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path: root/drivers/clk/clk-s2mps11.c
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Diffstat (limited to 'drivers/clk/clk-s2mps11.c')
-rw-r--r--drivers/clk/clk-s2mps11.c128
1 files changed, 89 insertions, 39 deletions
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
index 7be41e676a6..3757e9e72d3 100644
--- a/drivers/clk/clk-s2mps11.c
+++ b/drivers/clk/clk-s2mps11.c
@@ -1,7 +1,7 @@
/*
* clk-s2mps11.c - Clock driver for S2MPS11.
*
- * Copyright (C) 2013 Samsung Electornics
+ * Copyright (C) 2013,2014 Samsung Electornics
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -13,10 +13,6 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
*/
#include <linux/module.h>
@@ -27,6 +23,8 @@
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s2mps14.h>
+#include <linux/mfd/samsung/s5m8767.h>
#include <linux/mfd/samsung/core.h>
#define s2mps11_name(a) (a->hw.init->name)
@@ -43,11 +41,13 @@ enum {
struct s2mps11_clk {
struct sec_pmic_dev *iodev;
+ struct device_node *clk_np;
struct clk_hw hw;
struct clk *clk;
struct clk_lookup *lookup;
u32 mask;
bool enabled;
+ unsigned int reg;
};
static struct s2mps11_clk *to_s2mps11_clk(struct clk_hw *hw)
@@ -60,8 +60,8 @@ static int s2mps11_clk_prepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
- ret = regmap_update_bits(s2mps11->iodev->regmap,
- S2MPS11_REG_RTC_CTRL,
+ ret = regmap_update_bits(s2mps11->iodev->regmap_pmic,
+ s2mps11->reg,
s2mps11->mask, s2mps11->mask);
if (!ret)
s2mps11->enabled = true;
@@ -74,7 +74,7 @@ static void s2mps11_clk_unprepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
- ret = regmap_update_bits(s2mps11->iodev->regmap, S2MPS11_REG_RTC_CTRL,
+ ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, s2mps11->reg,
s2mps11->mask, ~s2mps11->mask);
if (!ret)
@@ -123,29 +123,41 @@ static struct clk_init_data s2mps11_clks_init[S2MPS11_CLKS_NUM] = {
},
};
-static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev)
+static struct clk_init_data s2mps14_clks_init[S2MPS11_CLKS_NUM] = {
+ [S2MPS11_CLK_AP] = {
+ .name = "s2mps14_ap",
+ .ops = &s2mps11_clk_ops,
+ .flags = CLK_IS_ROOT,
+ },
+ [S2MPS11_CLK_BT] = {
+ .name = "s2mps14_bt",
+ .ops = &s2mps11_clk_ops,
+ .flags = CLK_IS_ROOT,
+ },
+};
+
+static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev,
+ struct clk_init_data *clks_init)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct device_node *clk_np;
int i;
if (!iodev->dev->of_node)
- return NULL;
+ return ERR_PTR(-EINVAL);
- clk_np = of_find_node_by_name(iodev->dev->of_node, "clocks");
+ clk_np = of_get_child_by_name(iodev->dev->of_node, "clocks");
if (!clk_np) {
dev_err(&pdev->dev, "could not find clock sub-node\n");
return ERR_PTR(-EINVAL);
}
- clk_table = devm_kzalloc(&pdev->dev, sizeof(struct clk *) *
- S2MPS11_CLKS_NUM, GFP_KERNEL);
- if (!clk_table)
- return ERR_PTR(-ENOMEM);
-
- for (i = 0; i < S2MPS11_CLKS_NUM; i++)
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
+ if (!clks_init[i].name)
+ continue; /* Skip clocks not present in some devices */
of_property_read_string_index(clk_np, "clock-output-names", i,
- &s2mps11_clks_init[i].name);
+ &clks_init[i].name);
+ }
return clk_np;
}
@@ -154,7 +166,8 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mps11_clk *s2mps11_clks, *s2mps11_clk;
- struct device_node *clk_np = NULL;
+ unsigned int s2mps11_reg;
