[03/16] wl1251: add sysfs interface for bluetooth coexistence mode configuration

Message ID	1382819655-30430-4-git-send-email-pali.rohar@gmail.com (mailing list archive)
State	Not Applicable, archived
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar@gmail.com> To: Luciano Coelho <luca@coelho.fi>, "John W. Linville" <linville@tuxdriver.com>, Johannes Berg <johannes@sipsolutions.net>, "David S. Miller" <davem@davemloft.net> Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, freemangordon@abv.bg, aaro.koskinen@iki.fi, pavel@ucw.cz, sre@ring0.de, joni.lapilainen@gmail.com, pali.rohar@gmail.com, David Gnedt <david.gnedt@davizone.at> Subject: [PATCH 03/16] wl1251: add sysfs interface for bluetooth coexistence mode configuration Date: Sat, 26 Oct 2013 22:34:02 +0200 Message-Id: <1382819655-30430-4-git-send-email-pali.rohar@gmail.com> In-Reply-To: <1382819655-30430-1-git-send-email-pali.rohar@gmail.com> References: <1382819655-30430-1-git-send-email-pali.rohar@gmail.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/wireless/ti/wl1251/acx.c b/drivers/net/wireless/ti/wl1251/acx.c index db6430c..cce50e2 100644 --- a/drivers/net/wireless/ti/wl1251/acx.c +++ b/drivers/net/wireless/ti/wl1251/acx.c @@ -581,7 +581,7 @@ out: return ret; } -int wl1251_acx_sg_enable(struct wl1251 *wl) +int wl1251_acx_sg_enable(struct wl1251 *wl, u8 mode) { struct acx_bt_wlan_coex *pta; int ret; @@ -594,7 +594,7 @@ int wl1251_acx_sg_enable(struct wl1251 *wl) goto out; } - pta->enable = SG_ENABLE; + pta->enable = mode; ret = wl1251_cmd_configure(wl, ACX_SG_ENABLE, pta, sizeof(*pta)); if (ret < 0) { @@ -607,7 +607,7 @@ out: return ret; } -int wl1251_acx_sg_cfg(struct wl1251 *wl) +int wl1251_acx_sg_cfg(struct wl1251 *wl, u16 wake_up_beacon) { struct acx_bt_wlan_coex_param *param; int ret; @@ -632,7 +632,7 @@ int wl1251_acx_sg_cfg(struct wl1251 *wl) param->wlan_cycle_fast = PTA_CYCLE_TIME_FAST_DEF; param->bt_anti_starvation_period = PTA_ANTI_STARVE_PERIOD_DEF; param->next_bt_lp_packet = PTA_TIMEOUT_NEXT_BT_LP_PACKET_DEF; - param->wake_up_beacon = PTA_TIME_BEFORE_BEACON_DEF; + param->wake_up_beacon = wake_up_beacon; param->hp_dm_max_guard_time = PTA_HPDM_MAX_TIME_DEF; param->next_wlan_packet = PTA_TIME_OUT_NEXT_WLAN_DEF; param->antenna_type = PTA_ANTENNA_TYPE_DEF; @@ -661,6 +661,41 @@ out: return ret; } +int wl1251_acx_sg_configure(struct wl1251 *wl, bool force) +{ + int ret; + + if (wl->state == WL1251_STATE_OFF && !force) + return 0; + + switch (wl->bt_coex_mode) { + case WL1251_BT_COEX_OFF: + ret = wl1251_acx_sg_enable(wl, SG_DISABLE); + if (ret) + break; + ret = wl1251_acx_sg_cfg(wl, 0); + break; + case WL1251_BT_COEX_ENABLE: + ret = wl1251_acx_sg_enable(wl, SG_ENABLE); + if (ret) + break; + ret = wl1251_acx_sg_cfg(wl, PTA_TIME_BEFORE_BEACON_DEF); + break; + case WL1251_BT_COEX_MONOAUDIO: + ret = wl1251_acx_sg_enable(wl, SG_ENABLE); + if (ret) + break; + ret = wl1251_acx_sg_cfg(wl, PTA_TIME_BEFORE_BEACON_MONO_AUDIO); + break; + default: + wl1251_error("Invalid BT co-ex mode!"); + ret = -EOPNOTSUPP; + break; + } + + return ret; +} + int wl1251_acx_cca_threshold(struct wl1251 *wl) { struct acx_energy_detection *detection; diff --git a/drivers/net/wireless/ti/wl1251/acx.h b/drivers/net/wireless/ti/wl1251/acx.h index c2ba100..99ea80e 100644 --- a/drivers/net/wireless/ti/wl1251/acx.h +++ b/drivers/net/wireless/ti/wl1251/acx.h @@ -558,7 +558,8 @@ struct acx_bt_wlan_coex { #define PTA_ANTI_STARVE_PERIOD_DEF (500) #define PTA_ANTI_STARVE_NUM_CYCLE_DEF (4) #define PTA_ALLOW_PA_SD_DEF (1) -#define PTA_TIME_BEFORE_BEACON_DEF (6300) +#define PTA_TIME_BEFORE_BEACON_DEF (500) +#define PTA_TIME_BEFORE_BEACON_MONO_AUDIO (6300) #define PTA_HPDM_MAX_TIME_DEF (1600) #define PTA_TIME_OUT_NEXT_WLAN_DEF (2550) #define PTA_AUTO_MODE_NO_CTS_DEF (0) @@ -1455,8 +1456,9 @@ int wl1251_acx_rts_threshold(struct wl1251 *wl, u16 rts_threshold); int wl1251_acx_beacon_filter_opt(struct wl1251 *wl, bool enable_filter); int wl1251_acx_beacon_filter_table(struct wl1251 *wl); int wl1251_acx_conn_monit_params(struct wl1251 *wl); -int wl1251_acx_sg_enable(struct wl1251 *wl); -int wl1251_acx_sg_cfg(struct wl1251 *wl); +int wl1251_acx_sg_enable(struct wl1251 *wl, u8 mode); +int wl1251_acx_sg_cfg(struct wl1251 *wl, u16 wake_up_beacon); +int wl1251_acx_sg_configure(struct wl1251 *wl, bool force); int wl1251_acx_cca_threshold(struct wl1251 *wl); int wl1251_acx_bcn_dtim_options(struct wl1251 *wl); int wl1251_acx_aid(struct wl1251 *wl, u16 aid); diff --git a/drivers/net/wireless/ti/wl1251/init.c b/drivers/net/wireless/ti/wl1251/init.c index 89b43d3..a6ad223 100644 --- a/drivers/net/wireless/ti/wl1251/init.c +++ b/drivers/net/wireless/ti/wl1251/init.c @@ -162,11 +162,7 @@ int wl1251_hw_init_pta(struct wl1251 *wl) { int ret; - ret = wl1251_acx_sg_enable(wl); - if (ret < 0) - return ret; - - ret = wl1251_acx_sg_cfg(wl); + ret = wl1251_acx_sg_configure(wl, true); if (ret < 0) return ret; diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c index 4d89ac8..ad2fd18 100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -27,6 +27,7 @@ #include <linux/crc32.h> #include <linux/etherdevice.h> #include <linux/vmalloc.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include "wl1251.h" @@ -1256,6 +1257,94 @@ static const struct ieee80211_ops wl1251_ops = { .get_survey = wl1251_op_get_survey, }; +static ssize_t wl1251_sysfs_show_bt_coex_mode(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct wl1251 *wl = dev_get_drvdata(dev); + ssize_t len; + + /* FIXME: what's the maximum length of buf? page size?*/ + len = 500; + + mutex_lock(&wl->mutex); + len = snprintf(buf, len, "%d\n\n%d - off\n%d - on\n%d - monoaudio\n", + wl->bt_coex_mode, + WL1251_BT_COEX_OFF, + WL1251_BT_COEX_ENABLE, + WL1251_BT_COEX_MONOAUDIO); + mutex_unlock(&wl->mutex); + + return len; + +} + +static ssize_t wl1251_sysfs_store_bt_coex_mode(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct wl1251 *wl = dev_get_drvdata(dev); + unsigned long res; + int ret; + + ret = strict_strtoul(buf, 10, &res); + + if (ret < 0) { + wl1251_warning("incorrect