| Message ID | 20241007131316.626690-3-neeraj.sanjaykale@nxp.com |
|---|---|
| State | Accepted |
| Commit | 039468a219126b10e988bf67f73d8a6687cba7dc |
| Headers | show |
| Series | Bluetooth: btnxpuart: Add GPIO mechanism to | expand |
Hi Neeraj, kernel test robot noticed the following build errors: [auto build test ERROR on bluetooth/master] [also build test ERROR on bluetooth-next/master robh/for-next linus/master v6.12-rc2 next-20241004] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Neeraj-Sanjay-Kale/dt-bindings-net-bluetooth-nxp-Add-support-for-power-save-feature-using-GPIO/20241007-211315 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master patch link: https://lore.kernel.org/r/20241007131316.626690-3-neeraj.sanjaykale%40nxp.com patch subject: [PATCH v4 2/2] Bluetooth: btnxpuart: Add GPIO support to power save feature config: x86_64-buildonly-randconfig-003-20241008 (https://download.01.org/0day-ci/archive/20241008/202410081424.BaGORAHw-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241008/202410081424.BaGORAHw-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410081424.BaGORAHw-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/bluetooth/btnxpuart.c:445:7: error: expected ')' 445 | PTR_ERR(psdata->h2c_ps_gpio)); | ^ drivers/bluetooth/btnxpuart.c:444:3: note: to match this '(' 444 | bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" | ^ include/net/bluetooth/bluetooth.h:278:2: note: expanded from macro 'bt_dev_err' 278 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) | ^ include/net/bluetooth/bluetooth.h:263:32: note: expanded from macro 'BT_ERR' 263 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | ^ 1 error generated. vim +445 drivers/bluetooth/btnxpuart.c 434 435 static int ps_setup(struct hci_dev *hdev) 436 { 437 struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); 438 struct serdev_device *serdev = nxpdev->serdev; 439 struct ps_data *psdata = &nxpdev->psdata; 440 441 psdata->h2c_ps_gpio = devm_gpiod_get_optional(&serdev->dev, "device-wakeup", 442 GPIOD_OUT_LOW); 443 if (IS_ERR(psdata->h2c_ps_gpio)) { 444 bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" > 445 PTR_ERR(psdata->h2c_ps_gpio)); 446 return PTR_ERR(psdata->h2c_ps_gpio); 447 } 448 449 if (!psdata->h2c_ps_gpio) 450 psdata->h2c_wakeup_gpio = 0xff; 451 452 psdata->hdev = hdev; 453 INIT_WORK(&psdata->work, ps_work_func); 454 mutex_init(&psdata->ps_lock); 455 timer_setup(&psdata->ps_timer, ps_timeout_func, 0); 456 457 return 0; 458 } 459
Hi Neeraj, kernel test robot noticed the following build errors: [auto build test ERROR on bluetooth/master] [also build test ERROR on bluetooth-next/master robh/for-next linus/master v6.12-rc2 next-20241004] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Neeraj-Sanjay-Kale/dt-bindings-net-bluetooth-nxp-Add-support-for-power-save-feature-using-GPIO/20241007-211315 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master patch link: https://lore.kernel.org/r/20241007131316.626690-3-neeraj.sanjaykale%40nxp.com patch subject: [PATCH v4 2/2] Bluetooth: btnxpuart: Add GPIO support to power save feature config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20241008/202410081516.Mt35mvJk-lkp@intel.com/config) compiler: m68k-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241008/202410081516.Mt35mvJk-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410081516.Mt35mvJk-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from drivers/bluetooth/btnxpuart.c:21: drivers/bluetooth/btnxpuart.c: In function 'ps_setup': >> drivers/bluetooth/btnxpuart.c:445:28: error: expected ')' before 'PTR_ERR' 445 | PTR_ERR(psdata->h2c_ps_gpio)); | ^~~~~~~ include/net/bluetooth/bluetooth.h:263:40: note: in definition of macro 'BT_ERR' 263 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | ^~~ drivers/bluetooth/btnxpuart.c:444:17: note: in