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Commit 5c969aa7 authored by Damien Lespiau's avatar Damien Lespiau Committed by Daniel Vetter
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drm/i915: Make the intel_device_info structure kept in dev_priv writable 

Turns out it'd be nice to change some device information at run-time or simply
have some code to fill in the info struct instead of having to declare the
values in 30+ structures.

What prompted this change is handling fused out display/pipe and tweaking
num_pipes at run-time, but I'm quite sure we'll find other flags/limits to
stick into dev_priv->info.

Most of the changes were done with a sed:
sed -i -e 's/dev_priv->info->/dev_priv->info./g' drivers/gpu/drm/i915/*[ch]

with a few tweaks to make it all work:
- Change the field definition in struct drm_i915_private
- adjust i915_dump_device_info()
- adjust i915_driver_load()
- adjust the INTEL_INFO() macro

v2: cast the info pointer returned by INTEL_INFO() to be const to catch
    uses that would modify the structure post-initialization.
    (Ville Syrjälä)

v3: Redo the patch onto latest drm-nightly,
    Keep the info field const to catch post initialization writes
    instead of the v2 solution,
    Use a direct structure copy for the initial info initialization to
    use the compiler type safety (Ville Syrjälä)

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (for v2)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (for v2)
Signed-off-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 3d13ef2e
Hide whitespace changes
Inline Side-by-side
Showing with 82 additions and 79 deletions
drivers/gpu/drm/i915/i915_dma.c
View file @ 5c969aa7
......@@ -1442,7 +1442,7 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
static void i915_dump_device_info(struct drm_i915_private *dev_priv)
{
const struct intel_device_info *info = dev_priv->info;
const struct intel_device_info *info = &dev_priv->info;
#define PRINT_S(name) "%s"
#define SEP_EMPTY
......@@ -1473,7 +1473,7 @@ static void i915_dump_device_info(struct drm_i915_private *dev_priv)
int i915_driver_load(struct drm_device *dev, unsigned long flags)
{
struct drm_i915_private *dev_priv;
struct intel_device_info *info;
struct intel_device_info *info, *device_info;
int ret = 0, mmio_bar, mmio_size;
uint32_t aperture_size;
......@@ -1496,7 +1496,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
dev->dev_private = (void *)dev_priv;
dev_priv->dev = dev;
dev_priv->info = info;
/* copy initial configuration to dev_priv->info */
device_info = (struct intel_device_info *)&dev_priv->info;
*device_info = *info;
spin_lock_init(&dev_priv->irq_lock);
spin_lock_init(&dev_priv->gpu_error.lock);
......
drivers/gpu/drm/i915/i915_drv.h
View file @ 5c969aa7
......@@ -1390,7 +1390,7 @@ typedef struct drm_i915_private {
struct drm_device *dev;
struct kmem_cache *slab;
const struct intel_device_info *info;
const struct intel_device_info info;
int relative_constants_mode;
......@@ -1799,7 +1799,7 @@ struct drm_i915_file_private {
atomic_t rps_wait_boost;
};
#define INTEL_INFO(dev) (to_i915(dev)->info)
#define INTEL_INFO(dev) (&to_i915(dev)->info)
#define IS_I830(dev) ((dev)->pdev->device == 0x3577)
#define IS_845G(dev) ((dev)->pdev->device == 0x2562)
......
drivers/gpu/drm/i915/i915_reg.h
View file @ 5c969aa7
......@@ -1205,8 +1205,8 @@
*/
#define DPLL_A_OFFSET 0x6014
#define DPLL_B_OFFSET 0x6018
#define DPLL(pipe) (dev_priv->info->dpll_offsets[pipe] + \
dev_priv->info->display_mmio_offset)
#define DPLL(pipe) (dev_priv->info.dpll_offsets[pipe] + \
dev_priv->info.display_mmio_offset)
#define VGA0 0x6000
#define VGA1 0x6004
......@@ -1283,8 +1283,8 @@
#define DPLL_A_MD_OFFSET 0x601c /* 965+ only */
#define DPLL_B_MD_OFFSET 0x6020 /* 965+ only */
#define DPLL_MD(pipe) (dev_priv->info->dpll_md_offsets[pipe] + \
dev_priv->info->display_mmio_offset)
#define DPLL_MD(pipe) (dev_priv->info.dpll_md_offsets[pipe] + \
dev_priv->info.display_mmio_offset)
/*
* UDI pixel divider, controlling how many pixels are stuffed into a packet.
