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authorMike Turquette <mturquette@linaro.org>2014-09-29 23:38:59 -0700
committerMike Turquette <mturquette@linaro.org>2014-09-29 23:38:59 -0700
commit82de1bc86c493ad832db270635fbf4e8c237f02f (patch)
treef70562cf3ae0a777ff55da734466627e2ab2478c /drivers/clk
parent6e18ff26c2b529de06207caa2be9e5f1cf520972 (diff)
parent04ed831f224d4553682f48e1b4a6b68f2622b68e (diff)
Merge branch 'for-v3.18/ti-clk-driver' of github.com:t-kristo/linux-pm into clk-next
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/ti/clk-dra7-atl.c2
-rw-r--r--drivers/clk/ti/clk.c68
-rw-r--r--drivers/clk/ti/clockdomain.c5
-rw-r--r--drivers/clk/ti/divider.c4
4 files changed, 52 insertions, 27 deletions
diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
index 990e1d9edc01..59bb4b39d12e 100644
--- a/drivers/clk/ti/clk-dra7-atl.c
+++ b/drivers/clk/ti/clk-dra7-atl.c
@@ -203,6 +203,7 @@ static void __init of_dra7_atl_clock_setup(struct device_node *node)
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ kfree(parent_names);
return;
}
cleanup:
@@ -228,6 +229,7 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
cinfo->iobase = of_iomap(node, 0);
cinfo->dev = &pdev->dev;
pm_runtime_enable(cinfo->dev);
+ pm_runtime_irq_safe(cinfo->dev);
pm_runtime_get_sync(cinfo->dev);
atl_write(cinfo, DRA7_ATL_PCLKMUX_REG(0), DRA7_ATL_PCLKMUX);
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index b1a6f7144f3f..337abe5909e1 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -25,8 +25,8 @@
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
-static int ti_dt_clk_memmap_index;
struct ti_clk_ll_ops *ti_clk_ll_ops;
+static struct device_node *clocks_node_ptr[CLK_MAX_MEMMAPS];
/**
* ti_dt_clocks_register - register DT alias clocks during boot
@@ -108,9 +108,21 @@ void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index)
struct clk_omap_reg *reg;
u32 val;
u32 tmp;
+ int i;
reg = (struct clk_omap_reg *)&tmp;
- reg->index = ti_dt_clk_memmap_index;
+
+ for (i = 0; i < CLK_MAX_MEMMAPS; i++) {
+ if (clocks_node_ptr[i] == node->parent)
+ break;
+ }
+
+ if (i == CLK_MAX_MEMMAPS) {
+ pr_err("clk-provider not found for %s!\n", node->name);
+ return NULL;
+ }
+
+ reg->index = i;
if (of_property_read_u32_index(node, "reg", index, &val)) {
pr_err("%s must have reg[%d]!\n", node->name, index);
@@ -127,20 +139,14 @@ void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index)
* @parent: master node
* @index: internal index for clk_reg_ops
*
- * Initializes a master clock IP block and its child clock nodes.
- * Regmap is provided for accessing the register space for the
- * IP block and all the clocks under it.
+ * Initializes a master clock IP block. This basically sets up the
+ * mapping from clocks node to the memory map index. All the clocks
+ * are then initialized through the common of_clk_init call, and the
+ * clocks will access their memory maps based on the node layout.
*/
void ti_dt_clk_init_provider(struct device_node *parent, int index)
{
- const struct of_device_id *match;
- struct device_node *np;
struct device_node *clocks;
- of_clk_init_cb_t clk_init_cb;
- struct clk_init_item *retry;
- struct clk_init_item *tmp;
-
- ti_dt_clk_memmap_index = index;
/* get clocks for this parent */
clocks = of_get_child_by_name(parent, "clocks");
@@ -149,19 +155,31 @@ void ti_dt_clk_init_provider(struct device_node *parent, int index)
return;
}
- for_each_child_of_node(clocks, np) {
- match = of_match_node(&__clk_of_table, np);
- if (!match)
- continue;
- clk_init_cb = (of_clk_init_cb_t)match->data;
- pr_debug("%s: initializing: %s\n", __func__, np->name);
- clk_init_cb(np);
- }
+ /* add clocks node info */
+ clocks_node_ptr[index] = clocks;
+}
- list_for_each_entry_safe(retry, tmp, &retry_list, link) {
- pr_debug("retry-init: %s\n", retry->node->name);
- retry->func(retry->hw, retry->node);
- list_del(&retry->link);
- kfree(retry);
+/**
+ * ti_dt_clk_init_retry_clks - init clocks from the retry list
+ *
+ * Initializes any clocks that have failed to initialize before,
+ * reasons being missing parent node(s) during earlier init. This
+ * typically happens only for DPLLs which need to have both of their
+ * parent clocks ready during init.
+ */
+void ti_dt_clk_init_retry_clks(void)
+{
+ struct clk_init_item *retry;
+ struct clk_init_item *tmp;
+ int retries = 5;
+
+ while (!list_empty(&retry_list) && retries) {
+ list_for_each_entry_safe(retry, tmp, &retry_list, link) {
+ pr_debug("retry-init: %s\n", retry->node->name);
+ retry->func(retry->hw, retry->node);
+ list_del(&retry->link);
+ kfree(retry);
+ }
+ retries--;
}
}
diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c
index f1e0038d76ac..b4c5faccaece 100644
--- a/drivers/clk/ti/clockdomain.c
+++ b/drivers/clk/ti/clockdomain.c
@@ -36,6 +36,11 @@ static void __init of_ti_clockdomain_setup(struct device_node *node)
for (i = 0; i < num_clks; i++) {
clk = of_clk_get(node, i);
+ if (IS_ERR(clk)) {
+ pr_err("%s: Failed get %s' clock nr %d (%ld)\n",
+ __func__, node->full_name, i, PTR_ERR(clk));
+ continue;
+ }
if (__clk_get_flags(clk) & CLK_IS_BASIC) {
pr_warn("can't setup clkdm for basic clk %s\n",
__clk_get_name(clk));
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index a837f703be65..bff2b5b8ff59 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -300,8 +300,8 @@ static struct clk *_register_divider(struct device *dev, const char *name,
return clk;
}
-static struct clk_div_table
-__init *ti_clk_get_div_table(struct device_node *node)
+static struct clk_div_table *
+__init ti_clk_get_div_table(struct device_node *node)
{
struct clk_div_table *table;
const __be32 *divspec;