diff options
| author |   Alexandre Torgue <alexandre.torgue@foss.st.com> | 2021-03-19 19:42:52 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-23 10:28:18 +0100 |
| commit | 3d530017bef1de7f7773eb9d3c65fbce924894a2 (patch) | |
| tree | c12890a358b28f72f910f1b7d01d98f2d66fa368 /drivers/tty/serial/stm32-usart.c | |
| parent | irqchip/stm32: add usart instances exti direct event support (diff) | |
| download | linux-dev-3d530017bef1de7f7773eb9d3c65fbce924894a2.tar.xz linux-dev-3d530017bef1de7f7773eb9d3c65fbce924894a2.zip | |
serial: stm32: update wakeup IRQ management
The wakeup specific IRQ management is no more needed to wake up the stm32
plaform. A relationship has been established between the EXTI and
the EVENT IRQ, just need to declare the EXTI interrupt instead of the
UART event IRQ.
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20210319184253.5841-5-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/stm32-usart.c')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.c | 32 |
1 files changed, 11 insertions, 21 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index cc054f07bd83..cba4f4ddf164 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -924,7 +924,7 @@ static void stm32_usart_set_termios(struct uart_port *port, } /* Configure wake up from low power on start bit detection */ - if (stm32_port->wakeirq > 0) { + if (stm32_port->wakeup_src) { cr3 &= ~USART_CR3_WUS_MASK; cr3 |= USART_CR3_WUS_START_BIT; } @@ -1044,11 +1044,8 @@ static int stm32_usart_init_port(struct stm32_port *stm32port, if (ret) return ret; - if (stm32port->info->cfg.has_wakeup) { - stm32port->wakeirq = platform_get_irq_optional(pdev, 1); - if (stm32port->wakeirq <= 0 && stm32port->wakeirq != -ENXIO) - return stm32port->wakeirq ? : -ENODEV; - } + stm32port->wakeup_src = stm32port->info->cfg.has_wakeup && + of_property_read_bool(pdev->dev.of_node, "wakeup-source"); stm32port->fifoen = stm32port->info->cfg.has_fifo; @@ -1283,17 +1280,11 @@ static int stm32_usart_serial_probe(struct platform_device *pdev) if (ret) return ret; - if (stm32port->wakeirq > 0) { - ret = device_init_wakeup(&pdev->dev, true); - if (ret) - goto err_uninit; - - ret = dev_pm_set_dedicated_wake_irq(&pdev->dev, - stm32port->wakeirq); + if (stm32port->wakeup_src) { + device_set_wakeup_capable(&pdev->dev, true); + ret = dev_pm_set_wake_irq(&pdev->dev, stm32port->port.irq); if (ret) goto err_nowup; - - device_set_wakeup_enable(&pdev->dev, false); } ret = stm32_usart_of_dma_rx_probe(stm32port, pdev); @@ -1343,14 +1334,13 @@ err_port: TX_BUF_L, stm32port->tx_buf, stm32port->tx_dma_buf); - if (stm32port->wakeirq > 0) + if (stm32port->wakeup_src) dev_pm_clear_wake_irq(&pdev->dev); err_nowup: - if (stm32port->wakeirq > 0) - device_init_wakeup(&pdev->dev, false); + if (stm32port->wakeup_src) + device_set_wakeup_capable(&pdev->dev, false); -err_uninit: stm32_usart_deinit_port(stm32port); return ret; @@ -1396,7 +1386,7 @@ static int stm32_usart_serial_remove(struct platform_device *pdev) TX_BUF_L, stm32_port->tx_buf, stm32_port->tx_dma_buf); - if (stm32_port->wakeirq > 0) { + if (stm32_port->wakeup_src) { dev_pm_clear_wake_irq(&pdev->dev); device_init_wakeup(&pdev->dev, false); } @@ -1512,7 +1502,7 @@ static void __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port, struct stm32_port *stm32_port = to_stm32_port(port); const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs; - if (stm32_port->wakeirq <= 0) + if (!stm32_port->wakeup_src) return; /* |