drm: Import driver for the sil164 I2C TMDS transmitter.
sil164 transmitters are used for DVI outputs on Intel/nvidia and ATI setups. So far only nouveau can use this driver. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Tested-by: Patrice Mandin <patmandin@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
parent
a7b98b6748
commit
e190bfe568
4 changed files with 537 additions and 0 deletions
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@ -2,3 +2,6 @@ ccflags-y := -Iinclude/drm
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ch7006-y := ch7006_drv.o ch7006_mode.o
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obj-$(CONFIG_DRM_I2C_CH7006) += ch7006.o
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sil164-y := sil164_drv.o
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obj-$(CONFIG_DRM_I2C_SIL164) += sil164.o
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462
drivers/gpu/drm/i2c/sil164_drv.c
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462
drivers/gpu/drm/i2c/sil164_drv.c
Normal file
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@ -0,0 +1,462 @@
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/*
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* Copyright (C) 2010 Francisco Jerez.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "drm_crtc_helper.h"
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#include "drm_encoder_slave.h"
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#include "i2c/sil164.h"
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struct sil164_priv {
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struct sil164_encoder_params config;
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struct i2c_client *duallink_slave;
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uint8_t saved_state[0x10];
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uint8_t saved_slave_state[0x10];
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};
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#define to_sil164_priv(x) \
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((struct sil164_priv *)to_encoder_slave(x)->slave_priv)
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#define sil164_dbg(client, format, ...) do { \
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if (drm_debug & DRM_UT_KMS) \
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dev_printk(KERN_DEBUG, &client->dev, \
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"%s: " format, __func__, ## __VA_ARGS__); \
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} while (0)
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#define sil164_info(client, format, ...) \
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dev_info(&client->dev, format, __VA_ARGS__)
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#define sil164_err(client, format, ...) \
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dev_err(&client->dev, format, __VA_ARGS__)
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#define SIL164_I2C_ADDR_MASTER 0x38
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#define SIL164_I2C_ADDR_SLAVE 0x39
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/* HW register definitions */
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#define SIL164_VENDOR_LO 0x0
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#define SIL164_VENDOR_HI 0x1
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#define SIL164_DEVICE_LO 0x2
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#define SIL164_DEVICE_HI 0x3
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#define SIL164_REVISION 0x4
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#define SIL164_FREQ_MIN 0x6
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#define SIL164_FREQ_MAX 0x7
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#define SIL164_CONTROL0 0x8
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# define SIL164_CONTROL0_POWER_ON 0x01
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# define SIL164_CONTROL0_EDGE_RISING 0x02
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# define SIL164_CONTROL0_INPUT_24BIT 0x04
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# define SIL164_CONTROL0_DUAL_EDGE 0x08
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# define SIL164_CONTROL0_HSYNC_ON 0x10
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# define SIL164_CONTROL0_VSYNC_ON 0x20
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#define SIL164_DETECT 0x9
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# define SIL164_DETECT_INTR_STAT 0x01
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# define SIL164_DETECT_HOTPLUG_STAT 0x02
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# define SIL164_DETECT_RECEIVER_STAT 0x04
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# define SIL164_DETECT_INTR_MODE_RECEIVER 0x00
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# define SIL164_DETECT_INTR_MODE_HOTPLUG 0x08
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# define SIL164_DETECT_OUT_MODE_HIGH 0x00
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# define SIL164_DETECT_OUT_MODE_INTR 0x10
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# define SIL164_DETECT_OUT_MODE_RECEIVER 0x20
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# define SIL164_DETECT_OUT_MODE_HOTPLUG 0x30
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# define SIL164_DETECT_VSWING_STAT 0x80
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#define SIL164_CONTROL1 0xa
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# define SIL164_CONTROL1_DESKEW_ENABLE 0x10
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# define SIL164_CONTROL1_DESKEW_INCR_SHIFT 5
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#define SIL164_GPIO 0xb
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#define SIL164_CONTROL2 0xc
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# define SIL164_CONTROL2_FILTER_ENABLE 0x01
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# define SIL164_CONTROL2_FILTER_SETTING_SHIFT 1
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# define SIL164_CONTROL2_DUALLINK_MASTER 0x40
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# define SIL164_CONTROL2_SYNC_CONT 0x80
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#define SIL164_DUALLINK 0xd
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# define SIL164_DUALLINK_ENABLE 0x10
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# define SIL164_DUALLINK_SKEW_SHIFT 5
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#define SIL164_PLLZONE 0xe
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# define SIL164_PLLZONE_STAT 0x08
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# define SIL164_PLLZONE_FORCE_ON 0x10
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# define SIL164_PLLZONE_FORCE_HIGH 0x20
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/* HW access functions */
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static void
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sil164_write(struct i2c_client *client, uint8_t addr, uint8_t val)
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{
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uint8_t buf[] = {addr, val};
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int ret;
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ret = i2c_master_send(client, buf, ARRAY_SIZE(buf));
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if (ret < 0)
