diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.9/001-4.12-01-spi-bcm63xx-make-spi-subsystem-aware-of-message-size.patch')
-rw-r--r-- | target/linux/brcm63xx/patches-4.9/001-4.12-01-spi-bcm63xx-make-spi-subsystem-aware-of-message-size.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/target/linux/brcm63xx/patches-4.9/001-4.12-01-spi-bcm63xx-make-spi-subsystem-aware-of-message-size.patch b/target/linux/brcm63xx/patches-4.9/001-4.12-01-spi-bcm63xx-make-spi-subsystem-aware-of-message-size.patch deleted file mode 100644 index f049af0d82..0000000000 --- a/target/linux/brcm63xx/patches-4.9/001-4.12-01-spi-bcm63xx-make-spi-subsystem-aware-of-message-size.patch +++ /dev/null @@ -1,42 +0,0 @@ -From 3fcc36962c32ad0af2d5904103e2b2b824b6b1aa Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jonas.gorski@gmail.com> -Date: Sat, 4 Feb 2017 12:32:59 +0100 -Subject: [PATCH 2/8] spi/bcm63xx: make spi subsystem aware of message size - limits - -The bcm63xx LS SPI controller does not allow manual control of the CS -lines and will toggle it automatically before after sending data, so we -are limited to messages that fit in the FIFO buffer. Since the CS lines -aren't available as GPIOs either, we will need to make slave drivers -aware of this limitation and handle it accordingly. - -Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> ---- - drivers/spi/spi-bcm63xx.c | 9 +++++++++ - 1 file changed, 9 insertions(+) - ---- a/drivers/spi/spi-bcm63xx.c -+++ b/drivers/spi/spi-bcm63xx.c -@@ -428,6 +428,13 @@ static irqreturn_t bcm63xx_spi_interrupt - return IRQ_HANDLED; - } - -+static size_t bcm63xx_spi_max_length(struct spi_device *spi) -+{ -+ struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); -+ -+ return bs->fifo_size; -+} -+ - static const unsigned long bcm6348_spi_reg_offsets[] = { - [SPI_CMD] = SPI_6348_CMD, - [SPI_INT_STATUS] = SPI_6348_INT_STATUS, -@@ -541,6 +548,8 @@ static int bcm63xx_spi_probe(struct plat - master->transfer_one_message = bcm63xx_spi_transfer_one; - master->mode_bits = MODEBITS; - master->bits_per_word_mask = SPI_BPW_MASK(8); -+ master->max_transfer_size = bcm63xx_spi_max_length; -+ master->max_message_size = bcm63xx_spi_max_length; - master->auto_runtime_pm = true; - bs->msg_type_shift = bs->reg_offsets[SPI_MSG_TYPE_SHIFT]; - bs->msg_ctl_width = bs->reg_offsets[SPI_MSG_CTL_WIDTH]; |