drivers/video/fbdev/riva/rivafb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __RIVAFB_H
   3 #define __RIVAFB_H
   4
   5 #include <linux/fb.h>
   6 #include <video/vga.h>
   7 #include <linux/i2c.h>
   8 #include <linux/i2c-algo-bit.h>
   9
  10 #include "riva_hw.h"
  11
  12 /* GGI compatibility macros */
  13 #define NUM_SEQ_REGS            0x05
  14 #define NUM_CRT_REGS            0x41
  15 #define NUM_GRC_REGS            0x09
  16 #define NUM_ATC_REGS            0x15
  17
  18 /* I2C */
  19 #define DDC_SCL_READ_MASK       (1 << 2)
  20 #define DDC_SCL_WRITE_MASK      (1 << 5)
  21 #define DDC_SDA_READ_MASK       (1 << 3)
  22 #define DDC_SDA_WRITE_MASK      (1 << 4)
  23
  24 /* holds the state of the VGA core and extended Riva hw state from riva_hw.c.
  25  * From KGI originally. */
  26 struct riva_regs {
  27         u8 attr[NUM_ATC_REGS];
  28         u8 crtc[NUM_CRT_REGS];
  29         u8 gra[NUM_GRC_REGS];
  30         u8 seq[NUM_SEQ_REGS];
  31         u8 misc_output;
  32         RIVA_HW_STATE ext;
  33 };
  34
  35 struct riva_par;
  36
  37 struct riva_i2c_chan {
  38         struct riva_par *par;
  39         unsigned long   ddc_base;
  40         struct i2c_adapter adapter;
  41         struct i2c_algo_bit_data algo;
  42 };
  43
  44 struct riva_par {
  45         RIVA_HW_INST riva;      /* interface to riva_hw.c */
  46         u32 pseudo_palette[16]; /* default palette */
  47         u32 palette[16];        /* for Riva128 */
  48         u8 __iomem *ctrl_base;  /* virtual control register base addr */
  49         unsigned dclk_max;      /* max DCLK */
  50
  51         struct riva_regs initial_state; /* initial startup video mode */
  52         struct riva_regs current_state;
  53 #ifdef CONFIG_X86
  54         struct vgastate state;
  55 #endif
  56         struct mutex open_lock;
  57         unsigned int ref_count;
  58         unsigned char *EDID;
  59         unsigned int Chipset;
  60         int forceCRTC;
  61         Bool SecondCRTC;
  62         int FlatPanel;
  63         struct pci_dev *pdev;
  64         int cursor_reset;
  65         int wc_cookie;
  66         struct riva_i2c_chan chan[3];
  67 };
  68
  69 void riva_common_setup(struct riva_par *);
  70 unsigned long riva_get_memlen(struct riva_par *);
  71 unsigned long riva_get_maxdclk(struct riva_par *);
  72 void riva_delete_i2c_busses(struct riva_par *par);
  73 void riva_create_i2c_busses(struct riva_par *par);
  74 int riva_probe_i2c_connector(struct riva_par *par, int conn, u8 **out_edid);
  75
  76 #endif /* __RIVAFB_H */