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-rw-r--r--drivers/gpu/drm/i915/Makefile1
-rw-r--r--drivers/gpu/drm/i915/i915_drv.c1
-rw-r--r--drivers/gpu/drm/i915/intel_display.c2
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c72
-rw-r--r--drivers/gpu/drm/i915/intel_dp.h144
-rw-r--r--drivers/gpu/drm/i915/intel_dp_i2c.c273
6 files changed, 68 insertions, 425 deletions
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index fa7b9be096b..e3d049229cd 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -15,7 +15,6 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
intel_lvds.o \
intel_bios.o \
intel_dp.o \
- intel_dp_i2c.o \
intel_hdmi.o \
intel_sdvo.o \
intel_modes.o \
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 7f436ec075f..2fa21786205 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -333,6 +333,7 @@ static struct drm_driver driver = {
.mmap = drm_gem_mmap,
.poll = drm_poll,
.fasync = drm_fasync,
+ .read = drm_read,
#ifdef CONFIG_COMPAT
.compat_ioctl = i915_compat_ioctl,
#endif
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 099f420de57..897230832c8 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -32,7 +32,7 @@
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
-#include "intel_dp.h"
+#include "drm_dp_helper.h"
#include "drm_crtc_helper.h"
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d83447557f9..63424d5db9c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -33,7 +33,7 @@
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
-#include "intel_dp.h"
+#include "drm_dp_helper.h"
#define DP_LINK_STATUS_SIZE 6
#define DP_LINK_CHECK_TIMEOUT (10 * 1000)
@@ -382,17 +382,77 @@ intel_dp_aux_native_read(struct intel_output *intel_output,
}
static int
-intel_dp_i2c_aux_ch(struct i2c_adapter *adapter,
- uint8_t *send, int send_bytes,
- uint8_t *recv, int recv_bytes)
+intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
+ uint8_t write_byte, uint8_t *read_byte)
{
+ struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
struct intel_dp_priv *dp_priv = container_of(adapter,
struct intel_dp_priv,
adapter);
struct intel_output *intel_output = dp_priv->intel_output;
+ uint16_t address = algo_data->address;
+ uint8_t msg[5];
+ uint8_t reply[2];
+ int msg_bytes;
+ int reply_bytes;
+ int ret;
+
+ /* Set up the command byte */
+ if (mode & MODE_I2C_READ)
+ msg[0] = AUX_I2C_READ << 4;
+ else
+ msg[0] = AUX_I2C_WRITE << 4;
+
+ if (!(mode & MODE_I2C_STOP))
+ msg[0] |= AUX_I2C_MOT << 4;
+
+ msg[1] = address >> 8;
+ msg[2] = address;
+
+ switch (mode) {
+ case MODE_I2C_WRITE:
+ msg[3] = 0;
+ msg[4] = write_byte;
+ msg_bytes = 5;
+ reply_bytes = 1;
+ break;
+ case MODE_I2C_READ:
+ msg[3] = 0;
+ msg_bytes = 4;
+ reply_bytes = 2;
+ break;
+ default:
+ msg_bytes = 3;
+ reply_bytes = 1;
+ break;
+ }
- return intel_dp_aux_ch(intel_output,
- send, send_bytes, recv, recv_bytes);
+ for (;;) {
+ ret = intel_dp_aux_ch(intel_output,
+ msg, msg_bytes,
+ reply, reply_bytes);
+ if (ret < 0) {
+ DRM_DEBUG("aux_ch failed %d\n", ret);
+ return ret;
+ }
+ switch (reply[0] & AUX_I2C_REPLY_MASK) {
+ case AUX_I2C_REPLY_ACK:
+ if (mode == MODE_I2C_READ) {
+ *read_byte = reply[1];
+ }
+ return reply_bytes - 1;
+ case AUX_I2C_REPLY_NACK:
+ DRM_DEBUG("aux_ch nack\n");
+ return -EREMOTEIO;
+ case AUX_I2C_REPLY_DEFER:
+ DRM_DEBUG("aux_ch defer\n");
+ udelay(100);
+ break;
+ default:
+ DRM_ERROR("aux_ch invalid reply 0x%02x\n", reply[0]);
+ return -EREMOTEIO;
+ }
+ }
}
