Reserved .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* TODO
* - Split functions by vbt type
* - Make them all take drm_device
* - Check ioremap failures
*/
# include <drm/drm.h>
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# include "mid_bios.h"
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# include "psb_drv.h"
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static void mid_get_fuse_settings ( struct drm_device * dev )
{
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struct drm_psb_private * dev_priv = to_drm_psb_private ( dev ) ;
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struct pci_dev * pdev = to_pci_dev ( dev - > dev ) ;
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struct pci_dev * pci_root =
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pci_get_domain_bus_and_slot ( pci_domain_nr ( pdev - > bus ) ,
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0 , 0 ) ;
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uint32_t fuse_value = 0 ;
uint32_t fuse_value_tmp = 0 ;
# define FB_REG06 0xD0810600
# define FB_MIPI_DISABLE (1 << 11)
# define FB_REG09 0xD0810900
# define FB_SKU_MASK 0x7000
# define FB_SKU_SHIFT 12
# define FB_SKU_100 0
# define FB_SKU_100L 1
# define FB_SKU_83 2
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if ( pci_root = = NULL ) {
WARN_ON ( 1 ) ;
return ;
}
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pci_write_config_dword ( pci_root , 0xD0 , FB_REG06 ) ;
pci_read_config_dword ( pci_root , 0xD4 , & fuse_value ) ;
/* FB_MIPI_DISABLE doesn't mean LVDS on with Medfield */
if ( IS_MRST ( dev ) )
dev_priv - > iLVDS_enable = fuse_value & FB_MIPI_DISABLE ;
DRM_INFO ( " internal display is %s \n " ,
dev_priv - > iLVDS_enable ? " LVDS display " : " MIPI display " ) ;
/* Prevent runtime suspend at start*/
if ( dev_priv - > iLVDS_enable ) {
dev_priv - > is_lvds_on = true ;
dev_priv - > is_mipi_on = false ;
} else {
dev_priv - > is_mipi_on = true ;
dev_priv - > is_lvds_on = false ;
}
dev_priv - > video_device_fuse = fuse_value ;
pci_write_config_dword ( pci_root , 0xD0 , FB_REG09 ) ;
pci_read_config_dword ( pci_root , 0xD4 , & fuse_value ) ;
dev_dbg ( dev - > dev , " SKU values is 0x%x. \n " , fuse_value ) ;
fuse_value_tmp = ( fuse_value & FB_SKU_MASK ) > > FB_SKU_SHIFT ;
dev_priv - > fuse_reg_value = fuse_value ;
switch ( fuse_value_tmp ) {
case FB_SKU_100 :
dev_priv - > core_freq = 200 ;
break ;
case FB_SKU_100L :
dev_priv - > core_freq = 100 ;
break ;
case FB_SKU_83 :
dev_priv - > core_freq = 166 ;
break ;
default :
dev_warn ( dev - > dev , " Invalid SKU values, SKU value = 0x%08x \n " ,
fuse_value_tmp ) ;
dev_priv - > core_freq = 0 ;
}
dev_dbg ( dev - > dev , " LNC core clk is %dMHz. \n " , dev_priv - > core_freq ) ;
pci_dev_put ( pci_root ) ;
}
/*
* Get the revison ID , B0 : D2 : F0 ; 0x08
*/
static void mid_get_pci_revID ( struct drm_psb_private * dev_priv )
{
uint32_t platform_rev_id = 0 ;
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struct pci_dev * pdev = to_pci_dev ( dev_priv - > dev . dev ) ;
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int domain = pci_domain_nr ( pdev - > bus ) ;
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struct pci_dev * pci_gfx_root =
pci_get_domain_bus_and_slot ( domain , 0 , PCI_DEVFN ( 2 , 0 ) ) ;
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if ( pci_gfx_root = = NULL ) {
WARN_ON ( 1 ) ;
return ;
}
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pci_read_config_dword ( pci_gfx_root , 0x08 , & platform_rev_id ) ;
dev_priv - > platform_rev_id = ( uint8_t ) platform_rev_id ;
pci_dev_put ( pci_gfx_root ) ;
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dev_dbg ( dev_priv - > dev . dev , " platform_rev_id is %x \n " , dev_priv - > platform_rev_id ) ;
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}
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struct mid_vbt_header {
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u32 signature ;
u8 revision ;
} __packed ;
/* The same for r0 and r1 */
struct vbt_r0 {
