sm750.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef LYNXDRV_H_
  3#define LYNXDRV_H_
  4
  5#define FB_ACCEL_SMI 0xab
  6
  7#define MHZ(x) ((x) * 1000000)
  8
  9#define DEFAULT_SM750_CHIP_CLOCK	290
 10#define DEFAULT_SM750LE_CHIP_CLOCK	333
 11#ifndef SM750LE_REVISION_ID
 12#define SM750LE_REVISION_ID ((unsigned char)0xfe)
 13#endif
 14
 15enum sm750_pnltype {
 16	sm750_24TFT = 0,	/* 24bit tft */
 17	sm750_dualTFT = 2,	/* dual 18 bit tft */
 18	sm750_doubleTFT = 1,	/* 36 bit double pixel tft */
 19};
 20
 21/* vga channel is not concerned  */
 22enum sm750_dataflow {
 23	sm750_simul_pri,	/* primary => all head */
 24	sm750_simul_sec,	/* secondary => all head */
 25	sm750_dual_normal,	/* primary => panel head and secondary => crt */
 26	sm750_dual_swap,	/* primary => crt head and secondary => panel */
 27};
 28
 29enum sm750_channel {
 30	sm750_primary = 0,
 31	/* enum value equal to the register filed data */
 32	sm750_secondary = 1,
 33};
 34
 35enum sm750_path {
 36	sm750_panel = 1,
 37	sm750_crt = 2,
 38	sm750_pnc = 3,	/* panel and crt */
 39};
 40
 41struct init_status {
 42	ushort powerMode;
 43	/* below three clocks are in unit of MHZ*/
 44	ushort chip_clk;
 45	ushort mem_clk;
 46	ushort master_clk;
 47	ushort setAllEngOff;
 48	ushort resetMemory;
 49};
 50
 51struct lynx_accel {
 52	/* base virtual address of DPR registers */
 53	unsigned char __iomem *dpr_base;
 54	/* base virtual address of de data port */
 55	unsigned char __iomem *dp_port_base;
 56
 57	/* function pointers */
 58	void (*de_init)(struct lynx_accel *accel);
 59
 60	int (*de_wait)(void);/* see if hardware ready to work */
 61
 62	int (*de_fillrect)(struct lynx_accel *accel,
 63			   u32 base, u32 pitch, u32 bpp,
 64			   u32 x, u32 y, u32 width, u32 height,
 65			   u32 color, u32 rop);
 66
 67	int (*de_copyarea)(struct lynx_accel *accel,
 68			   u32 s_base, u32 s_pitch,
 69			   u32 sx, u32 sy,
 70			   u32 d_base, u32 d_pitch,
 71			   u32 bpp, u32 dx, u32 dy,
 72			   u32 width, u32 height,
 73			   u32 rop2);
 74
 75	int (*de_imageblit)(struct lynx_accel *accel, const char *p_srcbuf,
 76			    u32 src_delta, u32 start_bit, u32 d_base, u32 d_pitch,
 77			    u32 byte_per_pixel, u32 dx, u32 dy, u32 width,
 78			    u32 height, u32 f_color, u32 b_color, u32 rop2);
 79
 80};
 81
 82struct sm750_dev {
 83	/* common members */
 84	u16 devid;
 85	u8 revid;
 86	struct pci_dev *pdev;
 87	struct fb_info *fbinfo[2];
 88	struct lynx_accel accel;
 89	int accel_off;
 90	int fb_count;
 91	int mtrr_off;
 92	struct{
 93		int vram;
 94	} mtrr;
 95	/* all smi graphic adaptor got below attributes */
 96	unsigned long vidmem_start;
 97	unsigned long vidreg_start;
 98	__u32 vidmem_size;
 99	__u32 vidreg_size;
100	void __iomem *pvReg;
101	unsigned char __iomem *pvMem;
102	/* locks*/
103	spinlock_t slock;
104
105	struct init_status initParm;
106	enum sm750_pnltype pnltype;
107	enum sm750_dataflow dataflow;
108	int nocrt;
109
110	/*
111	 * 0: no hardware cursor
112	 * 1: primary crtc hw cursor enabled,
113	 * 2: secondary crtc hw cursor enabled
114	 * 3: both ctrc hw cursor enabled
115	 */
116	int hw_cursor;
117};
118
119struct lynx_cursor {
