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Date: Mon, 11 Apr 2022 19:42:06 -0600
From: James Hilliard <james.hilliard1@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: James Hilliard <james.hilliard1@...il.com>,
Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/gma500: add comments to register definitions
Extracted from various sources such EMGD releases.
Signed-off-by: James Hilliard <james.hilliard1@...il.com>
---
drivers/gpu/drm/gma500/psb_intel_reg.h | 212 +++++++++++++------------
1 file changed, 107 insertions(+), 105 deletions(-)
diff --git a/drivers/gpu/drm/gma500/psb_intel_reg.h b/drivers/gpu/drm/gma500/psb_intel_reg.h
index ced7b433befb..a754bece30f5 100644
--- a/drivers/gpu/drm/gma500/psb_intel_reg.h
+++ b/drivers/gpu/drm/gma500/psb_intel_reg.h
@@ -31,7 +31,7 @@
# define GPIO_DATA_VAL_IN (1 << 12)
# define GPIO_DATA_PULLUP_DISABLE (1 << 13)
-#define GMBUS0 0x5100 /* clock/port select */
+#define GMBUS0 0x5100 /* clock/device select register */
#define GMBUS_RATE_100KHZ (0<<8)
#define GMBUS_RATE_50KHZ (1<<8)
#define GMBUS_RATE_400KHZ (2<<8) /* reserved on Pineview */
@@ -46,7 +46,7 @@
/* 6 reserved */
#define GMBUS_PORT_DPD 7 /* HDMID */
#define GMBUS_NUM_PORTS 8
-#define GMBUS1 0x5104 /* command/status */
+#define GMBUS1 0x5104 /* command/status register */
#define GMBUS_SW_CLR_INT (1<<31)
#define GMBUS_SW_RDY (1<<30)
#define GMBUS_ENT (1<<29) /* enable timeout */
@@ -59,7 +59,7 @@
#define GMBUS_SLAVE_ADDR_SHIFT 1
#define GMBUS_SLAVE_READ (1<<0)
#define GMBUS_SLAVE_WRITE (0<<0)
-#define GMBUS2 0x5108 /* status */
+#define GMBUS2 0x5108 /* status register */
#define GMBUS_INUSE (1<<15)
#define GMBUS_HW_WAIT_PHASE (1<<14)
#define GMBUS_STALL_TIMEOUT (1<<13)
@@ -67,18 +67,18 @@
#define GMBUS_HW_RDY (1<<11)
#define GMBUS_SATOER (1<<10)
#define GMBUS_ACTIVE (1<<9)
-#define GMBUS3 0x510c /* data buffer bytes 3-0 */
-#define GMBUS4 0x5110 /* interrupt mask (Pineview+) */
+#define GMBUS3 0x510c /* data buffer 3-0 register */
+#define GMBUS4 0x5110 /* REQUEST_INUSE register (Pineview+) */
#define GMBUS_SLAVE_TIMEOUT_EN (1<<4)
#define GMBUS_NAK_EN (1<<3)
#define GMBUS_IDLE_EN (1<<2)
#define GMBUS_HW_WAIT_EN (1<<1)
#define GMBUS_HW_RDY_EN (1<<0)
-#define GMBUS5 0x5120 /* byte index */
+#define GMBUS5 0x5120 /* 2-byte index register */
#define GMBUS_2BYTE_INDEX_EN (1<<31)
-#define BLC_PWM_CTL 0x61254
-#define BLC_PWM_CTL2 0x61250
+#define BLC_PWM_CTL 0x61254 /* Backlight PWM Control */
+#define BLC_PWM_CTL2 0x61250 /* Image BLM Histogram Control */
#define PWM_ENABLE (1 << 31)
#define PWM_LEGACY_MODE (1 << 30)
#define PWM_PIPE_B (1 << 29)
@@ -117,37 +117,38 @@
#define I855_CLOCK_166_250 (3 << 0)
/* I830 CRTC registers */
-#define HTOTAL_A 0x60000
-#define HBLANK_A 0x60004
