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https://github.com/edk2-porting/linux-next.git
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e75892715d
This patch adds the basic infrastructure and a few stub drivers for devices that are connected via I2C busses. The infrastructure will be used to replace and extend the support that is scattered throughout viafb. The stub drivers are not very useful yet but they show how the infrastructure works, provide information about the chips integrated into a system and maybe gather some testers as it would be very difficult for a single person to get a sane test environment. The only thing this actually does is probing the I2C busses which will hopefully not cause any regressions. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
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* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation;
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* either version 2, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR
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* A PARTICULAR PURPOSE.See the GNU General Public License
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* for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __VIAFBDEV_H__
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#define __VIAFBDEV_H__
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#include <linux/proc_fs.h>
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#include <linux/fb.h>
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#include <linux/spinlock.h>
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#include "via_aux.h"
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#include "ioctl.h"
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#include "share.h"
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#include "chip.h"
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#include "hw.h"
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#define VERSION_MAJOR 2
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#define VERSION_KERNEL 6 /* For kernel 2.6 */
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#define VERSION_OS 0 /* 0: for 32 bits OS, 1: for 64 bits OS */
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#define VERSION_MINOR 4
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#define VIAFB_NUM_I2C 5
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struct viafb_shared {
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u32 iga1_devices;
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u32 iga2_devices;
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struct proc_dir_entry *proc_entry; /*viafb proc entry */
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struct proc_dir_entry *iga1_proc_entry;
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struct proc_dir_entry *iga2_proc_entry;
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struct viafb_dev *vdev; /* Global dev info */
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/* I2C busses that may have auxiliary devices */
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struct via_aux_bus *i2c_26;
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struct via_aux_bus *i2c_31;
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struct via_aux_bus *i2c_2C;
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/* All the information will be needed to set engine */
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struct tmds_setting_information tmds_setting_info;
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struct lvds_setting_information lvds_setting_info;
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struct lvds_setting_information lvds_setting_info2;
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struct chip_information chip_info;
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/* hardware acceleration stuff */
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u32 cursor_vram_addr;
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u32 vq_vram_addr; /* virtual queue address in video ram */
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int (*hw_bitblt)(void __iomem *engine, u8 op, u32 width, u32 height,
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u8 dst_bpp, u32 dst_addr, u32 dst_pitch, u32 dst_x, u32 dst_y,
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u32 *src_mem, u32 src_addr, u32 src_pitch, u32 src_x, u32 src_y,
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u32 fg_color, u32 bg_color, u8 fill_rop);
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};
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struct viafb_par {
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u8 depth;
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u32 vram_addr;
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unsigned int fbmem; /*framebuffer physical memory address */
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unsigned int memsize; /*size of fbmem */
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u32 fbmem_free; /* Free FB memory */
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u32 fbmem_used; /* Use FB memory size */
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u32 iga_path;
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struct viafb_shared *shared;
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/* All the information will be needed to set engine */
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/* depreciated, use the ones in shared directly */
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struct tmds_setting_information *tmds_setting_info;
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struct lvds_setting_information *lvds_setting_info;
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struct lvds_setting_information *lvds_setting_info2;
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struct chip_information *chip_info;
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};
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extern int viafb_SAMM_ON;
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extern int viafb_dual_fb;
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extern int viafb_LCD2_ON;
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extern int viafb_LCD_ON;
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extern int viafb_DVI_ON;
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extern int viafb_hotplug;
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u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
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*plvds_setting_info, struct lvds_chip_information
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*plvds_chip_info, u8 index);
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void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information
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*plvds_setting_info, struct lvds_chip_information
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*plvds_chip_info, struct IODATA io_data);
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int via_fb_pci_probe(struct viafb_dev *vdev);
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void via_fb_pci_remove(struct pci_dev *pdev);
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/* Temporary */
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int viafb_init(void);
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void viafb_exit(void);
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#endif /* __VIAFBDEV_H__ */
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