120	/* cursor width ,height and size */
121	int w;
122	int h;
123	int size;
124	/* hardware limitation */
125	int max_w;
126	int max_h;
127	/* base virtual address and offset  of cursor image */
128	char __iomem *vstart;
129	int offset;
130	/* mmio addr of hw cursor */
131	char __iomem *mmio;
132};
133
134struct lynxfb_crtc {
135	unsigned char __iomem *v_cursor; /* virtual address of cursor */
136	unsigned char __iomem *v_screen; /* virtual address of on_screen */
137	int o_cursor; /* cursor address offset in vidmem */
138	int o_screen; /* onscreen address offset in vidmem */
139	int channel;/* which channel this crtc stands for*/
140	resource_size_t vidmem_size;/* this view's video memory max size */
141
142	/* below attributes belong to info->fix, their value depends on specific adaptor*/
143	u16 line_pad;/* padding information:0,1,2,4,8,16,... */
144	u16 xpanstep;
145	u16 ypanstep;
146	u16 ywrapstep;
147
148	void *priv;
149
150	/* cursor information */
151	struct lynx_cursor cursor;
152};
153
154struct lynxfb_output {
155	int dpms;
156	int paths;
157	/*
158	 * which paths(s) this output stands for,for sm750:
159	 * paths=1:means output for panel paths
160	 * paths=2:means output for crt paths
161	 * paths=3:means output for both panel and crt paths
162	 */
163
164	int *channel;
165	/*
166	 * which channel these outputs linked with,for sm750:
167	 * *channel=0 means primary channel
168	 * *channel=1 means secondary channel
169	 * output->channel ==> &crtc->channel
170	 */
171	void *priv;
172};
173
174struct lynxfb_par {
175	/* either 0 or 1 for dual head adaptor,0 is the older one registered */
176	int index;
177	unsigned int pseudo_palette[256];
178	struct lynxfb_crtc crtc;
179	struct lynxfb_output output;
180	struct fb_info *info;
181	struct sm750_dev *dev;
182};
183
184static inline unsigned long ps_to_hz(unsigned int psvalue)
185{
186	unsigned long long numerator = 1000 * 1000 * 1000 * 1000ULL;
187	/* 10^12 / picosecond period gives frequency in Hz */
188	do_div(numerator, psvalue);
189	return (unsigned long)numerator;
190}
191
192int hw_sm750_map(struct sm750_dev *sm750_dev, struct pci_dev *pdev);
193int hw_sm750_inithw(struct sm750_dev *sm750_dev, struct pci_dev *pdev);
194void hw_sm750_init_accel(struct sm750_dev *sm750_dev);
195int hw_sm750_de_wait(void);
196int hw_sm750le_de_wait(void);
197
198int hw_sm750_output_set_mode(struct lynxfb_output *output,
199			     struct fb_var_screeninfo *var,
200			     struct fb_fix_screeninfo *fix);
201
202int hw_sm750_crtc_check_mode(struct lynxfb_crtc *crtc,
203			     struct fb_var_screeninfo *var);
204
205int hw_sm750_crtc_set_mode(struct lynxfb_crtc *crtc,
206			   struct fb_var_screeninfo *var,
207			   struct fb_fix_screeninfo *fix);
208
209int hw_sm750_set_col_reg(struct lynxfb_crtc *crtc, ushort index,
210			 ushort red, ushort green, ushort blue);
211
212int hw_sm750_set_blank(struct lynxfb_output *output, int blank);
213int hw_sm750le_set_blank(struct lynxfb_output *output, int blank);
214int hw_sm750_pan_display(struct lynxfb_crtc *crtc,
215			 const struct fb_var_screeninfo *var,
216			 const struct fb_info *info);
217
218#endif