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f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
81 lines
2.5 KiB
Diff
81 lines
2.5 KiB
Diff
From e27613dee9bede1a5d8c86c3cdc5244175651534 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 24 Jun 2015 14:10:44 +0100
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Subject: [PATCH 012/454] spi-bcm2835: Support pin groups other than 7-11
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The spi-bcm2835 driver automatically uses GPIO chip-selects due to
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some unreliability of the native ones. In doing so it chooses the
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same pins as the native chip-selects would use, but the existing
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code always uses pins 7 and 8, wherever the SPI function is mapped.
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Search the pinctrl group assigned to the driver for pins that
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correspond to native chip-selects, and use those for GPIO chip-
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selects.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/spi/spi-bcm2835.c | 45 ++++++++++++++++++++++++++++++++-------
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1 file changed, 37 insertions(+), 8 deletions(-)
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--- a/drivers/spi/spi-bcm2835.c
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+++ b/drivers/spi/spi-bcm2835.c
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@@ -688,6 +688,8 @@ static int bcm2835_spi_setup(struct spi_
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{
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int err;
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struct gpio_chip *chip;
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+ struct device_node *pins;
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+ u32 pingroup_index;
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/*
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* sanity checking the native-chipselects
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*/
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@@ -704,15 +706,42 @@ static int bcm2835_spi_setup(struct spi_
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"setup: only two native chip-selects are supported\n");
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return -EINVAL;
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}
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- /* now translate native cs to GPIO */
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- /* get the gpio chip for the base */
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- chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
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- if (!chip)
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- return 0;
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+ /* now translate native cs to GPIO */
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+ /* first look for chip select pins in the devices pin groups */
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+ for (pingroup_index = 0;
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+ (pins = of_parse_phandle(spi->master->dev.of_node,
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+ "pinctrl-0",
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+ pingroup_index)) != 0;
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+ pingroup_index++) {
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+ u32 pin;
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+ u32 pin_index;
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+ for (pin_index = 0;
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+ of_property_read_u32_index(pins,
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+ "brcm,pins",
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+ pin_index,
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+ &pin) == 0;
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+ pin_index++) {
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+ if (((spi->chip_select == 0) &&
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+ ((pin == 8) || (pin == 36) || (pin == 46))) ||
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+ ((spi->chip_select == 1) &&
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+ ((pin == 7) || (pin == 35)))) {
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+ spi->cs_gpio = pin;
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+ break;
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+ }
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+ }
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+ of_node_put(pins);
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+ }
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+ /* if that fails, assume GPIOs 7-11 are used */
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+ if (!gpio_is_valid(spi->cs_gpio) ) {
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+ /* get the gpio chip for the base */
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+ chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
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+ if (!chip)
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+ return 0;
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- /* and calculate the real CS */
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- spi->cs_gpio = chip->base + 8 - spi->chip_select;
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+ /* and calculate the real CS */
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+ spi->cs_gpio = chip->base + 8 - spi->chip_select;
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+ }
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/* and set up the "mode" and level */
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dev_info(&spi->dev, "setting up native-CS%i as GPIO %i\n",
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