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struct mid_vbt_header vbt_header ;
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u8 size ;
u8 checksum ;
} __packed ;
struct vbt_r10 {
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struct mid_vbt_header vbt_header ;
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u8 checksum ;
u16 size ;
u8 panel_count ;
u8 primary_panel_idx ;
u8 secondary_panel_idx ;
u8 __reserved [ 5 ] ;
} __packed ;
static int read_vbt_r0 ( u32 addr , struct vbt_r0 * vbt )
{
void __iomem * vbt_virtual ;
vbt_virtual = ioremap ( addr , sizeof ( * vbt ) ) ;
if ( vbt_virtual = = NULL )
return - 1 ;
memcpy_fromio ( vbt , vbt_virtual , sizeof ( * vbt ) ) ;
iounmap ( vbt_virtual ) ;
return 0 ;
}
static int read_vbt_r10 ( u32 addr , struct vbt_r10 * vbt )
{
void __iomem * vbt_virtual ;
vbt_virtual = ioremap ( addr , sizeof ( * vbt ) ) ;
if ( ! vbt_virtual )
return - 1 ;
memcpy_fromio ( vbt , vbt_virtual , sizeof ( * vbt ) ) ;
iounmap ( vbt_virtual ) ;
return 0 ;
}
static int mid_get_vbt_data_r0 ( struct drm_psb_private * dev_priv , u32 addr )
{
struct vbt_r0 vbt ;
void __iomem * gct_virtual ;
struct gct_r0 gct ;
u8 bpi ;
if ( read_vbt_r0 ( addr , & vbt ) )
return - 1 ;
gct_virtual = ioremap ( addr + sizeof ( vbt ) , vbt . size - sizeof ( vbt ) ) ;
if ( ! gct_virtual )
return - 1 ;
memcpy_fromio ( & gct , gct_virtual , sizeof ( gct ) ) ;
iounmap ( gct_virtual ) ;
bpi = gct . PD . BootPanelIndex ;
dev_priv - > gct_data . bpi = bpi ;
dev_priv - > gct_data . pt = gct . PD . PanelType ;
dev_priv - > gct_data . DTD = gct . panel [ bpi ] . DTD ;
dev_priv - > gct_data . Panel_Port_Control =
gct . panel [ bpi ] . Panel_Port_Control ;
dev_priv - > gct_data . Panel_MIPI_Display_Descriptor =
gct . panel [ bpi ] . Panel_MIPI_Display_Descriptor ;
return 0 ;
}
static int mid_get_vbt_data_r1 ( struct drm_psb_private * dev_priv , u32 addr )
{
struct vbt_r0 vbt ;
void __iomem * gct_virtual ;
struct gct_r1 gct ;
u8 bpi ;
if ( read_vbt_r0 ( addr , & vbt ) )
return - 1 ;
gct_virtual = ioremap ( addr + sizeof ( vbt ) , vbt . size - sizeof ( vbt ) ) ;
if ( ! gct_virtual )
return - 1 ;
memcpy_fromio ( & gct , gct_virtual , sizeof ( gct ) ) ;
iounmap ( gct_virtual ) ;
bpi = gct . PD . BootPanelIndex ;
dev_priv - > gct_data . bpi = bpi ;
dev_priv - > gct_data . pt = gct . PD . PanelType ;
dev_priv - > gct_data . DTD = gct . panel [ bpi ] . DTD ;
dev_priv - > gct_data . Panel_Port_Control =
gct . panel [ bpi ] . Panel_Port_Control ;
dev_priv - > gct_data . Panel_MIPI_Display_Descriptor =
gct . panel [ bpi ] . Panel_MIPI_Display_Descriptor ;
return 0 ;
}
static int mid_get_vbt_data_r10 ( struct drm_psb_private * dev_priv , u32 addr )
{
struct vbt_r10 vbt ;
void __iomem * gct_virtual ;
struct gct_r10 * gct ;
struct oaktrail_timing_info * dp_ti = & dev_priv - > gct_data . DTD ;
struct gct_r10_timing_info * ti ;
int ret = - 1 ;
if ( read_vbt_r10 ( addr , & vbt ) )
return - 1 ;
treewide: kmalloc() -> kmalloc_array()
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:
kmalloc(a * b, gfp)
with:
kmalloc_array(a * b, gfp)
as well as handling cases of:
kmalloc(a * b * c, gfp)
with:
kmalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kmalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kmalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kmalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kmalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kmalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kmalloc
+ kmalloc_array
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kmalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kmalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kmalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kmalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kmalloc(C1 * C2 * C3, ...)
|
kmalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kmalloc(sizeof(THING) * C2, ...)
|
kmalloc(sizeof(TYPE) * C2, ...)
|
kmalloc(C1 * C2 * C3, ...)
|
kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- (E1) * E2
+ E1, E2
, ...)
