mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Akshay Joshi](/assets/img/avatar_default.png)
Various issues involved with the space character were generating warnings in the checkpatch.pl file. This patch removes most of those warnings. Signed-off-by: Akshay Joshi <me@akshayjoshi.com> Signed-off-by: Keith Packard <keithp@keithp.com>
401 lines
12 KiB
C
401 lines
12 KiB
C
/*
|
|
* Copyright © 2006 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>
|
|
*
|
|
*/
|
|
|
|
#include "dvo.h"
|
|
|
|
#define CH7017_TV_DISPLAY_MODE 0x00
|
|
#define CH7017_FLICKER_FILTER 0x01
|
|
#define CH7017_VIDEO_BANDWIDTH 0x02
|
|
#define CH7017_TEXT_ENHANCEMENT 0x03
|
|
#define CH7017_START_ACTIVE_VIDEO 0x04
|
|
#define CH7017_HORIZONTAL_POSITION 0x05
|
|
#define CH7017_VERTICAL_POSITION 0x06
|
|
#define CH7017_BLACK_LEVEL 0x07
|
|
#define CH7017_CONTRAST_ENHANCEMENT 0x08
|
|
#define CH7017_TV_PLL 0x09
|
|
#define CH7017_TV_PLL_M 0x0a
|
|
#define CH7017_TV_PLL_N 0x0b
|
|
#define CH7017_SUB_CARRIER_0 0x0c
|
|
#define CH7017_CIV_CONTROL 0x10
|
|
#define CH7017_CIV_0 0x11
|
|
#define CH7017_CHROMA_BOOST 0x14
|
|
#define CH7017_CLOCK_MODE 0x1c
|
|
#define CH7017_INPUT_CLOCK 0x1d
|
|
#define CH7017_GPIO_CONTROL 0x1e
|
|
#define CH7017_INPUT_DATA_FORMAT 0x1f
|
|
#define CH7017_CONNECTION_DETECT 0x20
|
|
#define CH7017_DAC_CONTROL 0x21
|
|
#define CH7017_BUFFERED_CLOCK_OUTPUT 0x22
|
|
#define CH7017_DEFEAT_VSYNC 0x47
|
|
#define CH7017_TEST_PATTERN 0x48
|
|
|
|
#define CH7017_POWER_MANAGEMENT 0x49
|
|
/** Enables the TV output path. */
|
|
#define CH7017_TV_EN (1 << 0)
|
|
#define CH7017_DAC0_POWER_DOWN (1 << 1)
|
|
#define CH7017_DAC1_POWER_DOWN (1 << 2)
|
|
#define CH7017_DAC2_POWER_DOWN (1 << 3)
|
|
#define CH7017_DAC3_POWER_DOWN (1 << 4)
|
|
/** Powers down the TV out block, and DAC0-3 */
|
|
#define CH7017_TV_POWER_DOWN_EN (1 << 5)
|
|
|
|
#define CH7017_VERSION_ID 0x4a
|
|
|
|
#define CH7017_DEVICE_ID 0x4b
|
|
#define CH7017_DEVICE_ID_VALUE 0x1b
|
|
#define CH7018_DEVICE_ID_VALUE 0x1a
|
|
#define CH7019_DEVICE_ID_VALUE 0x19
|
|
|
|
#define CH7017_XCLK_D2_ADJUST 0x53
|
|
#define CH7017_UP_SCALER_COEFF_0 0x55
|
|
#define CH7017_UP_SCALER_COEFF_1 0x56
|
|
#define CH7017_UP_SCALER_COEFF_2 0x57
|
|
#define CH7017_UP_SCALER_COEFF_3 0x58
|
|
#define CH7017_UP_SCALER_COEFF_4 0x59
|
|
#define CH7017_UP_SCALER_VERTICAL_INC_0 0x5a
|
|
#define CH7017_UP_SCALER_VERTICAL_INC_1 0x5b
|
|
#define CH7017_GPIO_INVERT 0x5c
|
|
#define CH7017_UP_SCALER_HORIZONTAL_INC_0 0x5d
|
|
#define CH7017_UP_SCALER_HORIZONTAL_INC_1 0x5e
|
|
|
|
#define CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT 0x5f
|
