1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18#include <linux/module.h>
19#include <linux/fb.h>
20#include <linux/platform_device.h>
21#include "fb_draw.h"
22
23#define GE_COMMAND_OFF 0x00
24#define GE_DEPTH_OFF 0x04
25#define GE_HIGHCOLOR_OFF 0x08
26#define GE_ROPCODE_OFF 0x14
27#define GE_FIRE_OFF 0x18
28#define GE_SRCBASE_OFF 0x20
29#define GE_SRCDISPW_OFF 0x24
30#define GE_SRCDISPH_OFF 0x28
31#define GE_SRCAREAX_OFF 0x2c
32#define GE_SRCAREAY_OFF 0x30
33#define GE_SRCAREAW_OFF 0x34
34#define GE_SRCAREAH_OFF 0x38
35#define GE_DESTBASE_OFF 0x3c
36#define GE_DESTDISPW_OFF 0x40
37#define GE_DESTDISPH_OFF 0x44
38#define GE_DESTAREAX_OFF 0x48
39#define GE_DESTAREAY_OFF 0x4c
40#define GE_DESTAREAW_OFF 0x50
41#define GE_DESTAREAH_OFF 0x54
42#define GE_PAT0C_OFF 0x88
43#define GE_ENABLE_OFF 0xec
44#define GE_INTEN_OFF 0xf0
45#define GE_STATUS_OFF 0xf8
46
47static void __iomem *regbase;
48
49void wmt_ge_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
50{
51 unsigned long fg, pat;
52
53 if (p->state != FBINFO_STATE_RUNNING)
54 return;
55
56 if (p->fix.visual == FB_VISUAL_TRUECOLOR ||
57 p->fix.visual == FB_VISUAL_DIRECTCOLOR)
58 fg = ((u32 *) (p->pseudo_palette))[rect->color];
59 else
60 fg = rect->color;
61
62 pat = pixel_to_pat(p->var.bits_per_pixel, fg);
63
64 if (p->fbops->fb_sync)
65 p->fbops->fb_sync(p);
66
67 writel(p->var.bits_per_pixel == 32 ? 3 :
68 (p->var.bits_per_pixel == 8 ? 0 : 1), regbase + GE_DEPTH_OFF);
69 writel(p->var.bits_per_pixel == 15 ? 1 : 0, regbase + GE_HIGHCOLOR_OFF);
70 writel(p->fix.smem_start, regbase + GE_DESTBASE_OFF);
71 writel(p->var.xres_virtual - 1, regbase + GE_DESTDISPW_OFF);
72 writel(p->var.yres_virtual - 1, regbase + GE_DESTDISPH_OFF);
73 writel(rect->dx, regbase + GE_DESTAREAX_OFF);
74 writel(rect->dy, regbase + GE_DESTAREAY_OFF);
75 writel(rect->width - 1, regbase + GE_DESTAREAW_OFF);
76 writel(rect->height - 1, regbase + GE_DESTAREAH_OFF);
77
78 writel(pat, regbase + GE_PAT0C_OFF);
79 writel(1, regbase + GE_COMMAND_OFF);
80 writel(rect->rop == ROP_XOR ? 0x5a : 0xf0, regbase + GE_ROPCODE_OFF);
81 writel(1, regbase + GE_FIRE_OFF);
82}
83EXPORT_SYMBOL_GPL(wmt_ge_fillrect);
84
85void wmt_ge_copyarea(struct fb_info *p, const struct fb_copyarea *area)
86{
87 if (p->state != FBINFO_STATE_RUNNING)
88 return;
89
90 if (p->fbops->fb_sync)
91 p->fbops->fb_sync(p);
92
93 writel(p->var.bits_per_pixel > 16 ? 3 :
94 (p->var.bits_per_pixel > 8 ? 1 : 0), regbase + GE_DEPTH_OFF);
95
96 writel(p->fix.smem_start, regbase + GE_SRCBASE_OFF);
97 writel(p->var.xres_virtual - 1, regbase + GE_SRCDISPW_OFF);
98 writel(p->var.yres_virtual - 1, regbase + GE_SRCDISPH_OFF);
99 writel(area->sx, regbase + GE_SRCAREAX_OFF);
100 writel(area->sy, regbase + GE_SRCAREAY_OFF);
101 writel(area->width - 1, regbase + GE_SRCAREAW_OFF);
102 writel(area->height - 1, regbase + GE_SRCAREAH_OFF);
103
104 writel(p->fix.smem_start, regbase + GE_DESTBASE_OFF);
105 writel(p->var.xres_virtual - 1, regbase + GE_DESTDISPW_OFF);
106 writel(p->var.yres_virtual - 1, regbase + GE_DESTDISPH_OFF);
107 writel(area->dx, regbase + GE_DESTAREAX_OFF);
108 writel(area->dy, regbase + GE_DESTAREAY_OFF);
109 writel(area->width - 1, regbase + GE_DESTAREAW_OFF);
110 writel(area->height - 1, regbase + GE_DESTAREAH_OFF);
111
112 writel(0xcc, regbase + GE_ROPCODE_OFF);
113 writel(1, regbase + GE_COMMAND_OFF);
114 writel(1, regbase + GE_FIRE_OFF);
115}
116EXPORT_SYMBOL_GPL(wmt_ge_copyarea);
117
118int wmt_ge_sync(struct fb_info *p)
119{
120 int loops = 5000000;
121 while ((readl(regbase + GE_STATUS_OFF) & 4) && --loops)
122 cpu_relax();
123 return loops > 0 ? 0 : -EBUSY;
124}
125EXPORT_SYMBOL_GPL(wmt_ge_sync);
126
127static int wmt_ge_rops_probe(struct platform_device *pdev)
128{
129 struct resource *res;
130
131 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
132 if (res == NULL) {
133 dev_err(&pdev->dev, "no I/O memory resource defined\n");
134 return -ENODEV;
135 }
136
137
138 if (unlikely(regbase)) {
139 WARN_ON(1);
140 return -EBUSY;
141 }
142
143 regbase = ioremap(res->start, resource_size(res));
144 if (regbase == NULL) {
145 dev_err(&pdev->dev, "failed to map I/O memory\n");
146 return -EBUSY;
147 }
148
149 writel(1, regbase + GE_ENABLE_OFF);
150 printk(KERN_INFO "Enabled support for WMT GE raster acceleration\n");
151
152 return 0;
153}
154
155static int wmt_ge_rops_remove(struct platform_device *pdev)
156{
157 iounmap(regbase);
158 return 0;
159}
160
161static const struct of_device_id wmt_dt_ids[] = {
162 { .compatible = "wm,prizm-ge-rops", },
163 { }
164};
165
166static struct platform_driver wmt_ge_rops_driver = {
167 .probe = wmt_ge_rops_probe,
168 .remove = wmt_ge_rops_remove,
169 .driver = {
170 .owner = THIS_MODULE,
171 .name = "wmt_ge_rops",
172 .of_match_table = wmt_dt_ids,
173 },
174};
175
176module_platform_driver(wmt_ge_rops_driver);
177
178MODULE_AUTHOR("Alexey Charkov <alchark@gmail.com>");
179MODULE_DESCRIPTION("Accelerators for raster operations using "
180 "WonderMedia Graphics Engine");
181MODULE_LICENSE("GPL v2");
182MODULE_DEVICE_TABLE(of, wmt_dt_ids);
183
