diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_debug.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/mdss_debug.c b/drivers/video/fbdev/msm/mdss_debug.c index 3bf9acc2749d..6ed528500275 100644 --- a/drivers/video/fbdev/msm/mdss_debug.c +++ b/drivers/video/fbdev/msm/mdss_debug.c @@ -923,6 +923,92 @@ static int mdss_debugfs_cleanup(struct mdss_debug_data *mdd) return 0; } +static ssize_t mdss_debug_perf_bw_limit_read(struct file *file, + char __user *buff, size_t count, loff_t *ppos) +{ + struct mdss_data_type *mdata = file->private_data; + struct mdss_max_bw_settings *temp_settings; + int len = 0, i; + char buf[256]; + + if (!mdata) + return -ENODEV; + + if (*ppos) + return 0; /* the end */ + + pr_debug("mdata->max_bw_settings_cnt = %d\n", + mdata->max_bw_settings_cnt); + + temp_settings = mdata->max_bw_settings; + for (i = 0; i < mdata->max_bw_settings_cnt; i++) { + len += snprintf(buf + len, sizeof(buf), "%d %d\n", + temp_settings->mdss_max_bw_mode, + temp_settings->mdss_max_bw_val); + temp_settings++; + } + + if (len < 0) + return 0; + + if (copy_to_user(buff, buf, len)) + return -EFAULT; + + *ppos += len; /* increase offset */ + + return len; +} + +static ssize_t mdss_debug_perf_bw_limit_write(struct file *file, + const char __user *user_buf, size_t count, loff_t *ppos) +{ + struct mdss_data_type *mdata = file->private_data; + char buf[32]; + u32 mode, val; + u32 cnt; + struct mdss_max_bw_settings *temp_settings; + + if (!mdata) + return -ENODEV; + + cnt = mdata->max_bw_settings_cnt; + temp_settings = mdata->max_bw_settings; + + if (count >= sizeof(buf)) + return -EFAULT; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + buf[count] = 0; /* end of string */ + + if (strnchr(buf, count, ' ')) { + /* Parsing buf */ + if (sscanf(buf, "%d %d", &mode, &val) != 2) + return -EFAULT; + } + + while (cnt--) { + if (mode == temp_settings->mdss_max_bw_mode) { + temp_settings->mdss_max_bw_val = val; + break; + } else { + temp_settings++; + } + } + + if (cnt == 0) + pr_err("Input mode is invalid\n"); + + return count; +} + +static const struct file_operations mdss_perf_bw_limit_fops = { + .open = simple_open, + .read = mdss_debug_perf_bw_limit_read, + .write = mdss_debug_perf_bw_limit_write, +}; + static int mdss_debugfs_perf_init(struct mdss_debug_data *mdd, struct mdss_data_type *mdata) { @@ -973,6 +1059,9 @@ static int mdss_debugfs_perf_init(struct mdss_debug_data *mdd, debugfs_create_u32("latency_buff_per", 0644, mdd->perf, (u32 *)&mdata->latency_buff_per); + debugfs_create_file("threshold_bw_limit", 0644, mdd->perf, + (struct mdss_data_type *)mdata, &mdss_perf_bw_limit_fops); + return 0; } |