linux-kernel - [PATCH v11 3/8] clk: bd718x7: Support ROHM BD70528 clk block

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Message-ID: <005223e676e5d100625d87acb196b56f551e16f3.1553515333.git.matti.vaittinen@fi.rohmeurope.com>
Date:   Mon, 25 Mar 2019 14:05:24 +0200
From:   Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
To:     matti.vaittinen@...rohmeurope.com, mazziesaccount@...il.com
Cc:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Sebastian Reichel <sre@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-watchdog@...r.kernel.org,
        heikki.haikola@...rohmeurope.com, mikko.mutanen@...rohmeurope.com
Subject: [PATCH v11 3/8] clk: bd718x7: Support ROHM BD70528 clk block

ROHM BD70528 is an ultra low power PMIC with similar 32K clk as
bd718x7. Only difference (from clk perspective) is register address.
Add support for controlling BD70528 clk using bd718x7 driver.

Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Acked-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/clk/Kconfig       |  6 +++---
 drivers/clk/clk-bd718x7.c | 20 ++++++++++++++++----
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index e705aab9e38b..86828939d095 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -285,10 +285,10 @@ config COMMON_CLK_STM32H7
 
 config COMMON_CLK_BD718XX
 	tristate "Clock driver for ROHM BD718x7 PMIC"
-	depends on MFD_ROHM_BD718XX
+	depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528
 	help
-	  This driver supports ROHM BD71837 and ROHM BD71847
-	  PMICs clock gates.
+	  This driver supports ROHM BD71837, ROHM BD71847 and
+	  ROHM BD70528 PMICs clock gates.
 
 config COMMON_CLK_FIXED_MMIO
 	bool "Clock driver for Memory Mapped Fixed values"
diff --git a/drivers/clk/clk-bd718x7.c b/drivers/clk/clk-bd718x7.c
index 461228ebf703..ae6e5baee330 100644
--- a/drivers/clk/clk-bd718x7.c
+++ b/drivers/clk/clk-bd718x7.c
@@ -8,6 +8,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/mfd/rohm-bd718x7.h>
+#include <linux/mfd/rohm-bd70528.h>
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
 #include <linux/regmap.h>
@@ -86,9 +87,20 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "No parent clk found\n");
 		return -EINVAL;
 	}
-
-	c->reg = BD718XX_REG_OUT32K;
-	c->mask = BD718XX_OUT32K_EN;
+	switch (mfd->chip_type) {
+	case ROHM_CHIP_TYPE_BD71837:
+	case ROHM_CHIP_TYPE_BD71847:
+		c->reg = BD718XX_REG_OUT32K;
+		c->mask = BD718XX_OUT32K_EN;
+		break;
+	case ROHM_CHIP_TYPE_BD70528:
+		c->reg = BD70528_REG_CLK_OUT;
+		c->mask = BD70528_CLK_OUT_EN_MASK;
+		break;
+	default:
+		dev_err(&pdev->dev, "Unknown clk chip\n");
+		return -EINVAL;
+	}
 	c->mfd = mfd;
 	c->pdev = pdev;
 	c->hw.init = &init;
@@ -119,5 +131,5 @@ static struct platform_driver bd71837_clk = {
 module_platform_driver(bd71837_clk);
 
 MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@...rohmeurope.com>");
-MODULE_DESCRIPTION("BD71837/BD71847 chip clk driver");
+MODULE_DESCRIPTION("BD71837/BD71847/BD70528 chip clk driver");
 MODULE_LICENSE("GPL");
-- 
2.17.2


-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~