diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/001-4.12-03-spi-bcm63xx-add-support-for-probing-through-devicetr.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.4/001-4.12-03-spi-bcm63xx-add-support-for-probing-through-devicetr.patch | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/001-4.12-03-spi-bcm63xx-add-support-for-probing-through-devicetr.patch b/target/linux/brcm63xx/patches-4.4/001-4.12-03-spi-bcm63xx-add-support-for-probing-through-devicetr.patch deleted file mode 100644 index 51054625ee..0000000000 --- a/target/linux/brcm63xx/patches-4.4/001-4.12-03-spi-bcm63xx-add-support-for-probing-through-devicetr.patch +++ /dev/null @@ -1,98 +0,0 @@ -From 3353228a04a004ec67073871f40cf58dc4e209aa Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jonas.gorski@gmail.com> -Date: Mon, 7 Sep 2015 21:01:38 +0200 -Subject: [PATCH 4/8] spi/bcm63xx: add support for probing through devicetree - -Add required binding support to probe through device tree. - -Use the compatible instead of the resource size for identifiying the -block type, and allow reducing the number of cs lines through OF. - -Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> ---- - drivers/spi/spi-bcm63xx.c | 42 ++++++++++++++++++++++++++++++++++++------ - 1 file changed, 36 insertions(+), 6 deletions(-) - ---- a/drivers/spi/spi-bcm63xx.c -+++ b/drivers/spi/spi-bcm63xx.c -@@ -26,6 +26,7 @@ - #include <linux/completion.h> - #include <linux/err.h> - #include <linux/pm_runtime.h> -+#include <linux/of.h> - - /* BCM 6338/6348 SPI core */ - #define SPI_6348_RSET_SIZE 64 -@@ -485,21 +486,48 @@ static const struct platform_device_id b - }, - }; - -+static const struct of_device_id bcm63xx_spi_of_match[] = { -+ { .compatible = "brcm,bcm6348-spi", .data = &bcm6348_spi_reg_offsets }, -+ { .compatible = "brcm,bcm6358-spi", .data = &bcm6358_spi_reg_offsets }, -+ { }, -+}; -+ - static int bcm63xx_spi_probe(struct platform_device *pdev) - { - struct resource *r; - const unsigned long *bcm63xx_spireg; - struct device *dev = &pdev->dev; -- int irq; -+ int irq, bus_num; - struct spi_master *master; - struct clk *clk; - struct bcm63xx_spi *bs; - int ret; -+ u32 num_cs = BCM63XX_SPI_MAX_CS; - -- if (!pdev->id_entry->driver_data) -- return -EINVAL; -+ if (dev->of_node) { -+ const struct of_device_id *match; - -- bcm63xx_spireg = (const unsigned long *)pdev->id_entry->driver_data; -+ match = of_match_node(bcm63xx_spi_of_match, dev->of_node); -+ if (!match) -+ return -EINVAL; -+ bcm63xx_spireg = match->data; -+ -+ of_property_read_u32(dev->of_node, "num-cs", &num_cs); -+ if (num_cs > BCM63XX_SPI_MAX_CS) { -+ dev_warn(dev, "unsupported number of cs (%i), reducing to 8\n", -+ num_cs); -+ num_cs = BCM63XX_SPI_MAX_CS; -+ } -+ -+ bus_num = -1; -+ } else if (pdev->id_entry->driver_data) { -+ const struct platform_device_id *match = pdev->id_entry; -+ -+ bcm63xx_spireg = (const unsigned long *)match->driver_data; -+ bus_num = BCM63XX_SPI_BUS_NUM; -+ } else { -+ return -EINVAL; -+ } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { -@@ -544,8 +572,9 @@ static int bcm63xx_spi_probe(struct plat - goto out_err; - } - -- master->bus_num = BCM63XX_SPI_BUS_NUM; -- master->num_chipselect = BCM63XX_SPI_MAX_CS; -+ master->dev.of_node = dev->of_node; -+ master->bus_num = bus_num; -+ master->num_chipselect = num_cs; - master->transfer_one_message = bcm63xx_spi_transfer_one; - master->mode_bits = MODEBITS; - master->bits_per_word_mask = SPI_BPW_MASK(8); -@@ -634,6 +663,7 @@ static struct platform_driver bcm63xx_sp - .driver = { - .name = "bcm63xx-spi", - .pm = &bcm63xx_spi_pm_ops, -+ .of_match_table = bcm63xx_spi_of_match, - }, - .id_table = bcm63xx_spi_dev_match, - .probe = bcm63xx_spi_probe, |