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imx233/fuze+: add SD detection support

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30196 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Amaury Pouly 2011-07-22 15:45:58 +00:00
parent 85c32dbd12
commit 82f70b8efd
6 changed files with 164 additions and 27 deletions
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53
firmware/target/arm/imx233/sd-imx233.c
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@ -22,9 +22,54 @@
#include "system.h"
#include "sd.h"
#include "sdmmc.h"
#include "ssp-imx233.h"
#include "pinctrl-imx233.h"
#include "button-target.h"
/**
* This code assumes a single SD card slot
*/
#ifdef SANSA_FUZEPLUS
#define SD_SSP 1
#else
#error You need to configure the ssp to use
#endif
static tCardInfo card_info;
static struct mutex sd_mutex;
static void sd_detect_callback(int ssp)
{
(void)ssp;
/* This is called only if the state was stable for 300ms - check state
* and post appropriate event. */
if(imx233_ssp_sdmmc_detect(SD_SSP))
queue_broadcast(SYS_HOTSWAP_INSERTED, 0);
else
queue_broadcast(SYS_HOTSWAP_EXTRACTED, 0);
printf("sd_detect_callback(%d)", imx233_ssp_sdmmc_detect(SD_SSP));
imx233_ssp_sdmmc_setup_detect(SD_SSP, true, sd_detect_callback);
}
int sd_init(void)
{
mutex_init(&sd_mutex);
imx233_ssp_start(SD_SSP);
imx233_ssp_softreset(SD_SSP);
imx233_ssp_set_mode(SD_SSP, HW_SSP_CTRL1__SSP_MODE__SD_MMC);
#ifdef SANSA_FUZEPLUS
imx233_ssp_setup_ssp1_sd_mmc_pins(true, 4, PINCTRL_DRIVE_8mA, false);
#endif
imx233_ssp_sdmmc_setup_detect(SD_SSP, true, sd_detect_callback);
/* SSPCLK @ 96MHz
* gives bitrate of 96000 / 240 / 1 = 400kHz */
imx233_ssp_set_timings(SD_SSP, 240, 0, 0xffff);
imx233_ssp_set_bus_width(SD_SSP, 1);
imx233_ssp_set_block_size(SD_SSP, 9);
return 0;
}
@ -57,6 +102,12 @@ tCardInfo *card_get_info_target(int card_no)
int sd_num_drives(int first_drive)
{
(void) first_drive;
return 0;
return 1;
}
bool sd_present(IF_MD(int drive))
{
IF_MD((void) drive);
return imx233_ssp_sdmmc_detect(SD_SSP);
}