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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-12-11 11:18:45 -0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-12-11 11:18:45 -0200
commit9374020a78fce13a1cf2edf3d26f6dd7231b5c3d (patch)
tree50c8629e6c6222c5b9681506b52afbde818c5e56 /drivers/bus/omap-ocp2scp.c
parentd2a0db1ee01aea154ccc460e45a16857e32c4427 (diff)
parent29594404d7fe73cd80eaa4ee8c43dcc53970c60e (diff)
Merge tag 'v3.7' into v4l_for_linus
Linux 3.7 * tag 'v3.7': (1545 commits) Linux 3.7 Input: matrix-keymap - provide proper module license Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage ipv4: ip_check_defrag must not modify skb before unsharing Revert "mm: avoid waking kswapd for THP allocations when compaction is deferred or contended" inet_diag: validate port comparison byte code to prevent unsafe reads inet_diag: avoid unsafe and nonsensical prefix matches in inet_diag_bc_run() inet_diag: validate byte code to prevent oops in inet_diag_bc_run() inet_diag: fix oops for IPv4 AF_INET6 TCP SYN-RECV state mm: vmscan: fix inappropriate zone congestion clearing vfs: fix O_DIRECT read past end of block device net: gro: fix possible panic in skb_gro_receive() tcp: bug fix Fast Open client retransmission tmpfs: fix shared mempolicy leak mm: vmscan: do not keep kswapd looping forever due to individual uncompactable zones mm: compaction: validate pfn range passed to isolate_freepages_block mmc: sh-mmcif: avoid oops on spurious interrupts (second try) Revert misapplied "mmc: sh-mmcif: avoid oops on spurious interrupts" mmc: sdhci-s3c: fix missing clock for gpio card-detect lib/Makefile: Fix oid_registry build dependency ...
Diffstat (limited to 'drivers/bus/omap-ocp2scp.c')
-rw-r--r--drivers/bus/omap-ocp2scp.c68
1 files changed, 65 insertions, 3 deletions
diff --git a/drivers/bus/omap-ocp2scp.c b/drivers/bus/omap-ocp2scp.c
index ff63560b8467..0c48b0e05ed6 100644
--- a/drivers/bus/omap-ocp2scp.c
+++ b/drivers/bus/omap-ocp2scp.c
@@ -22,6 +22,26 @@
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/platform_data/omap_ocp2scp.h>
+
+/**
+ * _count_resources - count for the number of resources
+ * @res: struct resource *
+ *
+ * Count and return the number of resources populated for the device that is
+ * connected to ocp2scp.
+ */
+static unsigned _count_resources(struct resource *res)
+{
+ int cnt = 0;
+
+ while (res->start != res->end) {
+ cnt++;
+ res++;
+ }
+
+ return cnt;
+}
static int ocp2scp_remove_devices(struct device *dev, void *c)
{
@@ -34,20 +54,62 @@ static int ocp2scp_remove_devices(struct device *dev, void *c)
static int __devinit omap_ocp2scp_probe(struct platform_device *pdev)
{
- int ret;
- struct device_node *np = pdev->dev.of_node;
+ int ret;
+ unsigned res_cnt, i;
+ struct device_node *np = pdev->dev.of_node;
+ struct platform_device *pdev_child;
+ struct omap_ocp2scp_platform_data *pdata = pdev->dev.platform_data;
+ struct omap_ocp2scp_dev *dev;
if (np) {
ret = of_platform_populate(np, NULL, NULL, &pdev->dev);
if (ret) {
- dev_err(&pdev->dev, "failed to add resources for ocp2scp child\n");
+ dev_err(&pdev->dev,
+ "failed to add resources for ocp2scp child\n");
goto err0;
}
+ } else if (pdata) {
+ for (i = 0, dev = *pdata->devices; i < pdata->dev_cnt; i++,
+ dev++) {
+ res_cnt = _count_resources(dev->res);
+
+ pdev_child = platform_device_alloc(dev->drv_name,
+ PLATFORM_DEVID_AUTO);
+ if (!pdev_child) {
+ dev_err(&pdev->dev,
+ "failed to allocate mem for ocp2scp child\n");
+ goto err0;
+ }
+
+ ret = platform_device_add_resources(pdev_child,
+ dev->res, res_cnt);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to add resources for ocp2scp child\n");
+ goto err1;
+ }
+
+ pdev_child->dev.parent = &pdev->dev;
+
+ ret = platform_device_add(pdev_child);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to register ocp2scp child device\n");
+ goto err1;
+ }
+ }
+ } else {
+ dev_err(&pdev->dev, "OCP2SCP initialized without plat data\n");
+ return -EINVAL;
}
+
pm_runtime_enable(&pdev->dev);
return 0;
+err1:
+ platform_device_put(pdev_child);
+
err0:
device_for_each_child(&pdev->dev, NULL, ocp2scp_remove_devices);