Add driver for the StarFive JH7110 Video-Output clock controller.
And these clock controllers should power on and enable the clocks from
SYSCRG first before registering.
Reviewed-by: Hal Feng <[email protected]>
Signed-off-by: Xingyu Wu <[email protected]>
---
drivers/clk/starfive/Kconfig | 8 +
drivers/clk/starfive/Makefile | 1 +
.../clk/starfive/clk-starfive-jh7110-vout.c | 239 ++++++++++++++++++
3 files changed, 248 insertions(+)
create mode 100644 drivers/clk/starfive/clk-starfive-jh7110-vout.c
diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
index 13b4d08cbcd2..3fa983eb7d32 100644
--- a/drivers/clk/starfive/Kconfig
+++ b/drivers/clk/starfive/Kconfig
@@ -55,3 +55,11 @@ config CLK_STARFIVE_JH7110_ISP
help
Say yes here to support the Image-Signal-Process clock controller
on the StarFive JH7110 SoC.
+
+config CLK_STARFIVE_JH7110_VOUT
+ tristate "StarFive JH7110 Video-Output clock support"
+ depends on CLK_STARFIVE_JH7110_SYS && JH71XX_PMU
+ default m if ARCH_STARFIVE
+ help
+ Say yes here to support the Video-Output clock controller
+ on the StarFive JH7110 SoC.
diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile
index 76fb9f8d628b..841377e45bb6 100644
--- a/drivers/clk/starfive/Makefile
+++ b/drivers/clk/starfive/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_SYS) += clk-starfive-jh7110-sys.o
obj-$(CONFIG_CLK_STARFIVE_JH7110_AON) += clk-starfive-jh7110-aon.o
obj-$(CONFIG_CLK_STARFIVE_JH7110_STG) += clk-starfive-jh7110-stg.o
obj-$(CONFIG_CLK_STARFIVE_JH7110_ISP) += clk-starfive-jh7110-isp.o
+obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT) += clk-starfive-jh7110-vout.o
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-vout.c b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
new file mode 100644
index 000000000000..743840e03d81
--- /dev/null
+++ b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * StarFive JH7110 Video-Output Clock Driver
+ *
+ * Copyright (C) 2022-2023 StarFive Technology Co., Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <dt-bindings/clock/starfive,jh7110-crg.h>
+
+#include "clk-starfive-jh7110.h"
+
+/* external clocks */
+#define JH7110_VOUTCLK_VOUT_SRC (JH7110_VOUTCLK_END + 0)
+#define JH7110_VOUTCLK_VOUT_TOP_AHB (JH7110_VOUTCLK_END + 1)
+#define JH7110_VOUTCLK_VOUT_TOP_AXI (JH7110_VOUTCLK_END + 2)
+#define JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK (JH7110_VOUTCLK_END + 3)
+#define JH7110_VOUTCLK_I2STX0_BCLK (JH7110_VOUTCLK_END + 4)
+#define JH7110_VOUTCLK_HDMITX0_PIXELCLK (JH7110_VOUTCLK_END + 5)
+#define JH7110_VOUTCLK_EXT_END (JH7110_VOUTCLK_END + 6)
+
+static struct clk_bulk_data jh7110_vout_top_clks[] = {
+ { .id = "vout_src" },
+ { .id = "vout_top_ahb" }
+};
+
+static const struct jh71x0_clk_data jh7110_voutclk_data[] = {
+ /* divider */
+ JH71X0__DIV(JH7110_VOUTCLK_APB, "apb", 8, JH7110_VOUTCLK_VOUT_TOP_AHB),
+ JH71X0__DIV(JH7110_VOUTCLK_DC8200_PIX, "dc8200_pix", 63, JH7110_VOUTCLK_VOUT_SRC),
+ JH71X0__DIV(JH7110_VOUTCLK_DSI_SYS, "dsi_sys", 31, JH7110_VOUTCLK_VOUT_SRC),
+ JH71X0__DIV(JH7110_VOUTCLK_TX_ESC, "tx_esc", 31, JH7110_VOUTCLK_VOUT_TOP_AHB),
+ /* dc8200 */
+ JH71X0_GATE(JH7110_VOUTCLK_DC8200_AXI, "dc8200_axi", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
+ JH71X0_GATE(JH7110_VOUTCLK_DC8200_CORE, "dc8200_core", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