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sil164_err(client, "Error %d writing to subaddress 0x%x\n",
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ret, addr);
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}
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static uint8_t
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sil164_read(struct i2c_client *client, uint8_t addr)
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{
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uint8_t val;
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int ret;
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ret = i2c_master_send(client, &addr, sizeof(addr));
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if (ret < 0)
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goto fail;
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ret = i2c_master_recv(client, &val, sizeof(val));
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if (ret < 0)
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goto fail;
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return val;
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fail:
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sil164_err(client, "Error %d reading from subaddress 0x%x\n",
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ret, addr);
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return 0;
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}
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static void
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sil164_save_state(struct i2c_client *client, uint8_t *state)
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{
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int i;
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for (i = 0x8; i <= 0xe; i++)
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state[i] = sil164_read(client, i);
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}
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static void
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sil164_restore_state(struct i2c_client *client, uint8_t *state)
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{
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int i;
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for (i = 0x8; i <= 0xe; i++)
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sil164_write(client, i, state[i]);
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}
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static void
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sil164_set_power_state(struct i2c_client *client, bool on)
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{
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uint8_t control0 = sil164_read(client, SIL164_CONTROL0);
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if (on)
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control0 |= SIL164_CONTROL0_POWER_ON;
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else
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control0 &= ~SIL164_CONTROL0_POWER_ON;
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sil164_write(client, SIL164_CONTROL0, control0);
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}
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static void
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sil164_init_state(struct i2c_client *client,
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struct sil164_encoder_params *config,
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bool duallink)
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{
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sil164_write(client, SIL164_CONTROL0,
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SIL164_CONTROL0_HSYNC_ON |
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SIL164_CONTROL0_VSYNC_ON |
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(config->input_edge ? SIL164_CONTROL0_EDGE_RISING : 0) |
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(config->input_width ? SIL164_CONTROL0_INPUT_24BIT : 0) |
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(config->input_dual ? SIL164_CONTROL0_DUAL_EDGE : 0));
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sil164_write(client, SIL164_DETECT,
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SIL164_DETECT_INTR_STAT |
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SIL164_DETECT_OUT_MODE_RECEIVER);
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sil164_write(client, SIL164_CONTROL1,
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(config->input_skew ? SIL164_CONTROL1_DESKEW_ENABLE : 0) |
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(((config->input_skew + 4) & 0x7)
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<< SIL164_CONTROL1_DESKEW_INCR_SHIFT));
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sil164_write(client, SIL164_CONTROL2,
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SIL164_CONTROL2_SYNC_CONT |
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(config->pll_filter ? 0 : SIL164_CONTROL2_FILTER_ENABLE) |
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(4 << SIL164_CONTROL2_FILTER_SETTING_SHIFT));
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sil164_write(client, SIL164_PLLZONE, 0);
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if (duallink)
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sil164_write(client, SIL164_DUALLINK,
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SIL164_DUALLINK_ENABLE |
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(((config->duallink_skew + 4) & 0x7)
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<< SIL164_DUALLINK_SKEW_SHIFT));
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else
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sil164_write(client, SIL164_DUALLINK, 0);
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}
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/* DRM encoder functions */
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static void
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sil164_encoder_set_config(struct drm_encoder *encoder, void *params)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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priv->config = *(struct sil164_encoder_params *)params;
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}
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static void
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sil164_encoder_dpms(struct drm_encoder *encoder, int mode)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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bool on = (mode == DRM_MODE_DPMS_ON);
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bool duallink = (on && encoder->crtc->mode.clock > 165000);
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sil164_set_power_state(drm_i2c_encoder_get_client(encoder), on);
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if (priv->duallink_slave)
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sil164_set_power_state(priv->duallink_slave, duallink);
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}
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static void
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sil164_encoder_save(struct drm_encoder *encoder)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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sil164_save_state(drm_i2c_encoder_get_client(encoder),
