From fe9ee51e6a43a79d9c6bf92124b4db542157aed3 Mon Sep 17 00:00:00 2001 From: Maya Erez Date: Fri, 16 Jun 2017 10:38:04 +0300 Subject: wil6210: add support for PCIe D3hot in system suspend In order to preserve the connection in suspend/resume flow, wil6210 host allows going to PCIe D3hot state in suspend, instead of performing a full wil6210 device reset. This requires the platform ability to initiate wakeup in case of RX data. To check that, a new platform API is added. In addition, add cfg80211 suspend/resume callbacks implementation. Signed-off-by: Maya Erez Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/wil6210/debugfs.c | 49 ++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'drivers/net/wireless/ath/wil6210/debugfs.c') diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 5b0f9fc66bb6..f82506d276d3 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -509,6 +509,10 @@ static ssize_t wil_read_file_ioblob(struct file *file, char __user *user_buf, void *buf; size_t ret; + if (test_bit(wil_status_suspending, wil_blob->wil->status) || + test_bit(wil_status_suspended, wil_blob->wil->status)) + return 0; + if (pos < 0) return -EINVAL; @@ -1600,6 +1604,49 @@ static const struct file_operations fops_fw_version = { .llseek = seq_lseek, }; +/*---------suspend_stats---------*/ +static ssize_t wil_write_suspend_stats(struct file *file, + const char __user *buf, + size_t len, loff_t *ppos) +{ + struct wil6210_priv *wil = file->private_data; + + memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats)); + + return len; +} + +static ssize_t wil_read_suspend_stats(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wil6210_priv *wil = file->private_data; + static char text[400]; + int n; + + n = snprintf(text, sizeof(text), + "Suspend statistics:\n" + "successful suspends:%ld failed suspends:%ld\n" + "successful resumes:%ld failed resumes:%ld\n" + "rejected by host:%ld rejected by device:%ld\n", + wil->suspend_stats.successful_suspends, + wil->suspend_stats.failed_suspends, + wil->suspend_stats.successful_resumes, + wil->suspend_stats.failed_resumes, + wil->suspend_stats.rejected_by_host, + wil->suspend_stats.rejected_by_device); + + n = min_t(int, n, sizeof(text)); + + return simple_read_from_buffer(user_buf, count, ppos, text, n); +} + +static const struct file_operations fops_suspend_stats = { + .read = wil_read_suspend_stats, + .write = wil_write_suspend_stats, + .open = simple_open, +}; + /*----------------*/ static void wil6210_debugfs_init_blobs(struct wil6210_priv *wil, struct dentry *dbg) @@ -1652,6 +1699,7 @@ static const struct { {"led_blink_time", 0644, &fops_led_blink_time}, {"fw_capabilities", 0444, &fops_fw_capabilities}, {"fw_version", 0444, &fops_fw_version}, + {"suspend_stats", 0644, &fops_suspend_stats}, }; static void wil6210_debugfs_init_files(struct wil6210_priv *wil, @@ -1698,6 +1746,7 @@ static const struct dbg_off dbg_wil_off[] = { WIL_FIELD(discovery_mode, 0644, doff_u8), WIL_FIELD(chip_revision, 0444, doff_u8), WIL_FIELD(abft_len, 0644, doff_u8), + WIL_FIELD(wakeup_trigger, 0644, doff_u8), {}, }; -- cgit v1.2.3