+ JH71X0_GATE(JH7110_VOUTCLK_DC8200_AHB, "dc8200_ahb", 0, JH7110_VOUTCLK_VOUT_TOP_AHB),
+ JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX0, "dc8200_pix0", 0, 2,
+ JH7110_VOUTCLK_DC8200_PIX,
+ JH7110_VOUTCLK_HDMITX0_PIXELCLK),
+ JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX1, "dc8200_pix1", 0, 2,
+ JH7110_VOUTCLK_DC8200_PIX,
+ JH7110_VOUTCLK_HDMITX0_PIXELCLK),
+ /* LCD */
+ JH71X0_GMUX(JH7110_VOUTCLK_DOM_VOUT_TOP_LCD, "dom_vout_top_lcd", 0, 2,
+ JH7110_VOUTCLK_DC8200_PIX0,
+ JH7110_VOUTCLK_DC8200_PIX1),
+ /* dsiTx */
+ JH71X0_GATE(JH7110_VOUTCLK_DSITX_APB, "dsiTx_apb", 0, JH7110_VOUTCLK_DSI_SYS),
+ JH71X0_GATE(JH7110_VOUTCLK_DSITX_SYS, "dsiTx_sys", 0, JH7110_VOUTCLK_DSI_SYS),
+ JH71X0_GMUX(JH7110_VOUTCLK_DSITX_DPI, "dsiTx_dpi", 0, 2,
+ JH7110_VOUTCLK_DC8200_PIX,
+ JH7110_VOUTCLK_HDMITX0_PIXELCLK),
+ JH71X0_GATE(JH7110_VOUTCLK_DSITX_TXESC, "dsiTx_txesc", 0, JH7110_VOUTCLK_TX_ESC),
+ /* mipitx DPHY */
+ JH71X0_GATE(JH7110_VOUTCLK_MIPITX_DPHY_TXESC, "mipitx_dphy_txesc", 0,
+ JH7110_VOUTCLK_TX_ESC),
+ /* hdmi */
+ JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_MCLK, "hdmi_tx_mclk", 0,
+ JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK),
+ JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_BCLK, "hdmi_tx_bclk", 0,
+ JH7110_VOUTCLK_I2STX0_BCLK),
+ JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_SYS, "hdmi_tx_sys", 0, JH7110_VOUTCLK_APB),
+};
+
+static int jh7110_vout_top_rst_init(struct jh71x0_clk_priv *priv)
+{
+ struct reset_control *top_rst;
+
+ /* The reset should be shared and other Vout modules will use its. */
+ top_rst = devm_reset_control_get_shared(priv->dev, NULL);
+ if (IS_ERR(top_rst))
+ return dev_err_probe(priv->dev, PTR_ERR(top_rst), "failed to get top reset\n");
+
+ return reset_control_deassert(top_rst);
+}
+
+static struct clk_hw *jh7110_voutclk_get(struct of_phandle_args *clkspec, void *data)
+{
+ struct jh71x0_clk_priv *priv = data;
+ unsigned int idx = clkspec->args[0];
+
+ if (idx < JH7110_VOUTCLK_END)
+ return &priv->reg[idx].hw;
+
+ return ERR_PTR(-EINVAL);
+}
+
+#ifdef CONFIG_PM
+static int jh7110_voutcrg_suspend(struct device *dev)
+{
+ struct top_sysclk *top = dev_get_drvdata(dev);
+
+ clk_bulk_disable_unprepare(top->top_clks_num, top->top_clks);
+
+ return 0;
+}
+
+static int jh7110_voutcrg_resume(struct device *dev)
+{
+ struct top_sysclk *top = dev_get_drvdata(dev);
+
+ return clk_bulk_prepare_enable(top->top_clks_num, top->top_clks);
+}
+#endif
+
+static const struct dev_pm_ops jh7110_voutcrg_pm_ops = {
+ SET_RUNTIME_PM_OPS(jh7110_voutcrg_suspend, jh7110_voutcrg_resume, NULL)
+};
+
+static int jh7110_voutcrg_probe(struct platform_device *pdev)
+{
+ struct jh71x0_clk_priv *priv;
+ struct top_sysclk *top;
+ unsigned int idx;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev,
+ struct_size(priv, reg, JH7110_VOUTCLK_END),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ top = devm_kzalloc(&pdev->dev, sizeof(*top), GFP_KERNEL);
+ if (!top)
+ return -ENOMEM;
+
+ spin_lock_init(&priv->rmw_lock);
+ priv->dev = &pdev->dev;
+ priv->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ top->top_clks = jh7110_vout_top_clks;
+ top->top_clks_num = ARRAY_SIZE(jh7110_vout_top_clks);
+ ret = devm_clk_bulk_get(priv->dev, top->top_clks_num, top->top_clks);
+ if (ret)
+ return dev_err_probe(priv->dev, ret, "failed to get top clocks\n");
+ dev_set_drvdata(priv->dev, top);
+