|
/**< Low bits of horizontal active pixel input */
|
|
|
|
#define CH7017_ACTIVE_INPUT_LINE_OUTPUT 0x60
|
|
/** High bits of horizontal active pixel input */
|
|
#define CH7017_LVDS_HAP_INPUT_MASK (0x7 << 0)
|
|
/** High bits of vertical active line output */
|
|
#define CH7017_LVDS_VAL_HIGH_MASK (0x7 << 3)
|
|
|
|
#define CH7017_VERTICAL_ACTIVE_LINE_OUTPUT 0x61
|
|
/**< Low bits of vertical active line output */
|
|
|
|
#define CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT 0x62
|
|
/**< Low bits of horizontal active pixel output */
|
|
|
|
#define CH7017_LVDS_POWER_DOWN 0x63
|
|
/** High bits of horizontal active pixel output */
|
|
#define CH7017_LVDS_HAP_HIGH_MASK (0x7 << 0)
|
|
/** Enables the LVDS power down state transition */
|
|
#define CH7017_LVDS_POWER_DOWN_EN (1 << 6)
|
|
/** Enables the LVDS upscaler */
|
|
#define CH7017_LVDS_UPSCALER_EN (1 << 7)
|
|
#define CH7017_LVDS_POWER_DOWN_DEFAULT_RESERVED 0x08
|
|
|
|
#define CH7017_LVDS_ENCODING 0x64
|
|
#define CH7017_LVDS_DITHER_2D (1 << 2)
|
|
#define CH7017_LVDS_DITHER_DIS (1 << 3)
|
|
#define CH7017_LVDS_DUAL_CHANNEL_EN (1 << 4)
|
|
#define CH7017_LVDS_24_BIT (1 << 5)
|
|
|
|
#define CH7017_LVDS_ENCODING_2 0x65
|
|
|
|
#define CH7017_LVDS_PLL_CONTROL 0x66
|
|
/** Enables the LVDS panel output path */
|
|
#define CH7017_LVDS_PANEN (1 << 0)
|
|
/** Enables the LVDS panel backlight */
|
|
#define CH7017_LVDS_BKLEN (1 << 3)
|
|
|
|
#define CH7017_POWER_SEQUENCING_T1 0x67
|
|
#define CH7017_POWER_SEQUENCING_T2 0x68
|
|
#define CH7017_POWER_SEQUENCING_T3 0x69
|
|
#define CH7017_POWER_SEQUENCING_T4 0x6a
|
|
#define CH7017_POWER_SEQUENCING_T5 0x6b
|
|
#define CH7017_GPIO_DRIVER_TYPE 0x6c
|
|
#define CH7017_GPIO_DATA 0x6d
|
|
#define CH7017_GPIO_DIRECTION_CONTROL 0x6e
|
|
|
|
#define CH7017_LVDS_PLL_FEEDBACK_DIV 0x71
|
|
# define CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT 4
|
|
# define CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT 0
|
|
# define CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED 0x80
|
|
|
|
#define CH7017_LVDS_PLL_VCO_CONTROL 0x72
|
|
# define CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED 0x80
|
|
# define CH7017_LVDS_PLL_VCO_SHIFT 4
|
|
# define CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT 0
|
|
|
|
#define CH7017_OUTPUTS_ENABLE 0x73
|
|
# define CH7017_CHARGE_PUMP_LOW 0x0
|
|
# define CH7017_CHARGE_PUMP_HIGH 0x3
|
|
# define CH7017_LVDS_CHANNEL_A (1 << 3)
|
|
# define CH7017_LVDS_CHANNEL_B (1 << 4)
|
|
# define CH7017_TV_DAC_A (1 << 5)
|
|
# define CH7017_TV_DAC_B (1 << 6)
|
|
# define CH7017_DDC_SELECT_DC2 (1 << 7)
|
|
|
|