-#define HSYNC_A 0x60008
-#define VTOTAL_A 0x6000c
-#define VBLANK_A 0x60010
-#define VSYNC_A 0x60014
-#define PIPEASRC 0x6001c
-#define BCLRPAT_A 0x60020
+#define HTOTAL_A 0x60000 /* Pipe A Horizontal Total Register */
+#define HBLANK_A 0x60004 /* Pipe A Horizontal Blank Register */
+#define HSYNC_A 0x60008 /* Pipe A Horizontal Sync Register */
+#define VTOTAL_A 0x6000c /* Pipe A Vertical Total Register */
+#define VBLANK_A 0x60010 /* Pipe A Vertical Blank Register */
+#define VSYNC_A 0x60014 /* Pipe A Vertical Sync Register */
+#define PIPEASRC 0x6001c /* Pipe A Source Image Size Register */
+#define BCLRPAT_A 0x60020 /* Pipe A Border Color Pattern Register */
#define VSYNCSHIFT_A 0x60028
-#define HTOTAL_B 0x61000
-#define HBLANK_B 0x61004
-#define HSYNC_B 0x61008
-#define VTOTAL_B 0x6100c
-#define VBLANK_B 0x61010
-#define VSYNC_B 0x61014
-#define PIPEBSRC 0x6101c
-#define BCLRPAT_B 0x61020
+#define HTOTAL_B 0x61000 /* Pipe B Horizontal Total Register */
+#define HBLANK_B 0x61004 /* Pipe B Horizontal Blank Register */
+#define HSYNC_B 0x61008 /* Pipe B Horizontal Sync Register */
+#define VTOTAL_B 0x6100c /* Pipe B Vertical Total Register */
+#define VBLANK_B 0x61010 /* Pipe B Vertical Blank Register */
+#define VSYNC_B 0x61014 /* Pipe B Vertical Sync Register */
+#define PIPEBSRC 0x6101c /* Pipe B Source Image Size Register */
+#define BCLRPAT_B 0x61020 /* Pipe B Border Color Pattern Register */
#define VSYNCSHIFT_B 0x61028
-#define HTOTAL_C 0x62000
-#define HBLANK_C 0x62004
-#define HSYNC_C 0x62008
-#define VTOTAL_C 0x6200c
-#define VBLANK_C 0x62010
-#define VSYNC_C 0x62014
-#define PIPECSRC 0x6201c
-#define BCLRPAT_C 0x62020
+#define HTOTAL_C 0x62000 /* Pipe C Horizontal Total Register */
+#define HBLANK_C 0x62004 /* Pipe C Horizontal Blank Register */
+#define HSYNC_C 0x62008 /* Pipe C Horizontal Sync Register */
+#define VTOTAL_C 0x6200c /* Pipe C Vertical Total Register */
+#define VBLANK_C 0x62010 /* Pipe C Vertical Blank Register */
+#define VSYNC_C 0x62014 /* Pipe C Vertical Sync Register */
+#define PIPECSRC 0x6201c /* Pipe C Source Image Size Register */
+#define BCLRPAT_C 0x62020 /* Pipe C Border Color Pattern Register */
#define VSYNCSHIFT_C 0x62028
-#define PP_STATUS 0x61200
+/* Panel power sequencing */
+#define PP_STATUS 0x61200 /* LVDS Panel Power Status Register */
# define PP_ON (1 << 31)
/*
* Indicates that all dependencies of the panel are on:
@@ -165,7 +166,7 @@
#define PP_SEQUENCE_STATE_ON_IDLE (1 << 3)
#define PP_SEQUENCE_STATE_MASK 0x0000000f
-#define PP_CONTROL 0x61204
+#define PP_CONTROL 0x61204 /* LVDS Panel Power Control Register */
#define POWER_TARGET_ON (1 << 0)
#define PANEL_UNLOCK_REGS (0xabcd << 16)
#define PANEL_UNLOCK_MASK (0xffff << 16)