......@@ -1353,7 +1353,7 @@
#define DSTATE_PLL_D3_OFF (1<<3)
#define DSTATE_GFX_CLOCK_GATING (1<<1)
#define DSTATE_DOT_CLOCK_GATING (1<<0)
#define DSPCLK_GATE_D (dev_priv->info->display_mmio_offset + 0x6200)
#define DSPCLK_GATE_D (dev_priv->info.display_mmio_offset + 0x6200)
# define DPUNIT_B_CLOCK_GATE_DISABLE (1 << 30) /* 965 */
# define VSUNIT_CLOCK_GATE_DISABLE (1 << 29) /* 965 */
# define VRHUNIT_CLOCK_GATE_DISABLE (1 << 28) /* 965 */
......@@ -1479,8 +1479,8 @@
*/
#define PALETTE_A_OFFSET 0xa000
#define PALETTE_B_OFFSET 0xa800
#define PALETTE(pipe) (dev_priv->info->palette_offsets[pipe] + \
dev_priv->info->display_mmio_offset)
#define PALETTE(pipe) (dev_priv->info.palette_offsets[pipe] + \
dev_priv->info.display_mmio_offset)
/* MCH MMIO space */
......@@ -1970,9 +1970,9 @@
#define TRANSCODER_C_OFFSET 0x62000
#define TRANSCODER_EDP_OFFSET 0x6f000
#define _TRANSCODER2(pipe, reg) (dev_priv->info->trans_offsets[(pipe)] - \
dev_priv->info->trans_offsets[TRANSCODER_A] + (reg) + \
dev_priv->info->display_mmio_offset)
#define _TRANSCODER2(pipe, reg) (dev_priv->info.trans_offsets[(pipe)] - \
dev_priv->info.trans_offsets[TRANSCODER_A] + (reg) + \
dev_priv->info.display_mmio_offset)
#define HTOTAL(trans) _TRANSCODER2(trans, _HTOTAL_A)
#define HBLANK(trans) _TRANSCODER2(trans, _HBLANK_A)
......@@ -2099,7 +2099,7 @@
/* Hotplug control (945+ only) */
#define PORT_HOTPLUG_EN (dev_priv->info->display_mmio_offset + 0x61110)
#define PORT_HOTPLUG_EN (dev_priv->info.display_mmio_offset + 0x61110)
#define PORTB_HOTPLUG_INT_EN (1 << 29)
#define PORTC_HOTPLUG_INT_EN (1 << 28)
#define PORTD_HOTPLUG_INT_EN (1 << 27)
......@@ -2129,7 +2129,7 @@
#define CRT_HOTPLUG_DETECT_VOLTAGE_325MV (0 << 2)
#define CRT_HOTPLUG_DETECT_VOLTAGE_475MV (1 << 2)
#define PORT_HOTPLUG_STAT (dev_priv->info->display_mmio_offset + 0x61114)
#define PORT_HOTPLUG_STAT (dev_priv->info.display_mmio_offset + 0x61114)
/*
* HDMI/DP bits are gen4+
*
......@@ -2406,7 +2406,7 @@
#define PP_DIVISOR 0x61210
/* Panel fitting */
#define PFIT_CONTROL (dev_priv->info->display_mmio_offset + 0x61230)
#define PFIT_CONTROL (dev_priv->info.display_mmio_offset + 0x61230)
#define PFIT_ENABLE (1 << 31)
#define PFIT_PIPE_MASK (3 << 29)
#define PFIT_PIPE_SHIFT 29
......@@ -2424,7 +2424,7 @@
#define PFIT_SCALING_PROGRAMMED (1 << 26)
#define PFIT_SCALING_PILLAR (2 << 26)
#define PFIT_SCALING_LETTER (3 << 26)
