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authorJesse Barnes <jbarnes@virtuousgeek.org>2008-11-07 14:24:08 -0800
committerDave Airlie <airlied@linux.ie>2008-12-29 17:47:23 +1000
commit79e539453b34e35f39299a899d263b0a1f1670bd (patch)
tree6d1285f2b78fab399aab75a3557b7d6bc0dbd112 /drivers/gpu/drm/i915/intel_sdvo_regs.h
parentf453ba0460742ad027ae0c4c7d61e62817b3e7ef (diff)
downloadlinaro-lsk-79e539453b34e35f39299a899d263b0a1f1670bd.tar.gz
DRM: i915: add mode setting support
This commit adds i915 driver support for the DRM mode setting APIs. Currently, VGA, LVDS, SDVO DVI & VGA, TV and DVO LVDS outputs are supported. HDMI, DisplayPort and additional SDVO output support will follow. Support for the mode setting code is controlled by the new 'modeset' module option. A new config option, CONFIG_DRM_I915_KMS controls the default behavior, and whether a PCI ID list is built into the module for use by user level module utilities. Note that if mode setting is enabled, user level drivers that access display registers directly or that don't use the kernel graphics memory manager will likely corrupt kernel graphics memory, disrupt output configuration (possibly leading to hangs and/or blank displays), and prevent panic/oops messages from appearing. So use caution when enabling this code; be sure your user level code supports the new interfaces. A new SysRq key, 'g', provides emergency support for switching back to the kernel's framebuffer console; which is useful for testing. Co-authors: Dave Airlie <airlied@linux.ie>, Hong Liu <hong.liu@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo_regs.h')
-rw-r--r--drivers/gpu/drm/i915/intel_sdvo_regs.h327
1 files changed, 327 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo_regs.h b/drivers/gpu/drm/i915/intel_sdvo_regs.h
new file mode 100644
index 00000000000..861a43f8693
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_sdvo_regs.h
@@ -0,0 +1,327 @@
+/*
+ * Copyright 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Eric Anholt <eric@anholt.net>
+ */
+
+/**
+ * @file SDVO command definitions and structures.
+ */
+
+#define SDVO_OUTPUT_FIRST (0)
+#define SDVO_OUTPUT_TMDS0 (1 << 0)
+#define SDVO_OUTPUT_RGB0 (1 << 1)
+#define SDVO_OUTPUT_CVBS0 (1 << 2)
+#define SDVO_OUTPUT_SVID0 (1 << 3)
+#define SDVO_OUTPUT_YPRPB0 (1 << 4)
+#define SDVO_OUTPUT_SCART0 (1 << 5)
+#define SDVO_OUTPUT_LVDS0 (1 << 6)
+#define SDVO_OUTPUT_TMDS1 (1 << 8)
+#define SDVO_OUTPUT_RGB1 (1 << 9)
+#define SDVO_OUTPUT_CVBS1 (1 << 10)
+#define SDVO_OUTPUT_SVID1 (1 << 11)
+#define SDVO_OUTPUT_YPRPB1 (1 << 12)
+#define SDVO_OUTPUT_SCART1 (1 << 13)
+#define SDVO_OUTPUT_LVDS1 (1 << 14)
+#define SDVO_OUTPUT_LAST (14)
+
+struct intel_sdvo_caps {
+ u8 vendor_id;
+ u8 device_id;
+ u8 device_rev_id;
+ u8 sdvo_version_major;
+ u8 sdvo_version_minor;
+ unsigned int sdvo_inputs_mask:2;
+ unsigned int smooth_scaling:1;
+ unsigned int sharp_scaling:1;
+ unsigned int up_scaling:1;
+ unsigned int down_scaling:1;
+ unsigned int stall_support:1;
+ unsigned int pad:1;
+ u16 output_flags;
+} __attribute__((packed));
+
+/** This matches the EDID DTD structure, more or less */
+struct intel_sdvo_dtd {
+ struct {
+ u16 clock; /**< pixel clock, in 10kHz units */
+ u8 h_active; /**< lower 8 bits (pixels) */
+ u8 h_blank; /**< lower 8 bits (pixels) */
+ u8 h_high; /**< upper 4 bits each h_active, h_blank */
+ u8 v_active; /**< lower 8 bits (lines) */
+ u8 v_blank; /**< lower 8 bits (lines) */
+ u8 v_high; /**< upper 4 bits each v_active, v_blank */
+ } part1;
+
+ struct {
+ u8 h_sync_off; /**< lower 8 bits, from hblank start */
+ u8 h_sync_width; /**< lower 8 bits (pixels) */
+ /** lower 4 bits each vsync offset, vsync width */
+ u8 v_sync_off_width;
+ /**
+ * 2 high bits of hsync offset, 2 high bits of hsync width,
+ * bits 4-5 of vsync offset, and 2 high bits of vsync width.