expansion of macro 'bt_dev_err' 444 | bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" | ^~~~~~~~~~ include/net/bluetooth/bluetooth.h:263:39: note: to match this '(' 263 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | ^ include/net/bluetooth/bluetooth.h:278:9: note: in expansion of macro 'BT_ERR' 278 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) | ^~~~~~ drivers/bluetooth/btnxpuart.c:444:17: note: in expansion of macro 'bt_dev_err' 444 | bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" | ^~~~~~~~~~ >> include/net/bluetooth/bluetooth.h:278:16: warning: format '%s' expects a matching 'char *' argument [-Wformat=] 278 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) | ^~~~~~ include/net/bluetooth/bluetooth.h:263:40: note: in definition of macro 'BT_ERR' 263 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | ^~~ drivers/bluetooth/btnxpuart.c:444:17: note: in expansion of macro 'bt_dev_err' 444 | bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" | ^~~~~~~~~~ include/net/bluetooth/bluetooth.h:278:18: note: format string is defined here 278 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) | ~^ | | | char * >> include/net/bluetooth/bluetooth.h:278:16: warning: format '%ld' expects a matching 'long int' argument [-Wformat=] 278 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) | ^~~~~~ include/net/bluetooth/bluetooth.h:263:40: note: in definition of macro 'BT_ERR' 263 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | ^~~ drivers/bluetooth/btnxpuart.c:444:17: note: in expansion of macro 'bt_dev_err' 444 | bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" | ^~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [m]: - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m] vim +445 drivers/bluetooth/btnxpuart.c 434 435 static int ps_setup(struct hci_dev *hdev) 436 { 437 struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); 438 struct serdev_device *serdev = nxpdev->serdev; 439 struct ps_data *psdata = &nxpdev->psdata; 440 441 psdata->h2c_ps_gpio = devm_gpiod_get_optional(&serdev->dev, "device-wakeup", 442 GPIOD_OUT_LOW); 443 if (IS_ERR(psdata->h2c_ps_gpio)) { 444 bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" > 445 PTR_ERR(psdata->h2c_ps_gpio)); 446 return PTR_ERR(psdata->h2c_ps_gpio); 447 } 448 449 if (!psdata->h2c_ps_gpio) 450 psdata->h2c_wakeup_gpio = 0xff; 451 452 psdata->hdev = hdev; 453 INIT_WORK(&psdata->work, ps_work_func); 454 mutex_init(&psdata->ps_lock); 455 timer_setup(&psdata->ps_timer, ps_timeout_func, 0); 456 457 return 0; 458 } 459
diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 2b8a07c745c9..83665f0b96c5 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -16,6 +16,7 @@ #include <linux/crc8.h> #include <linux/crc32.h> #include <linux/string_helpers.h> +#include <linux/gpio/consumer.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> @@ -82,6 +83,7 @@ #define WAKEUP_METHOD_BREAK 1 #define WAKEUP_METHOD_EXT_BREAK 2 #define WAKEUP_METHOD_RTS 3 +#define WAKEUP_METHOD_GPIO 4 #define WAKEUP_METHOD_INVALID 0xff /* power save mode status */ @@ -135,6 +137,7 @@ struct ps_data { bool driver_sent_cmd; u16 h2c_ps_interval; u16 c2h_ps_interval; + struct gpio_desc *h2c_ps_gpio; struct hci_dev *hdev; struct work_struct work; struct timer_list ps_timer; @@ -365,7 +368,7 @@ static void ps_control(struct hci_dev *hdev, u8 ps_state) { struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); struct ps_data *psdata = &nxpdev->psdata; - int status; + int status = 0; if (psdata->ps_state == ps_state || !test_bit(BTNXPUART_SERDEV_OPEN, &nxpdev->tx_state)) @@ -373,6 +376,14 @@ static void ps_control(struct hci_dev *hdev, u8 ps_state) mutex_lock(&psdata->ps_lock); switch (psdata->cur_h2c_wakeupmode) { + case WAKEUP_METHOD_GPIO: + if (ps_state == PS_STATE_AWAKE) + gpiod_set_value_cansleep(psdata->h2c_ps_gpio, 0); + else + gpiod_set_value_cansleep(psdata->h2c_ps_gpio, 1); + bt_dev_dbg(hdev, "Set h2c_ps_gpio: %s", + str_high_low(ps_state == PS_STATE_SLEEP)); + break; case WAKEUP_METHOD_DTR: if (ps_state == PS_STATE_AWAKE) status = serdev_device_set_tiocm(nxpdev->serdev, TIOCM_DTR, 0); @@ -422,15 +433,29 @@ static void ps_timeout_func(struct timer_list *t) } } -static void ps_setup(struct hci_dev *hdev) +static int ps_setup(struct hci_dev *hdev) { struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); + struct serdev_device *serdev = nxpdev->serdev; struct ps_data *psdata = &nxpdev->psdata; + psdata->h2c_ps_gpio = devm_gpiod_get_optional(&serdev->dev, "device-wakeup", + GPIOD_OUT_LOW); + if (IS_ERR(psdata->h2c_ps_gpio)) { + bt_dev_err(hdev, "Error fetching device-wakeup-gpios: %ld" + PTR_ERR(psdata->h2c_ps_gpio)); + return PTR_ERR(psdata->h2c_ps_gpio); + } + + if (!psdata->h2c_ps_gpio) + psdata->h2c_wakeup_gpio = 0xff; + psdata->hdev = hdev; INIT_WORK(&psdata->work, ps_work_func); mutex_init(&psdata->ps_lock); timer_setup(&psdata->ps_timer, ps_timeout_func, 0); + + return 0; } static bool ps_wakeup(struct btnxpuart_dev *nxpdev) @@ -516,6 +541,9 @@ static int send_wakeup_method_cmd(struct hci_dev *hdev, void *data) pcmd.c2h_wakeupmode = psdata->c2h_wakeupmode; pcmd.c2h_wakeup_gpio = psdata->c2h_wakeup_gpio; switch (psdata->h2c_wakeupmode) { + case WAKEUP_METHOD_GPIO: + pcmd.h2c_wakeupmode = BT_CTRL_WAKEUP_METHOD_GPIO; + break; case WAKEUP_METHOD_DTR: pcmd.h2c_wakeupmode = BT_CTRL_WAKEUP_METHOD_DSR; break; @@ -550,6 +578,7 @@ static void ps_init(struct hci_dev *hdev) { struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); struct ps_data *psdata = &nxpdev->psdata; + u8 default_h2c_wakeup_mode = DEFAULT_H2C_WAKEUP_MODE; serdev_device_set_tiocm(nxpdev->serdev, 0, TIOCM_RTS); usleep_range(5000, 10000); @@ -561,8 +590,17 @@ static void ps_init(struct hci_dev *hdev) psdata->c2h_wakeup_gpio = 0xff; psdata->cur_h2c_wakeupmode = WAKEUP_METHOD_INVALID; + if (psdata->h2c_ps_gpio) + default_h2c_wakeup_mode = WAKEUP_METHOD_GPIO; + psdata->h2c_ps_interval = PS_DEFAULT_TIMEOUT_PERIOD_MS; - switch (DEFAULT_H2C_WAKEUP_MODE) { + + switch (default_h2c_wakeup_mode) { + case WAKEUP_METHOD_GPIO: + psdata->h2c_wakeupmode = WAKEUP_METHOD_GPIO; + gpiod_set_value_cansleep(psdata->h2c_ps_gpio, 0); + usleep_range(5000, 10000); + break; case WAKEUP_METHOD_DTR: psdata->h2c_wakeupmode = WAKEUP_METHOD_DTR; serdev_device_set_tiocm(nxpdev->serdev, 0, TIOCM_DTR); @@ -1279,6 +1317,9 @@ static int nxp_enqueue(struct hci_dev *hdev, struct sk_buff *skb) psdata->c2h_wakeup_gpio = wakeup_parm.c2h_wakeup_gpio; psdata->h2c_wakeup_gpio = wakeup_parm.h2c_wakeup_gpio; switch (wakeup_parm.h2c_wakeupmode) { + case BT_CTRL_WAKEUP_METHOD_GPIO: + psdata->h2c_wakeupmode = WAKEUP_METHOD_GPIO; + break; case BT_CTRL_WAKEUP_METHOD_DSR: psdata->h2c_wakeupmode = WAKEUP_METHOD_DTR; break; @@ -1509,13 +1550,17 @@ static int nxp_serdev_probe(struct serdev_device *serdev) if (hci_register_dev(hdev) < 0) { dev_err(&serdev->dev, "Can't register HCI device\n"); - hci_free_dev(hdev); - return -ENODEV; + goto probe_fail; } - ps_setup(hdev); + if (ps_setup(hdev)) + goto probe_fail; return 0; + +probe_fail: + hci_free_dev(hdev); + return -ENODEV; } static void nxp_serdev_remove(struct serdev_device *serdev)
This adds support for driving the chip into sleep or wakeup with a GPIO. If the device tree property device-wakeup-gpios is defined, the driver utilizes this GPIO for controlling the chip's power save state, else it uses the default UART-break method. Signed-off-by: Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com> --- v3: Remove GPIO toggling in ps_init(). (Shenwei Wang) v4: Use devm_gpiod_get_optional() instead of devm_gpiod_get() --- drivers/bluetooth/btnxpuart.c | 57 +++++++++++++++++++++++++++++++---- 1 file changed, 51 insertions(+), 6 deletions(-)