static int
diff --git a/drivers/gpu/drm/i915/intel_dp.h b/drivers/gpu/drm/i915/intel_dp.h
deleted file mode 100644
index 2b38054d3b6..00000000000
--- a/drivers/gpu/drm/i915/intel_dp.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright © 2008 Keith Packard
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. The copyright holders make no representations
- * about the suitability of this software for any purpose. It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#ifndef _INTEL_DP_H_
-#define _INTEL_DP_H_
-
-/* From the VESA DisplayPort spec */
-
-#define AUX_NATIVE_WRITE 0x8
-#define AUX_NATIVE_READ 0x9
-#define AUX_I2C_WRITE 0x0
-#define AUX_I2C_READ 0x1
-#define AUX_I2C_STATUS 0x2
-#define AUX_I2C_MOT 0x4
-
-#define AUX_NATIVE_REPLY_ACK (0x0 << 4)
-#define AUX_NATIVE_REPLY_NACK (0x1 << 4)
-#define AUX_NATIVE_REPLY_DEFER (0x2 << 4)
-#define AUX_NATIVE_REPLY_MASK (0x3 << 4)
-
-#define AUX_I2C_REPLY_ACK (0x0 << 6)
-#define AUX_I2C_REPLY_NACK (0x1 << 6)
-#define AUX_I2C_REPLY_DEFER (0x2 << 6)
-#define AUX_I2C_REPLY_MASK (0x3 << 6)
-
-/* AUX CH addresses */
-#define DP_LINK_BW_SET 0x100
-# define DP_LINK_BW_1_62 0x06
-# define DP_LINK_BW_2_7 0x0a
-
-#define DP_LANE_COUNT_SET 0x101
-# define DP_LANE_COUNT_MASK 0x0f
-# define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7)
-
-#define DP_TRAINING_PATTERN_SET 0x102
-
-# define DP_TRAINING_PATTERN_DISABLE 0
-# define DP_TRAINING_PATTERN_1 1
-# define DP_TRAINING_PATTERN_2 2
-# define DP_TRAINING_PATTERN_MASK 0x3
-
-# define DP_LINK_QUAL_PATTERN_DISABLE (0 << 2)
-# define DP_LINK_QUAL_PATTERN_D10_2 (1 << 2)
-# define DP_LINK_QUAL_PATTERN_ERROR_RATE (2 << 2)
-# define DP_LINK_QUAL_PATTERN_PRBS7 (3 << 2)
-# define DP_LINK_QUAL_PATTERN_MASK (3 << 2)
-
-# define DP_RECOVERED_CLOCK_OUT_EN (1 << 4)
-# define DP_LINK_SCRAMBLING_DISABLE (1 << 5)
-
-# define DP_SYMBOL_ERROR_COUNT_BOTH (0 << 6)
-# define DP_SYMBOL_ERROR_COUNT_DISPARITY (1 << 6)
-# define DP_SYMBOL_ERROR_COUNT_SYMBOL (2 << 6)
-# define DP_SYMBOL_ERROR_COUNT_MASK (3 << 6)
-
-#define DP_TRAINING_LANE0_SET 0x103
-#define DP_TRAINING_LANE1_SET 0x104
-#define DP_TRAINING_LANE2_SET 0x105
-#define DP_TRAINING_LANE3_SET 0x106
-
-# define DP_TRAIN_VOLTAGE_SWING_MASK 0x3
-# define DP_TRAIN_VOLTAGE_SWING_SHIFT 0
-# define DP_TRAIN_MAX_SWING_REACHED (1 << 2)
-# define DP_TRAIN_VOLTAGE_SWING_400 (0 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_600 (1 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_800 (2 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_1200 (3 << 0)
-
-# define DP_TRAIN_PRE_EMPHASIS_MASK (3 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_0 (0 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_3_5 (1 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_6 (2 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_9_5 (3 << 3)
-
-# define DP_TRAIN_PRE_EMPHASIS_SHIFT 3
-# define DP_TRAIN_MAX_PRE_EMPHASIS_REACHED (1 << 5)
-
-#define DP_DOWNSPREAD_CTRL 0x107
-# define DP_SPREAD_AMP_0_5 (1 << 4)
-
-#define DP_MAIN_LINK_CHANNEL_CODING_SET 0x108
-# define DP_SET_ANSI_8B10B (1 << 0)
-
-#define DP_LANE0_1_STATUS 0x202
-#define DP_LANE2_3_STATUS 0x203
-
-# define DP_LANE_CR_DONE (1 << 0)
-# define DP_LANE_CHANNEL_EQ_DONE (1 << 1)
-# define DP_LANE_SYMBOL_LOCKED (1 << 2)
-
-#define DP_LANE_ALIGN_STATUS_UPDATED 0x204
-
-#define DP_INTERLANE_ALIGN_DONE (1 << 0)
-#define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6)