+ */
+ u8 sync_off_width_high;
+ u8 dtd_flags;
+ u8 sdvo_flags;
+ /** bits 6-7 of vsync offset at bits 6-7 */
+ u8 v_sync_off_high;
+ u8 reserved;
+ } part2;
+} __attribute__((packed));
+
+struct intel_sdvo_pixel_clock_range {
+ u16 min; /**< pixel clock, in 10kHz units */
+ u16 max; /**< pixel clock, in 10kHz units */
+} __attribute__((packed));
+
+struct intel_sdvo_preferred_input_timing_args {
+ u16 clock;
+ u16 width;
+ u16 height;
+} __attribute__((packed));
+
+/* I2C registers for SDVO */
+#define SDVO_I2C_ARG_0 0x07
+#define SDVO_I2C_ARG_1 0x06
+#define SDVO_I2C_ARG_2 0x05
+#define SDVO_I2C_ARG_3 0x04
+#define SDVO_I2C_ARG_4 0x03
+#define SDVO_I2C_ARG_5 0x02
+#define SDVO_I2C_ARG_6 0x01
+#define SDVO_I2C_ARG_7 0x00
+#define SDVO_I2C_OPCODE 0x08
+#define SDVO_I2C_CMD_STATUS 0x09
+#define SDVO_I2C_RETURN_0 0x0a
+#define SDVO_I2C_RETURN_1 0x0b
+#define SDVO_I2C_RETURN_2 0x0c
+#define SDVO_I2C_RETURN_3 0x0d
+#define SDVO_I2C_RETURN_4 0x0e
+#define SDVO_I2C_RETURN_5 0x0f
+#define SDVO_I2C_RETURN_6 0x10
+#define SDVO_I2C_RETURN_7 0x11
+#define SDVO_I2C_VENDOR_BEGIN 0x20
+
+/* Status results */
+#define SDVO_CMD_STATUS_POWER_ON 0x0
+#define SDVO_CMD_STATUS_SUCCESS 0x1
+#define SDVO_CMD_STATUS_NOTSUPP 0x2
+#define SDVO_CMD_STATUS_INVALID_ARG 0x3
+#define SDVO_CMD_STATUS_PENDING 0x4
+#define SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED 0x5
+#define SDVO_CMD_STATUS_SCALING_NOT_SUPP 0x6
+
+/* SDVO commands, argument/result registers */
+
+#define SDVO_CMD_RESET 0x01
+
+/** Returns a struct intel_sdvo_caps */
+#define SDVO_CMD_GET_DEVICE_CAPS 0x02
+
+#define SDVO_CMD_GET_FIRMWARE_REV 0x86
+# define SDVO_DEVICE_FIRMWARE_MINOR SDVO_I2C_RETURN_0
+# define SDVO_DEVICE_FIRMWARE_MAJOR SDVO_I2C_RETURN_1
+# define SDVO_DEVICE_FIRMWARE_PATCH SDVO_I2C_RETURN_2
+
+/**
+ * Reports which inputs are trained (managed to sync).
+ *
+ * Devices must have trained within 2 vsyncs of a mode change.
+ */
+#define SDVO_CMD_GET_TRAINED_INPUTS 0x03
+struct intel_sdvo_get_trained_inputs_response {
+ unsigned int input0_trained:1;
+ unsigned int input1_trained:1;
+ unsigned int pad:6;
+} __attribute__((packed));
+
+/** Returns a struct intel_sdvo_output_flags of active outputs. */
+#define SDVO_CMD_GET_ACTIVE_OUTPUTS 0x04
+
+/**
+ * Sets the current set of active outputs.
+ *
+ * Takes a struct intel_sdvo_output_flags. Must be preceded by a SET_IN_OUT_MAP
+ * on multi-output devices.
+ */
+#define SDVO_CMD_SET_ACTIVE_OUTPUTS 0x05
+
+/**
+ * Returns the current mapping of SDVO inputs to outputs on the device.
+ *
+ * Returns two struct intel_sdvo_output_flags structures.
