From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/video/fbdev/via/via_aux.h | 93 ++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 kernel/drivers/video/fbdev/via/via_aux.h (limited to 'kernel/drivers/video/fbdev/via/via_aux.h') diff --git a/kernel/drivers/video/fbdev/via/via_aux.h b/kernel/drivers/video/fbdev/via/via_aux.h new file mode 100644 index 000000000..a8de3f038 --- /dev/null +++ b/kernel/drivers/video/fbdev/via/via_aux.h @@ -0,0 +1,93 @@ +/* + * Copyright 2011 Florian Tobias Schandinat + * + * 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. + */ +/* + * infrastructure for devices connected via I2C + */ + +#ifndef __VIA_AUX_H__ +#define __VIA_AUX_H__ + + +#include +#include +#include + + +struct via_aux_bus { + struct i2c_adapter *adap; /* the I2C device to access the bus */ + struct list_head drivers; /* drivers for devices on this bus */ +}; + +struct via_aux_drv { + struct list_head chain; /* chain to support multiple drivers */ + + struct via_aux_bus *bus; /* the I2C bus used */ + u8 addr; /* the I2C slave address */ + + const char *name; /* human readable name of the driver */ + void *data; /* private data of this driver */ + + void (*cleanup)(struct via_aux_drv *drv); + const struct fb_videomode* (*get_preferred_mode) + (struct via_aux_drv *drv); +}; + + +struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap); +void via_aux_free(struct via_aux_bus *bus); +const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus); + + +static inline bool via_aux_add(struct via_aux_drv *drv) +{ + struct via_aux_drv *data = kmalloc(sizeof(*data), GFP_KERNEL); + + if (!data) + return false; + + *data = *drv; + list_add_tail(&data->chain, &data->bus->drivers); + return true; +} + +static inline bool via_aux_read(struct via_aux_drv *drv, u8 start, u8 *buf, + u8 len) +{ + struct i2c_msg msg[2] = { + {.addr = drv->addr, .flags = 0, .len = 1, .buf = &start}, + {.addr = drv->addr, .flags = I2C_M_RD, .len = len, .buf = buf} }; + + return i2c_transfer(drv->bus->adap, msg, 2) == 2; +} + + +/* probe functions of existing drivers - should only be called in via_aux.c */ +void via_aux_ch7301_probe(struct via_aux_bus *bus); +void via_aux_edid_probe(struct via_aux_bus *bus); +void via_aux_sii164_probe(struct via_aux_bus *bus); +void via_aux_vt1636_probe(struct via_aux_bus *bus); +void via_aux_vt1632_probe(struct via_aux_bus *bus); +void via_aux_vt1631_probe(struct via_aux_bus *bus); +void via_aux_vt1625_probe(struct via_aux_bus *bus); +void via_aux_vt1622_probe(struct via_aux_bus *bus); +void via_aux_vt1621_probe(struct via_aux_bus *bus); + + +#endif /* __VIA_AUX_H__ */ -- cgit 1.2.3-korg