Move DT properties parsing into CPTS driver to simplify CPSW
code and CPTS driver porting on other SoC in the future
(like Keystone 2) - with this change it will not be required
to add the same DT parsing code in Keystone 2 NETCP driver.
Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
---
drivers/net/ethernet/ti/cpsw.c | 16 +---------------
drivers/net/ethernet/ti/cpsw.h | 2 --
drivers/net/ethernet/ti/cpts.c | 32 +++++++++++++++++++++++++++++---
drivers/net/ethernet/ti/cpts.h | 5 +++--
4 files changed, 33 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 6c28ef1..ae1ec6a 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2312,18 +2312,6 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
}
data->active_slave = prop;
- if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
- dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
- return -EINVAL;
- }
- data->cpts_clock_mult = prop;
-
- if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
- dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
- return -EINVAL;
- }
- data->cpts_clock_shift = prop;
-
data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
* sizeof(struct cpsw_slave_data),
GFP_KERNEL);
@@ -2789,9 +2777,7 @@ static int cpsw_probe(struct platform_device *pdev)
goto clean_dma_ret;
}
- cpsw->cpts = cpts_create(cpsw->dev, cpts_regs,
- cpsw->data.cpts_clock_mult,
- cpsw->data.cpts_clock_shift);
+ cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpsw->dev->of_node);
if (IS_ERR(cpsw->cpts)) {
ret = PTR_ERR(cpsw->cpts);
goto clean_ale_ret;
diff --git a/drivers/net/ethernet/ti/cpsw.h b/drivers/net/ethernet/ti/cpsw.h
index 16b54c6..6c3037a 100644
--- a/drivers/net/ethernet/ti/cpsw.h
+++ b/drivers/net/ethernet/ti/cpsw.h
@@ -31,8 +31,6 @@ struct cpsw_platform_data {
u32 channels; /* number of cpdma channels (symmetric) */
u32 slaves; /* number of slave cpgmac ports */
u32 active_slave; /* time stamping, ethtool and SIOCGMIIPHY slave */
- u32 cpts_clock_mult; /* convert input clock ticks to nanoseconds */
- u32 cpts_clock_shift; /* convert input clock ticks to nanoseconds */
u32 ale_entries; /* ale table size */
u32 bd_ram_size; /*buffer descriptor ram size */
u32 mac_control; /* Mac control register */
diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index 47831b2..5d5c46d 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -409,10 +409,34 @@ void cpts_unregister(struct cpts *cpts)
}
EXPORT_SYMBOL_GPL(cpts_unregister);
+static int cpts_of_parse(struct cpts *cpts, struct device_node *node)
+{
+ int ret = -EINVAL;
+ u32 prop;
+
+ if (of_property_read_u32(node, "cpts_clock_mult", &prop))
+ goto of_error;
+ /* save cc.mult original value as it can be modified
+ * by cpts_ptp_adjfreq().
+ */
+ cpts->cc_mult = prop;
+
+ if (of_property_read_u32(node, "cpts_clock_shift", &prop))
+ goto of_error;
+ cpts->cc.shift = prop;
+
+ return 0;
+
+of_error:
+ dev_err(cpts->dev, "CPTS: Missing property in the DT.\n");
+ return ret;
+}
+
struct cpts *cpts_create(struct device *dev, void __iomem *regs,
- u32 mult, u32 shift)
+ struct device_node *node)
{
struct cpts *cpts;
+ int ret;
cpts = devm_kzalloc(dev, sizeof(*cpts), GFP_KERNEL);
if (!cpts)
@@ -423,6 +447,10 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs,
spin_lock_init(&cpts->lock);
INIT_DELAYED_WORK(&cpts->overflow_work, cpts_overflow_check);
+ ret = cpts_of_parse(cpts, node);
+ if (ret)
+ return ERR_PTR(ret);
+
cpts->refclk = devm_clk_get(dev, "cpts");
if (IS_ERR(cpts->refclk)) {
dev_err(dev, "Failed to get cpts refclk\n");
@@ -433,8 +461,6 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs,
cpts->cc.read = cpts_systim_read;
cpts->cc.mask = CLOCKSOURCE_MASK(32);
- cpts->cc.shift = shift;
- cpts->cc_mult = mult;
cpts->info = cpts_info;
return cpts;
diff --git a/drivers/net/ethernet/ti/cpts.h b/drivers/net/ethernet/ti/cpts.h
index e7d857c..5da23af 100644
--- a/drivers/net/ethernet/ti/cpts.h
+++ b/drivers/net/ethernet/ti/cpts.h
@@ -27,6 +27,7 @@
#include <linux/clocksource.h>
#include <linux/device.h>
#include <linux/list.h>
+#include <linux/of.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/skbuff.h>
#include <linux/timecounter.h>
@@ -133,7 +134,7 @@ void cpts_tx_timestamp(struct cpts *cpts, struct sk_buff *skb);
int cpts_register(struct cpts *cpts);
void cpts_unregister(struct cpts *cpts);
struct cpts *cpts_create(struct device *dev, void __iomem *regs,
- u32 mult, u32 shift);
+ struct device_node *node);
void cpts_release(struct cpts *cpts);
static inline void cpts_rx_enable(struct cpts *cpts, int enable)
@@ -168,7 +169,7 @@ static inline void cpts_tx_timestamp(struct cpts *cpts, struct sk_buff *skb)
static inline
struct cpts *cpts_create(struct device *dev, void __iomem *regs,
- u32 mult, u32 shift)
+ struct device_node *node)
{
return NULL;
}
--
2.10.1
--
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