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priv->saved_state);
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if (priv->duallink_slave)
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sil164_save_state(priv->duallink_slave,
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priv->saved_slave_state);
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}
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static void
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sil164_encoder_restore(struct drm_encoder *encoder)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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sil164_restore_state(drm_i2c_encoder_get_client(encoder),
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priv->saved_state);
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if (priv->duallink_slave)
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sil164_restore_state(priv->duallink_slave,
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priv->saved_slave_state);
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}
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static bool
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sil164_encoder_mode_fixup(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static int
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sil164_encoder_mode_valid(struct drm_encoder *encoder,
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struct drm_display_mode *mode)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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if (mode->clock < 32000)
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return MODE_CLOCK_LOW;
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if (mode->clock > 330000 ||
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(mode->clock > 165000 && !priv->duallink_slave))
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return MODE_CLOCK_HIGH;
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return MODE_OK;
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}
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static void
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sil164_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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bool duallink = adjusted_mode->clock > 165000;
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sil164_init_state(drm_i2c_encoder_get_client(encoder),
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&priv->config, duallink);
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if (priv->duallink_slave)
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sil164_init_state(priv->duallink_slave,
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&priv->config, duallink);
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sil164_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
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}
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static enum drm_connector_status
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sil164_encoder_detect(struct drm_encoder *encoder,
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struct drm_connector *connector)
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{
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struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
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if (sil164_read(client, SIL164_DETECT) & SIL164_DETECT_HOTPLUG_STAT)
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return connector_status_connected;
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else
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return connector_status_disconnected;
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}
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static int
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sil164_encoder_get_modes(struct drm_encoder *encoder,
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struct drm_connector *connector)
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{
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return 0;
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}
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static int
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sil164_encoder_create_resources(struct drm_encoder *encoder,
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struct drm_connector *connector)
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{
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return 0;
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}
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static int
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sil164_encoder_set_property(struct drm_encoder *encoder,
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struct drm_connector *connector,
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struct drm_property *property,
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uint64_t val)
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{
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return 0;
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}
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static void
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sil164_encoder_destroy(struct drm_encoder *encoder)
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{
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struct sil164_priv *priv = to_sil164_priv(encoder);
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if (priv->duallink_slave)
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i2c_unregister_device(priv->duallink_slave);
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kfree(priv);
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drm_i2c_encoder_destroy(encoder);
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}
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static struct drm_encoder_slave_funcs sil164_encoder_funcs = {
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.set_config = sil164_encoder_set_config,
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.destroy = sil164_encoder_destroy,
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.dpms = sil164_encoder_dpms,
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.save = sil164_encoder_save,
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.restore = sil164_encoder_restore,
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.mode_fixup = sil164_encoder_mode_fixup,
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.mode_valid = sil164_encoder_mode_valid,
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.mode_set = sil164_encoder_mode_set,
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.detect = sil164_encoder_detect,
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.get_modes = sil164_encoder_get_modes,
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.create_resources = sil164_encoder_create_resources,
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.set_property = sil164_encoder_set_property,
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};
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/* I2C driver functions */
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static int
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sil164_probe(struct i2c_client *client, const struct i2c_device_id *id)
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{