@@ -176,9 +177,9 @@
#define PANEL_POWER_ON (1 << 0)
/* Poulsbo/Oaktrail */
-#define LVDSPP_ON 0x61208
+#define LVDSPP_ON 0x61208 /* Panel Power On Sequencing Delays */
#define LVDSPP_OFF 0x6120c
-#define PP_CYCLE 0x61210
+#define PP_CYCLE 0x61210 /* Panel Power Cycle Delay and Reference */
/* Cedartrail */
#define PP_ON_DELAYS 0x61208 /* Cedartrail */
@@ -202,7 +203,8 @@
#define PANEL_POWER_CYCLE_DELAY_MASK (0x1f)
#define PANEL_POWER_CYCLE_DELAY_SHIFT 0
-#define PFIT_CONTROL 0x61230
+/* Panel fitting */
+#define PFIT_CONTROL 0x61230 /* Panel Fitting Control */
#define PFIT_ENABLE (1 << 31)
#define PFIT_PIPE_MASK (3 << 29)
#define PFIT_PIPE_SHIFT 29
@@ -218,14 +220,14 @@
#define HORIZ_AUTO_SCALE (1 << 5)
#define PANEL_8TO6_DITHER_ENABLE (1 << 3)
-#define PFIT_PGM_RATIOS 0x61234
+#define PFIT_PGM_RATIOS 0x61234 /* Programmed Panel Fitting Ratios */
#define PFIT_VERT_SCALE_MASK 0xfff00000
#define PFIT_HORIZ_SCALE_MASK 0x0000fff0
#define PFIT_AUTO_RATIOS 0x61238
-#define DPLL_A 0x06014
-#define DPLL_B 0x06018
+#define DPLL_A 0x06014 /* Display PLL A Control */
+#define DPLL_B 0x06018 /* Display PLL B Control */
#define DPLL_VCO_ENABLE (1 << 31)
#define DPLL_DVO_HIGH_SPEED (1 << 30)
#define DPLL_SYNCLOCK_ENABLE (1 << 29)
@@ -336,7 +338,7 @@
#define DPLLA_TEST_M_BYPASS (1 << 2)
#define DPLLA_INPUT_BUFFER_ENABLE (1 << 0)
-#define ADPA 0x61100
+#define ADPA 0x61100 /* Analog Display Port A Control */
#define ADPA_DAC_ENABLE (1 << 31)
#define ADPA_DAC_DISABLE 0
#define ADPA_PIPE_SELECT_MASK (1 << 30)
@@ -353,10 +355,10 @@
#define ADPA_HSYNC_ACTIVE_HIGH (1 << 3)
#define ADPA_HSYNC_ACTIVE_LOW 0
-#define FPA0 0x06040
-#define FPA1 0x06044
-#define FPB0 0x06048
-#define FPB1 0x0604c
+#define FPA0 0x06040 /* DPLL A Divisor 0 */
+#define FPA1 0x06044 /* DPLL A Divisor 1 */
+#define FPB0 0x06048 /* DPLL B Divisor 0 */
+#define FPB1 0x0604c /* DPLL B Divisor 1 */
#define FP_N_DIV_MASK 0x003f0000
#define FP_N_DIV_SHIFT 16
#define FP_M1_DIV_MASK 0x00003f00
@@ -476,7 +478,7 @@
#define LVDS_B0B3_POWER_DOWN (0 << 2)
#define LVDS_B0B3_POWER_UP (3 << 2)
-#define PIPEACONF 0x70008
+#define PIPEACONF 0x70008 /* Pipe A Pixel Pipeline Config Reg */
#define PIPEACONF_ENABLE (1 << 31)
#define PIPEACONF_DISABLE 0
#define PIPEACONF_DOUBLE_WIDE (1 << 30)
@@ -495,7 +497,7 @@
#define PIPECONF_PLANE_OFF (1 << 19)
#define PIPECONF_CURSOR_OFF (1 << 18)
-#define PIPEBCONF 0x71008
+#define PIPEBCONF 0x71008 /* Pipe B Pixel Pipeline Config Reg */
#define PIPEBCONF_ENABLE (1 << 31)
#define PIPEBCONF_DISABLE 0
#define PIPEBCONF_DOUBLE_WIDE (1 << 30)
@@ -503,15 +505,15 @@
#define PIPEBCONF_GAMMA (1 << 24)
#define PIPEBCONF_PALETTE 0
-#define PIPECCONF 0x72008
+#define PIPECCONF 0x72008 /* Pipe C Pixel Pipeline Config Reg */
