greybus-dev July 2019

greybus-dev@lists.linaro.org

8 participants
4 discussions

Greybus For IoT : Click Board Support on Beaglebone Boards

by Vaishnav MA

Hi, I have been working on the Google Summer of Code Project : Click Board Support through Greybus <https://summerofcode.withgoogle.com/projects/#5996499987595264> , which aims to bring in support for MikroElektronika Click Boards <https://www.mikroe.com/click> through Greybus Simulator <https://github.com/projectara/gbsim> , I was able to set up and bring in support for some of the Click boards through Greybus Simulator and passing the properties related to the Click Board device driver manipulating the product string and vendor string properties in the manifest, however I am stuck now as some of the click boards require additional platform data(like Reset Pin, Interrupts..etc) passed to the spi_new_device/i2c_new_device calls, does Greybus allow passing of these parameters to the driver, if so can someone guide me with the documentation for the same or point me a suitable example so that I can implement the solution in the project. If greybus doesn't allow for passing these parameters what would be the ideal way to bring in support for these click boards(which mostly uses SPI/I2C interfaces) through the greybus subsystem?. Thanks and Regards Vaishnav M A GSoC '19 Student Under Beagleboard.org

4 years, 8 months

[PATCH] staging: greybus: add logging statement when kfifo_alloc fails

by Keyur Patel

Added missing logging statement when kfifo_alloc fails, to improve debugging. Signed-off-by: Keyur Patel <iamkeyur96(a)gmail.com> --- drivers/staging/greybus/uart.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index b3bffe91ae99..86a395ae177d 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -856,8 +856,10 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev, retval = kfifo_alloc(&gb_tty->write_fifo, GB_UART_WRITE_FIFO_SIZE, GFP_KERNEL); - if (retval) + if (retval) { + pr_err("kfifo_alloc failed\n"); goto exit_buf_free; + } gb_tty->credits = GB_UART_FIRMWARE_CREDITS; init_completion(&gb_tty->credits_complete); -- 2.22.0

4 years, 9 months

[PATCH] staging: greybus: Replace function gb_i2c_device_setup()

by Nishka Dasgupta

Remove function gb_i2c_device_setup as all it does is call gb_i2c_functionality_operation. Rename gb_i2c_functionality_operation to gb_i2c_device_setup to maintain compatibility with call sites. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux(a)gmail.com> --- drivers/staging/greybus/i2c.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/staging/greybus/i2c.c b/drivers/staging/greybus/i2c.c index 7bb85a75d3b1..b2522043a1a4 100644 --- a/drivers/staging/greybus/i2c.c +++ b/drivers/staging/greybus/i2c.c @@ -31,7 +31,14 @@ static u32 gb_i2c_functionality_map(u32 gb_i2c_functionality) return gb_i2c_functionality; /* All bits the same for now */ } -static int gb_i2c_functionality_operation(struct gb_i2c_device *gb_i2c_dev) +/* + * Do initial setup of the i2c device. This includes verifying we + * can support it (based on the protocol version it advertises). + * If that's OK, we get and cached its functionality bits. + * + * Note: gb_i2c_dev->connection is assumed to have been valid. + */ +static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev) { struct gb_i2c_functionality_response response; u32 functionality; @@ -235,19 +242,6 @@ static const struct i2c_algorithm gb_i2c_algorithm = { .functionality = gb_i2c_functionality, }; -/* - * Do initial setup of the i2c device. This includes verifying we - * can support it (based on the protocol version it advertises). - * If that's OK, we get and cached its functionality bits. - * - * Note: gb_i2c_dev->connection is assumed to have been valid. - */ -static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev) -{ - /* Assume the functionality never changes, just get it once */ - return gb_i2c_functionality_operation(gb_i2c_dev); -} - static int gb_i2c_probe(struct gbphy_device *gbphy_dev, const struct gbphy_device_id *id) { -- 2.19.1

4 years, 9 months

[PATCH] staging: greybus: remove redundant assignment to variable is_empty

by Colin King

From: Colin Ian King <colin.king(a)canonical.com> The variable is_empty is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- drivers/staging/greybus/audio_manager.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/greybus/audio_manager.c b/drivers/staging/greybus/audio_manager.c index c2a4af4c1d06..9b19ea9d3fa1 100644 --- a/drivers/staging/greybus/audio_manager.c +++ b/drivers/staging/greybus/audio_manager.c @@ -86,7 +86,7 @@ EXPORT_SYMBOL_GPL(gb_audio_manager_remove); void gb_audio_manager_remove_all(void) { struct gb_audio_manager_module *module, *next; - int is_empty = 1; + int is_empty; down_write(&modules_rwsem); -- 2.20.1

4 years, 9 months

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greybus-dev July 2019