+ */
+#define SDVO_CMD_GET_IN_OUT_MAP 0x06
+
+/**
+ * Sets the current mapping of SDVO inputs to outputs on the device.
+ *
+ * Takes two struct i380_sdvo_output_flags structures.
+ */
+#define SDVO_CMD_SET_IN_OUT_MAP 0x07
+
+/**
+ * Returns a struct intel_sdvo_output_flags of attached displays.
+ */
+#define SDVO_CMD_GET_ATTACHED_DISPLAYS 0x0b
+
+/**
+ * Returns a struct intel_sdvo_ouptut_flags of displays supporting hot plugging.
+ */
+#define SDVO_CMD_GET_HOT_PLUG_SUPPORT 0x0c
+
+/**
+ * Takes a struct intel_sdvo_output_flags.
+ */
+#define SDVO_CMD_SET_ACTIVE_HOT_PLUG 0x0d
+
+/**
+ * Returns a struct intel_sdvo_output_flags of displays with hot plug
+ * interrupts enabled.
+ */
+#define SDVO_CMD_GET_ACTIVE_HOT_PLUG 0x0e
+
+#define SDVO_CMD_GET_INTERRUPT_EVENT_SOURCE 0x0f
+struct intel_sdvo_get_interrupt_event_source_response {
+ u16 interrupt_status;
+ unsigned int ambient_light_interrupt:1;
+ unsigned int pad:7;
+} __attribute__((packed));
+
+/**
+ * Selects which input is affected by future input commands.
+ *
+ * Commands affected include SET_INPUT_TIMINGS_PART[12],
+ * GET_INPUT_TIMINGS_PART[12], GET_PREFERRED_INPUT_TIMINGS_PART[12],
+ * GET_INPUT_PIXEL_CLOCK_RANGE, and CREATE_PREFERRED_INPUT_TIMINGS.
+ */
+#define SDVO_CMD_SET_TARGET_INPUT 0x10
+struct intel_sdvo_set_target_input_args {
+ unsigned int target_1:1;
+ unsigned int pad:7;
+} __attribute__((packed));
+
+/**
+ * Takes a struct intel_sdvo_output_flags of which outputs are targetted by
+ * future output commands.
+ *
+ * Affected commands inclue SET_OUTPUT_TIMINGS_PART[12],
+ * GET_OUTPUT_TIMINGS_PART[12], and GET_OUTPUT_PIXEL_CLOCK_RANGE.
+ */
+#define SDVO_CMD_SET_TARGET_OUTPUT 0x11
+
+#define SDVO_CMD_GET_INPUT_TIMINGS_PART1 0x12
+#define SDVO_CMD_GET_INPUT_TIMINGS_PART2 0x13
+#define SDVO_CMD_SET_INPUT_TIMINGS_PART1 0x14
+#define SDVO_CMD_SET_INPUT_TIMINGS_PART2 0x15
+#define SDVO_CMD_SET_OUTPUT_TIMINGS_PART1 0x16
+#define SDVO_CMD_SET_OUTPUT_TIMINGS_PART2 0x17
+#define SDVO_CMD_GET_OUTPUT_TIMINGS_PART1 0x18
+#define SDVO_CMD_GET_OUTPUT_TIMINGS_PART2 0x19
+/* Part 1 */
+# define SDVO_DTD_CLOCK_LOW SDVO_I2C_ARG_0
+# define SDVO_DTD_CLOCK_HIGH SDVO_I2C_ARG_1
+# define SDVO_DTD_H_ACTIVE SDVO_I2C_ARG_2
+# define SDVO_DTD_H_BLANK SDVO_I2C_ARG_3
+# define SDVO_DTD_H_HIGH SDVO_I2C_ARG_4
+# define SDVO_DTD_V_ACTIVE SDVO_I2C_ARG_5
+# define SDVO_DTD_V_BLANK SDVO_I2C_ARG_6
+# define SDVO_DTD_V_HIGH SDVO_I2C_ARG_7
+/* Part 2 */
+# define SDVO_DTD_HSYNC_OFF SDVO_I2C_ARG_0
+# define SDVO_DTD_HSYNC_WIDTH SDVO_I2C_ARG_1
+# define SDVO_DTD_VSYNC_OFF_WIDTH SDVO_I2C_ARG_2
+# define SDVO_DTD_SYNC_OFF_WIDTH_HIGH SDVO_I2C_ARG_3
+# define SDVO_DTD_DTD_FLAGS SDVO_I2C_ARG_4
+# define SDVO_DTD_DTD_FLAG_INTERLACED (1 << 7)
+# define SDVO_DTD_DTD_FLAG_STEREO_MASK (3 << 5)
+# define SDVO_DTD_DTD_FLAG_INPUT_MASK (3 << 3)
+# define SDVO_DTD_DTD_FLAG_SYNC_MASK (3 << 1)
+# define SDVO_DTD_SDVO_FLAS SDVO_I2C_ARG_5
+# define SDVO_DTD_SDVO_FLAG_STALL (1 << 7)
+# define SDVO_DTD_SDVO_FLAG_CENTERED (0 << 6)
+# define SDVO_DTD_SDVO_FLAG_UPPER_LEFT (1 << 6)
+# define SDVO_DTD_SDVO_FLAG_SCALING_MASK (3 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_NONE (0 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_SHARP (1 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_SMOOTH (2 << 4)
+# define SDVO_DTD_VSYNC_OFF_HIGH SDVO_I2C_ARG_6
+
+/**
+ * Generates a DTD based on the given width, height, and flags.
