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author | Amaury Pouly <pamaury@rockbox.org> | 2011-06-17 22:30:58 +0000 |
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committer | Amaury Pouly <pamaury@rockbox.org> | 2011-06-17 22:30:58 +0000 |
commit | 2cf33133820ee17e4b5d2d622db15dedff1a1f6e (patch) | |
tree | 60eddf4c3f16d5d274bc111ce53db02cfe75a6e8 /firmware/target/arm/imx233/dma-imx233.c | |
parent | d4800fa3851d2d89c1be03ec99af81f277892579 (diff) | |
download | rockbox-2cf33133820ee17e4b5d2d622db15dedff1a1f6e.tar.gz rockbox-2cf33133820ee17e4b5d2d622db15dedff1a1f6e.zip |
fuze+: add more clocking code, add dma code, add ssp code, add stub usb code, update storage to SD + MMC, beginning of the driver
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30010 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/imx233/dma-imx233.c')
-rw-r--r-- | firmware/target/arm/imx233/dma-imx233.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/dma-imx233.c b/firmware/target/arm/imx233/dma-imx233.c new file mode 100644 index 0000000000..d75c334aeb --- /dev/null +++ b/firmware/target/arm/imx233/dma-imx233.c | |||
@@ -0,0 +1,133 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by amaury Pouly | ||
11 | * | ||
12 | * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing | ||
13 | * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or | ||
16 | * modify it under the terms of the GNU General Public License | ||
17 | * as published by the Free Software Foundation; either version 2 | ||
18 | * of the License, or (at your option) any later version. | ||
19 | * | ||
20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
21 | * KIND, either express or implied. | ||
22 | * | ||
23 | ****************************************************************************/ | ||
24 | #include "config.h" | ||
25 | #include "system.h" | ||
26 | #include "dma-imx233.h" | ||
27 | |||
28 | void imx233_dma_init(void) | ||
29 | { | ||
30 | /* Enable APHB and APBX */ | ||
31 | __REG_CLR(HW_APBH_CTRL0) = __BLOCK_CLKGATE | __BLOCK_SFTRST; | ||
32 | __REG_CLR(HW_APBX_CTRL0) = __BLOCK_CLKGATE | __BLOCK_SFTRST; | ||
33 | } | ||
34 | |||
35 | void imx233_dma_reset_channel(unsigned chan) | ||
36 | { | ||
37 | if(APB_IS_APBX_CHANNEL(chan)) | ||
38 | __REG_SET(HW_APBX_CHANNEL_CTRL) = | ||
39 | HW_APBX_CHANNEL_CTRL__RESET_CHANNEL(APB_GET_DMA_CHANNEL(chan)); | ||
40 | else | ||
41 | __REG_SET(HW_APBH_CTRL0) = | ||
42 | HW_APBH_CTRL0__RESET_CHANNEL(APB_GET_DMA_CHANNEL(chan)); | ||
43 | } | ||
44 | |||
45 | void imx233_dma_clkgate_channel(unsigned chan, bool enable_clock) | ||
46 | { | ||
47 | if(APB_IS_APBX_CHANNEL(chan)) | ||
48 | return; | ||
49 | if(enable_clock) | ||
50 | __REG_CLR(HW_APBH_CTRL0) = | ||
