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ca5c695a45
Deleted following upstreamed patches: bcm27xx: 950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch bcm27xx: 950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch bcm27xx: 950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch bcm27xx: 950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch bcm27xx: 950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch bcm27xx: 950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch bcm27xx: 950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch bcm27xx: 950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch bcm27xx: 950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch bcm27xx: 950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch bcm27xx: 950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch bcm27xx: 950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch bcm27xx: 950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch bcm27xx: 950-0477-drm-vc4-Correct-DSI-divider-calculations.patch bcm27xx: 950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch bcm53xx: 072-next-ARM_dts_BCM53015-add-mr26.patch mediatek: 920-linux-next-dts-mt7622-bpi-r64-fix-wps-button.patch Manually rebased following patches: bcm27xx: 950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch bcm27xx: 950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch bcm27xx: 950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch bcm27xx: 950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch bcm27xx: 950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch bcm27xx: 950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch bcm27xx: 950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch Runtime tested on turris-omnia and glinet-b1300. Tested-by: John Audia <therealgraysky@proton.me> [bcm2711/RPi4B, mt7622/RT3200] Signed-off-by: Petr Štetiar <ynezz@true.cz>
58 lines
2.0 KiB
Diff
58 lines
2.0 KiB
Diff
From 43840b26213fb0522ab464e9a31f148122acaa80 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Fri, 17 Apr 2020 10:46:19 +0100
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Subject: [PATCH] spi: Force CS_HIGH if GPIO descriptors are used
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Commit f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
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amended of_spi_parse_dt() to always set SPI_CS_HIGH for SPI slaves whose
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Chip Select is defined by a "cs-gpios" devicetree property.
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This change breaks drivers whose probe functions set the mode field of
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the spi_device because in doing so they clear the SPI_CS_HIGH flag.
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Fix by setting SPI_CS_HIGH in spi_setup (under the same conditions as
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in of_spi_parse_dt()).
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See also: 83b2a8fe43bd ("spi: spidev: Fix CS polarity if GPIO descriptors are used")
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Fixes: f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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SQUASH: spi: Demote SPI_CS_HIGH warning to KERN_DEBUG
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This warning is unavoidable from a client's perspective and
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doesn't indicate anything wrong (just surprising).
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SQUASH with "spi: use_gpio_descriptor fixup moved to spi_setup"
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/spi/spi.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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--- a/drivers/spi/spi.c
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+++ b/drivers/spi/spi.c
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@@ -3478,6 +3478,7 @@ static int __spi_validate_bits_per_word(
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*/
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int spi_setup(struct spi_device *spi)
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{
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+ struct spi_controller *ctlr = spi->controller;
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unsigned bad_bits, ugly_bits;
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int status;
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@@ -3499,6 +3500,14 @@ int spi_setup(struct spi_device *spi)
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(SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL |
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SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL)))
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return -EINVAL;
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+
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+ if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
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+ ctlr->cs_gpiods[spi->chip_select] && !(spi->mode & SPI_CS_HIGH)) {
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+ dev_dbg(&spi->dev,
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+ "setup: forcing CS_HIGH (use_gpio_descriptors)\n");
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+ spi->mode |= SPI_CS_HIGH;
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+ }
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+
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/* help drivers fail *cleanly* when they need options
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* that aren't supported with their current controller
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* SPI_CS_WORD has a fallback software implementation,
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