Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933045Ab0DHRTQ (ORCPT ); Thu, 8 Apr 2010 13:19:16 -0400 Received: from tex.lwn.net ([70.33.254.29]:46518 "EHLO vena.lwn.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932996Ab0DHRQ5 (ORCPT ); Thu, 8 Apr 2010 13:16:57 -0400 From: Jonathan Corbet To: linux-kernel@vger.kernel.org Cc: Florian Tobias Schandinat , Harald Welte , JosephChan@via.com.tw, ScottFang@viatech.com.cn, Deepak Saxena , linux-fbdev-devel@lists.sourceforge.net Subject: [PATCH 09/16] viafb: rework the I2C support in the VIA framebuffer driver Date: Thu, 8 Apr 2010 11:15:39 -0600 Message-Id: <1270746946-12467-10-git-send-email-corbet@lwn.net> X-Mailer: git-send-email 1.7.0.1 In-Reply-To: <1270746946-12467-1-git-send-email-corbet@lwn.net> References: <1270746946-12467-1-git-send-email-corbet@lwn.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 20527 Lines: 618 From: Harald Welte 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 thougt 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] Signed-off-by: Harald Welte Signed-off-by: Jonathan Corbet --- drivers/video/via/dvi.c | 35 ++++----- drivers/video/via/lcd.c | 15 ++-- drivers/video/via/via_i2c.c | 172 ++++++++++++++++++++++++++---------------- drivers/video/via/via_i2c.h | 43 +++++++---- drivers/video/via/viafbdev.c | 6 +- drivers/video/via/viafbdev.h | 4 +- drivers/video/via/vt1636.c | 36 ++++----- drivers/video/via/vt1636.h | 2 +- 8 files changed, 181 insertions(+), 132 deletions(-) diff --git a/drivers/video/via/dvi.c b/drivers/video/via/dvi.c index 67b3693..00d001e 100644 --- a/drivers/video/via/dvi.c +++ b/drivers/video/via/dvi.c @@ -96,7 +96,7 @@ int viafb_tmds_trasmitter_identify(void) viaparinfo->chip_info->tmds_chip_info.tmds_chip_name = VT1632_TMDS; viaparinfo->chip_info-> tmds_chip_info.tmds_chip_slave_addr = VT1632_TMDS_I2C_ADDR; - viaparinfo->chip_info->tmds_chip_info.i2c_port = I2CPORTINDEX; + viaparinfo->chip_info->tmds_chip_info.i2c_port = VIA_I2C_ADAP_31; if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID) != FAIL) { /* * Currently only support 12bits,dual edge,add 24bits mode later @@ -110,7 +110,7 @@ int viafb_tmds_trasmitter_identify(void) viaparinfo->chip_info->tmds_chip_info.i2c_port); return OK; } else { - viaparinfo->chip_info->tmds_chip_info.i2c_port = GPIOPORTINDEX; + viaparinfo->chip_info->tmds_chip_info.i2c_port = VIA_I2C_ADAP_2C; if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID) != FAIL) { tmds_register_write(0x08, 0x3b); @@ -160,32 +160,26 @@ int viafb_tmds_trasmitter_identify(void) static void tmds_register_write(int index, u8 data) { - viaparinfo->shared->i2c_stuff.i2c_port = - viaparinfo->chip_info->tmds_chip_info.i2c_port; - - viafb_i2c_writebyte(viaparinfo->chip_info->tmds_chip_info. - tmds_chip_slave_addr, index, - data); + viafb_i2c_writebyte(viaparinfo->chip_info->tmds_chip_info.i2c_port, + viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr, + index, data); } static int tmds_register_read(int index) { u8 data; - viaparinfo->shared->i2c_stuff.i2c_port = - viaparinfo->chip_info->tmds_chip_info.i2c_port; - viafb_i2c_readbyte((u8) viaparinfo->chip_info-> - tmds_chip_info.tmds_chip_slave_addr, - (u8) index, &data); + viafb_i2c_readbyte(viaparinfo->chip_info->tmds_chip_info.i2c_port, + (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr, + (u8) index, &data); return data; } static int tmds_register_read_bytes(int index, u8 *buff, int buff_len) { - viaparinfo->shared->i2c_stuff.i2c_port = - viaparinfo->chip_info->tmds_chip_info.i2c_port; - viafb_i2c_readbytes((u8) viaparinfo->chip_info->tmds_chip_info. - tmds_chip_slave_addr, (u8) index, buff, buff_len); + viafb_i2c_readbytes(viaparinfo->chip_info->tmds_chip_info.i2c_port, + (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr, + (u8) index, buff, buff_len); return 0; } @@ -648,9 +642,10 @@ void viafb_dvi_enable(void) else data = 0x37; viafb_i2c_writebyte(viaparinfo->chip_info-> - tmds_chip_info. - tmds_chip_slave_addr, - 0x08, data); + tmds_chip_info.i2c_port, + viaparinfo->chip_info-> + tmds_chip_info.tmds_chip_slave_addr, + 0x08, data); } } } diff --git a/drivers/video/via/lcd.c b/drivers/video/via/lcd.c index 37a9746..fc27534 100644 --- a/drivers/video/via/lcd.c +++ b/drivers/video/via/lcd.c @@ -212,16 +212,14 @@ int viafb_lvds_trasmitter_identify(void) if (machine_is_olpc()) return FAIL; #endif - 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"); } else { - viaparinfo->shared->i2c_stuff.i2c_port = GPIOPORTINDEX; - if (viafb_lvds_identify_vt1636()) { + if (viafb_lvds_identify_vt1636(VIA_I2C_ADAP_26)) { 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"); } @@ -485,9 +483,8 @@ 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; } diff --git a/drivers/video/via/via_i2c.c b/drivers/video/via/via_i2c.c index 15543e9..18bbbdd 100644 --- a/drivers/video/via/via_i2c.c +++ b/drivers/video/via/via_i2c.c @@ -1,5 +1,5 @@ /* - * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. + * Copyright 1998-2009 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 @@ -24,40 +24,44 @@ static void via_i2c_setscl(void *data, int state) { u8 val; - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; + struct via_i2c_adap_cfg *adap_data = data; - val = viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0xF0; + printk(KERN_DEBUG "reading index 0x%02x from IO 0x%x\n", + adap_data->ioport_index, adap_data->io_port); + val = viafb_read_reg(adap_data->io_port, + adap_data->ioport_index) & 0xF0; if (state) val |= 0x20; else val &= ~0x20; - switch (via_i2c_chan->i2c_port) { - case I2CPORTINDEX: + switch (adap_data->type) { + case VIA_I2C_I2C: val |= 0x01; break; - case GPIOPORTINDEX: + case VIA_I2C_GPIO: val |= 0x80; break; default: - DEBUG_MSG("via_i2c: specify wrong i2c port.\n"); + DEBUG_MSG("viafb_i2c: specify wrong i2c type.\n"); } - viafb_write_reg(via_i2c_chan->i2c_port, VIASR, val); + viafb_write_reg(adap_data->ioport_index, + adap_data->io_port, val); } static int via_i2c_getscl(void *data) { - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; + struct via_i2c_adap_cfg *adap_data = data; - if (viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0x08) + if (viafb_read_reg(adap_data->io_port, adap_data->ioport_index) & 0x08) return 1; return 0; } static int via_i2c_getsda(void *data) { - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; + struct via_i2c_adap_cfg *adap_data = data; - if (viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0x04) + if (viafb_read_reg(adap_data->io_port, adap_data->ioport_index) & 0x04) return 1; return 0; } @@ -65,27 +69,29 @@ static int via_i2c_getsda(void *data) static void via_i2c_setsda(void *data, int state) { u8 val; - struct via_i2c_stuff *via_i2c_chan = (struct via_i2c_stuff *)data; + struct via_i2c_adap_cfg *adap_data = data; - val = viafb_read_reg(VIASR, via_i2c_chan->i2c_port) & 0xF0; + val = viafb_read_reg(adap_data->io_port, + adap_data->ioport_index) & 0xF0; if (state) val |= 0x10; else val &= ~0x10; - switch (via_i2c_chan->i2c_port) { - case I2CPORTINDEX: + switch (adap_data->type) { + case VIA_I2C_I2C: val |= 0x01; break; - case GPIOPORTINDEX: + case VIA_I2C_GPIO: val |= 0x40; break; default: - DEBUG_MSG("via_i2c: specify wrong i2c port.