From 8c33ebfeeb597ea953df93f84ea25482d29c664f Mon Sep 17 00:00:00 2001 From: Mason Zhang Date: Wed, 4 Aug 2021 21:37:17 +0800 Subject: [PATCH] spi: move cs spi_delay to spi_device As we know, spi core layer has removed spi_set_cs_timing() API. So this patch moved spi_delay for cs_timing from spi_controller to spi_device, because cs timing should be set by spi_device but not controller. Signed-off-by: Mason Zhang Link: https://lore.kernel.org/r/20210804133716.32040-1-Mason.Zhang@mediatek.com Signed-off-by: Mark Brown --- drivers/spi/spi.c | 6 +++--- include/linux/spi/spi.h | 20 +++++++++----------- 2 files changed, 12 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c991811..5d68e6c 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -842,9 +842,9 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force) if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) || !spi->controller->set_cs_timing) { if (activate) - spi_delay_exec(&spi->controller->cs_setup, NULL); + spi_delay_exec(&spi->cs_setup, NULL); else - spi_delay_exec(&spi->controller->cs_hold, NULL); + spi_delay_exec(&spi->cs_hold, NULL); } if (spi->mode & SPI_CS_HIGH) @@ -887,7 +887,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force) if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) || !spi->controller->set_cs_timing) { if (!activate) - spi_delay_exec(&spi->controller->cs_inactive, NULL); + spi_delay_exec(&spi->cs_inactive, NULL); } } diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 3a81b5d..1efe2e0 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -147,7 +147,11 @@ extern int spi_delay_exec(struct spi_delay *_delay, struct spi_transfer *xfer); * not using a GPIO line) * @word_delay: delay to be inserted between consecutive * words of a transfer - * + * @cs_setup: delay to be introduced by the controller after CS is asserted + * @cs_hold: delay to be introduced by the controller before CS is deasserted + * @cs_inactive: delay to be introduced by the controller after CS is + * deasserted. If @cs_change_delay is used from @spi_transfer, then the + * two delays will be added up. * @statistics: statistics for the spi_device * * A @spi_device is used to interchange data between an SPI slave @@ -188,6 +192,10 @@ struct spi_device { int cs_gpio; /* LEGACY: chip select gpio */ struct gpio_desc *cs_gpiod; /* chip select gpio desc */ struct spi_delay word_delay; /* inter-word delay */ + /* CS delays */ + struct spi_delay cs_setup; + struct spi_delay cs_hold; + struct spi_delay cs_inactive; /* the statistics */ struct spi_statistics statistics; @@ -413,11 +421,6 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch * controller has native support for memory like operations. * @unprepare_message: undo any work done by prepare_message(). * @slave_abort: abort the ongoing transfer request on an SPI slave controller - * @cs_setup: delay to be introduced by the controller after CS is asserted - * @cs_hold: delay to be introduced by the controller before CS is deasserted - * @cs_inactive: delay to be introduced by the controller after CS is - * deasserted. If @cs_change_delay is used from @spi_transfer, then the - * two delays will be added up. * @cs_gpios: LEGACY: array of GPIO descs to use as chip select lines; one per * CS number. Any individual value may be -ENOENT for CS lines that * are not GPIOs (driven by the SPI controller itself). Use the cs_gpiods @@ -639,11 +642,6 @@ struct spi_controller { /* Optimized handlers for SPI memory-like operations. */ const struct spi_controller_mem_ops *mem_ops; - /* CS delays */ - struct spi_delay cs_setup; - struct spi_delay cs_hold; - struct spi_delay cs_inactive; - /* gpio chip select */ int *cs_gpios; struct gpio_desc **cs_gpiods; -- 2.7.4