-#define PIPEBGCMAXRED 0x71010
-#define PIPEBGCMAXGREEN 0x71014
-#define PIPEBGCMAXBLUE 0x71018
+#define PIPEBGCMAXRED 0x71010 /* Pipe B Gamma Correct. Max Red */
+#define PIPEBGCMAXGREEN 0x71014 /* Pipe B Gamma Correct. Max Green */
+#define PIPEBGCMAXBLUE 0x71018 /* Pipe B Gamma Correct. Max Blue */
-#define PIPEASTAT 0x70024
-#define PIPEBSTAT 0x71024
-#define PIPECSTAT 0x72024
+#define PIPEASTAT 0x70024 /* Pipe A Display Status */
+#define PIPEBSTAT 0x71024 /* Pipe B Display Status */
+#define PIPECSTAT 0x72024 /* Pipe C Display Status */
#define PIPE_VBLANK_INTERRUPT_STATUS (1UL << 1)
#define PIPE_START_VBLANK_INTERRUPT_STATUS (1UL << 2)
#define PIPE_VBLANK_CLEAR (1 << 1)
@@ -537,8 +539,8 @@
#define PIPE_VBLANK_MASK ((1 << 25)|(1 << 24)|(1 << 18)|(1 << 17))
#define HISTOGRAM_INT_CONTROL 0x61268
#define HISTOGRAM_BIN_DATA 0X61264
-#define HISTOGRAM_LOGIC_CONTROL 0x61260
-#define PWM_CONTROL_LOGIC 0x61250
+#define HISTOGRAM_LOGIC_CONTROL 0x61260 /* Image BLM Histogram Control */
+#define PWM_CONTROL_LOGIC 0x61250 /* Backlight PWM Control 2 */
#define PIPE_HOTPLUG_INTERRUPT_STATUS (1UL << 10)
#define HISTOGRAM_INTERRUPT_ENABLE (1UL << 31)
#define HISTOGRAM_LOGIC_ENABLE (1UL << 31)
@@ -550,12 +552,12 @@
#define HISTOGRAM_INT_CTRL_CLEAR (1UL << 30)
#define DPST_YUV_LUMA_MODE 0
-#define PIPEAFRAMEHIGH 0x70040
-#define PIPEAFRAMEPIXEL 0x70044
-#define PIPEBFRAMEHIGH 0x71040
-#define PIPEBFRAMEPIXEL 0x71044
-#define PIPECFRAMEHIGH 0x72040
-#define PIPECFRAMEPIXEL 0x72044
+#define PIPEAFRAMEHIGH 0x70040 /* Pipe A Frame Count High */
+#define PIPEAFRAMEPIXEL 0x70044 /* Pipe A Frame Cnt Low and pixel cnt */
+#define PIPEBFRAMEHIGH 0x71040 /* Pipe B Frame Count High */
+#define PIPEBFRAMEPIXEL 0x71044 /* Pipe B Frame Cnt Low and pixel cnt */
+#define PIPECFRAMEHIGH 0x72040 /* Pipe C Frame Count High */
+#define PIPECFRAMEPIXEL 0x72044 /* Pipe C Frame Cnt Low and pixel cnt */
#define PIPE_FRAME_HIGH_MASK 0x0000ffff
#define PIPE_FRAME_HIGH_SHIFT 0
#define PIPE_FRAME_LOW_MASK 0xff000000
@@ -566,7 +568,7 @@
#define FW_BLC_SELF 0x20e0
#define FW_BLC_SELF_EN (1<<15)
-#define DSPARB 0x70030
+#define DSPARB 0x70030 /* Display Arbitration Control */
#define DSPFW1 0x70034
#define DSP_FIFO_SR_WM_MASK 0xFF800000
#define DSP_FIFO_SR_WM_SHIFT 23
@@ -585,10 +587,10 @@
#define CURSOR_B_FIFO_WM1_SHIFT 8
#define CURSOR_FIFO_SR_WM1_SHIFT 0
#define DSPFW6 0x70058
-#define DSPCHICKENBIT 0x70400
-#define DSPACNTR 0x70180
-#define DSPBCNTR 0x71180
-#define DSPCCNTR 0x72180
+#define DSPCHICKENBIT 0x70400 /* Chicken Bit */
+#define DSPACNTR 0x70180 /* Display Plane A */
+#define DSPBCNTR 0x71180 /* Display Plane B */
+#define DSPCCNTR 0x72180 /* Display Plane C */
#define DISPLAY_PLANE_ENABLE (1 << 31)
#define DISPLAY_PLANE_DISABLE 0
