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| author | Mike Isely <isely@pobox.com> | 2008-08-31 18:57:54 -0500 |
|---|---|---|
| committer | Mike Isely <isely@pobox.com> | 2008-08-31 18:57:54 -0500 |
| commit | d9d08459ac669feff9a869bd20095d379e897f9d (patch) | |
| tree | 8e6a238c51773a00cb47c0e2fd86a9be2c86feae /linux/drivers/media | |
| parent | 596acdb938b1e1c2f61c0bddc1359ce91d3f4db2 (diff) | |
| download | mediapointer-dvb-s2-d9d08459ac669feff9a869bd20095d379e897f9d.tar.gz mediapointer-dvb-s2-d9d08459ac669feff9a869bd20095d379e897f9d.tar.bz2 | |
pvrusb2: Implement default value retrieval in sysfs interface
From: Mike Isely <isely@pobox.com>
Priority: normal
Signed-off-by: Mike Isely <isely@pobox.com>
Diffstat (limited to 'linux/drivers/media')
| -rw-r--r-- | linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c index 90cb36435..b50565d27 100644 --- a/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c +++ b/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c @@ -66,6 +66,7 @@ struct pvr2_sysfs_ctl_item { struct device_attribute attr_type; struct device_attribute attr_min; struct device_attribute attr_max; + struct device_attribute attr_def; struct device_attribute attr_enum; struct device_attribute attr_bits; struct device_attribute attr_val; @@ -146,6 +147,24 @@ static ssize_t show_max(struct device *class_dev, return scnprintf(buf, PAGE_SIZE, "%ld\n", val); } +static ssize_t show_def(struct device *class_dev, + struct device_attribute *attr, + char *buf) +{ + struct pvr2_sysfs_ctl_item *cip; + int val; + int ret; + cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def); + ret = pvr2_ctrl_get_def(cip->cptr, &val); + pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %d, stat=%d", + cip->chptr, cip->ctl_id, val, ret); + if (ret < 0) { + /* Keep checkpatch.pl quiet */ + return ret; + } + return scnprintf(buf, PAGE_SIZE, "%d\n", val); +} + static ssize_t show_val_norm(struct device *class_dev, struct device_attribute *attr, char *buf) @@ -321,6 +340,10 @@ static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id) cip->attr_max.attr.mode = S_IRUGO; cip->attr_max.show = show_max; + cip->attr_def.attr.name = "def_val"; + cip->attr_def.attr.mode = S_IRUGO; + cip->attr_def.show = show_def; + cip->attr_val.attr.name = "cur_val"; cip->attr_val.attr.mode = S_IRUGO; @@ -344,6 +367,7 @@ static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id) cip->attr_gen[acnt++] = &cip->attr_name.attr; cip->attr_gen[acnt++] = &cip->attr_type.attr; cip->attr_gen[acnt++] = &cip->attr_val.attr; + cip->attr_gen[acnt++] = &cip->attr_def.attr; cip->attr_val.show = show_val_norm; cip->attr_val.store = store_val_norm; if (pvr2_ctrl_has_custom_symbols(cptr)) { |