-#define DP_LINK_STATUS_UPDATED (1 << 7)
-
-#define DP_SINK_STATUS 0x205
-
-#define DP_RECEIVE_PORT_0_STATUS (1 << 0)
-#define DP_RECEIVE_PORT_1_STATUS (1 << 1)
-
-#define DP_ADJUST_REQUEST_LANE0_1 0x206
-#define DP_ADJUST_REQUEST_LANE2_3 0x207
-
-#define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03
-#define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0
-#define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c
-#define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2
-#define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30
-#define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4
-#define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0
-#define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6
-
-struct i2c_algo_dp_aux_data {
- bool running;
- u16 address;
- int (*aux_ch) (struct i2c_adapter *adapter,
- uint8_t *send, int send_bytes,
- uint8_t *recv, int recv_bytes);
-};
-
-int
-i2c_dp_aux_add_bus(struct i2c_adapter *adapter);
-
-#endif /* _INTEL_DP_H_ */
diff --git a/drivers/gpu/drm/i915/intel_dp_i2c.c b/drivers/gpu/drm/i915/intel_dp_i2c.c
deleted file mode 100644
index a63b6f57d2d..00000000000
--- a/drivers/gpu/drm/i915/intel_dp_i2c.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Copyright © 2009 Keith Packard
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. The copyright holders make no representations
- * about the suitability of this software for any purpose. It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/i2c.h>
-#include "intel_dp.h"
-#include "drmP.h"
-
-/* Run a single AUX_CH I2C transaction, writing/reading data as necessary */
-
-#define MODE_I2C_START 1
-#define MODE_I2C_WRITE 2
-#define MODE_I2C_READ 4
-#define MODE_I2C_STOP 8
-
-static int
-i2c_algo_dp_aux_transaction(struct i2c_adapter *adapter, int mode,
- uint8_t write_byte, uint8_t *read_byte)
-{
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
- uint16_t address = algo_data->address;
- uint8_t msg[5];
- uint8_t reply[2];
- int msg_bytes;
- int reply_bytes;
- int ret;
-
- /* Set up the command byte */
- if (mode & MODE_I2C_READ)
- msg[0] = AUX_I2C_READ << 4;
- else
- msg[0] = AUX_I2C_WRITE << 4;
-
- if (!(mode & MODE_I2C_STOP))
- msg[0] |= AUX_I2C_MOT << 4;
-
- msg[1] = address >> 8;
- msg[2] = address;
-
- switch (mode) {
- case MODE_I2C_WRITE:
- msg[3] = 0;
- msg[4] = write_byte;
- msg_bytes = 5;
- reply_bytes = 1;
- break;
- case MODE_I2C_READ:
- msg[3] = 0;
- msg_bytes = 4;
- reply_bytes = 2;
- break;
- default:
- msg_bytes = 3;
- reply_bytes = 1;
- break;
- }
-
- for (;;) {
- ret = (*algo_data->aux_ch)(adapter,
- msg, msg_bytes,
- reply, reply_bytes);
- if (ret < 0) {
- DRM_DEBUG("aux_ch failed %d\n", ret);
- return ret;
- }
- switch (reply[0] & AUX_I2C_REPLY_MASK) {
- case AUX_I2C_REPLY_ACK:
- if (mode == MODE_I2C_READ) {
- *read_byte = reply[1];
- }
- return reply_bytes - 1;
- case AUX_I2C_REPLY_NACK:
- DRM_DEBUG("aux_ch nack\n");
- return -EREMOTEIO;
- case AUX_I2C_REPLY_DEFER:
- DRM_DEBUG("aux_ch defer\n");
- udelay(100);
- break;
- default:
- DRM_ERROR("aux_ch invalid reply 0x%02x\n", reply[0]);
- return -EREMOTEIO;
- }
- }
-}
-
-/*
- * I2C over AUX CH
- */
-
-/*
- * Send the address. If the I2C link is running, this 'restarts'
- * the connection with the new address, this is used for doing
- * a write followed by a read (as needed for DDC)
- */
-static int
-i2c_algo_dp_aux_address(struct i2c_adapter *adapter, u16 address, bool reading)
-{
