319 lines
8 KiB
C
Executable file
319 lines
8 KiB
C
Executable file
/*
|
|
* Copyright © 2007 Dave Mueller
|
|
*
|
|
* 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:
|
|
* Dave Mueller <dave.mueller@gmx.ch>
|
|
*
|
|
*/
|
|
|
|
#include "dvo.h"
|
|
|
|
/* register definitions according to the TFP410 data sheet */
|
|
#define TFP410_VID 0x014C
|
|
#define TFP410_DID 0x0410
|
|
|
|
#define TFP410_VID_LO 0x00
|
|
#define TFP410_VID_HI 0x01
|
|
#define TFP410_DID_LO 0x02
|
|
#define TFP410_DID_HI 0x03
|
|
#define TFP410_REV 0x04
|
|
|
|
#define TFP410_CTL_1 0x08
|
|
#define TFP410_CTL_1_TDIS (1<<6)
|
|
#define TFP410_CTL_1_VEN (1<<5)
|
|
#define TFP410_CTL_1_HEN (1<<4)
|
|
#define TFP410_CTL_1_DSEL (1<<3)
|
|
#define TFP410_CTL_1_BSEL (1<<2)
|
|
#define TFP410_CTL_1_EDGE (1<<1)
|
|
#define TFP410_CTL_1_PD (1<<0)
|
|
|
|
#define TFP410_CTL_2 0x09
|
|
#define TFP410_CTL_2_VLOW (1<<7)
|
|
#define TFP410_CTL_2_MSEL_MASK (0x7<<4)
|
|
#define TFP410_CTL_2_MSEL (1<<4)
|
|
#define TFP410_CTL_2_TSEL (1<<3)
|
|
#define TFP410_CTL_2_RSEN (1<<2)
|
|
#define TFP410_CTL_2_HTPLG (1<<1)
|
|
#define TFP410_CTL_2_MDI (1<<0)
|
|
|
|
#define TFP410_CTL_3 0x0A
|
|
#define TFP410_CTL_3_DK_MASK (0x7<<5)
|
|
#define TFP410_CTL_3_DK (1<<5)
|
|
#define TFP410_CTL_3_DKEN (1<<4)
|
|
#define TFP410_CTL_3_CTL_MASK (0x7<<1)
|
|
#define TFP410_CTL_3_CTL (1<<1)
|
|
|
|
#define TFP410_USERCFG 0x0B
|
|
|
|
#define TFP410_DE_DLY 0x32
|
|
|
|
#define TFP410_DE_CTL 0x33
|
|
#define TFP410_DE_CTL_DEGEN (1<<6)
|
|
#define TFP410_DE_CTL_VSPOL (1<<5)
|
|
#define TFP410_DE_CTL_HSPOL (1<<4)
|
|
#define TFP410_DE_CTL_DEDLY8 (1<<0)
|
|
|
|
#define TFP410_DE_TOP 0x34
|
|
|
|
#define TFP410_DE_CNT_LO 0x36
|
|
#define TFP410_DE_CNT_HI 0x37
|
|
|
|
#define TFP410_DE_LIN_LO 0x38
|
|
#define TFP410_DE_LIN_HI 0x39
|
|
|
|
#define TFP410_H_RES_LO 0x3A
|
|
#define TFP410_H_RES_HI 0x3B
|
|
|
|
#define TFP410_V_RES_LO 0x3C
|
|
#define TFP410_V_RES_HI 0x3D
|
|
|
|
struct tfp410_priv {
|
|
bool quiet;
|
|
};
|
|
|
|
static bool tfp410_readb(struct intel_dvo_device *dvo, int addr, u8 *ch)
|
|
{
|
|
struct tfp410_priv *tfp = dvo->dev_priv;
|
|
struct i2c_adapter *adapter = dvo->i2c_bus;
|
|
u8 out_buf[2];
|
|
u8 in_buf[2];
|
|
|
|
struct i2c_msg msgs[] = {
|
|
{
|
|
.addr = dvo->slave_addr,
|
|
.flags = 0,
|
|
.len = 1,
|
|
.buf = out_buf,
|
|
},
|
|
{
|
|
.addr = dvo->slave_addr,
|
|
.flags = I2C_M_RD,
|
|
.len = 1,
|
|
.buf = in_buf,
|
|
}
|
|
};
|
|
|
|
out_buf[0] = addr;
|
|
out_buf[1] = 0;
|
|
|
|
if (i2c_transfer(adapter, msgs, 2) == 2) {
|
|
*ch = in_buf[0];
|
|
return true;
|
|
}
|
|
|
|
if (!tfp->quiet) {
|
|
DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