#define PFIT_PGM_RATIOS (dev_priv->info->display_mmio_offset + 0x61234)
#define PFIT_PGM_RATIOS (dev_priv->info.display_mmio_offset + 0x61234)
/* Pre-965 */
#define PFIT_VERT_SCALE_SHIFT 20
#define PFIT_VERT_SCALE_MASK 0xfff00000
......@@ -2436,25 +2436,25 @@
#define PFIT_HORIZ_SCALE_SHIFT_965 0
#define PFIT_HORIZ_SCALE_MASK_965 0x00001fff
#define PFIT_AUTO_RATIOS (dev_priv->info->display_mmio_offset + 0x61238)
#define PFIT_AUTO_RATIOS (dev_priv->info.display_mmio_offset + 0x61238)
#define _VLV_BLC_PWM_CTL2_A (dev_priv->info->display_mmio_offset + 0x61250)
#define _VLV_BLC_PWM_CTL2_B (dev_priv->info->display_mmio_offset + 0x61350)
#define _VLV_BLC_PWM_CTL2_A (dev_priv->info.display_mmio_offset + 0x61250)
#define _VLV_BLC_PWM_CTL2_B (dev_priv->info.display_mmio_offset + 0x61350)
#define VLV_BLC_PWM_CTL2(pipe) _PIPE(pipe, _VLV_BLC_PWM_CTL2_A, \
_VLV_BLC_PWM_CTL2_B)
#define _VLV_BLC_PWM_CTL_A (dev_priv->info->display_mmio_offset + 0x61254)
#define _VLV_BLC_PWM_CTL_B (dev_priv->info->display_mmio_offset + 0x61354)
#define _VLV_BLC_PWM_CTL_A (dev_priv->info.display_mmio_offset + 0x61254)
#define _VLV_BLC_PWM_CTL_B (dev_priv->info.display_mmio_offset + 0x61354)
#define VLV_BLC_PWM_CTL(pipe) _PIPE(pipe, _VLV_BLC_PWM_CTL_A, \
_VLV_BLC_PWM_CTL_B)
#define _VLV_BLC_HIST_CTL_A (dev_priv->info->display_mmio_offset + 0x61260)
#define _VLV_BLC_HIST_CTL_B (dev_priv->info->display_mmio_offset + 0x61360)
#define _VLV_BLC_HIST_CTL_A (dev_priv->info.display_mmio_offset + 0x61260)
#define _VLV_BLC_HIST_CTL_B (dev_priv->info.display_mmio_offset + 0x61360)
#define VLV_BLC_HIST_CTL(pipe) _PIPE(pipe, _VLV_BLC_HIST_CTL_A, \
_VLV_BLC_HIST_CTL_B)
/* Backlight control */
#define BLC_PWM_CTL2 (dev_priv->info->display_mmio_offset + 0x61250) /* 965+ only */
#define BLC_PWM_CTL2 (dev_priv->info.display_mmio_offset + 0x61250) /* 965+ only */
#define BLM_PWM_ENABLE (1 << 31)
#define BLM_COMBINATION_MODE (1 << 30) /* gen4 only */
#define BLM_PIPE_SELECT (1 << 29)
......@@ -2477,7 +2477,7 @@
#define BLM_PHASE_IN_COUNT_MASK (0xff << 8)
#define BLM_PHASE_IN_INCR_SHIFT (0)
#define BLM_PHASE_IN_INCR_MASK (0xff << 0)
#define BLC_PWM_CTL (dev_priv->info->display_mmio_offset + 0x61254)
#define BLC_PWM_CTL (dev_priv->info.display_mmio_offset + 0x61254)
/*
* This is the most significant 15 bits of the number of backlight cycles in a
* complete cycle of the modulated backlight control.