+ struct clk_init_data *clks_init;
int i, ret = 0;
u32 val;
@@ -165,17 +178,44 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
s2mps11_clk = s2mps11_clks;
- clk_np = s2mps11_clk_parse_dt(pdev);
- if (IS_ERR(clk_np))
- return PTR_ERR(clk_np);
+ clk_table = devm_kzalloc(&pdev->dev, sizeof(struct clk *) *
+ S2MPS11_CLKS_NUM, GFP_KERNEL);
+ if (!clk_table)
+ return -ENOMEM;
+
+ switch(platform_get_device_id(pdev)->driver_data) {
+ case S2MPS11X:
+ s2mps11_reg = S2MPS11_REG_RTC_CTRL;
+ clks_init = s2mps11_clks_init;
+ break;
+ case S2MPS14X:
+ s2mps11_reg = S2MPS14_REG_RTCCTRL;
+ clks_init = s2mps14_clks_init;
+ break;
+ case S5M8767X:
+ s2mps11_reg = S5M8767_REG_CTRL1;
+ clks_init = s2mps11_clks_init;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type\n");
+ return -EINVAL;
+ };
+
+ /* Store clocks of_node in first element of s2mps11_clks array */
+ s2mps11_clks->clk_np = s2mps11_clk_parse_dt(pdev, clks_init);
+ if (IS_ERR(s2mps11_clks->clk_np))
+ return PTR_ERR(s2mps11_clks->clk_np);
for (i = 0; i < S2MPS11_CLKS_NUM; i++, s2mps11_clk++) {
+ if (!clks_init[i].name)
+ continue; /* Skip clocks not present in some devices */
s2mps11_clk->iodev = iodev;
- s2mps11_clk->hw.init = &s2mps11_clks_init[i];
+ s2mps11_clk->hw.init = &clks_init[i];
s2mps11_clk->mask = 1 << i;
+ s2mps11_clk->reg = s2mps11_reg;
- ret = regmap_read(s2mps11_clk->iodev->regmap,
- S2MPS11_REG_RTC_CTRL, &val);
+ ret = regmap_read(s2mps11_clk->iodev->regmap_pmic,
+ s2mps11_clk->reg, &val);
if (ret < 0)
goto err_reg;
@@ -190,28 +230,28 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
goto err_reg;
}
- s2mps11_clk->lookup = devm_kzalloc(&pdev->dev,
- sizeof(struct clk_lookup), GFP_KERNEL);
+ s2mps11_clk->lookup = clkdev_alloc(s2mps11_clk->clk,
+ s2mps11_name(s2mps11_clk), NULL);
if (!s2mps11_clk->lookup) {
ret = -ENOMEM;
goto err_lup;
}
- s2mps11_clk->lookup->con_id = s2mps11_name(s2mps11_clk);
- s2mps11_clk->lookup->clk = s2mps11_clk->clk;
-
clkdev_add(s2mps11_clk->lookup);
}
- if (clk_table) {
- for (i = 0; i < S2MPS11_CLKS_NUM; i++)
- clk_table[i] = s2mps11_clks[i].clk;
-
- clk_data.clks = clk_table;
- clk_data.clk_num = S2MPS11_CLKS_NUM;
- of_clk_add_provider(clk_np, of_clk_src_onecell_get, &clk_data);
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
+ /* Skip clocks not present on S2MPS14 */
+ if (!clks_init[i].name)
+ continue;
+ clk_table[i] = s2mps11_clks[i].clk;
}
+ clk_data.clks = clk_table;
+ clk_data.clk_num = S2MPS11_CLKS_NUM;
+ of_clk_add_provider(s2mps11_clks->clk_np, of_clk_src_onecell_get,
+ &clk_data);
+
platform_set_drvdata(pdev, s2mps11_clks);
return ret;
@@ -234,14 +274,24 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
struct s2mps11_clk *s2mps11_clks = platform_get_drvdata(pdev);
int i;
- for (i = 0; i < S2MPS11_CLKS_NUM; i++)
+ of_clk_del_provider(s2mps11_clks[0].clk_np);
+ /* Drop the reference obtained in s2mps11_clk_parse_dt */
+ of_node_put(s2mps11_clks[0].clk_np);
+
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
+ /* Skip clocks not present on S2MPS14 */
+ if (!s2mps11_clks[i].lookup)
+ continue;
clkdev_drop(s2mps11_clks[i].lookup);
+ }
return 0;
}
static const struct platform_device_id s2mps11_clk_id[] = {
- { "s2mps11-clk", 0},
+ { "s2mps11-clk", S2MPS11X},
+ { "s2mps14-clk", S2MPS14X},
+ { "s5m8767-clk", S5M8767X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-06 05:17:02 +0000