From: Tony Xie <tony.xie@rock-chips.com>
To: heiko@sntech.de
Cc: broonie@kernel.org, lee.jones@linaro.org, a.zummo@towertech.it,
alexandre.belloni@bootlin.com, sboyd@kernel.org,
linux-clk@vger.kernel.org, linux-rtc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, chenjh@rock-chips.com,
xsf@rock-chips.com, zhangqing@rock-chips.com,
huangtao@rock-chips.com, tony.xie@rock-chips.com
Subject: [PATCH 5/5] clk: RK808: add clkout driver for RK809 and RK817.
Date: Mon, 23 Jul 2018 16:40:33 +0800 [thread overview]
Message-ID: <1532335234-23765-1-git-send-email-tony.xie@rock-chips.com> (raw)
In-Reply-To: <1532315945-1094-1-git-send-email-tony.xie@rock-chips.com>
RK809 and RK817 are power management IC chips for multimedia products.
most of their functions and registers are same, including the clkout
funciton.
Signed-off-by: Tony Xie <tony.xie@rock-chips.com>
---
drivers/clk/Kconfig | 6 ++---
drivers/clk/clk-rk808.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 721572a..fc1427c 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -46,11 +46,11 @@ config COMMON_CLK_MAX77686
clock.
config COMMON_CLK_RK808
- tristate "Clock driver for RK805/RK808/RK818"
+ tristate "Clock driver for RK805/RK808/RK809/RK817/RK818"
depends on MFD_RK808
---help---
- This driver supports RK805, RK808 and RK818 crystal oscillator clock. These
- multi-function devices have two fixed-rate oscillators,
+ This driver supports RK805, RK809 and RK817, RK808 and RK818 crystal oscillator clock.
+ These multi-function devices have two fixed-rate oscillators,
clocked at 32KHz each. Clkout1 is always on, Clkout2 can off
by control register.
diff --git a/drivers/clk/clk-rk808.c b/drivers/clk/clk-rk808.c
index 6461f28..c5d3492 100644
--- a/drivers/clk/clk-rk808.c
+++ b/drivers/clk/clk-rk808.c
@@ -96,6 +96,66 @@ static int rk808_clkout2_is_prepared(struct clk_hw *hw)
return idx ? &rk808_clkout->clkout2_hw : &rk808_clkout->clkout1_hw;
}
+static int rk817_clkout2_enable(struct clk_hw *hw, bool enable)
+{
+ struct rk808_clkout *rk808_clkout = container_of(hw,
+ struct rk808_clkout,
+ clkout2_hw);
+ struct rk808 *rk808 = rk808_clkout->rk808;
+
+ return regmap_update_bits(rk808->regmap, RK817_SYS_CFG(1),
+ RK817_CLK32KOUT2_EN,
+ enable ? RK817_CLK32KOUT2_EN : 0);
+}
+
+static int rk817_clkout2_prepare(struct clk_hw *hw)
+{
+ return rk817_clkout2_enable(hw, true);
+}
+
+static void rk817_clkout2_unprepare(struct clk_hw *hw)
+{
+ rk817_clkout2_enable(hw, false);
+}
+
+static int rk817_clkout2_is_prepared(struct clk_hw *hw)
+{
+ struct rk808_clkout *rk808_clkout = container_of(hw,
+ struct rk808_clkout,
+ clkout2_hw);
+ struct rk808 *rk808 = rk808_clkout->rk808;
+ unsigned int val;
+
+ int ret = regmap_read(rk808->regmap, RK817_SYS_CFG(1), &val);
+
+ if (ret < 0)
+ return ret;
+
+ return (val & RK817_CLK32KOUT2_EN) ? 1 : 0;
+}
+
+static const struct clk_ops rk817_clkout2_ops = {
+ .prepare = rk817_clkout2_prepare,
+ .unprepare = rk817_clkout2_unprepare,
+ .is_prepared = rk817_clkout2_is_prepared,
+ .recalc_rate = rk808_clkout_recalc_rate,
+};
+
+static const struct clk_ops *rkpmic_get_ops(long variant)
+{
+ switch (variant) {
+ case RK809_ID:
+ case RK817_ID:
+ return &rk817_clkout2_ops;
+ case RK805_ID:
+ case RK808_ID:
+ case RK818_ID:
+ return &rk808_clkout2_ops;
+ }
+
+ return &rk808_clkout2_ops;
+}
+
static int rk808_clkout_probe(struct platform_device *pdev)
{
struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
@@ -127,7 +187,7 @@ static int rk808_clkout_probe(struct platform_device *pdev)
return ret;
init.name = "rk808-clkout2";
- init.ops = &rk808_clkout2_ops;
+ init.ops = rkpmic_get_ops(rk808->variant);
rk808_clkout->clkout2_hw.init = &init;
/* optional override of the clockname */
--
1.9.1
prev parent reply other threads:[~2018-07-23 8:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1532315945-1094-1-git-send-email-tony.xie@rock-chips.com>
2018-07-23 3:19 ` [PATCH 1/5] mfd: rk808: Add RK817 and RK809 support Tony Xie
2018-07-23 21:59 ` kbuild test robot
2018-07-23 23:13 ` kbuild test robot
2018-07-23 3:19 ` [PATCH 2/5] regulator: rk808: Add regulator driver for RK809 and RK817 Tony Xie
2018-07-23 3:19 ` [PATCH 3/5] mfd: dt-bindings: Add RK809 and RK817 device tree bindings document Tony Xie
2018-07-23 8:29 ` Michal Vokáč
2018-07-23 3:19 ` [PATCH 4/5] RTC: RK808: add RTC driver for RK809 and RK817 Tony Xie
2018-07-23 8:52 ` Alexandre Belloni
2018-07-23 8:40 ` Tony Xie [this message]
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