......@@ -2499,7 +2499,7 @@
#define BACKLIGHT_DUTY_CYCLE_MASK_PNV (0xfffe)
#define BLM_POLARITY_PNV (1 << 0) /* pnv only */
#define BLC_HIST_CTL (dev_priv->info->display_mmio_offset + 0x61260)
#define BLC_HIST_CTL (dev_priv->info.display_mmio_offset + 0x61260)
/* New registers for PCH-split platforms. Safe where new bits show up, the
* register layout machtes with gen4 BLC_PWM_CTL[12]. */
......@@ -3288,9 +3288,9 @@
*/
#define PIPE_EDP_OFFSET 0x7f000
#define _PIPE2(pipe, reg) (dev_priv->info->pipe_offsets[pipe] - \
dev_priv->info->pipe_offsets[PIPE_A] + (reg) + \
dev_priv->info->display_mmio_offset)
#define _PIPE2(pipe, reg) (dev_priv->info.pipe_offsets[pipe] - \
dev_priv->info.pipe_offsets[PIPE_A] + (reg) + \
dev_priv->info.display_mmio_offset)
#define PIPECONF(pipe) _PIPE2(pipe, _PIPEACONF)
#define PIPEDSL(pipe) _PIPE2(pipe, _PIPEADSL)
......@@ -3352,7 +3352,7 @@
#define DSPARB_BEND_SHIFT 9 /* on 855 */
#define DSPARB_AEND_SHIFT 0
#define DSPFW1 (dev_priv->info->display_mmio_offset + 0x70034)
#define DSPFW1 (dev_priv->info.display_mmio_offset + 0x70034)
#define DSPFW_SR_SHIFT 23
#define DSPFW_SR_MASK (0x1ff<<23)
#define DSPFW_CURSORB_SHIFT 16
......@@ -3360,11 +3360,11 @@
#define DSPFW_PLANEB_SHIFT 8
#define DSPFW_PLANEB_MASK (0x7f<<8)
#define DSPFW_PLANEA_MASK (0x7f)
#define DSPFW2 (dev_priv->info->display_mmio_offset + 0x70038)
#define DSPFW2 (dev_priv->info.display_mmio_offset + 0x70038)
#define DSPFW_CURSORA_MASK 0x00003f00
#define DSPFW_CURSORA_SHIFT 8
#define DSPFW_PLANEC_MASK (0x7f)
#define DSPFW3 (dev_priv->info->display_mmio_offset + 0x7003c)
#define DSPFW3 (dev_priv->info.display_mmio_offset + 0x7003c)
#define DSPFW_HPLL_SR_EN (1<<31)
#define DSPFW_CURSOR_SR_SHIFT 24
#define PINEVIEW_SELF_REFRESH_EN (1<<30)
......@@ -3372,8 +3372,8 @@
#define DSPFW_HPLL_CURSOR_SHIFT 16
#define DSPFW_HPLL_CURSOR_MASK (0x3f<<16)
#define DSPFW_HPLL_SR_MASK (0x1ff)
#define DSPFW4 (dev_priv->info->display_mmio_offset + 0x70070)
#define DSPFW7 (dev_priv->info->display_mmio_offset + 0x7007c)
#define DSPFW4 (dev_priv->info.display_mmio_offset + 0x70070)
#define DSPFW7 (dev_priv->info.display_mmio_offset + 0x7007c)
/* drain latency register values*/
#define DRAIN_LATENCY_PRECISION_32 32
......@@ -3497,12 +3497,12 @@
#define PIPE_PIXEL_MASK 0x00ffffff
#define PIPE_PIXEL_SHIFT 0
/* GM45+ just has to be different */
#define _PIPEA_FRMCOUNT_GM45 (dev_priv->info->display_mmio_offset + 0x70040)
#define _PIPEA_FLIPCOUNT_GM45 (dev_priv->info->display_mmio_offset + 0x70044)
#define _PIPEA_FRMCOUNT_GM45 (dev_priv->info.display_mmio_offset + 0x70040)
#define _PIPEA_FLIPCOUNT_GM45 (dev_priv->info.display_mmio_offset + 0x70044)
#define PIPE_FRMCOUNT_GM45(pipe) _PIPE(pipe, _PIPEA_FRMCOUNT_GM45, _PIPEB_FRMCOUNT_GM45)
/* Cursor A & B regs */
#define _CURACNTR (dev_priv->info->display_mmio_offset + 0x70080)
#define _CURACNTR (dev_priv->info.display_mmio_offset + 0x70080)
/* Old style CUR*CNTR flags (desktop 8xx) */
#define CURSOR_ENABLE 0x80000000
#define CURSOR_GAMMA_ENABLE 0x40000000
......@@ -3525,16 +3525,16 @@
#define MCURSOR_PIPE_B (1 << 28)
