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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/mmc-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/mmc-imx233.c')
-rw-r--r-- | firmware/target/arm/imx233/mmc-imx233.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/mmc-imx233.c b/firmware/target/arm/imx233/mmc-imx233.c new file mode 100644 index 0000000000..f56ff3725c --- /dev/null +++ b/firmware/target/arm/imx233/mmc-imx233.c | |||
@@ -0,0 +1,100 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by Amaury Pouly | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include "config.h" | ||
22 | #include "system.h" | ||
23 | #include "mmc.h" | ||
24 | #include "sdmmc.h" | ||
25 | #include "ssp-imx233.h" | ||
26 | #include "pinctrl-imx233.h" | ||
27 | #include "button-target.h" | ||
28 | |||
29 | #ifdef SANSA_FUZEPLUS | ||
30 | #define MMC_SSP 2 | ||
31 | #else | ||
32 | #error You need to configure the ssp to use | ||
33 | #endif | ||
34 | |||
35 | int mmc_init(void) | ||
36 | { | ||
37 | imx233_ssp_start(MMC_SSP); | ||
38 | imx233_ssp_softreset(MMC_SSP); | ||
39 | imx233_ssp_set_mode(MMC_SSP, HW_SSP_CTRL1__SSP_MODE__SD_MMC); | ||
40 | #ifdef SANSA_FUZEPLUS | ||
41 | /** Sansa Fuze+ has an internal eMMC 8-bit wide flash, power gate is pin PWM3 */ | ||
42 | imx233_set_pin_function(1, 29, PINCTRL_FUNCTION_GPIO); | ||
43 | imx233_enable_gpio_output(1, 29, true); | ||
44 | imx233_set_gpio_output(1, 29, false); | ||
45 | |||
46 | imx233_ssp_setup_ssp2_sd_mmc_pins(true, 8, PINCTRL_DRIVE_8mA); | ||
47 | #endif | ||
48 | /* SSPCLK @ 120MHz | ||
49 | * gives bitrate of 120 / 100 / 3 = 400kHz */ | ||
50 | imx233_ssp_set_timings(MMC_SSP, 100, 2); | ||
51 | imx233_ssp_set_timeout(MMC_SSP, 0xffff); | ||
52 | imx233_ssp_sd_mmc_power_up_sequence(MMC_SSP); | ||
53 | /* go to idle state */ | ||
54 | int ret = imx233_ssp_sd_mmc_transfer(MMC_SSP, SD_GO_IDLE_STATE, 0, SSP_NO_RESP, NULL, 0, false, NULL); | ||
55 | if(ret != 0) | ||
56 | return -1; | ||
57 | /* send op cond until the card respond with busy bit set; it must complete within 1sec */ | ||
58 | unsigned timeout = current_tick + HZ; | ||
59 | do | ||
60 | { | ||
61 | uint32_t ocr; | ||
62 | ret = imx233_ssp_sd_mmc_transfer(MMC_SSP, 1, 0x40ff8000, SSP_SHORT_RESP, NULL, 0, false, &ocr); | ||
63 | if(ret == 0 && ocr & (1 << 31)) | ||
64 | break; | ||
65 | }while(!TIME_AFTER(current_tick, timeout)); | ||
66 | |||
67 | if(ret != 0) | ||
68 | return -2; | ||
69 | |||
70 | uint32_t cid[4]; | ||
71 | ret = imx233_ssp_sd_mmc_transfer(MMC_SSP, 2, 0, SSP_LONG_RESP, NULL, 0, false, cid); | ||
72 | if(ret != 0) | ||
73 | return -3; | ||
74 | |||
75 | return 0; | ||
76 | } | ||
77 | |||
78 | int mmc_num_drives(int first_drive) | ||
79 | { | ||
80 | (void) first_drive; | ||
81 | return 1; | ||
82 | } | ||
83 | |||
84 | int mmc_read_sectors(IF_MD2(int drive,) unsigned long start, int count, void* buf) | ||
85 | { | ||
86 | IF_MD((void) drive); | ||
87 | (void) start; | ||
88 | (void) count; | ||
89 | (void) buf; | ||
90 | return -1; | ||
91 | } | ||
92 | |||
93 | int mmc_write_sectors(IF_MD2(int drive,) unsigned long start, int count, const void* buf) | ||
94 | { | ||
95 | IF_MD((void) drive); | ||
96 | (void) start; | ||
97 | (void) count; | ||
98 | (void) buf; | ||
99 | return -1; | ||
100 | } | ||