303 lines
7.3 KiB
C
303 lines
7.3 KiB
C
/**************************************************************************
|
|
|
|
Copyright © 2006 Dave Airlie
|
|
|
|
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, sub license, 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 NON-INFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHOR 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.
|
|
|
|
**************************************************************************/
|
|
|
|
#include "dvo.h"
|
|
|
|
#define SIL164_VID 0x0001
|
|
#define SIL164_DID 0x0006
|
|
|
|
#define SIL164_VID_LO 0x00
|
|
#define SIL164_VID_HI 0x01
|
|
#define SIL164_DID_LO 0x02
|
|
#define SIL164_DID_HI 0x03
|
|
#define SIL164_REV 0x04
|
|
#define SIL164_RSVD 0x05
|
|
#define SIL164_FREQ_LO 0x06
|
|
#define SIL164_FREQ_HI 0x07
|
|
|
|
#define SIL164_REG8 0x08
|
|
#define SIL164_8_VEN (1<<5)
|
|
#define SIL164_8_HEN (1<<4)
|
|
#define SIL164_8_DSEL (1<<3)
|
|
#define SIL164_8_BSEL (1<<2)
|
|
#define SIL164_8_EDGE (1<<1)
|
|
#define SIL164_8_PD (1<<0)
|
|
|
|
#define SIL164_REG9 0x09
|
|
#define SIL164_9_VLOW (1<<7)
|
|
#define SIL164_9_MSEL_MASK (0x7<<4)
|
|
#define SIL164_9_TSEL (1<<3)
|
|
#define SIL164_9_RSEN (1<<2)
|
|
#define SIL164_9_HTPLG (1<<1)
|
|
#define SIL164_9_MDI (1<<0)
|
|
|
|
#define SIL164_REGC 0x0c
|
|
|
|
struct sil164_save_rec {
|
|
uint8_t reg8;
|
|
uint8_t reg9;
|
|
uint8_t regc;
|
|
};
|
|
|
|
struct sil164_priv {
|
|
//I2CDevRec d;
|
|
bool quiet;
|
|
struct sil164_save_rec save_regs;
|
|
struct sil164_save_rec mode_regs;
|
|
};
|
|
|
|
#define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))
|
|
|
|
static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
|
|
{
|
|
struct sil164_priv *sil = dvo->dev_priv;
|
|
struct intel_i2c_chan *i2cbus = dvo->i2c_bus;
|
|
u8 out_buf[2];
|
|
u8 in_buf[2];
|
|
|
|
struct i2c_msg msgs[] = {
|
|
{
|
|
.addr = i2cbus->slave_addr,
|
|
.flags = 0,
|
|
.len = 1,
|
|
.buf = out_buf,
|
|
},
|
|
{
|
|
.addr = i2cbus->slave_addr,
|
|
.flags = I2C_M_RD,
|
|
.len = 1,
|
|
.buf = in_buf,
|
|
}
|
|
};
|
|
|
|
out_buf[0] = addr;
|
|
out_buf[1] = 0;
|
|
|
|
if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
|
|
*ch = in_buf[0];
|
|
return true;
|
|
};
|
|
|
|
if (!sil->quiet) {
|
|
DRM_DEBUG("Unable to read register 0x%02x from %s:%02x.\n",
|
|
addr, i2cbus->adapter.name, i2cbus->slave_addr);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
|
|
{
|
|
struct sil164_priv *sil= dvo->dev_priv;
|
|
struct intel_i2c_chan *i2cbus = dvo->i2c_bus;
|
|
uint8_t out_buf[2];
|
|
struct i2c_msg msg = {
|
|
.addr = i2cbus->slave_addr,
|
|
.flags = 0,
|
|
.len = 2,
|
|
.buf = out_buf,
|
|
};
|
|
|
|
out_buf[0] = addr;
|
|
out_buf[1] = ch;
|
|
|
|
if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
|
|
return true;
|
|
|
|
if (!sil->quiet) {
|
|
DRM_DEBUG("Unable to write register 0x%02x to %s:%d.\n",
|
|
addr, i2cbus->adapter.name, i2cbus->slave_addr);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Silicon Image 164 driver for chip on i2c bus */
|
|
static bool sil164_init(struct intel_dvo_device *dvo,
|
|
struct intel_i2c_chan *i2cbus)
|
|
{
|
|
/* this will detect the SIL164 chip on the specified i2c bus */
|
|
struct sil164_priv *sil;
|
|
unsigned char ch;
|
|
|
|
sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL);
|
|
if (sil == NULL)
|
|
return false;
|
|
|
|
dvo->i2c_bus = i2cbus;
|
|
dvo->i2c_bus->slave_addr = dvo->slave_addr;
|
|
dvo->dev_priv = sil;
|
|
sil->quiet = true;
|
|
|
|
if (!sil164_readb(dvo, SIL164_VID_LO, &ch))
|
|
goto out;
|
|
|
|
if (ch != (SIL164_VID & 0xff)) {
|
|
DRM_DEBUG("sil164 not detected got %d: from %s Slave %d.\n",
|
|
ch, i2cbus->adapter.name, i2cbus->slave_addr);
|
|
goto out;
|
|
}
|
|
|
|
if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
|
|
goto out;
|
|
|
|
if (ch != (SIL164_DID & 0xff)) {
|
|
DRM_DEBUG("sil164 not detected got %d: from %s Slave %d.\n",
|
|
ch, i2cbus->adapter.name, i2cbus->slave_addr);
|
|
goto out;
|
|
}
|
|
sil->quiet = false;
|
|
|
|
DRM_DEBUG("init sil164 dvo controller successfully!\n");
|
|
return true;
|
|
|
|
out:
|
|
kfree(sil);
|
|
return false;
|
|
}
|
|
|
|
static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo)
|
|
{
|
|
uint8_t reg9;
|
|
|
|
sil164_readb(dvo, SIL164_REG9, ®9);
|
|
|
|
if (reg9 & SIL164_9_HTPLG)
|
|
return connector_status_connected;
|
|
else
|
|
return connector_status_disconnected;
|
|
}
|
|
|
|
static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return MODE_OK;
|
|
}
|
|
|
|
static void sil164_mode_set(struct intel_dvo_device *dvo,
|
|
struct drm_display_mode *mode,
|
|
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.