51 | HW_APBH_CTRL0__CLKGATE_CHANNEL(APB_GET_DMA_CHANNEL(chan)); | ||
52 | else | ||
53 | __REG_SET(HW_APBH_CTRL0) = | ||
54 | HW_APBH_CTRL0__CLKGATE_CHANNEL(APB_GET_DMA_CHANNEL(chan)); | ||
55 | } | ||
56 | |||
57 | void imx233_dma_enable_channel_interrupt(unsigned chan, bool enable) | ||
58 | { | ||
59 | volatile uint32_t *ptr; | ||
60 | uint32_t bm; | ||
61 | if(APB_IS_APBX_CHANNEL(chan)) | ||
62 | { | ||
63 | ptr = &HW_APBX_CTRL1; | ||
64 | bm = HW_APBX_CTRL1__CHx_CMDCMPLT_IRQ_EN(APB_GET_DMA_CHANNEL(chan)); | ||
65 | } | ||
66 | else | ||
67 | { | ||
68 | ptr = &HW_APBH_CTRL1;; | ||
69 | bm = HW_APBH_CTRL1__CHx_CMDCMPLT_IRQ_EN(APB_GET_DMA_CHANNEL(chan)); | ||
70 | } | ||
71 | |||
72 | if(enable) | ||
73 | { | ||
74 | __REG_SET(*ptr) = bm; | ||
75 | imx233_dma_clear_channel_interrupt(chan); | ||
76 | } | ||
77 | else | ||
78 | __REG_CLR(*ptr) = bm; | ||
79 | } | ||
80 | |||
81 | void imx233_dma_clear_channel_interrupt(unsigned chan) | ||
82 | { | ||
83 | if(APB_IS_APBX_CHANNEL(chan)) | ||
84 | { | ||
85 | __REG_CLR(HW_APBX_CTRL1) = | ||
86 | HW_APBX_CTRL1__CHx_CMDCMPLT_IRQ(APB_GET_DMA_CHANNEL(chan)); | ||
87 | __REG_CLR(HW_APBX_CTRL2) = | ||
88 | HW_APBX_CTRL2__CHx_ERROR_IRQ(APB_GET_DMA_CHANNEL(chan)); | ||
89 | } | ||
90 | else | ||
91 | { | ||
92 | __REG_CLR(HW_APBH_CTRL1) = | ||
93 | HW_APBH_CTRL1__CHx_CMDCMPLT_IRQ(APB_GET_DMA_CHANNEL(chan)); | ||
94 | __REG_CLR(HW_APBH_CTRL2) = | ||
95 | HW_APBH_CTRL2__CHx_ERROR_IRQ(APB_GET_DMA_CHANNEL(chan)); | ||
96 | } | ||
97 | } | ||
98 | |||
99 | bool imx233_dma_is_channel_error_irq(unsigned chan) | ||
100 | { | ||
101 | if(APB_IS_APBX_CHANNEL(chan)) | ||
102 | return !!(HW_APBX_CTRL2 & | ||
103 | HW_APBX_CTRL2__CHx_ERROR_IRQ(APB_GET_DMA_CHANNEL(chan))); | ||
104 | else | ||
105 | return !!(HW_APBH_CTRL2 & | ||
106 | HW_APBH_CTRL2__CHx_ERROR_IRQ(APB_GET_DMA_CHANNEL(chan))); | ||
107 | } | ||
108 | |||
109 | void imx233_dma_start_command(unsigned chan, struct apb_dma_command_t *cmd) | ||
110 | { | ||
111 | if(APB_IS_APBX_CHANNEL(chan)) | ||
112 | { | ||
113 | HW_APBX_CHx_NXTCMDAR(APB_GET_DMA_CHANNEL(chan)) = (uint32_t)cmd; | ||
114 | HW_APBX_CHx_SEMA(APB_GET_DMA_CHANNEL(chan)) = 1; | ||
115 | } | ||
116 | else | ||
117 | { | ||
118 | HW_APBH_CHx_NXTCMDAR(APB_GET_DMA_CHANNEL(chan)) = (uint32_t)cmd; | ||
119 | HW_APBH_CHx_SEMA(APB_GET_DMA_CHANNEL(chan)) = 1; | ||
120 | } | ||
121 | } | ||
122 | |||
123 | void imx233_dma_wait_completion(unsigned chan) | ||
124 | { | ||
125 | volatile uint32_t *sema; | ||
126 | if(APB_IS_APBX_CHANNEL(chan)) | ||
127 | sema = &HW_APBX_CHx_SEMA(APB_GET_DMA_CHANNEL(chan)); | ||
128 | else | ||
129 | sema = &HW_APBH_CHx_SEMA(APB_GET_DMA_CHANNEL(chan)); | ||
130 | |||
131 | while(*sema & HW_APB_CHx_SEMA__PHORE_BM) | ||
132 | ; | ||
133 | } | ||