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path: root/drivers/mailbox/stm32-ipcc.c
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* mailbox: stm32-ipcc: Make use of the helper function ↵Cai Huoqing2021-10-161-3/+1
| | | | | | | | | | | devm_platform_ioremap_resource() Use the devm_platform_ioremap_resource() helper instead of calling platform_get_resource() and devm_ioremap_resource() separately Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: stm32-ipcc: cast void pointers to unsigned longMartin Kaiser2020-12-011-6/+6
| | | | | | | | | | | | | | | | | | | | Now that the driver can be enabled by COMPILE_TEST, we see warnings on 64bit platforms when void pointers are cast to unsigned int (and vice versa). warning: cast to smaller integer type 'unsigned int' from 'void *' unsigned int chan = (unsigned int)link->con_priv; ... warning: cast to 'void *' from smaller integer type 'unsigned int' ipcc->controller.chans[i].con_priv = (void *)i; Update these casts to use unsigned long variables, which are the same size as pointers on all platforms. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: stm32-ipcc: remove duplicate error messageMartin Kaiser2020-12-011-3/+0
| | | | | | | | | platform_get_irq_byname already prints an error message if the requested irq was not found. Don't print another message in the driver. Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: stm32-ipcc: Update wakeup managementFabien Dessenne2019-11-301-29/+7
| | | | | | | | | | | 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 accessArnaud Pouliquen2019-07-101-10/+27
| | | | | | | | | | | 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 irqFabien Dessenne2019-05-091-5/+8
| | | | | | | | | | | 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 callFabien Dessenne2019-03-061-2/+0
| | | | | | | | 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 defaultFabien Dessenne2019-03-061-1/+1
| | | | | | | | | 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 APIThierry Reding2018-12-211-3/+1
| | | | | | | | | 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 driverFabien Dessenne2018-06-061-0/+402
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>