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authorArnd Bergmann <arnd@arndb.de>2016-04-25 21:48:29 (GMT)
committerArnd Bergmann <arnd@arndb.de>2016-04-25 21:48:29 (GMT)
commitc6ba3f693297fb900ad7435cc963abd2582b1176 (patch)
tree592caab877aef6bb45ca880abc430061e9dc4023 /drivers/soc
parent21e8868e661ededd2c45c8ec27f6fd5354b88b71 (diff)
parentb0ec633c28d42281c03b41dbc92a4448a481f2f3 (diff)
downloadlinux-c6ba3f693297fb900ad7435cc963abd2582b1176.tar.xz
Merge tag 'arm-soc/for-4.7/drivers' of http://github.com/Broadcom/stblinux into next/drivers
Merge "Broadcom ARM-based SoCs drivers changes" from Florian Fainelli: - Justin adds a soc_dev driver to properly report to user-space the Broadcom STB SoC family, product and revision - Florian reworks how the brcmstb_gisb driver dependency is done to enable it on Broadcom STB MIPS-based SoCs and remove a select in arch/arm/mach-bcm/Kconfig * tag 'arm-soc/for-4.7/drivers' of http://github.com/Broadcom/stblinux: bus: brcmstb_gisb: Rework dependencies soc: brcmstb: add SoC driver to brcmstb
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/brcmstb/common.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/soc/brcmstb/common.c b/drivers/soc/brcmstb/common.c
index c262c02..daf86ac 100644
--- a/drivers/soc/brcmstb/common.c
+++ b/drivers/soc/brcmstb/common.c
@@ -12,10 +12,18 @@
* GNU General Public License for more details.
*/
+#include <linux/io.h>
#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/soc/brcmstb/brcmstb.h>
+#include <linux/sys_soc.h>
#include <soc/brcmstb/common.h>
+static u32 family_id;
+static u32 product_id;
+
static const struct of_device_id brcmstb_machine_match[] = {
{ .compatible = "brcm,brcmstb", },
{ }
@@ -31,3 +39,53 @@ bool soc_is_brcmstb(void)
return of_match_node(brcmstb_machine_match, root) != NULL;
}
+
+static const struct of_device_id sun_top_ctrl_match[] = {
+ { .compatible = "brcm,brcmstb-sun-top-ctrl", },
+ { }
+};
+
+static int __init brcmstb_soc_device_init(void)
+{
+ struct soc_device_attribute *soc_dev_attr;
+ struct soc_device *soc_dev;
+ struct device_node *sun_top_ctrl;
+ void __iomem *sun_top_ctrl_base;
+
+ sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
+ if (!sun_top_ctrl)
+ return -ENODEV;
+
+ sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
+ if (!sun_top_ctrl_base)
+ return -ENODEV;
+
+ family_id = readl(sun_top_ctrl_base);
+ product_id = readl(sun_top_ctrl_base + 0x4);
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ return -ENOMEM;
+
+ soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
+ family_id >> 28 ?
+ family_id >> 16 : family_id >> 8);
+ soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
+ product_id >> 28 ?
+ product_id >> 16 : product_id >> 8);
+ soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
+ ((product_id & 0xf0) >> 4) + 'A',
+ product_id & 0xf);
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(soc_dev_attr->family);
+ kfree(soc_dev_attr->soc_id);
+ kfree(soc_dev_attr->revision);
+ kfree(soc_dev_attr);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+arch_initcall(brcmstb_soc_device_init);