|
|
addr, adapter->name, dvo->slave_addr);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool tfp410_writeb(struct intel_dvo_device *dvo, int addr, u8 ch)
|
|
{
|
|
struct tfp410_priv *tfp = dvo->dev_priv;
|
|
struct i2c_adapter *adapter = dvo->i2c_bus;
|
|
u8 out_buf[2];
|
|
struct i2c_msg msg = {
|
|
.addr = dvo->slave_addr,
|
|
.flags = 0,
|
|
.len = 2,
|
|
.buf = out_buf,
|
|
};
|
|
|
|
out_buf[0] = addr;
|
|
out_buf[1] = ch;
|
|
|
|
if (i2c_transfer(adapter, &msg, 1) == 1)
|
|
return true;
|
|
|
|
if (!tfp->quiet) {
|
|
DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
|
|
addr, adapter->name, dvo->slave_addr);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int tfp410_getid(struct intel_dvo_device *dvo, int addr)
|
|
{
|
|
u8 ch1, ch2;
|
|
|
|
if (tfp410_readb(dvo, addr+0, &ch1) &&
|
|
tfp410_readb(dvo, addr+1, &ch2))
|
|
return ((ch2 << 8) & 0xFF00) | (ch1 & 0x00FF);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* Ti TFP410 driver for chip on i2c bus */
|
|
static bool tfp410_init(struct intel_dvo_device *dvo,
|
|
struct i2c_adapter *adapter)
|
|
{
|
|
/* this will detect the tfp410 chip on the specified i2c bus */
|
|
struct tfp410_priv *tfp;
|
|
int id;
|
|
|
|
tfp = kzalloc(sizeof(struct tfp410_priv), GFP_KERNEL);
|
|
if (tfp == NULL)
|
|
return false;
|
|
|
|
dvo->i2c_bus = adapter;
|
|
dvo->dev_priv = tfp;
|
|
tfp->quiet = true;
|
|
|
|
if ((id = tfp410_getid(dvo, TFP410_VID_LO)) != TFP410_VID) {
|
|
DRM_DEBUG_KMS("tfp410 not detected got VID %X: from %s "
|
|
"Slave %d.\n",
|
|
id, adapter->name, dvo->slave_addr);
|
|
goto out;
|
|
}
|
|
|
|
if ((id = tfp410_getid(dvo, TFP410_DID_LO)) != TFP410_DID) {
|
|
DRM_DEBUG_KMS("tfp410 not detected got DID %X: from %s "
|
|
"Slave %d.\n",
|
|
id, adapter->name, dvo->slave_addr);
|
|
goto out;
|
|
}
|
|
tfp->quiet = false;
|
|
return true;
|
|
out:
|
|
kfree(tfp);
|
|
return false;
|
|
}
|
|
|
|
static enum drm_connector_status tfp410_detect(struct intel_dvo_device *dvo)
|
|
{
|
|
enum drm_connector_status ret = connector_status_disconnected;
|
|
u8 ctl2;
|
|
|
|
if (tfp410_readb(dvo, TFP410_CTL_2, &ctl2)) {
|
|
if (ctl2 & TFP410_CTL_2_RSEN)
|
|
ret = connector_status_connected;
|
|
else
|
|
ret = connector_status_disconnected;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return MODE_OK;
|
|
}
|
|
|
|
static void tfp410_mode_set(struct intel_dvo_device *dvo,
|
|
const struct drm_display_mode *mode,
|
|
const struct drm_display_mode *adjusted_mode)
|
|
{
|
|
/* As long as the basics are set up, since we don't have clock dependencies
|
|
* in the mode setup, we can just leave the registers alone and everything
|
|
* will work fine.
