[OpenWrt-Devel] [PATCH] ar71xx:‏ added ath79-spi devtree support

[Дмитрий Смирнов]

Added ath79-spi Devtree Support
http://www.crashcourse.ca/wiki/index.php/Kernel_parsing_of_device_trees

source: https://www.codeaurora.org/cgit/quic/qsdk/oss/system/openwrt/tag/?h=aa/banana&id=AU_LINUX_QSDK_BANANA_10.4_TARGET_ALL.2.4.406
thanks to Gerd

Signed-off-by: Dmytro <dioptimizer at hotmail.com>
---
diff --git a/target/linux/ar71xx/patches-3.10/465-QCA-MIPS-ath79-spi-devtree-support.patch b/target/linux/ar71xx/patches-3.10/465-QCA-MIPS-ath79-spi-devtree-support.patch
new file mode 100644
index 0000000..9e0cb47
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.10/465-QCA-MIPS-ath79-spi-devtree-support.patch
@@ -0,0 +1,62 @@
+--- a/drivers/spi/spi-ath79.c    2013-06-21 16:53:13.000000000 +0800
++++ b/drivers/spi/spi-ath79.c    2013-06-26 10:22:29.643942633 +0800
+@@ -27,6 +27,9 @@
+ &include <linux/gpio.h>
+ &include <linux/clk.h>
+ &include <linux/err.h>
++&ifdef CONFIG_OF
++&include <linux/of.h>
++&endif
+
+ &include <asm/mach-ath79/ar71xx_regs.h>
+ &include <asm/mach-ath79/ath79_spi_platform.h>
+@@ -183,11 +186,39 @@
+     }
+ }
+
++&ifdef CONFIG_OF
++static struct ath79_spi_controller_data ath79_spi_of_cdata;
++static int ath79_spi_of_cdata_setup(struct spi_device *spi)
++{
++    u32 cdata[3];
++
++    if (!spi->dev.of_node)
++        return -EINVAL;
++
++    if (!of_property_read_u32_array(spi->dev.of_node,
++                "spi-controller-data", cdata, 3)) {
++        ath79_spi_of_cdata.is_flash = cdata[0];
++        ath79_spi_of_cdata.cs_type = cdata[1];
++        ath79_spi_of_cdata.cs_line = cdata[2];
++        spi->controller_data = &ath79_spi_of_cdata;
++        return 0;
++    }
++
++    return -EINVAL;
++}
++&else
++static int ath79_spi_of_cdata_setup(struct spi_device *spi)
++{
++    return -EINVAL;
++}
++&endif
++
+ static int ath79_spi_setup(struct spi_device *spi)
+ {
+     int status = 0;
+
+-    if (spi->controller_data == NULL)
++    if (spi->controller_data == NULL &&
++            ath79_spi_of_cdata_setup(spi))
+         return -EINVAL;
+
+     if (spi->bits_per_word> 32)
+@@ -465,6 +496,8 @@
+     master->cleanup = ath79_spi_cleanup;
+     master->bus_num = pdata->bus_num;
+     master->num_chipselect = pdata->num_chipselect;
++    master->dev.parent = &pdev->dev;
++    master->dev.of_node = pdev->dev.of_node;
+
+     sp->miso_line = pdata->miso_line;
+

 		 	   		  
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