#define MCURSOR_GAMMA_ENABLE (1 << 26)
#define CURSOR_TRICKLE_FEED_DISABLE (1 << 14)
#define _CURABASE (dev_priv->info->display_mmio_offset + 0x70084)
#define _CURAPOS (dev_priv->info->display_mmio_offset + 0x70088)
#define _CURABASE (dev_priv->info.display_mmio_offset + 0x70084)
#define _CURAPOS (dev_priv->info.display_mmio_offset + 0x70088)
#define CURSOR_POS_MASK 0x007FF
#define CURSOR_POS_SIGN 0x8000
#define CURSOR_X_SHIFT 0
#define CURSOR_Y_SHIFT 16
#define CURSIZE 0x700a0
#define _CURBCNTR (dev_priv->info->display_mmio_offset + 0x700c0)
#define _CURBBASE (dev_priv->info->display_mmio_offset + 0x700c4)
#define _CURBPOS (dev_priv->info->display_mmio_offset + 0x700c8)
#define _CURBCNTR (dev_priv->info.display_mmio_offset + 0x700c0)
#define _CURBBASE (dev_priv->info.display_mmio_offset + 0x700c4)
#define _CURBPOS (dev_priv->info.display_mmio_offset + 0x700c8)
#define _CURBCNTR_IVB 0x71080
#define _CURBBASE_IVB 0x71084
......@@ -3609,44 +3609,44 @@
#define I915_HI_DISPBASE(val) (val & DISP_BASEADDR_MASK)
/* VBIOS flags */
#define SWF00 (dev_priv->info->display_mmio_offset + 0x71410)
#define SWF01 (dev_priv->info->display_mmio_offset + 0x71414)
#define SWF02 (dev_priv->info->display_mmio_offset + 0x71418)
#define SWF03 (dev_priv->info->display_mmio_offset + 0x7141c)
#define SWF04 (dev_priv->info->display_mmio_offset + 0x71420)
#define SWF05 (dev_priv->info->display_mmio_offset + 0x71424)
#define SWF06 (dev_priv->info->display_mmio_offset + 0x71428)
#define SWF10 (dev_priv->info->display_mmio_offset + 0x70410)
#define SWF11 (dev_priv->info->display_mmio_offset + 0x70414)
#define SWF14 (dev_priv->info->display_mmio_offset + 0x71420)
#define SWF30 (dev_priv->info->display_mmio_offset + 0x72414)
#define SWF31 (dev_priv->info->display_mmio_offset + 0x72418)
#define SWF32 (dev_priv->info->display_mmio_offset + 0x7241c)
#define SWF00 (dev_priv->info.display_mmio_offset + 0x71410)
#define SWF01 (dev_priv->info.display_mmio_offset + 0x71414)
#define SWF02 (dev_priv->info.display_mmio_offset + 0x71418)
#define SWF03 (dev_priv->info.display_mmio_offset + 0x7141c)
#define SWF04 (dev_priv->info.display_mmio_offset + 0x71420)
#define SWF05 (dev_priv->info.display_mmio_offset + 0x71424)
#define SWF06 (dev_priv->info.display_mmio_offset + 0x71428)
#define SWF10 (dev_priv->info.display_mmio_offset + 0x70410)
#define SWF11 (dev_priv->info.display_mmio_offset + 0x70414)
#define SWF14 (dev_priv->info.display_mmio_offset + 0x71420)
#define SWF30 (dev_priv->info.display_mmio_offset + 0x72414)
#define SWF31 (dev_priv->info.display_mmio_offset + 0x72418)
#define SWF32 (dev_priv->info.display_mmio_offset + 0x7241c)
/* Pipe B */
#define _PIPEBDSL (dev_priv->info->display_mmio_offset + 0x71000)
#define _PIPEBCONF (dev_priv->info->display_mmio_offset + 0x71008)
#define _PIPEBSTAT (dev_priv->info->display_mmio_offset + 0x71024)
#define _PIPEBDSL (dev_priv->info.display_mmio_offset + 0x71000)
#define _PIPEBCONF (dev_priv->info.display_mmio_offset + 0x71008)
#define _PIPEBSTAT (dev_priv->info.display_mmio_offset + 0x71024)
#define _PIPEBFRAMEHIGH 0x71040
#define _PIPEBFRAMEPIXEL 0x71044