|
- kmalloc
+ kmalloc_array
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kmalloc
+ kmalloc_array
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 13:55:00 -07:00
gct = kmalloc_array ( vbt . panel_count , sizeof ( * gct ) , GFP_KERNEL ) ;
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if ( ! gct )
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return - ENOMEM ;
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gct_virtual = ioremap ( addr + sizeof ( vbt ) ,
sizeof ( * gct ) * vbt . panel_count ) ;
if ( ! gct_virtual )
goto out ;
memcpy_fromio ( gct , gct_virtual , sizeof ( * gct ) ) ;
iounmap ( gct_virtual ) ;
dev_priv - > gct_data . bpi = vbt . primary_panel_idx ;
dev_priv - > gct_data . Panel_MIPI_Display_Descriptor =
gct [ vbt . primary_panel_idx ] . Panel_MIPI_Display_Descriptor ;
ti = & gct [ vbt . primary_panel_idx ] . DTD ;
dp_ti - > pixel_clock = ti - > pixel_clock ;
dp_ti - > hactive_hi = ti - > hactive_hi ;
dp_ti - > hactive_lo = ti - > hactive_lo ;
dp_ti - > hblank_hi = ti - > hblank_hi ;
dp_ti - > hblank_lo = ti - > hblank_lo ;
dp_ti - > hsync_offset_hi = ti - > hsync_offset_hi ;
dp_ti - > hsync_offset_lo = ti - > hsync_offset_lo ;
dp_ti - > hsync_pulse_width_hi = ti - > hsync_pulse_width_hi ;
dp_ti - > hsync_pulse_width_lo = ti - > hsync_pulse_width_lo ;
dp_ti - > vactive_hi = ti - > vactive_hi ;
dp_ti - > vactive_lo = ti - > vactive_lo ;
dp_ti - > vblank_hi = ti - > vblank_hi ;
dp_ti - > vblank_lo = ti - > vblank_lo ;
dp_ti - > vsync_offset_hi = ti - > vsync_offset_hi ;
dp_ti - > vsync_offset_lo = ti - > vsync_offset_lo ;
dp_ti - > vsync_pulse_width_hi = ti - > vsync_pulse_width_hi ;
dp_ti - > vsync_pulse_width_lo = ti - > vsync_pulse_width_lo ;
ret = 0 ;
out :
kfree ( gct ) ;
return ret ;
}
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static void mid_get_vbt_data ( struct drm_psb_private * dev_priv )
{
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struct drm_device * dev = & dev_priv - > dev ;
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struct pci_dev * pdev = to_pci_dev ( dev - > dev ) ;
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u32 addr ;
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u8 __iomem * vbt_virtual ;
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struct mid_vbt_header vbt_header ;
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struct pci_dev * pci_gfx_root =
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pci_get_domain_bus_and_slot ( pci_domain_nr ( pdev - > bus ) ,
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0 , PCI_DEVFN ( 2 , 0 ) ) ;
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int ret = - 1 ;
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2012-05-03 16:27:21 +01:00
/* Get the address of the platform config vbt */
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pci_read_config_dword ( pci_gfx_root , 0xFC , & addr ) ;
pci_dev_put ( pci_gfx_root ) ;
dev_dbg ( dev - > dev , " drm platform config address is %x \n " , addr ) ;
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if ( ! addr )
goto out ;
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/* get the virtual address of the vbt */
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vbt_virtual = ioremap ( addr , sizeof ( vbt_header ) ) ;
if ( ! vbt_virtual )
goto out ;
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2012-05-03 16:27:21 +01:00
memcpy_fromio ( & vbt_header , vbt_virtual , sizeof ( vbt_header ) ) ;
iounmap ( vbt_virtual ) ;
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2012-05-03 16:27:21 +01:00
if ( memcmp ( & vbt_header . signature , " $GCT " , 4 ) )
goto out ;
dev_dbg ( dev - > dev , " GCT revision is %02x \n " , vbt_header . revision ) ;
2011-11-29 22:27:45 +00:00
2012-05-03 16:27:21 +01:00
switch ( vbt_header . revision ) {
case 0x00 :
ret = mid_get_vbt_data_r0 ( dev_priv , addr ) ;
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break ;
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case 0x01 :
ret = mid_get_vbt_data_r1 ( dev_priv , addr ) ;
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break ;
case 0x10 :
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ret = mid_get_vbt_data_r10 ( dev_priv , addr ) ;
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break ;
default :
dev_err ( dev - > dev , " Unknown revision of GCT! \n " ) ;
}
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out :
if ( ret )
dev_err ( dev - > dev , " Unable to read GCT! " ) ;
else
dev_priv - > has_gct = true ;
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}
int mid_chip_setup ( struct drm_device * dev )
{
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struct drm_psb_private * dev_priv = to_drm_psb_private ( dev ) ;
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mid_get_fuse_settings ( dev ) ;
mid_get_vbt_data ( dev_priv ) ;
mid_get_pci_revID ( dev_priv ) ;
return 0 ;
}