#define DISPPLANE_GAMMA_ENABLE (1 << 30)
@@ -618,42 +620,42 @@
#define DISPPLANE_SPRITE_ABOVE_OVERLAY (1)
#define DISPPLANE_BOTTOM (4)
-#define DSPABASE 0x70184
+#define DSPABASE 0x70184 /* Display A Start Address */
#define DSPALINOFF 0x70184
-#define DSPASTRIDE 0x70188
+#define DSPASTRIDE 0x70188 /* Display A Stride */
-#define DSPBBASE 0x71184
+#define DSPBBASE 0x71184 /* Display B Start Address */
#define DSPBLINOFF 0X71184
#define DSPBADDR DSPBBASE
-#define DSPBSTRIDE 0x71188
+#define DSPBSTRIDE 0x71188 /* Display B Stride */
-#define DSPCBASE 0x72184
+#define DSPCBASE 0x72184 /* Display C Start Address */
#define DSPCLINOFF 0x72184
-#define DSPCSTRIDE 0x72188
+#define DSPCSTRIDE 0x72188 /* Display C Stride */
-#define DSPAKEYVAL 0x70194
-#define DSPAKEYMASK 0x70198
+#define DSPAKEYVAL 0x70194 /* Sprite color key value */
+#define DSPAKEYMASK 0x70198 /* Sprite color key mask */
-#define DSPAPOS 0x7018C /* reserved */
-#define DSPASIZE 0x70190
-#define DSPBPOS 0x7118C
-#define DSPBSIZE 0x71190
-#define DSPCPOS 0x7218C
-#define DSPCSIZE 0x72190
+#define DSPAPOS 0x7018C /* Display A Position */
+#define DSPASIZE 0x70190 /* Display A Size */
+#define DSPBPOS 0x7118C /* Display B Position */
+#define DSPBSIZE 0x71190 /* Display B Size */
+#define DSPCPOS 0x7218C /* Display C Position */
+#define DSPCSIZE 0x72190 /* Display C Size */
-#define DSPASURF 0x7019C
-#define DSPATILEOFF 0x701A4
+#define DSPASURF 0x7019C /* Display A Suface base address */
+#define DSPATILEOFF 0x701A4 /* Display A Tiled Offset */
-#define DSPBSURF 0x7119C
-#define DSPBTILEOFF 0x711A4
+#define DSPBSURF 0x7119C /* Display B Suface base address */
+#define DSPBTILEOFF 0x711A4 /* Display B Tiled Offset */
-#define DSPCSURF 0x7219C
-#define DSPCTILEOFF 0x721A4
-#define DSPCKEYMAXVAL 0x721A0
-#define DSPCKEYMINVAL 0x72194
-#define DSPCKEYMSK 0x72198
+#define DSPCSURF 0x7219C /* Display C Suface base address */
+#define DSPCTILEOFF 0x721A4 /* Display C Tiled Offset */
+#define DSPCKEYMAXVAL 0x721A0 /* Display C Sprint color key Max */
+#define DSPCKEYMINVAL 0x72194 /* Sprite color key Min */
+#define DSPCKEYMSK 0x72198 /* Sprite color key mask */
-#define VGACNTRL 0x71400
+#define VGACNTRL 0x71400 /* VGA Display Plane Control Register */
#define VGA_DISP_DISABLE (1 << 31)
#define VGA_2X_MODE (1 << 30)
#define VGA_PIPE_B_SELECT (1 << 29)
@@ -662,7 +664,7 @@
* Overlay registers
*/
#define OV_C_OFFSET 0x08000
-#define OV_OVADD 0x30000
+#define OV_OVADD 0x30000 /* Overlay Control */
#define OV_DOVASTA 0x30008
# define OV_PIPE_SELECT ((1 << 6)|(1 << 7))
# define OV_PIPE_SELECT_POS 6
@@ -687,7 +689,7 @@
* Some BIOS scratch area registers. The 845 (and 830?) store the amount
* of video memory available to the BIOS in SWF1.