#define CH7017_LVDS_OUTPUT_AMPLITUDE 0x74
|
|
#define CH7017_LVDS_PLL_EMI_REDUCTION 0x75
|
|
#define CH7017_LVDS_POWER_DOWN_FLICKER 0x76
|
|
|
|
#define CH7017_LVDS_CONTROL_2 0x78
|
|
# define CH7017_LOOP_FILTER_SHIFT 5
|
|
# define CH7017_PHASE_DETECTOR_SHIFT 0
|
|
|
|
#define CH7017_BANG_LIMIT_CONTROL 0x7f
|
|
|
|
struct ch7017_priv {
|
|
uint8_t dummy;
|
|
};
|
|
|
|
static void ch7017_dump_regs(struct intel_dvo_device *dvo);
|
|
static void ch7017_dpms(struct intel_dvo_device *dvo, int mode);
|
|
|
|
static bool ch7017_read(struct intel_dvo_device *dvo, u8 addr, u8 *val)
|
|
{
|
|
struct i2c_msg msgs[] = {
|
|
{
|
|
.addr = dvo->slave_addr,
|
|
.flags = 0,
|
|
.len = 1,
|
|
.buf = &addr,
|
|
},
|
|
{
|
|
.addr = dvo->slave_addr,
|
|
.flags = I2C_M_RD,
|
|
.len = 1,
|
|
.buf = val,
|
|
}
|
|
};
|
|
return i2c_transfer(dvo->i2c_bus, msgs, 2) == 2;
|
|
}
|
|
|
|
static bool ch7017_write(struct intel_dvo_device *dvo, u8 addr, u8 val)
|
|
{
|
|
uint8_t buf[2] = { addr, val };
|
|
struct i2c_msg msg = {
|
|
.addr = dvo->slave_addr,
|
|
.flags = 0,
|
|
.len = 2,
|
|
.buf = buf,
|
|
};
|
|
return i2c_transfer(dvo->i2c_bus, &msg, 1) == 1;
|
|
}
|
|
|
|
/** Probes for a CH7017 on the given bus and slave address. */
|
|
static bool ch7017_init(struct intel_dvo_device *dvo,
|
|
struct i2c_adapter *adapter)
|
|
{
|
|
struct ch7017_priv *priv;
|
|
const char *str;
|
|
u8 val;
|
|
|
|
priv = kzalloc(sizeof(struct ch7017_priv), GFP_KERNEL);
|
|
if (priv == NULL)
|
|
return false;
|
|
|
|
dvo->i2c_bus = adapter;
|
|
dvo->dev_priv = priv;
|
|
|
|
if (!ch7017_read(dvo, CH7017_DEVICE_ID, &val))
|
|
goto fail;
|
|
|
|
switch (val) {
|
|
case CH7017_DEVICE_ID_VALUE:
|
|
str = "ch7017";
|
|
break;
|
|
case CH7018_DEVICE_ID_VALUE:
|
|
str = "ch7018";
|
|
break;
|
|
case CH7019_DEVICE_ID_VALUE:
|
|
str = "ch7019";
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("ch701x not detected, got %d: from %s "
|
|
"slave %d.\n",
|
|
val, adapter->name, dvo->slave_addr);
|
|
goto fail;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("%s detected on %s, addr %d\n",
|
|
str, adapter->name, dvo->slave_addr);
|
|
return true;
|
|
|
|
fail:
|
|
kfree(priv);
|
|
return false;
|
|
}
|
|
|
|
static enum drm_connector_status ch7017_detect(struct intel_dvo_device *dvo)
|
|
{
|
|
return connector_status_connected;
|
|
}
|
|
|
|
static enum drm_mode_status ch7017_mode_valid(struct intel_dvo_device *dvo,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
if (mode->clock > 160000)
|
|
return MODE_CLOCK_HIGH;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static void ch7017_mode_set(struct intel_dvo_device *dvo,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