#define _PIPEB_FRMCOUNT_GM45 (dev_priv->info->display_mmio_offset + 0x71040)
#define _PIPEB_FLIPCOUNT_GM45 (dev_priv->info->display_mmio_offset + 0x71044)
#define _PIPEB_FRMCOUNT_GM45 (dev_priv->info.display_mmio_offset + 0x71040)
#define _PIPEB_FLIPCOUNT_GM45 (dev_priv->info.display_mmio_offset + 0x71044)
/* Display B control */
#define _DSPBCNTR (dev_priv->info->display_mmio_offset + 0x71180)
#define _DSPBCNTR (dev_priv->info.display_mmio_offset + 0x71180)
#define DISPPLANE_ALPHA_TRANS_ENABLE (1<<15)
#define DISPPLANE_ALPHA_TRANS_DISABLE 0
#define DISPPLANE_SPRITE_ABOVE_DISPLAY 0
#define DISPPLANE_SPRITE_ABOVE_OVERLAY (1)
#define _DSPBADDR (dev_priv->info->display_mmio_offset + 0x71184)
#define _DSPBSTRIDE (dev_priv->info->display_mmio_offset + 0x71188)
#define _DSPBPOS (dev_priv->info->display_mmio_offset + 0x7118C)
#define _DSPBSIZE (dev_priv->info->display_mmio_offset + 0x71190)
#define _DSPBSURF (dev_priv->info->display_mmio_offset + 0x7119C)
#define _DSPBTILEOFF (dev_priv->info->display_mmio_offset + 0x711A4)
#define _DSPBOFFSET (dev_priv->info->display_mmio_offset + 0x711A4)
#define _DSPBSURFLIVE (dev_priv->info->display_mmio_offset + 0x711AC)
#define _DSPBADDR (dev_priv->info.display_mmio_offset + 0x71184)
#define _DSPBSTRIDE (dev_priv->info.display_mmio_offset + 0x71188)
#define _DSPBPOS (dev_priv->info.display_mmio_offset + 0x7118C)
#define _DSPBSIZE (dev_priv->info.display_mmio_offset + 0x71190)
#define _DSPBSURF (dev_priv->info.display_mmio_offset + 0x7119C)
#define _DSPBTILEOFF (dev_priv->info.display_mmio_offset + 0x711A4)
#define _DSPBOFFSET (dev_priv->info.display_mmio_offset + 0x711A4)
#define _DSPBSURFLIVE (dev_priv->info.display_mmio_offset + 0x711AC)
/* Sprite A control */
#define _DVSACNTR 0x72180
......@@ -5052,7 +5052,7 @@
#define GEN8_CENTROID_PIXEL_OPT_DIS (1<<8)
#define GEN8_SAMPLER_POWER_BYPASS_DIS (1<<1)
#define G4X_AUD_VID_DID (dev_priv->info->display_mmio_offset + 0x62020)
#define G4X_AUD_VID_DID (dev_priv->info.display_mmio_offset + 0x62020)
#define INTEL_AUDIO_DEVCL 0x808629FB
#define INTEL_AUDIO_DEVBLC 0x80862801
#define INTEL_AUDIO_DEVCTG 0x80862802
......@@ -5905,11 +5905,11 @@
#define READ_DATA_VALID(n) (1 << (n))
/* For UMS only (deprecated): */
#define _PALETTE_A (dev_priv->info->display_mmio_offset + 0xa000)
#define _PALETTE_B (dev_priv->info->display_mmio_offset + 0xa800)
#define _DPLL_A (dev_priv->info->display_mmio_offset + 0x6014)
#define _DPLL_B (dev_priv->info->display_mmio_offset + 0x6018)
#define _DPLL_A_MD (dev_priv->info->display_mmio_offset + 0x601c)
#define _DPLL_B_MD (dev_priv->info->display_mmio_offset + 0x6020)
#define _PALETTE_A (dev_priv->info.display_mmio_offset + 0xa000)
#define _PALETTE_B (dev_priv->info.display_mmio_offset + 0xa800)
#define _DPLL_A (dev_priv->info.display_mmio_offset + 0x6014)
#define _DPLL_B (dev_priv->info.display_mmio_offset + 0x6018)
#define _DPLL_A_MD (dev_priv->info.display_mmio_offset + 0x601c)
#define _DPLL_B_MD (dev_priv->info.display_mmio_offset + 0x6020)
#endif /* _I915_REG_H_ */
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