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/*++
* linux/drivers/video/wmt/vt1632.c
* WonderMedia video post processor (VPP) driver
*
* Copyright c 2013 WonderMedia Technologies, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* WonderMedia Technologies, Inc.
* 4F, 533, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C
--*/
#define VT1632_C
/* #define DEBUG */
/*----------------------- DEPENDENCE -----------------------------------------*/
#include "../vout.h"
/*----------------------- PRIVATE MACRO --------------------------------------*/
/* #define VT1632_XXXX xxxx *//*Example*/
/*----------------------- PRIVATE CONSTANTS ----------------------------------*/
/* #define VT1632_XXXX 1 *//*Example*/
#define VT1632_ADDR 0x10
/*----------------------- PRIVATE TYPE --------------------------------------*/
/* typedef xxxx vt1632_xxx_t; *//*Example*/
/*----------EXPORTED PRIVATE VARIABLES are defined in vt1632.h -------------*/
/*----------------------- INTERNAL PRIVATE VARIABLES - -----------------------*/
/* int vt1632_xxx; *//*Example*/
static int vt1632_not_ready;
/*--------------------- INTERNAL PRIVATE FUNCTIONS ---------------------------*/
/* void vt1632_xxx(void); *//*Example*/
/*----------------------- Function Body --------------------------------------*/
/*the define and struct i2c_msg were declared int linux/i2c.h*/
int vt1632_check_plugin(int hotplug)
{
char buf[1];
int plugin;
if (vt1632_not_ready)
return 1;
vpp_i2c_read(VPP_DVI_I2C_ID, VT1632_ADDR, 0x9, buf, 1);
plugin = (buf[0] & 0x4) ? 1 : 0;
DPRINT("[VT1632] DVI plug%s\n", (plugin) ? "in" : "out");
vout_set_int_type(4);
return plugin;
}
int vt1632_init(struct vout_s *vo)
{
char buf[16];
vt1632_not_ready = 1;
vpp_i2c_read(VPP_DVI_I2C_ID, VT1632_ADDR, 0x0, buf, 2);
if ((buf[0] != 0x06) || (buf[1] != 0x11)) /* check vender id */
return -1;
vt1632_not_ready = 0;
buf[0x0] = 0x37;
buf[0x1] = 0x20;
vpp_i2c_write(VPP_DVI_I2C_ID, VT1632_ADDR, 0x8, buf, 2);
DPRINT("[VT1632] DVI ext device\n");
return 0;
}
int vt1632_set_mode(unsigned int *option)
{
char buf[1];
vpp_datawidht_t dwidth;
if (vt1632_not_ready)
return -1;
dwidth = option[1] & BIT0;
DBGMSG("vt1632_set_mode(%d)\n", (dwidth) ? 24 : 12);
vpp_i2c_read(VPP_DVI_I2C_ID, VT1632_ADDR, 0x8, buf, 1);
if (dwidth == VPP_DATAWIDHT_12) {
buf[0] &= ~BIT2;
buf[0] |= BIT3;
} else {
buf[0] |= BIT2;
buf[0] &= ~BIT3;
}
vpp_i2c_write(VPP_DVI_I2C_ID, VT1632_ADDR, 0x8, buf, 1);
return 0;
}
void vt1632_set_power_down(int enable)
{
char buf[1];
if (vt1632_not_ready)
return;
DBGMSG("vt1632_set_power_down(%d)\n", enable);
vpp_i2c_read(VPP_DVI_I2C_ID, VT1632_ADDR, 0x8, buf, 1);
if (enable)
buf[0] &= ~BIT0;
else
buf[0] |= BIT0;
vpp_i2c_write(VPP_DVI_I2C_ID, VT1632_ADDR, 0x8, buf, 1);
}
int vt1632_config(vout_info_t *info)
{
return 0;
}
int vt1632_get_edid(char *buf)
{
return 0;
}
int vt1632_interrupt(void)
{
return vt1632_check_plugin(1);
}
/*----------------------- vout device plugin ---------------------------------*/
vout_dev_t vt1632_vout_dev_ops = {
.name = "VT1632",
.mode = VOUT_INF_DVI,
.init = vt1632_init,
.set_power_down = vt1632_set_power_down,
.set_mode = vt1632_set_mode,
.config = vt1632_config,
.check_plugin = vt1632_check_plugin,
.get_edid = vt1632_get_edid,
.interrupt = vt1632_interrupt,
};
int vt1632_module_init(void)
{
vout_device_register(&vt1632_vout_dev_ops);
return 0;
} /* End of vt1632_module_init */
module_init(vt1632_module_init);
/*--------------------End of Function Body -----------------------------------*/
#undef VT1632_C
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