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
- int mode = MODE_I2C_START;
- int ret;
-
- if (reading)
- mode |= MODE_I2C_READ;
- else
- mode |= MODE_I2C_WRITE;
- algo_data->address = address;
- algo_data->running = true;
- ret = i2c_algo_dp_aux_transaction(adapter, mode, 0, NULL);
- return ret;
-}
-
-/*
- * Stop the I2C transaction. This closes out the link, sending
- * a bare address packet with the MOT bit turned off
- */
-static void
-i2c_algo_dp_aux_stop(struct i2c_adapter *adapter, bool reading)
-{
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
- int mode = MODE_I2C_STOP;
-
- if (reading)
- mode |= MODE_I2C_READ;
- else
- mode |= MODE_I2C_WRITE;
- if (algo_data->running) {
- (void) i2c_algo_dp_aux_transaction(adapter, mode, 0, NULL);
- algo_data->running = false;
- }
-}
-
-/*
- * Write a single byte to the current I2C address, the
- * the I2C link must be running or this returns -EIO
- */
-static int
-i2c_algo_dp_aux_put_byte(struct i2c_adapter *adapter, u8 byte)
-{
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
- int ret;
-
- if (!algo_data->running)
- return -EIO;
-
- ret = i2c_algo_dp_aux_transaction(adapter, MODE_I2C_WRITE, byte, NULL);
- return ret;
-}
-
-/*
- * Read a single byte from the current I2C address, the
- * I2C link must be running or this returns -EIO
- */
-static int
-i2c_algo_dp_aux_get_byte(struct i2c_adapter *adapter, u8 *byte_ret)
-{
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
- int ret;
-
- if (!algo_data->running)
- return -EIO;
-
- ret = i2c_algo_dp_aux_transaction(adapter, MODE_I2C_READ, 0, byte_ret);
- return ret;
-}
-
-static int
-i2c_algo_dp_aux_xfer(struct i2c_adapter *adapter,
- struct i2c_msg *msgs,
- int num)
-{
- int ret = 0;
- bool reading = false;
- int m;
- int b;
-
- for (m = 0; m < num; m++) {
- u16 len = msgs[m].len;
- u8 *buf = msgs[m].buf;
- reading = (msgs[m].flags & I2C_M_RD) != 0;
- ret = i2c_algo_dp_aux_address(adapter, msgs[m].addr, reading);
- if (ret < 0)
- break;
- if (reading) {
- for (b = 0; b < len; b++) {
- ret = i2c_algo_dp_aux_get_byte(adapter, &buf[b]);
- if (ret < 0)
- break;
- }
- } else {
- for (b = 0; b < len; b++) {
- ret = i2c_algo_dp_aux_put_byte(adapter, buf[b]);
- if (ret < 0)
- break;
- }
- }
- if (ret < 0)
- break;
- }
- if (ret >= 0)
- ret = num;
- i2c_algo_dp_aux_stop(adapter, reading);
- DRM_DEBUG("dp_aux_xfer return %d\n", ret);
- return ret;
-}
-
-static u32
-i2c_algo_dp_aux_functionality(struct i2c_adapter *adapter)
-{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
- I2C_FUNC_SMBUS_READ_BLOCK_DATA |
- I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
- I2C_FUNC_10BIT_ADDR;
-}
-
-static const struct i2c_algorithm i2c_dp_aux_algo = {
- .master_xfer = i2c_algo_dp_aux_xfer,
- .functionality = i2c_algo_dp_aux_functionality,
-};
-
-static void
-i2c_dp_aux_reset_bus(struct i2c_adapter *adapter)
-{
- (void) i2c_algo_dp_aux_address(adapter, 0, false);
- (void) i2c_algo_dp_aux_stop(adapter, false);
-
-}
-
-static int
-i2c_dp_aux_prepare_bus(struct i2c_adapter *adapter)
-{
- adapter->algo = &i2c_dp_aux_algo;
- adapter->retries = 3;
- i2c_dp_aux_reset_bus(adapter);
- return 0;
-}
-
-int
-i2c_dp_aux_add_bus(struct i2c_adapter *adapter)
-{
- int error;
-
- error = i2c_dp_aux_prepare_bus(adapter);
- if (error)
- return error;
- error = i2c_add_adapter(adapter);
- return error;
-}
-EXPORT_SYMBOL(i2c_dp_aux_add_bus);
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