diff options
| author | Harald Welte <laforge@gnumonks.org> | 2009-05-23 00:35:39 +0800 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2010-04-27 13:01:45 -0600 |
| commit | 277d32a36cba0b42c9c6836ff07f9b978566e95c (patch) | |
| tree | 7161c2ddeb6064a42ba4babe3678a0493ecf6365 /drivers/video/via/lcd.c | |
| parent | c205d932530719d2a6ddb9152650e5bbe80c9400 (diff) | |
| download | linux-277d32a36cba0b42c9c6836ff07f9b978566e95c.tar.bz2 | |
viafb: rework the I2C support in the VIA framebuffer driver
This patch changes the way how the various I2C busses are used internally
inside the viafb driver: Previosuly, only a single i2c_adapter was created,
even though two different hardware I2C busses are accessed: A structure member
in a global variable was modified to indicate the bus to be used.
Now, all existing hardware busses are registered with the i2c core, and the
viafb_i2c_{read,write}byte[s]() function take the adapter number as function
call parameter, rather than referring to the global structure member.
[jc: even more painful merge with mainline changes ->2.6.34]
[jc: painful merge with OLPC changes]
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/video/via/lcd.c')
| -rw-r--r-- | drivers/video/via/lcd.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/video/via/lcd.c b/drivers/video/via/lcd.c index 09020f0b2d2a..e19441d9e49f 100644 --- a/drivers/video/via/lcd.c +++ b/drivers/video/via/lcd.c @@ -172,18 +172,16 @@ static bool lvds_identify_integratedlvds(void) int viafb_lvds_trasmitter_identify(void) { - viaparinfo->shared->i2c_stuff.i2c_port = I2CPORTINDEX; - if (viafb_lvds_identify_vt1636()) { - viaparinfo->chip_info->lvds_chip_info.i2c_port = I2CPORTINDEX; + if (viafb_lvds_identify_vt1636(VIA_I2C_ADAP_31)) { + viaparinfo->chip_info->lvds_chip_info.i2c_port = VIA_I2C_ADAP_31; DEBUG_MSG(KERN_INFO - "Found VIA VT1636 LVDS on port i2c 0x31 \n"); + "Found VIA VT1636 LVDS on port i2c 0x31\n"); } else { - viaparinfo->shared->i2c_stuff.i2c_port = GPIOPORTINDEX; - if (viafb_lvds_identify_vt1636()) { + if (viafb_lvds_identify_vt1636(VIA_I2C_ADAP_2C)) { viaparinfo->chip_info->lvds_chip_info.i2c_port = - GPIOPORTINDEX; + VIA_I2C_ADAP_2C; DEBUG_MSG(KERN_INFO - "Found VIA VT1636 LVDS on port gpio 0x2c \n"); + "Found VIA VT1636 LVDS on port gpio 0x2c\n"); } } @@ -421,9 +419,8 @@ static int lvds_register_read(int index) { u8 data; - viaparinfo->shared->i2c_stuff.i2c_port = GPIOPORTINDEX; - viafb_i2c_readbyte((u8) viaparinfo->chip_info-> - lvds_chip_info.lvds_chip_slave_addr, + viafb_i2c_readbyte(VIA_I2C_ADAP_2C, + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr, (u8) index, &data); return data; } |