linux-toradex.git/drivers/mailbox/stm32-ipcc.c, branch v5.6 Linux kernel for Apalis and Colibri modules mailbox: stm32-ipcc: Update wakeup management 2019-12-01T05:08:59+00:00 Fabien Dessenne fabien.dessenne@st.com 2019-10-30T13:57:01+00:00 69269446ccbf2b44fd2595ecfa57e29fb656788d The wakeup specific IRQ management is no more needed to wake up the stm32 platform. A relationship has been established between the EXTI and the RX IRQ, just need to declare the EXTI interrupt instead of the IPCC RX IRQ. Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
The wakeup specific IRQ management is no more needed to wake up the
stm32 platform. A relationship has been established between the EXTI and
the RX IRQ, just need to declare the EXTI interrupt instead of the
IPCC RX IRQ.

Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: stm32_ipcc: add spinlock to fix channels concurrent access 2019-07-11T04:08:43+00:00 Arnaud Pouliquen arnaud.pouliquen@st.com 2019-05-22T08:25:35+00:00 dba9a3dfe912dc47c9dbc9ba1f5f65adbf9aea0f Add spinlock protection on IPCC register update to avoid race condition. Without this fix, stm32_ipcc_set_bits and stm32_ipcc_clr_bits can be called in parallel for different channels. This results in register corruptions. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
Add spinlock protection on IPCC register update to avoid race condition.
Without this fix, stm32_ipcc_set_bits and stm32_ipcc_clr_bits can be
called in parallel for different channels. This results in register
corruptions.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: stm32-ipcc: check invalid irq 2019-05-09T05:41:00+00:00 Fabien Dessenne fabien.dessenne@st.com 2019-04-24T15:51:05+00:00 68a1c8485cf83734d4da9d81cd3b5d2ae7c0339b On failure of_irq_get() returns a negative value or zero, which is not handled as an error in the existing implementation. Instead of using this API, use platform_get_irq() that returns exclusively a negative value on failure. Also, do not output an error log in case of defer probe error. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
On failure of_irq_get() returns a negative value or zero, which is
not handled as an error in the existing implementation.
Instead of using this API, use platform_get_irq() that returns
exclusively a negative value on failure.
Also, do not output an error log in case of defer probe error.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: stm32-ipcc: remove useless device_init_wakeup call 2019-03-07T02:33:59+00:00 Fabien Dessenne fabien.dessenne@st.com 2019-01-04T13:47:48+00:00 419d67f3ec0aa5e13a51eebab4dbcd71737c7dbc If the "wakeup-source" property does not exist there is no need to call device_init_wakeup("false") at probe. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
If the "wakeup-source" property does not exist there is no need to call
device_init_wakeup("false") at probe.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: stm32-ipcc: do not enable wakeup source by default 2019-03-07T02:33:52+00:00 Fabien Dessenne fabien.dessenne@st.com 2019-01-04T13:47:47+00:00 eac36c8651210df34d43331a6cc3fb3c2ee7abe2 By default do not enable the wakeup source. This lets the userspace application decide whether the wakeup source shall be enabled or not. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
By default do not enable the wakeup source.
This lets the userspace application decide whether the wakeup source
shall be enabled or not.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: stm32-ipcc: Use device-managed registration API 2018-12-21T22:49:26+00:00 Thierry Reding treding@nvidia.com 2018-12-20T17:20:01+00:00 368d7767b50154eb052938a13494879b00135ed3 Get rid of some boilerplate driver removal code by using the newly added device-managed registration API. Reviewed-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
Get rid of some boilerplate driver removal code by using the newly added
device-managed registration API.

Reviewed-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
mailbox: add STMicroelectronics STM32 IPCC driver 2018-06-06T16:51:59+00:00 Fabien Dessenne fabien.dessenne@st.com 2018-05-31T08:27:25+00:00 ffbded7dee975632f5ca56e565e68e84457f9213 The STMicroelectronics STM32 Inter-Processor Communication Controller (IPCC) is used for communicating data between two processors. It provides a non blocking signaling mechanism to post and retrieve communication data in an atomic way. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> 
The STMicroelectronics STM32 Inter-Processor Communication Controller
(IPCC) is used for communicating data between two processors.
It provides a non blocking signaling mechanism to post and retrieve
communication data in an atomic way.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>