+ *
+ * This will be supported by any device supporting scaling or interlaced
+ * modes.
+ */
+#define SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING 0x1a
+# define SDVO_PREFERRED_INPUT_TIMING_CLOCK_LOW SDVO_I2C_ARG_0
+# define SDVO_PREFERRED_INPUT_TIMING_CLOCK_HIGH SDVO_I2C_ARG_1
+# define SDVO_PREFERRED_INPUT_TIMING_WIDTH_LOW SDVO_I2C_ARG_2
+# define SDVO_PREFERRED_INPUT_TIMING_WIDTH_HIGH SDVO_I2C_ARG_3
+# define SDVO_PREFERRED_INPUT_TIMING_HEIGHT_LOW SDVO_I2C_ARG_4
+# define SDVO_PREFERRED_INPUT_TIMING_HEIGHT_HIGH SDVO_I2C_ARG_5
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS SDVO_I2C_ARG_6
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS_INTERLACED (1 << 0)
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS_SCALED (1 << 1)
+
+#define SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1 0x1b
+#define SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2 0x1c
+
+/** Returns a struct intel_sdvo_pixel_clock_range */
+#define SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE 0x1d
+/** Returns a struct intel_sdvo_pixel_clock_range */
+#define SDVO_CMD_GET_OUTPUT_PIXEL_CLOCK_RANGE 0x1e
+
+/** Returns a byte bitfield containing SDVO_CLOCK_RATE_MULT_* flags */
+#define SDVO_CMD_GET_SUPPORTED_CLOCK_RATE_MULTS 0x1f
+
+/** Returns a byte containing a SDVO_CLOCK_RATE_MULT_* flag */
+#define SDVO_CMD_GET_CLOCK_RATE_MULT 0x20
+/** Takes a byte containing a SDVO_CLOCK_RATE_MULT_* flag */
+#define SDVO_CMD_SET_CLOCK_RATE_MULT 0x21
+# define SDVO_CLOCK_RATE_MULT_1X (1 << 0)
+# define SDVO_CLOCK_RATE_MULT_2X (1 << 1)
+# define SDVO_CLOCK_RATE_MULT_4X (1 << 3)
+
+#define SDVO_CMD_GET_SUPPORTED_TV_FORMATS 0x27
+
+#define SDVO_CMD_GET_TV_FORMAT 0x28
+
+#define SDVO_CMD_SET_TV_FORMAT 0x29
+
+#define SDVO_CMD_GET_SUPPORTED_POWER_STATES 0x2a
+#define SDVO_CMD_GET_ENCODER_POWER_STATE 0x2b
+#define SDVO_CMD_SET_ENCODER_POWER_STATE 0x2c
+# define SDVO_ENCODER_STATE_ON (1 << 0)
+# define SDVO_ENCODER_STATE_STANDBY (1 << 1)
+# define SDVO_ENCODER_STATE_SUSPEND (1 << 2)
+# define SDVO_ENCODER_STATE_OFF (1 << 3)
+
+#define SDVO_CMD_SET_TV_RESOLUTION_SUPPORT 0x93
+
+#define SDVO_CMD_SET_CONTROL_BUS_SWITCH 0x7a
+# define SDVO_CONTROL_BUS_PROM 0x0
+# define SDVO_CONTROL_BUS_DDC1 0x1
+# define SDVO_CONTROL_BUS_DDC2 0x2
+# define SDVO_CONTROL_BUS_DDC3 0x3