*/
-#define SWF0 0x71410
+#define SWF0 0x71410 /* Software flags B Base Addr */
#define SWF1 0x71414
#define SWF2 0x71418
#define SWF3 0x7141c
@@ -698,7 +700,7 @@
/*
* 855 scratch registers.
*/
-#define SWF00 0x70410
+#define SWF00 0x70410 /* Software flags A Base Addr */
#define SWF01 0x70414
#define SWF02 0x70418
#define SWF03 0x7041c
@@ -748,18 +750,18 @@
/*
* Interrupt Registers
*/
-#define IER 0x020a0
-#define IIR 0x020a4
-#define IMR 0x020a8
-#define ISR 0x020ac
+#define IER 0x020a0 /* Interrupt Enable */
+#define IIR 0x020a4 /* Interrupt Identity */
+#define IMR 0x020a8 /* Interrupt Mask */
+#define ISR 0x020ac /* Interrupt Status */
/*
* MOORESTOWN delta registers
*/
-#define MRST_DPLL_A 0x0f014
+#define MRST_DPLL_A 0x0f014 /* Display PLL A Control */
#define DPLLA_MODE_LVDS (2 << 26) /* mrst */
-#define MRST_FPA0 0x0f040
-#define MRST_FPA1 0x0f044
+#define MRST_FPA0 0x0f040 /* DPLL A Divisor 0 */
+#define MRST_FPA1 0x0f044 /* DPLL A Divisor 1 */
#define MRST_PERF_MODE 0x020f4
/*
@@ -806,8 +808,8 @@
#define PIPEACONF_PIPE_STATE (1 << 30)
/* #define DSPACNTR 0x70180 */
-#define MRST_DSPABASE 0x7019c
-#define MRST_DSPBBASE 0x7119c
+#define MRST_DSPABASE 0x7019c /* Display A Suface base address */
+#define MRST_DSPBBASE 0x7119c /* Display B Suface base address */
/*
* Moorestown registers.
@@ -1396,14 +1398,14 @@ No status bits are changed.
* is 20 bytes in each direction, hence the 5 fixed
* data registers
*/
-#define DPB_AUX_CH_CTL 0x64110
+#define DPB_AUX_CH_CTL 0x64110 /* Display Port B AUX Channel Control */
#define DPB_AUX_CH_DATA1 0x64114
#define DPB_AUX_CH_DATA2 0x64118
#define DPB_AUX_CH_DATA3 0x6411c
#define DPB_AUX_CH_DATA4 0x64120
#define DPB_AUX_CH_DATA5 0x64124
-#define DPC_AUX_CH_CTL 0x64210
+#define DPC_AUX_CH_CTL 0x64210 /* Display Port C AUX Channel Control */
#define DPC_AUX_CH_DATA1 0x64214
#define DPC_AUX_CH_DATA2 0x64218
#define DPC_AUX_CH_DATA3 0x6421c
--
2.25.1
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