+ /* enable power domain and clocks */
+ pm_runtime_enable(priv->dev);
+ ret = pm_runtime_get_sync(priv->dev);
+ if (ret < 0)
+ return dev_err_probe(priv->dev, ret, "failed to turn on power\n");
+
+ ret = jh7110_vout_top_rst_init(priv);
+ if (ret)
+ goto err_exit;
+
+ for (idx = 0; idx < JH7110_VOUTCLK_END; idx++) {
+ u32 max = jh7110_voutclk_data[idx].max;
+ struct clk_parent_data parents[4] = {};
+ struct clk_init_data init = {
+ .name = jh7110_voutclk_data[idx].name,
+ .ops = starfive_jh71x0_clk_ops(max),
+ .parent_data = parents,
+ .num_parents =
+ ((max & JH71X0_CLK_MUX_MASK) >> JH71X0_CLK_MUX_SHIFT) + 1,
+ .flags = jh7110_voutclk_data[idx].flags,
+ };
+ struct jh71x0_clk *clk = &priv->reg[idx];
+ unsigned int i;
+ const char *fw_name[JH7110_VOUTCLK_EXT_END - JH7110_VOUTCLK_END] = {
+ "vout_src",
+ "vout_top_ahb",
+ "vout_top_axi",
+ "vout_top_hdmitx0_mclk",
+ "i2stx0_bclk",
+ "hdmitx0_pixelclk"
+ };
+
+ for (i = 0; i < init.num_parents; i++) {
+ unsigned int pidx = jh7110_voutclk_data[idx].parents[i];
+
+ if (pidx < JH7110_VOUTCLK_END)
+ parents[i].hw = &priv->reg[pidx].hw;
+ else if (pidx < JH7110_VOUTCLK_EXT_END)
+ parents[i].fw_name = fw_name[pidx - JH7110_VOUTCLK_END];
+ }
+
+ clk->hw.init = &init;
+ clk->idx = idx;
+ clk->max_div = max & JH71X0_CLK_DIV_MASK;
+
+ ret = devm_clk_hw_register(&pdev->dev, &clk->hw);
+ if (ret)
+ goto err_exit;
+ }
+
+ ret = devm_of_clk_add_hw_provider(&pdev->dev, jh7110_voutclk_get, priv);
+ if (ret)
+ goto err_exit;
+
+ ret = jh7110_reset_controller_register(priv, "rst-vo", 4);
+ if (ret)
+ goto err_exit;
+
+ return 0;
+
+err_exit:
+ pm_runtime_put_sync(priv->dev);
+ pm_runtime_disable(priv->dev);
+ return ret;
+}
+
+static int jh7110_voutcrg_remove(struct platform_device *pdev)
+{
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+static const struct of_device_id jh7110_voutcrg_match[] = {
+ { .compatible = "starfive,jh7110-voutcrg" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, jh7110_voutcrg_match);
+
+static struct platform_driver jh7110_voutcrg_driver = {
+ .probe = jh7110_voutcrg_probe,
+ .remove = jh7110_voutcrg_remove,
+ .driver = {
+ .name = "clk-starfive-jh7110-vout",
+ .of_match_table = jh7110_voutcrg_match,
+ .pm = &jh7110_voutcrg_pm_ops,
+ },
+};
+module_platform_driver(jh7110_voutcrg_driver);
+
+MODULE_AUTHOR("Xingyu Wu <[email protected]>");
+MODULE_DESCRIPTION("StarFive JH7110 Video-Output clock driver");
+MODULE_LICENSE("GPL");
--
2.25.1
On Wed, 12 Jul 2023 at 11:22, Xingyu Wu <[email protected]> wrote:
>
> Add driver for the StarFive JH7110 Video-Output clock controller.
> And these clock controllers should power on and enable the clocks from
> SYSCRG first before registering.
>
> Reviewed-by: Hal Feng <[email protected]>
> Signed-off-by: Xingyu Wu <[email protected]>
> ---
> drivers/clk/starfive/Kconfig | 8 +
> drivers/clk/starfive/Makefile | 1 +
> .../clk/starfive/clk-starfive-jh7110-vout.c | 239 ++++++++++++++++++
> 3 files changed, 248 insertions(+)
> create mode 100644 drivers/clk/starfive/clk-starfive-jh7110-vout.c
>
> diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
> index 13b4d08cbcd2..3fa983eb7d32 100644
> --- a/drivers/clk/starfive/Kconfig
> +++ b/drivers/clk/starfive/Kconfig
> @@ -55,3 +55,11 @@ config CLK_STARFIVE_JH7110_ISP
> help
> Say yes here to support the Image-Signal-Process clock controller
> on the StarFive JH7110 SoC.