\n"); + DEBUG_MSG("viafb_i2c: specify wrong i2c type.\n"); } - viafb_write_reg(via_i2c_chan->i2c_port, VIASR, val); + viafb_write_reg(adap_data->ioport_index, + adap_data->io_port, val); } -int viafb_i2c_readbyte(u8 slave_addr, u8 index, u8 *pdata) +int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata) { u8 mm1[] = {0x00}; struct i2c_msg msgs[2]; @@ -97,12 +103,11 @@ int viafb_i2c_readbyte(u8 slave_addr, u8 index, u8 *pdata) 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; + return i2c_transfer(&viaparinfo->shared->i2c_stuff[adap].adapter, + msgs, 2); } -int viafb_i2c_writebyte(u8 slave_addr, u8 index, u8 data) +int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data) { u8 msg[2] = { index, data }; struct i2c_msg msgs; @@ -111,10 +116,11 @@ int viafb_i2c_writebyte(u8 slave_addr, u8 index, u8 data) msgs.addr = slave_addr / 2; msgs.len = 2; msgs.buf = msg; - return i2c_transfer(&viaparinfo->shared->i2c_stuff.adapter, &msgs, 1); + return i2c_transfer(&viaparinfo->shared->i2c_stuff[adap].adapter, + &msgs, 1); } -int viafb_i2c_readbytes(u8 slave_addr, u8 index, u8 *buff, int buff_len) +int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len) { u8 mm1[] = {0x00}; struct i2c_msg msgs[2]; @@ -125,53 +131,89 @@ int viafb_i2c_readbytes(u8 slave_addr, u8 index, u8 *buff, int buff_len) 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; + return i2c_transfer(&viaparinfo->shared->i2c_stuff[adap].adapter, + msgs, 2); } -int viafb_create_i2c_bus(void *viapar) +static int create_i2c_bus(struct i2c_adapter *adapter, + struct i2c_algo_bit_data *algo, + struct via_i2c_adap_cfg *adap_cfg, + struct pci_dev *pdev) { - 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); + printk(KERN_DEBUG "viafb: creating bus adap=0x%p, algo_bit_data=0x%p, adap_cfg=0x%p\n", adapter, algo, adap_cfg); + + algo->setsda = via_i2c_setsda; + algo->setscl = via_i2c_setscl; + algo->getsda = via_i2c_getsda; + algo->getscl = via_i2c_getscl; + algo->udelay = 40; + algo->timeout = 20; + algo->data = adap_cfg; + + sprintf(adapter->name, "viafb i2c io_port idx 0x%02x", + adap_cfg->ioport_index); + adapter->owner = THIS_MODULE; + adapter->id = 0x01FFFF; + adapter->class = I2C_CLASS_DDC; + adapter->algo_data = algo; + if (pdev) + adapter->dev.parent = &pdev->dev; + else + adapter->dev.parent = NULL; + //i2c_set_adapdata(adapter, adap_cfg); /* 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); + via_i2c_setsda(adap_cfg, 1); + via_i2c_setscl(adap_cfg, 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; + return i2c_bit_add_bus(adapter); +} + +static struct via_i2c_adap_cfg adap_configs[] = { + [VIA_I2C_ADAP_26] = { VIA_I2C_I2C, VIASR, 0x26 }, + [VIA_I2C_ADAP_31] = { VIA_I2C_I2C, VIASR, 0x31 }, + [VIA_I2C_ADAP_25] = { VIA_I2C_GPIO, VIASR, 0x25 }, + [VIA_I2C_ADAP_2C] = { VIA_I2C_GPIO, VIASR, 0x2c }, + [VIA_I2C_ADAP_3D] = { VIA_I2C_GPIO, VIASR, 0x3d }, + { 0, 0, 0 } +}; + +int viafb_create_i2c_busses(struct viafb_par *viapar) +{ + int i, ret; + printk(KERN_DEBUG "%s: entering\n", __FUNCTION__); + + for (i = 0; i < VIAFB_NUM_I2C; i++) { + struct via_i2c_adap_cfg *adap_cfg = &adap_configs[i]; + struct via_i2c_stuff *i2c_stuff = &viapar->shared->i2c_stuff[i]; + + if (adap_cfg->type == 0) + break; + + ret = create_i2c_bus(&i2c_stuff->adapter, + &i2c_stuff->algo, adap_cfg, + NULL); //FIXME: PCIDEV + if (ret < 0) { + printk(KERN_ERR "viafb: cannot create i2c bus %u:%d\n", + i, ret); + //FIXME: properly release previous busses + return ret; + } + } + + return 0; } -void viafb_delete_i2c_buss(void *par) +void viafb_delete_i2c_busses(struct viafb_par *par) { - i2c_del_adapter(&((struct viafb_par *)par)->shared->i2c_stuff.adapter); + int i; + + for (i = 0; i < ARRAY_SIZE(par->shared->i2c_stuff); i++) { + struct via_i2c_stuff *i2c_stuff = &par->shared->i2c_stuff[i]; + /* only remove those entries in the array that we've + * actually used (and thus initialized algo_data) */ + if (i2c_stuff->adapter.algo_data == &i2c_stuff->algo) + i2c_del_adapter(&i2c_stuff->adapter); + } } diff --git a/drivers/video/via/via_i2c.h b/drivers/video/via/via_i2c.h index 3a13242..00ed978 100644 --- a/drivers/video/via/via_i2c.h +++ b/drivers/video/via/via_i2c.h @@ -1,5 +1,5 @@ /* - * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. + * Copyright 1998-2009 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 @@ -24,23 +24,38 @@ #include #include +enum via_i2c_type { + VIA_I2C_NONE, + VIA_I2C_I2C, + VIA_I2C_GPIO, +}; + +/* private data for each adapter */ +struct via_i2c_adap_cfg { + enum via_i2c_type type; + u_int16_t io_port; + u_int8_t ioport_index; +}; + struct via_i2c_stuff { u16 i2c_port; /* GPIO or I2C port */ struct i2c_adapter adapter; struct i2c_algo_bit_data algo; }; -#define I2CPORT 0x3c4 -#define I2CPORTINDEX 0x31 -#define GPIOPORT 0x3C4 -#define GPIOPORTINDEX 0x2C -#define I2C_BUS 1 -#define GPIO_BUS 2 -#define DELAYPORT 0x3C3 - -int viafb_i2c_readbyte(u8 slave_addr, u8 index, u8 *pdata); -int viafb_i2c_writebyte(u8 slave_addr, u8 index, u8 data); -int viafb_i2c_readbytes(u8 slave_addr, u8 index, u8 *buff, int buff_len); -int viafb_create_i2c_bus(void *par); -void viafb_delete_i2c_buss(void *par); +enum viafb_i2c_adap { + VIA_I2C_ADAP_26, + VIA_I2C_ADAP_31, + VIA_I2C_ADAP_25, + VIA_I2C_ADAP_2C, + VIA_I2C_ADAP_3D, +}; + +int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata); +int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data); +int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len); + +struct viafb_par; +int viafb_create_i2c_busses(struct viafb_par *par); +void viafb_delete_i2c_busses(struct viafb_par *par); #endif /* __VIA_I2C_H__ */ diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index 4a34d4f..ea3018e 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -1886,7 +1886,7 @@ static int __devinit via_pci_probe(struct pci_dev *pdev, viafb_dual_fb = 0; /* Set up I2C bus stuff */ - rc = viafb_create_i2c_bus(viaparinfo); + rc = viafb_create_i2c_busses(viaparinfo); if (rc) goto out_fb_release; @@ -2089,7 +2089,7 @@ out_fb1_release: out_unmap_screen: iounmap(viafbinfo->screen_base); out_delete_i2c: - viafb_delete_i2c_buss(viaparinfo); + viafb_delete_i2c_busses(viaparinfo); out_fb_release: framebuffer_release(viafbinfo); return rc; @@ -2105,7 +2105,7 @@ static void __devexit via_pci_remove(struct pci_dev *pdev) iounmap((void *)viafbinfo->screen_base); iounmap(viaparinfo->shared->engine_mmio); - viafb_delete_i2c_buss(viaparinfo); + viafb_delete_i2c_busses(viaparinfo); framebuffer_release(viafbinfo); if (viafb_dual_fb) diff --git a/drivers/video/via/viafbdev.h b/drivers/video/via/viafbdev.h index 0c94d24..1dab97b 100644 --- a/drivers/video/via/viafbdev.h +++ b/drivers/video/via/viafbdev.h @@ -37,11 +37,13 @@ #define VERSION_OS 0 /* 0: for 32 bits OS, 1: for 64 bits OS */ #define VERSION_MINOR 4 +#define VIAFB_NUM_I2C 5 + struct viafb_shared { struct proc_dir_entry *proc_entry; /*viafb proc entry */ /* I2C stuff */ - struct via_i2c_stuff i2c_stuff; + struct via_i2c_stuff i2c_stuff[VIAFB_NUM_I2C]; /* All the information will be needed to set engine */ struct tmds_setting_information tmds_setting_info; diff --git a/drivers/video/via/vt1636.c b/drivers/video/via/vt1636.c index a6b3749..d75b5f0 100644 --- a/drivers/video/via/vt1636.c +++ b/drivers/video/via/vt1636.c @@ -27,9 +27,8 @@ u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information { u8 data; - viaparinfo->shared->i2c_stuff.i2c_port = plvds_chip_info->i2c_port; - viafb_i2c_readbyte(plvds_chip_info->lvds_chip_slave_addr, index, &data); - + viafb_i2c_readbyte(plvds_chip_info->i2c_port, + plvds_chip_info->lvds_chip_slave_addr, index, &data); return data; } @@ -39,14 +38,13 @@ void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information { int index, data; - viaparinfo->shared->i2c_stuff.i2c_port = plvds_chip_info->i2c_port; - index = io_data.Index; data = viafb_gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info, index); data = (data & (~io_data.Mask)) | io_data.Data; - viafb_i2c_writebyte(plvds_chip_info->lvds_chip_slave_addr, index, data); + viafb_i2c_writebyte(plvds_chip_info->i2c_port, + plvds_chip_info->lvds_chip_slave_addr, index, data); } void viafb_init_lvds_vt1636(struct lvds_setting_information @@ -159,7 +157,7 @@ void viafb_disable_lvds_vt1636(struct lvds_setting_information } } -bool viafb_lvds_identify_vt1636(void) +bool viafb_lvds_identify_vt1636(u8 i2c_adapter) { u8 Buffer[2]; @@ -170,23 +168,23 @@ bool viafb_lvds_identify_vt1636(void) VT1636_LVDS_I2C_ADDR; /* Check vendor ID first: */ - viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info. - lvds_chip_slave_addr, - 0x00, &Buffer[0]); - viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info. - lvds_chip_slave_addr, - 0x01, &Buffer[1]); + viafb_i2c_readbyte(i2c_adapter, + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr, + 0x00, &Buffer[0]); + viafb_i2c_readbyte(i2c_adapter, + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr, + 0x01, &Buffer[1]); if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11))) return false; /* Check Chip ID: */ - viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info. - lvds_chip_slave_addr, - 0x02, &Buffer[0]); - viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info. - lvds_chip_slave_addr, - 0x03, &Buffer[1]); + viafb_i2c_readbyte(i2c_adapter, + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr, + 0x02, &Buffer[0]); + viafb_i2c_readbyte(i2c_adapter, + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr, + 0x03, &Buffer[1]); if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) { viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = VT1636_LVDS; diff --git a/drivers/video/via/vt1636.h b/drivers/video/via/vt1636.h index 2a150c5..4c1314e 100644 --- a/drivers/video/via/vt1636.h +++ b/drivers/video/via/vt1636.h @@ -22,7 +22,7 @@ #ifndef _VT1636_H_ #define _VT1636_H_ #include "chip.h" -bool viafb_lvds_identify_vt1636(void); +bool viafb_lvds_identify_vt1636(u8 i2c_adapter); void viafb_init_lvds_vt1636(struct lvds_setting_information *plvds_setting_info, struct lvds_chip_information *plvds_chip_info); void viafb_enable_lvds_vt1636(struct lvds_setting_information -- 1.7.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/