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Message-id: <1400671381-14792-4-git-send-email-k.kozlowski@samsung.com>
Date: Wed, 21 May 2014 13:23:01 +0200
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Mike Turquette <mturquette@...aro.org>,
linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc: Lee Jones <lee.jones@...aro.org>,
Kyungmin Park <kyungmin.park@...sung.com>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Tomasz Figa <t.figa@...sung.com>,
Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH v4 3/3] clk: s2mps11: Add support for S2MPS14 clocks
This patch adds support for S2MPS14 PMIC clocks (BT and AP) to the
s2mps11 clock driver.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc: Kyungmin Park <kyungmin.park@...sung.com>
Reviewed-by: Yadwinder Singh Brar <yadi.brar@...sung.com>
Reviewed-by: Tomasz Figa <t.figa@...sung.com>
Acked-by: Mike Turquette <mturquette@...aro.org>
---
drivers/clk/Kconfig | 8 +++---
drivers/clk/clk-s2mps11.c | 64 +++++++++++++++++++++++++++++++++++------------
2 files changed, 52 insertions(+), 20 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 6f56d3a4f010..8f9ce8ba036d 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -65,12 +65,12 @@ config COMMON_CLK_SI570
clock generators.
config COMMON_CLK_S2MPS11
- tristate "Clock driver for S2MPS11/S5M8767 MFD"
+ tristate "Clock driver for S2MPS1X/S5M8767 MFD"
depends on MFD_SEC_CORE
---help---
- This driver supports S2MPS11/S5M8767 crystal oscillator clock. These
- multi-function devices have 3 fixed-rate oscillators, clocked at
- 32KHz each.
+ This driver supports S2MPS11/S2MPS14/S5M8767 crystal oscillator
+ clock. These multi-function devices have two (S2MPS14) or three
+ (S2MPS11, S5M8767) fixed-rate oscillators, clocked at 32KHz each.
config CLK_TWL6040
tristate "External McPDM functional clock from twl6040"
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
index 23ffd89c4023..9b7b5859a420 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 +23,7 @@
#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>
@@ -126,7 +123,21 @@ 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;
@@ -141,9 +152,12 @@ static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev)
return ERR_PTR(-EINVAL);
}
- 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;
}
@@ -153,6 +167,7 @@ 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;
unsigned int s2mps11_reg;
+ struct clk_init_data *clks_init;
int i, ret = 0;
u32 val;
@@ -168,26 +183,34 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
if (!clk_table)
return -ENOMEM;
- /* Store clocks of_node in first element of s2mps11_clks array */
- s2mps11_clks->clk_np = s2mps11_clk_parse_dt(pdev);
- if (IS_ERR(s2mps11_clks->clk_np))
- return PTR_ERR(s2mps11_clks->clk_np);
-
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;
@@ -220,8 +243,12 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
clkdev_add(s2mps11_clk->lookup);
}
- for (i = 0; i < S2MPS11_CLKS_NUM; i++)
+ 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;
@@ -254,14 +281,19 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
/* 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++)
+ 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", S2MPS11X},
+ { "s2mps14-clk", S2MPS14X},
{ "s5m8767-clk", S5M8767X},
{ },
};
--
1.9.1
--
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