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path: root/drivers/mailbox/stm32-ipcc.c
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2019-11-30mailbox: stm32-ipcc: Update wakeup managementFabien Dessenne
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>
2019-07-10mailbox: stm32_ipcc: add spinlock to fix channels concurrent accessArnaud Pouliquen
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>
2019-05-09mailbox: stm32-ipcc: check invalid irqFabien Dessenne
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>
2019-03-06mailbox: stm32-ipcc: remove useless device_init_wakeup callFabien Dessenne
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>
2019-03-06mailbox: stm32-ipcc: do not enable wakeup source by defaultFabien Dessenne
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>
2018-12-21mailbox: stm32-ipcc: Use device-managed registration APIThierry Reding
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>
2018-06-06mailbox: add STMicroelectronics STM32 IPCC driverFabien Dessenne
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>