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int vendor = sil164_read(client, SIL164_VENDOR_HI) << 8 |
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sil164_read(client, SIL164_VENDOR_LO);
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int device = sil164_read(client, SIL164_DEVICE_HI) << 8 |
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sil164_read(client, SIL164_DEVICE_LO);
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int rev = sil164_read(client, SIL164_REVISION);
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if (vendor != 0x1 || device != 0x6) {
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sil164_dbg(client, "Unknown device %x:%x.%x\n",
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vendor, device, rev);
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return -ENODEV;
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}
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sil164_info(client, "Detected device %x:%x.%x\n",
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vendor, device, rev);
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return 0;
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}
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static int
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sil164_remove(struct i2c_client *client)
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{
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return 0;
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}
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static struct i2c_client *
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sil164_detect_slave(struct i2c_client *client)
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{
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struct i2c_adapter *adap = client->adapter;
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struct i2c_msg msg = {
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.addr = SIL164_I2C_ADDR_SLAVE,
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.len = 0,
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};
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const struct i2c_board_info info = {
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I2C_BOARD_INFO("sil164", SIL164_I2C_ADDR_SLAVE)
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};
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if (i2c_transfer(adap, &msg, 1) != 1) {
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sil164_dbg(adap, "No dual-link slave found.");
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return NULL;
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}
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return i2c_new_device(adap, &info);
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}
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static int
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sil164_encoder_init(struct i2c_client *client,
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struct drm_device *dev,
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struct drm_encoder_slave *encoder)
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{
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struct sil164_priv *priv;
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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encoder->slave_priv = priv;
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encoder->slave_funcs = &sil164_encoder_funcs;
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priv->duallink_slave = sil164_detect_slave(client);
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return 0;
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}
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static struct i2c_device_id sil164_ids[] = {
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{ "sil164", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, sil164_ids);
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static struct drm_i2c_encoder_driver sil164_driver = {
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.i2c_driver = {
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.probe = sil164_probe,
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.remove = sil164_remove,
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.driver = {
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.name = "sil164",
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},
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.id_table = sil164_ids,
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},
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.encoder_init = sil164_encoder_init,
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};
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/* Module initialization */
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static int __init
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sil164_init(void)
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{
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return drm_i2c_encoder_register(THIS_MODULE, &sil164_driver);
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}
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static void __exit
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sil164_exit(void)
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{
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drm_i2c_encoder_unregister(&sil164_driver);
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}
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|
||||
MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
|
||||
MODULE_DESCRIPTION("Silicon Image sil164 TMDS transmitter driver");
|
||||
MODULE_LICENSE("GPL and additional rights");
|
||||
|
||||
module_init(sil164_init);
|
||||
module_exit(sil164_exit);
|
|
@ -41,4 +41,13 @@ config DRM_I2C_CH7006
|
|||
|
||||
This driver is currently only useful if you're also using
|
||||
the nouveau driver.
|
||||
|
||||
config DRM_I2C_SIL164
|
||||
tristate "Silicon Image sil164 TMDS transmitter"
|
||||
default m if DRM_NOUVEAU
|
||||
help
|
||||
Support for sil164 and similar single-link (or dual-link
|
||||
when used in pairs) TMDS transmitters, used in some nVidia
|
||||
video cards.
|
||||
|
||||
endmenu
|
||||
|
|
63
include/drm/i2c/sil164.h
Normal file
63
include/drm/i2c/sil164.h
Normal file
|
@ -0,0 +1,63 @@
|
|||
/*
|
||||
* Copyright (C) 2010 Francisco Jerez.
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __DRM_I2C_SIL164_H__
|
||||
#define __DRM_I2C_SIL164_H__
|
||||
|
||||
/**
|
||||
* struct sil164_encoder_params
|
||||
*
|
||||
* Describes how the sil164 is connected to the GPU. It should be used
|
||||
* as the @params parameter of its @set_config method.
|
||||
*
|
||||
* See "http://www.siliconimage.com/docs/SiI-DS-0021-E-164.pdf".
|
||||
*/
|
||||
struct sil164_encoder_params {
|
||||
enum {
|
||||
SIL164_INPUT_EDGE_FALLING = 0,
|
||||
SIL164_INPUT_EDGE_RISING
|
||||
} input_edge;
|
||||
|
||||
enum {
|
||||
SIL164_INPUT_WIDTH_12BIT = 0,
|
||||
SIL164_INPUT_WIDTH_24BIT
|
||||
} input_width;
|
||||
|
||||
enum {
|
||||
SIL164_INPUT_SINGLE_EDGE = 0,
|
||||
SIL164_INPUT_DUAL_EDGE
|
||||
} input_dual;
|
||||
|
||||
enum {
|
||||
SIL164_PLL_FILTER_ON = 0,
|
||||
SIL164_PLL_FILTER_OFF,
|
||||
} pll_filter;
|
||||
|
||||
int input_skew; /** < Allowed range [-4, 3], use 0 for no de-skew. */
|
||||
int duallink_skew; /** < Allowed range [-4, 3]. */
|
||||
};
|
||||
|
||||
#endif
|
Loading…
Reference in a new issue