|
|
*/
|
|
/* don't do much */
|
|
return;
|
|
}
|
|
|
|
/* set the tfp410 power state */
|
|
static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
|
|
{
|
|
u8 ctl1;
|
|
|
|
if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
|
|
return;
|
|
|
|
if (enable)
|
|
ctl1 |= TFP410_CTL_1_PD;
|
|
else
|
|
ctl1 &= ~TFP410_CTL_1_PD;
|
|
|
|
tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
|
|
}
|
|
|
|
static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
|
|
{
|
|
u8 ctl1;
|
|
|
|
if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
|
|
return false;
|
|
|
|
if (ctl1 & TFP410_CTL_1_PD)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
static void tfp410_dump_regs(struct intel_dvo_device *dvo)
|
|
{
|
|
u8 val, val2;
|
|
|
|
tfp410_readb(dvo, TFP410_REV, &val);
|
|
DRM_DEBUG_KMS("TFP410_REV: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_CTL_1, &val);
|
|
DRM_DEBUG_KMS("TFP410_CTL1: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_CTL_2, &val);
|
|
DRM_DEBUG_KMS("TFP410_CTL2: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_CTL_3, &val);
|
|
DRM_DEBUG_KMS("TFP410_CTL3: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_USERCFG, &val);
|
|
DRM_DEBUG_KMS("TFP410_USERCFG: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_DE_DLY, &val);
|
|
DRM_DEBUG_KMS("TFP410_DE_DLY: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_DE_CTL, &val);
|
|
DRM_DEBUG_KMS("TFP410_DE_CTL: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_DE_TOP, &val);
|
|
DRM_DEBUG_KMS("TFP410_DE_TOP: 0x%02X\n", val);
|
|
tfp410_readb(dvo, TFP410_DE_CNT_LO, &val);
|
|
tfp410_readb(dvo, TFP410_DE_CNT_HI, &val2);
|
|
DRM_DEBUG_KMS("TFP410_DE_CNT: 0x%02X%02X\n", val2, val);
|
|
tfp410_readb(dvo, TFP410_DE_LIN_LO, &val);
|
|
tfp410_readb(dvo, TFP410_DE_LIN_HI, &val2);
|
|
DRM_DEBUG_KMS("TFP410_DE_LIN: 0x%02X%02X\n", val2, val);
|
|
tfp410_readb(dvo, TFP410_H_RES_LO, &val);
|
|
tfp410_readb(dvo, TFP410_H_RES_HI, &val2);
|
|
DRM_DEBUG_KMS("TFP410_H_RES: 0x%02X%02X\n", val2, val);
|
|
tfp410_readb(dvo, TFP410_V_RES_LO, &val);
|
|
tfp410_readb(dvo, TFP410_V_RES_HI, &val2);
|
|
DRM_DEBUG_KMS("TFP410_V_RES: 0x%02X%02X\n", val2, val);
|
|
}
|
|
|
|
static void tfp410_destroy(struct intel_dvo_device *dvo)
|
|
{
|
|
struct tfp410_priv *tfp = dvo->dev_priv;
|
|
|
|
if (tfp) {
|
|
kfree(tfp);
|
|
dvo->dev_priv = NULL;
|
|
}
|
|
}
|
|
|
|
const struct intel_dvo_dev_ops tfp410_ops = {
|
|
.init = tfp410_init,
|
|
.detect = tfp410_detect,
|
|
.mode_valid = tfp410_mode_valid,
|
|
.mode_set = tfp410_mode_set,
|
|
.dpms = tfp410_dpms,
|
|
.get_hw_state = tfp410_get_hw_state,
|
|
.dump_regs = tfp410_dump_regs,
|
|
.destroy = tfp410_destroy,
|
|
};
|