uint8_t lvds_pll_feedback_div, lvds_pll_vco_control;
|
|
uint8_t outputs_enable, lvds_control_2, lvds_power_down;
|
|
uint8_t horizontal_active_pixel_input;
|
|
uint8_t horizontal_active_pixel_output, vertical_active_line_output;
|
|
uint8_t active_input_line_output;
|
|
|
|
DRM_DEBUG_KMS("Registers before mode setting\n");
|
|
ch7017_dump_regs(dvo);
|
|
|
|
/* LVDS PLL settings from page 75 of 7017-7017ds.pdf*/
|
|
if (mode->clock < 100000) {
|
|
outputs_enable = CH7017_LVDS_CHANNEL_A | CH7017_CHARGE_PUMP_LOW;
|
|
lvds_pll_feedback_div = CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED |
|
|
(2 << CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT) |
|
|
(13 << CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT);
|
|
lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
|
|
(2 << CH7017_LVDS_PLL_VCO_SHIFT) |
|
|
(3 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
|
|
lvds_control_2 = (1 << CH7017_LOOP_FILTER_SHIFT) |
|
|
(0 << CH7017_PHASE_DETECTOR_SHIFT);
|
|
} else {
|
|
outputs_enable = CH7017_LVDS_CHANNEL_A | CH7017_CHARGE_PUMP_HIGH;
|
|
lvds_pll_feedback_div = CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED |
|
|
(2 << CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT) |
|
|
(3 << CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT);
|
|
lvds_pll_feedback_div = 35;
|
|
lvds_control_2 = (3 << CH7017_LOOP_FILTER_SHIFT) |
|
|
(0 << CH7017_PHASE_DETECTOR_SHIFT);
|
|
if (1) { /* XXX: dual channel panel detection. Assume yes for now. */
|
|
outputs_enable |= CH7017_LVDS_CHANNEL_B;
|
|
lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
|
|
(2 << CH7017_LVDS_PLL_VCO_SHIFT) |
|
|
(13 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
|
|
} else {
|
|
lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
|
|
(1 << CH7017_LVDS_PLL_VCO_SHIFT) |
|
|
(13 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
|
|
}
|
|
}
|
|
|
|
horizontal_active_pixel_input = mode->hdisplay & 0x00ff;
|
|
|
|
vertical_active_line_output = mode->vdisplay & 0x00ff;
|
|
horizontal_active_pixel_output = mode->hdisplay & 0x00ff;
|
|
|
|
active_input_line_output = ((mode->hdisplay & 0x0700) >> 8) |
|
|
(((mode->vdisplay & 0x0700) >> 8) << 3);
|
|
|
|
lvds_power_down = CH7017_LVDS_POWER_DOWN_DEFAULT_RESERVED |
|
|
(mode->hdisplay & 0x0700) >> 8;
|
|
|
|
ch7017_dpms(dvo, DRM_MODE_DPMS_OFF);
|
|
ch7017_write(dvo, CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT,
|
|
horizontal_active_pixel_input);
|
|
ch7017_write(dvo, CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT,
|
|