value written to bt_coex_mode"); + return count; + } + + mutex_lock(&wl->mutex); + + if (res == wl->bt_coex_mode) + goto out; + + switch (res) { + case WL1251_BT_COEX_OFF: + case WL1251_BT_COEX_ENABLE: + case WL1251_BT_COEX_MONOAUDIO: + wl->bt_coex_mode = res; + break; + default: + wl1251_warning("incorrect value written to bt_coex_mode"); + goto out; + } + + if (wl->state == WL1251_STATE_OFF) + goto out; + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + wl1251_acx_sg_configure(wl, false); + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + return count; +} + +static DEVICE_ATTR(bt_coex_mode, S_IRUGO | S_IWUSR, + wl1251_sysfs_show_bt_coex_mode, + wl1251_sysfs_store_bt_coex_mode); + +static void wl1251_device_release(struct device *dev) +{ + +} + +static struct platform_device wl1251_device = { + /* FIXME: use wl12xx name to not break the user space */ + .name = "wl12xx", + .id = -1, + + /* device model insists to have a release function */ + .dev = { + .release = wl1251_device_release, + }, +}; + static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) { unsigned long timeout; @@ -1368,6 +1457,22 @@ int wl1251_init_ieee80211(struct wl1251 *wl) if (ret) goto out; + /* Register platform device */ + ret = platform_device_register(&wl1251_device); + if (ret) { + wl1251_error("couldn't register platform device"); + goto out; + } + dev_set_drvdata(&wl1251_device.dev, wl); + + + /* Create sysfs file to control bt coex state */ + ret = device_create_file(&wl1251_device.dev, &dev_attr_bt_coex_mode); + if (ret < 0) { + wl1251_error("failed to create sysfs file bt_coex_mode"); + goto out; + } + wl1251_debugfs_init(wl); wl1251_notice("initialized"); @@ -1420,6 +1525,7 @@ struct ieee80211_hw *wl1251_alloc_hw(void) wl->beacon_int = WL1251_DEFAULT_BEACON_INT; wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; wl->vif = NULL; + wl->bt_coex_mode = WL1251_BT_COEX_OFF; for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) wl->tx_frames[i] = NULL; @@ -1459,6 +1565,8 @@ int wl1251_free_hw(struct wl1251 *wl) wl1251_debugfs_exit(wl); + platform_device_unregister(&wl1251_device); + kfree(wl->target_mem_map); kfree(wl->data_path); vfree(wl->fw); diff --git a/drivers/net/wireless/ti/wl1251/wl1251.h b/drivers/net/wireless/ti/wl1251/wl1251.h index fd02060..724c9f9 100644 --- a/drivers/net/wireless/ti/wl1251/wl1251.h +++ b/drivers/net/wireless/ti/wl1251/wl1251.h @@ -257,6 +257,12 @@ struct wl1251_debugfs { struct dentry *excessive_retries; }; +enum wl1251_bt_coex_mode { + WL1251_BT_COEX_OFF, + WL1251_BT_COEX_ENABLE, + WL1251_BT_COEX_MONOAUDIO +}; + struct wl1251_if_operations { void (*read)(struct wl1251 *wl, int addr, void *buf, size_t len); void (*write)(struct wl1251 *wl, int addr, void *buf, size_t len); @@ -386,6 +392,8 @@ struct wl1251 { struct ieee80211_vif *vif; + enum wl1251_bt_coex_mode bt_coex_mode; + u32 chip_id; char fw_ver[21];

[03/16] wl1251: add sysfs interface for bluetooth coexistence mode configuration

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