Skip to content

Fixes mmc_spi on C1#113

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
raporrass wants to merge 3 commits into from
Closed

Fixes mmc_spi on C1 #113

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
7d57d45
Enable mmc-slot
raporrass Jul 25, 2015
796f3c7
Fix uninitialized 'alldev_claim' field
raporrass Jul 25, 2015
5d9a8fd
Fix device name collision
raporrass Jul 25, 2015
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 7 additions & 0 deletions arch/arm/boot/dts/meson8b_odroidc.dts
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -504,6 +504,13 @@
num_chipselect = <2>;
cs_gpios = "GPIOX_20", "GPIOX_21";

mmc-slot@0 {
compatible = "mmc-spi-slot";
reg = <0x0>;
spi-max-frequency = <2000000>;
voltage-ranges = <3300 3300>;
};

spidev@0 {
spi-max-frequency = <2000000>;
compatible = "spidev";
Expand Down
25 changes: 12 additions & 13 deletions drivers/mmc/card/block.c
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -133,6 +133,10 @@ enum {
MMC_PACKED_NR_SINGLE,
};

#if defined(CONFIG_MACH_MESON8B_ODROIDC)
#define AML_SDHC_RESERVED_IDX 0
#endif

module_param(perdev_minors, int, 0444);
MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");

Expand DownExpand Up@@ -2205,25 +2209,16 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
*/
#if defined(CONFIG_MACH_MESON8B_ODROIDC)
if (strncmp(dev_name(mmc_dev(card->host)), "aml_sdhc.0", 8) == 0) {
md->name_idx = 0;
__set_bit(md->name_idx, name_use);
} else if (strncmp(dev_name(mmc_dev(card->host)), "aml_sdio.0", 8) == 0) {
if (!subname) {
md->name_idx = find_first_zero_bit(name_use, max_devices);
__set_bit(md->name_idx, name_use);
} else {
md->name_idx = ((struct mmc_blk_data *)
dev_to_disk(parent)->private_data)->name_idx;
}
}
#else
md->name_idx = AML_SDHC_RESERVED_IDX;
} else
#endif
if (!subname) {
md->name_idx = find_first_zero_bit(name_use, max_devices);
__set_bit(md->name_idx, name_use);
} else
md->name_idx = ((struct mmc_blk_data *)
dev_to_disk(parent)->private_data)->name_idx;
#endif

md->area_type = area_type;

/*
Expand DownExpand Up@@ -2660,6 +2655,10 @@ static int __init mmc_blk_init(void)
{
int res;

#if defined(CONFIG_MACH_MESON8B_ODROIDC)
__set_bit(AML_SDHC_RESERVED_IDX, name_use);
#endif

if (perdev_minors != CONFIG_MMC_BLOCK_MINORS)
pr_info("mmcblk: using %d minors per device\n", perdev_minors);

Expand Down
4 changes: 4 additions & 0 deletions drivers/mmc/host/mmc_spi.c
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -153,6 +153,7 @@ struct mmc_spi_host {
dma_addr_t ones_dma;
};

static struct mmc_claim mmc_spi_claim;

/****************************************************************************/

Expand DownExpand Up@@ -1365,6 +1366,9 @@ static int mmc_spi_probe(struct spi_device *spi)
if (!mmc)
goto nomem;

spin_lock_init(&mmc_spi_claim.lock);
init_waitqueue_head(&mmc_spi_claim.wq);
mmc->alldev_claim = &mmc_spi_claim;
mmc->ops = &mmc_spi_ops;
mmc->max_blk_size = MMC_SPI_BLOCKSIZE;
mmc->max_segs = MMC_SPI_BLOCKSATONCE;
Expand Down