horizontal_active_pixel_output);
|
|
ch7017_write(dvo, CH7017_VERTICAL_ACTIVE_LINE_OUTPUT,
|
|
vertical_active_line_output);
|
|
ch7017_write(dvo, CH7017_ACTIVE_INPUT_LINE_OUTPUT,
|
|
active_input_line_output);
|
|
ch7017_write(dvo, CH7017_LVDS_PLL_VCO_CONTROL, lvds_pll_vco_control);
|
|
ch7017_write(dvo, CH7017_LVDS_PLL_FEEDBACK_DIV, lvds_pll_feedback_div);
|
|
ch7017_write(dvo, CH7017_LVDS_CONTROL_2, lvds_control_2);
|
|
ch7017_write(dvo, CH7017_OUTPUTS_ENABLE, outputs_enable);
|
|
|
|
/* Turn the LVDS back on with new settings. */
|
|
ch7017_write(dvo, CH7017_LVDS_POWER_DOWN, lvds_power_down);
|
|
|
|
DRM_DEBUG_KMS("Registers after mode setting\n");
|
|
ch7017_dump_regs(dvo);
|
|
}
|
|
|
|
/* set the CH7017 power state */
|
|
static void ch7017_dpms(struct intel_dvo_device *dvo, int mode)
|
|
{
|
|
uint8_t val;
|
|
|
|
ch7017_read(dvo, CH7017_LVDS_POWER_DOWN, &val);
|
|
|
|
/* Turn off TV/VGA, and never turn it on since we don't support it. */
|
|
ch7017_write(dvo, CH7017_POWER_MANAGEMENT,
|
|
CH7017_DAC0_POWER_DOWN |
|
|
CH7017_DAC1_POWER_DOWN |
|
|
CH7017_DAC2_POWER_DOWN |
|
|
CH7017_DAC3_POWER_DOWN |
|
|
CH7017_TV_POWER_DOWN_EN);
|
|
|
|
if (mode == DRM_MODE_DPMS_ON) {
|
|
/* Turn on the LVDS */
|
|
ch7017_write(dvo, CH7017_LVDS_POWER_DOWN,
|
|
val & ~CH7017_LVDS_POWER_DOWN_EN);
|
|
} else {
|
|
/* Turn off the LVDS */
|
|
ch7017_write(dvo, CH7017_LVDS_POWER_DOWN,
|
|
val | CH7017_LVDS_POWER_DOWN_EN);
|
|
}
|
|
|
|
/* XXX: Should actually wait for update power status somehow */
|
|
msleep(20);
|
|
}
|
|
|
|
static void ch7017_dump_regs(struct intel_dvo_device *dvo)
|
|
{
|
|
uint8_t val;
|
|
|
|
#define DUMP(reg) \
|
|
do { \
|
|
ch7017_read(dvo, reg, &val); \
|
|
DRM_DEBUG_KMS(#reg ": %02x\n", val); \
|
|
} while (0)
|
|
|
|
DUMP(CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT);
|
|
DUMP(CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT);
|
|
DUMP(CH7017_VERTICAL_ACTIVE_LINE_OUTPUT);
|
|
DUMP(CH7017_ACTIVE_INPUT_LINE_OUTPUT);
|
|
DUMP(CH7017_LVDS_PLL_VCO_CONTROL);
|
|
DUMP(CH7017_LVDS_PLL_FEEDBACK_DIV);
|
|
DUMP(CH7017_LVDS_CONTROL_2);
|
|
DUMP(CH7017_OUTPUTS_ENABLE);
|
|
DUMP(CH7017_LVDS_POWER_DOWN);
|
|
}
|
|
|
|
static void ch7017_destroy(struct intel_dvo_device *dvo)
|
|
{
|
|
struct ch7017_priv *priv = dvo->dev_priv;
|
|
|
|
if (priv) {
|
|
kfree(priv);
|
|
dvo->dev_priv = NULL;
|
|
}
|
|
}
|
|
|
|
struct intel_dvo_dev_ops ch7017_ops = {
|
|
.init = ch7017_init,
|
|
.detect = ch7017_detect,
|
|
.mode_valid = ch7017_mode_valid,
|
|
.mode_set = ch7017_mode_set,
|
|
.dpms = ch7017_dpms,
|
|
.dump_regs = ch7017_dump_regs,
|
|
.destroy = ch7017_destroy,
|
|
};
|