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