diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/123-bcma-get-sprom-from-devicetree.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-3.18/123-bcma-get-sprom-from-devicetree.patch | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/123-bcma-get-sprom-from-devicetree.patch b/target/linux/bcm53xx/patches-3.18/123-bcma-get-sprom-from-devicetree.patch new file mode 100644 index 0000000000..fbc75ceff3 --- /dev/null +++ b/target/linux/bcm53xx/patches-3.18/123-bcma-get-sprom-from-devicetree.patch @@ -0,0 +1,88 @@ +From bd9106f5907080b467026bdaaea979fac8c7badb Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 4 May 2014 14:34:31 +0200 +Subject: [PATCH 06/17] bcma: get sprom from devicetree + +This patch make it possible to device an sprom provider in device tree +and get the sprom from this driver. Every time there is such a provider +it gets asked for a sprom. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/bcma/sprom.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++- + 1 file changed, 50 insertions(+), 1 deletion(-) + +--- a/drivers/bcma/sprom.c ++++ b/drivers/bcma/sprom.c +@@ -15,6 +15,8 @@ + #include <linux/io.h> + #include <linux/dma-mapping.h> + #include <linux/slab.h> ++#include <linux/of.h> ++#include <linux/of_platform.h> + + static int(*get_fallback_sprom)(struct bcma_bus *dev, struct ssb_sprom *out); + +@@ -46,6 +48,46 @@ int bcma_arch_register_fallback_sprom(in + return 0; + } + ++#ifdef CONFIG_OF ++static int bcma_fill_sprom_with_dt(struct bcma_bus *bus, ++ struct ssb_sprom *out) ++{ ++ const __be32 *handle; ++ struct device_node *sprom_node; ++ struct platform_device *sprom_dev; ++ struct ssb_sprom *sprom; ++ ++ if (!bus->host_pdev || !bus->host_pdev->dev.of_node) ++ return -ENOENT; ++ ++ handle = of_get_property(bus->host_pdev->dev.of_node, "sprom", NULL); ++ if (!handle) ++ return -ENOENT; ++ ++ sprom_node = of_find_node_by_phandle(be32_to_cpup(handle)); ++ if (!sprom_node) ++ return -ENOENT; ++ ++ sprom_dev = of_find_device_by_node(sprom_node); ++ if (!sprom_dev) ++ return -ENOENT; ++ ++ sprom = platform_get_drvdata(sprom_dev); ++ if (!sprom) ++ return -ENOENT; ++ ++ memcpy(out, sprom, sizeof(*out)); ++ ++ return 0; ++} ++#else ++static int bcma_fill_sprom_with_dt(struct bcma_bus *bus, ++ struct ssb_sprom *out) ++{ ++ return -ENOENT; ++} ++#endif ++ + static int bcma_fill_sprom_with_fallback(struct bcma_bus *bus, + struct ssb_sprom *out) + { +@@ -580,7 +622,14 @@ int bcma_sprom_get(struct bcma_bus *bus) + u16 *sprom; + size_t sprom_sizes[] = { SSB_SPROMSIZE_WORDS_R4, + SSB_SPROMSIZE_WORDS_R10, }; +- int i, err = 0; ++ int i, err; ++ ++ err = bcma_fill_sprom_with_dt(bus, &bus->sprom); ++ if (err == 0) { ++ bcma_info(bus, "Found sprom from device tree provider\n"); ++ return 0; ++ } ++ err = 0; + + if (!bus->drv_cc.core) + return -EOPNOTSUPP; |