diff options
Diffstat (limited to 'drivers/video/via/via_i2c.c')
| -rw-r--r-- | drivers/video/via/via_i2c.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/drivers/video/via/via_i2c.c b/drivers/video/via/via_i2c.c deleted file mode 100644 index 15543e96824..00000000000 --- a/drivers/video/via/via_i2c.c +++ /dev/null @@ -1,177 +0,0 @@ -/* - * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. - * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. - - * 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, or (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; 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, write to the Free Software - * Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include "global.h" - -static void via_i2c_setscl(void *data, int state) -{ - u8 val; - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; - - val = viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0xF0; - if (state) - val |= 0x20; - else - val &= ~0x20; - switch (via_i2c_chan->i2c_port) { - case I2CPORTINDEX: - val |= 0x01; - break; - case GPIOPORTINDEX: - val |= 0x80; - break; - default: - DEBUG_MSG("via_i2c: specify wrong i2c port.\n"); - } - viafb_write_reg(via_i2c_chan->i2c_port, VIASR, val); -} - -static int via_i2c_getscl(void *data) -{ - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; - - if (viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0x08) - return 1; - return 0; -} - -static int via_i2c_getsda(void *data) -{ - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; - - if (viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0x04) - return 1; - return 0; -} - -static void via_i2c_setsda(void *data, int state) -{ - u8 val; - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; - - val = viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0xF0; - if (state) - val |= 0x10; - else - val &= ~0x10; - switch (via_i2c_chan->i2c_port) { - case I2CPORTINDEX: - val |= 0x01; - break; - case GPIOPORTINDEX: - val |= 0x40; - break; - default: - DEBUG_MSG("via_i2c: specify wrong i2c port.\n"); - } - viafb_write_reg(via_i2c_chan->i2c_port, VIASR, val); -} - -int viafb_i2c_readbyte(u8 slave_addr, u8 index, u8 *pdata) -{ - u8 mm1[] = {0x00}; - struct i2c_msg msgs[2]; - - *pdata = 0; - msgs[0].flags = 0; - msgs[1].flags = I2C_M_RD; - msgs[0].addr = msgs[1].addr = slave_addr / 2; - mm1[0] = index; - msgs[0].len = 1; msgs[1].len = 1; - msgs[0].buf = mm1; msgs[1].buf = pdata; - i2c_transfer(&viaparinfo->shared->i2c_stuff.adapter, msgs, 2); - - return 0; -} - -int viafb_i2c_writebyte(u8 slave_addr, u8 index, u8 data) -{ - u8 msg[2] = { index, data }; - struct i2c_msg msgs; - - msgs.flags = 0; - msgs.addr = slave_addr / 2; - msgs.len = 2; - msgs.buf = msg; - return i2c_transfer(&viaparinfo->shared->i2c_stuff.adapter, &msgs, 1); -} - -int viafb_i2c_readbytes(u8 slave_addr, u8 index, u8 *buff, int buff_len) -{ - u8 mm1[] = {0x00}; - struct i2c_msg msgs[2]; - - msgs[0].flags = 0; - msgs[1].flags = I2C_M_RD; - msgs[0].addr = msgs[1].addr = slave_addr / 2; - mm1[0] = index; - msgs[0].len = 1; msgs[1].len = buff_len; - msgs[0].buf = mm1; msgs[1].buf = buff; - i2c_transfer(&viaparinfo->shared->i2c_stuff.adapter, msgs, 2); - return 0; -} - -int viafb_create_i2c_bus(void *viapar) -{ - int ret; - struct via_i2c_stuff *i2c_stuff = - &((struct viafb_par *)viapar)->shared->i2c_stuff; - - strcpy(i2c_stuff->adapter.name, "via_i2c"); - i2c_stuff->i2c_port = 0x0; - i2c_stuff->adapter.owner = THIS_MODULE; - i2c_stuff->adapter.id = 0x01FFFF; - i2c_stuff->adapter.class = 0; - i2c_stuff->adapter.algo_data = &i2c_stuff->algo; - i2c_stuff->adapter.dev.parent = NULL; - i2c_stuff->algo.setsda = via_i2c_setsda; - i2c_stuff->algo.setscl = via_i2c_setscl; - i2c_stuff->algo.getsda = via_i2c_getsda; - i2c_stuff->algo.getscl = via_i2c_getscl; - i2c_stuff->algo.udelay = 40; - i2c_stuff->algo.timeout = 20; - i2c_stuff->algo.data = i2c_stuff; - - i2c_set_adapdata(&i2c_stuff->adapter, i2c_stuff); - - /* Raise SCL and SDA */ - i2c_stuff->i2c_port = I2CPORTINDEX; - via_i2c_setsda(i2c_stuff, 1); - via_i2c_setscl(i2c_stuff, 1); - - i2c_stuff->i2c_port = GPIOPORTINDEX; - via_i2c_setsda(i2c_stuff, 1); - via_i2c_setscl(i2c_stuff, 1); - udelay(20); - - ret = i2c_bit_add_bus(&i2c_stuff->adapter); - if (ret == 0) - DEBUG_MSG("I2C bus %s registered.\n", i2c_stuff->adapter.name); - else - DEBUG_MSG("Failed to register I2C bus %s.\n", - i2c_stuff->adapter.name); - return ret; -} - -void viafb_delete_i2c_buss(void *par) -{ - i2c_del_adapter(&((struct viafb_par *)par)->shared->i2c_stuff.adapter); -} |