diff options
| author | Denis Karpov | 2009-09-22 16:44:38 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2009-09-23 07:39:34 -0700 |
| commit | d900f7128cf73d77467209672db2dcf0ff02dde6 (patch) | |
| tree | 1ff5f9412a7c23b7de7d6dee42512515dd00b077 /drivers | |
| parent | ef0b27d4ccacac32afc3d1c0e8a95e4091dfbc8c (diff) | |
omap_hsmmc: add debugfs entry (host registers)
Adds <debugfs_root>/kernel/debug/mmc<N>/regs entry, contents show
registers' state and some driver internal state variables.
Signed-off-by: Denis Karpov <ext-denis.2.karpov@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 4b3af9e11b7b..259c07d61a81 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -17,6 +17,8 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/dma-mapping.h> @@ -974,6 +976,59 @@ static struct mmc_host_ops mmc_omap_ops = { /* NYET -- enable_sdio_irq */ }; +#ifdef CONFIG_DEBUG_FS + +static int mmc_regs_show(struct seq_file *s, void *data) +{ + struct mmc_host *mmc = s->private; + struct mmc_omap_host *host = mmc_priv(mmc); + + seq_printf(s, "mmc%d regs:\n", mmc->index); + + seq_printf(s, "SYSCONFIG:\t0x%08x\n", + OMAP_HSMMC_READ(host->base, SYSCONFIG)); + seq_printf(s, "CON:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, CON)); + seq_printf(s, "HCTL:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, HCTL)); + seq_printf(s, "SYSCTL:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, SYSCTL)); + seq_printf(s, "IE:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, IE)); + seq_printf(s, "ISE:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, ISE)); + seq_printf(s, "CAPA:\t\t0x%08x\n", + OMAP_HSMMC_READ(host->base, CAPA)); + return 0; +} + +static int mmc_regs_open(struct inode *inode, struct file *file) +{ + return single_open(file, mmc_regs_show, inode->i_private); +} + +static const struct file_operations mmc_regs_fops = { + .open = mmc_regs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void omap_mmc_debugfs(struct mmc_host *mmc) +{ + if (mmc->debugfs_root) + debugfs_create_file("regs", S_IRUSR, mmc->debugfs_root, + mmc, &mmc_regs_fops); +} + +#else + +static void omap_mmc_debugfs(struct mmc_host *mmc) +{ +} + +#endif + static int __init omap_mmc_probe(struct platform_device *pdev) { struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; @@ -1157,6 +1212,8 @@ static int __init omap_mmc_probe(struct platform_device *pdev) goto err_cover_switch; } + omap_mmc_debugfs(mmc); + return 0; err_cover_switch: |