diff options
Diffstat (limited to 'drivers/mmc/core/debugfs.c')
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 66 |
1 files changed, 60 insertions, 6 deletions
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index fe6808771bc7..91ea00a0f61d 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -12,9 +12,12 @@ #include <linux/slab.h> #include <linux/stat.h> #include <linux/fault-inject.h> +#include <linux/time.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> #include "core.h" #include "card.h" @@ -246,7 +249,7 @@ DEFINE_DEBUGFS_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); static int mmc_err_stats_show(struct seq_file *file, void *data) { - struct mmc_host *host = (struct mmc_host *)file->private; + struct mmc_host *host = file->private; const char *desc[MMC_ERR_MAX] = { [MMC_ERR_CMD_TIMEOUT] = "Command Timeout Occurred", [MMC_ERR_CMD_CRC] = "Command CRC Errors Occurred", @@ -298,6 +301,55 @@ static const struct file_operations mmc_err_stats_fops = { .release = single_release, }; +static int mmc_caps_get(void *data, u64 *val) +{ + *val = *(u32 *)data; + return 0; +} + +static int mmc_caps_set(void *data, u64 val) +{ + u32 *caps = data; + u32 diff = *caps ^ val; + u32 allowed = MMC_CAP_AGGRESSIVE_PM | + MMC_CAP_SD_HIGHSPEED | + MMC_CAP_MMC_HIGHSPEED | + MMC_CAP_UHS | + MMC_CAP_DDR | + MMC_CAP_4_BIT_DATA | + MMC_CAP_8_BIT_DATA | + MMC_CAP_CMD23; + + if (diff & ~allowed) + return -EINVAL; + + *caps = val; + + return 0; +} + +static int mmc_caps2_set(void *data, u64 val) +{ + u32 allowed = MMC_CAP2_HSX00_1_8V | + MMC_CAP2_HSX00_1_2V | + MMC_CAP2_CQE | + MMC_CAP2_CQE_DCMD; + u32 *caps = data; + u32 diff = *caps ^ val; + + if (diff & ~allowed) + return -EINVAL; + + *caps = val; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(mmc_caps_fops, mmc_caps_get, mmc_caps_set, + "0x%08llx\n"); +DEFINE_DEBUGFS_ATTRIBUTE(mmc_caps2_fops, mmc_caps_get, mmc_caps2_set, + "0x%08llx\n"); + void mmc_add_host_debugfs(struct mmc_host *host) { struct dentry *root; @@ -305,10 +357,11 @@ void mmc_add_host_debugfs(struct mmc_host *host) root = debugfs_create_dir(mmc_hostname(host), NULL); host->debugfs_root = root; - debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops); - debugfs_create_x32("caps", S_IRUSR, root, &host->caps); - debugfs_create_x32("caps2", S_IRUSR, root, &host->caps2); - debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, + debugfs_create_file("ios", 0400, root, host, &mmc_ios_fops); + debugfs_create_file("caps", 0600, root, &host->caps, &mmc_caps_fops); + debugfs_create_file("caps2", 0600, root, &host->caps2, + &mmc_caps2_fops); + debugfs_create_file_unsafe("clock", 0600, root, host, &mmc_clock_fops); debugfs_create_file_unsafe("err_state", 0600, root, host, @@ -341,7 +394,8 @@ void mmc_add_card_debugfs(struct mmc_card *card) root = debugfs_create_dir(mmc_card_id(card), host->debugfs_root); card->debugfs_root = root; - debugfs_create_x32("state", S_IRUSR, root, &card->state); + debugfs_create_x32("state", 0400, root, &card->state); + debugfs_create_x32("quirks", 0400, root, &card->quirks); } void mmc_remove_card_debugfs(struct mmc_card *card) |