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3095faf5 SH |
1 | /* |
2 | * arch/arm/mach-netx/fb.c | |
3 | * | |
4 | * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
20 | #include <linux/device.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/dma-mapping.h> | |
23 | #include <linux/amba/bus.h> | |
24 | #include <linux/amba/clcd.h> | |
25 | ||
a09e64fb RK |
26 | #include <mach/netx-regs.h> |
27 | #include <mach/hardware.h> | |
3095faf5 SH |
28 | |
29 | struct clk {}; | |
30 | ||
31 | static struct clk fb_clk; | |
32 | ||
33 | static struct clcd_panel *netx_panel; | |
34 | ||
35 | void netx_clcd_enable(struct clcd_fb *fb) | |
36 | { | |
37 | } | |
38 | ||
39 | int netx_clcd_setup(struct clcd_fb *fb) | |
40 | { | |
41 | dma_addr_t dma; | |
42 | ||
43 | fb->panel = netx_panel; | |
44 | ||
45 | fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, 1024*1024, | |
46 | &dma, GFP_KERNEL); | |
47 | if (!fb->fb.screen_base) { | |
48 | printk(KERN_ERR "CLCD: unable to map framebuffer\n"); | |
49 | return -ENOMEM; | |
50 | } | |
51 | ||
52 | fb->fb.fix.smem_start = dma; | |
53 | fb->fb.fix.smem_len = 1024*1024; | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | int netx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
59 | { | |
60 | return dma_mmap_writecombine(&fb->dev->dev, vma, | |
61 | fb->fb.screen_base, | |
62 | fb->fb.fix.smem_start, | |
63 | fb->fb.fix.smem_len); | |
64 | } | |
65 | ||
66 | void netx_clcd_remove(struct clcd_fb *fb) | |
67 | { | |
68 | dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, | |
69 | fb->fb.screen_base, fb->fb.fix.smem_start); | |
70 | } | |
71 | ||
72 | void clk_disable(struct clk *clk) | |
73 | { | |
74 | } | |
75 | ||
76 | int clk_set_rate(struct clk *clk, unsigned long rate) | |
77 | { | |
78 | return 0; | |
79 | } | |
80 | ||
81 | int clk_enable(struct clk *clk) | |
82 | { | |
83 | return 0; | |
84 | } | |
85 | ||
86 | struct clk *clk_get(struct device *dev, const char *id) | |
87 | { | |
88 | return &fb_clk; | |
89 | } | |
90 | ||
91 | void clk_put(struct clk *clk) | |
92 | { | |
93 | } | |
94 | ||
95 | static struct amba_device fb_device = { | |
96 | .dev = { | |
97 | .bus_id = "fb", | |
98 | .coherent_dma_mask = ~0, | |
99 | }, | |
100 | .res = { | |
101 | .start = 0x00104000, | |
102 | .end = 0x00104fff, | |
103 | .flags = IORESOURCE_MEM, | |
104 | }, | |
105 | .irq = { NETX_IRQ_LCD, NO_IRQ }, | |
106 | .periphid = 0x10112400, | |
107 | }; | |
108 | ||
109 | int netx_fb_init(struct clcd_board *board, struct clcd_panel *panel) | |
110 | { | |
111 | netx_panel = panel; | |
112 | fb_device.dev.platform_data = board; | |
113 | return amba_device_register(&fb_device, &iomem_resource); | |
114 | } |