fbdev/riva/rivafb.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __RIVAFB_H
0003 #define __RIVAFB_H
0004
0005 #include <linux/fb.h>
0006 #include <video/vga.h>
0007 #include <linux/i2c.h>
0008 #include <linux/i2c-algo-bit.h>
0009
0010 #include "riva_hw.h"
0011
0012 /* GGI compatibility macros */
0013 #define NUM_SEQ_REGS        0x05
0014 #define NUM_CRT_REGS        0x41
0015 #define NUM_GRC_REGS        0x09
0016 #define NUM_ATC_REGS        0x15
0017
0018 /* I2C */
0019 #define DDC_SCL_READ_MASK       (1 << 2)
0020 #define DDC_SCL_WRITE_MASK      (1 << 5)
0021 #define DDC_SDA_READ_MASK       (1 << 3)
0022 #define DDC_SDA_WRITE_MASK      (1 << 4)
0023
0024 /* holds the state of the VGA core and extended Riva hw state from riva_hw.c.
0025  * From KGI originally. */
0026 struct riva_regs {
0027     u8 attr[NUM_ATC_REGS];
0028     u8 crtc[NUM_CRT_REGS];
0029     u8 gra[NUM_GRC_REGS];
0030     u8 seq[NUM_SEQ_REGS];
0031     u8 misc_output;
0032     RIVA_HW_STATE ext;
0033 };
0034
0035 struct riva_par;
0036
0037 struct riva_i2c_chan {
0038     struct riva_par *par;
0039     unsigned long   ddc_base;
0040     struct i2c_adapter adapter;
0041     struct i2c_algo_bit_data algo;
0042 };
0043
0044 struct riva_par {
0045     RIVA_HW_INST riva;  /* interface to riva_hw.c */
0046     u32 pseudo_palette[16]; /* default palette */
0047     u32 palette[16];        /* for Riva128 */
0048     u8 __iomem *ctrl_base;  /* virtual control register base addr */
0049     unsigned dclk_max;  /* max DCLK */
0050
0051     struct riva_regs initial_state; /* initial startup video mode */
0052     struct riva_regs current_state;
0053 #ifdef CONFIG_X86
0054     struct vgastate state;
0055 #endif
0056     struct mutex open_lock;
0057     unsigned int ref_count;
0058     unsigned char *EDID;
0059     unsigned int Chipset;
0060     int forceCRTC;
0061     Bool SecondCRTC;
0062     int FlatPanel;
0063     struct pci_dev *pdev;
0064     int cursor_reset;
0065     int wc_cookie;
0066     struct riva_i2c_chan chan[3];
0067 };
0068
0069 void riva_common_setup(struct riva_par *);
0070 unsigned long riva_get_memlen(struct riva_par *);
0071 unsigned long riva_get_maxdclk(struct riva_par *);
0072 void riva_delete_i2c_busses(struct riva_par *par);
0073 void riva_create_i2c_busses(struct riva_par *par);
0074 int riva_probe_i2c_connector(struct riva_par *par, int conn, u8 **out_edid);
0075
0076 #endif /* __RIVAFB_H */