|
|
*/
|
|
/* recommended programming sequence from doc */
|
|
/*sil164_writeb(sil, 0x08, 0x30);
|
|
sil164_writeb(sil, 0x09, 0x00);
|
|
sil164_writeb(sil, 0x0a, 0x90);
|
|
sil164_writeb(sil, 0x0c, 0x89);
|
|
sil164_writeb(sil, 0x08, 0x31);*/
|
|
/* don't do much */
|
|
return;
|
|
}
|
|
|
|
/* set the SIL164 power state */
|
|
static void sil164_dpms(struct intel_dvo_device *dvo, int mode)
|
|
{
|
|
int ret;
|
|
unsigned char ch;
|
|
|
|
ret = sil164_readb(dvo, SIL164_REG8, &ch);
|
|
if (ret == false)
|
|
return;
|
|
|
|
if (mode == DRM_MODE_DPMS_ON)
|
|
ch |= SIL164_8_PD;
|
|
else
|
|
ch &= ~SIL164_8_PD;
|
|
|
|
sil164_writeb(dvo, SIL164_REG8, ch);
|
|
return;
|
|
}
|
|
|
|
static void sil164_dump_regs(struct intel_dvo_device *dvo)
|
|
{
|
|
uint8_t val;
|
|
|
|
sil164_readb(dvo, SIL164_FREQ_LO, &val);
|
|
DRM_DEBUG("SIL164_FREQ_LO: 0x%02x\n", val);
|
|
sil164_readb(dvo, SIL164_FREQ_HI, &val);
|
|
DRM_DEBUG("SIL164_FREQ_HI: 0x%02x\n", val);
|
|
sil164_readb(dvo, SIL164_REG8, &val);
|
|
DRM_DEBUG("SIL164_REG8: 0x%02x\n", val);
|
|
sil164_readb(dvo, SIL164_REG9, &val);
|
|
DRM_DEBUG("SIL164_REG9: 0x%02x\n", val);
|
|
sil164_readb(dvo, SIL164_REGC, &val);
|
|
DRM_DEBUG("SIL164_REGC: 0x%02x\n", val);
|
|
}
|
|
|
|
static void sil164_save(struct intel_dvo_device *dvo)
|
|
{
|
|
struct sil164_priv *sil= dvo->dev_priv;
|
|
|
|
if (!sil164_readb(dvo, SIL164_REG8, &sil->save_regs.reg8))
|
|
return;
|
|
|
|
if (!sil164_readb(dvo, SIL164_REG9, &sil->save_regs.reg9))
|
|
return;
|
|
|
|
if (!sil164_readb(dvo, SIL164_REGC, &sil->save_regs.regc))
|
|
return;
|
|
|
|
return;
|
|
}
|
|
|
|
static void sil164_restore(struct intel_dvo_device *dvo)
|
|
{
|
|
struct sil164_priv *sil = dvo->dev_priv;
|
|
|
|
/* Restore it powered down initially */
|
|
sil164_writeb(dvo, SIL164_REG8, sil->save_regs.reg8 & ~0x1);
|
|
|
|
sil164_writeb(dvo, SIL164_REG9, sil->save_regs.reg9);
|
|
sil164_writeb(dvo, SIL164_REGC, sil->save_regs.regc);
|
|
sil164_writeb(dvo, SIL164_REG8, sil->save_regs.reg8);
|
|
}
|
|
|
|
static void sil164_destroy(struct intel_dvo_device *dvo)
|
|
{
|
|
struct sil164_priv *sil = dvo->dev_priv;
|
|
|
|
if (sil) {
|
|
kfree(sil);
|
|
dvo->dev_priv = NULL;
|
|
}
|
|
}
|
|
|
|
struct intel_dvo_dev_ops sil164_ops = {
|
|
.init = sil164_init,
|
|
.detect = sil164_detect,
|
|
.mode_valid = sil164_mode_valid,
|
|
.mode_set = sil164_mode_set,
|
|
.dpms = sil164_dpms,
|
|
.dump_regs = sil164_dump_regs,
|
|
.save = sil164_save,
|
|
.restore = sil164_restore,
|
|
.destroy = sil164_destroy,
|
|
};
|