diff options
Diffstat (limited to 'drivers/spi/spi-stm32.c')
| -rw-r--r-- | drivers/spi/spi-stm32.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index e61302ef3c21..da3517d7102d 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -1057,7 +1057,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id) mask |= STM32H7_SPI_SR_TXP | STM32H7_SPI_SR_RXP; if (!(sr & mask)) { - dev_warn(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n", + dev_vdbg(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n", sr, ier); spin_unlock_irqrestore(&spi->lock, flags); return IRQ_NONE; @@ -1118,6 +1118,21 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id) return IRQ_HANDLED; } +static int stm32_spi_optimize_message(struct spi_message *msg) +{ + struct spi_controller *ctrl = msg->spi->controller; + struct stm32_spi *spi = spi_controller_get_devdata(ctrl); + + /* On STM32H7, messages should not exceed a maximum size set + * later via the set_number_of_data function. In order to + * ensure that, split large messages into several messages + */ + if (spi->cfg->set_number_of_data) + return spi_split_transfers_maxwords(ctrl, msg, spi->t_size_max); + + return 0; +} + /** * stm32_spi_prepare_msg - set up the controller to transfer a single message * @ctrl: controller interface @@ -1163,20 +1178,6 @@ static int stm32_spi_prepare_msg(struct spi_controller *ctrl, !!(spi_dev->mode & SPI_LSB_FIRST), !!(spi_dev->mode & SPI_CS_HIGH)); - /* On STM32H7, messages should not exceed a maximum size setted - * afterward via the set_number_of_data function. In order to - * ensure that, split large messages into several messages - */ - if (spi->cfg->set_number_of_data) { - int ret; - - ret = spi_split_transfers_maxwords(ctrl, msg, - spi->t_size_max, - GFP_KERNEL | GFP_DMA); - if (ret) - return ret; - } - spin_lock_irqsave(&spi->lock, flags); /* CPOL, CPHA and LSB FIRST bits have common register */ @@ -2043,6 +2044,7 @@ static const struct stm32_spi_cfg stm32mp25_spi_cfg = { .baud_rate_div_max = STM32H7_SPI_MBR_DIV_MAX, .has_fifo = true, .prevent_dma_burst = true, + .has_device_mode = true, }; static const struct of_device_id stm32_spi_of_match[] = { @@ -2182,6 +2184,7 @@ static int stm32_spi_probe(struct platform_device *pdev) ctrl->max_speed_hz = spi->clk_rate / spi->cfg->baud_rate_div_min; ctrl->min_speed_hz = spi->clk_rate / spi->cfg->baud_rate_div_max; ctrl->use_gpio_descriptors = true; + ctrl->optimize_message = stm32_spi_optimize_message; ctrl->prepare_message = stm32_spi_prepare_msg; ctrl->transfer_one = stm32_spi_transfer_one; ctrl->unprepare_message = stm32_spi_unprepare_msg; @@ -2353,7 +2356,7 @@ static const struct dev_pm_ops stm32_spi_pm_ops = { static struct platform_driver stm32_spi_driver = { .probe = stm32_spi_probe, - .remove_new = stm32_spi_remove, + .remove = stm32_spi_remove, .driver = { .name = DRIVER_NAME, .pm = &stm32_spi_pm_ops, |