> +
> +config CLK_STARFIVE_JH7110_VOUT
> + tristate "StarFive JH7110 Video-Output clock support"
> + depends on CLK_STARFIVE_JH7110_SYS && JH71XX_PMU
> + default m if ARCH_STARFIVE
> + help
> + Say yes here to support the Video-Output clock controller
> + on the StarFive JH7110 SoC.
> diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile
> index 76fb9f8d628b..841377e45bb6 100644
> --- a/drivers/clk/starfive/Makefile
> +++ b/drivers/clk/starfive/Makefile
> @@ -8,3 +8,4 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_SYS) += clk-starfive-jh7110-sys.o
> obj-$(CONFIG_CLK_STARFIVE_JH7110_AON) += clk-starfive-jh7110-aon.o
> obj-$(CONFIG_CLK_STARFIVE_JH7110_STG) += clk-starfive-jh7110-stg.o
> obj-$(CONFIG_CLK_STARFIVE_JH7110_ISP) += clk-starfive-jh7110-isp.o
> +obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT) += clk-starfive-jh7110-vout.o
> diff --git a/drivers/clk/starfive/clk-starfive-jh7110-vout.c b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
> new file mode 100644
> index 000000000000..743840e03d81
> --- /dev/null
> +++ b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
> @@ -0,0 +1,239 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * StarFive JH7110 Video-Output Clock Driver
> + *
> + * Copyright (C) 2022-2023 StarFive Technology Co., Ltd.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/io.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +
> +#include <dt-bindings/clock/starfive,jh7110-crg.h>
> +
> +#include "clk-starfive-jh7110.h"
> +
> +/* external clocks */
> +#define JH7110_VOUTCLK_VOUT_SRC (JH7110_VOUTCLK_END + 0)
> +#define JH7110_VOUTCLK_VOUT_TOP_AHB (JH7110_VOUTCLK_END + 1)
> +#define JH7110_VOUTCLK_VOUT_TOP_AXI (JH7110_VOUTCLK_END + 2)
> +#define JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK (JH7110_VOUTCLK_END + 3)
> +#define JH7110_VOUTCLK_I2STX0_BCLK (JH7110_VOUTCLK_END + 4)
> +#define JH7110_VOUTCLK_HDMITX0_PIXELCLK (JH7110_VOUTCLK_END + 5)
> +#define JH7110_VOUTCLK_EXT_END (JH7110_VOUTCLK_END + 6)
> +
> +static struct clk_bulk_data jh7110_vout_top_clks[] = {
> + { .id = "vout_src" },
> + { .id = "vout_top_ahb" }
> +};
> +
> +static const struct jh71x0_clk_data jh7110_voutclk_data[] = {
> + /* divider */
> + JH71X0__DIV(JH7110_VOUTCLK_APB, "apb", 8, JH7110_VOUTCLK_VOUT_TOP_AHB),
> + JH71X0__DIV(JH7110_VOUTCLK_DC8200_PIX, "dc8200_pix", 63, JH7110_VOUTCLK_VOUT_SRC),
> + JH71X0__DIV(JH7110_VOUTCLK_DSI_SYS, "dsi_sys", 31, JH7110_VOUTCLK_VOUT_SRC),
> + JH71X0__DIV(JH7110_VOUTCLK_TX_ESC, "tx_esc", 31, JH7110_VOUTCLK_VOUT_TOP_AHB),
> + /* dc8200 */
> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_AXI, "dc8200_axi", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_CORE, "dc8200_core", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_AHB, "dc8200_ahb", 0, JH7110_VOUTCLK_VOUT_TOP_AHB),
> + JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX0, "dc8200_pix0", 0, 2,
> + JH7110_VOUTCLK_DC8200_PIX,
> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
> + JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX1, "dc8200_pix1", 0, 2,
> + JH7110_VOUTCLK_DC8200_PIX,
> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
> + /* LCD */
> + JH71X0_GMUX(JH7110_VOUTCLK_DOM_VOUT_TOP_LCD, "dom_vout_top_lcd", 0, 2,
> + JH7110_VOUTCLK_DC8200_PIX0,
> + JH7110_VOUTCLK_DC8200_PIX1),
> + /* dsiTx */
> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_APB, "dsiTx_apb", 0, JH7110_VOUTCLK_DSI_SYS),
> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_SYS, "dsiTx_sys", 0, JH7110_VOUTCLK_DSI_SYS),
> + JH71X0_GMUX(JH7110_VOUTCLK_DSITX_DPI, "dsiTx_dpi", 0, 2,
> + JH7110_VOUTCLK_DC8200_PIX,
> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_TXESC, "dsiTx_txesc", 0, JH7110_VOUTCLK_TX_ESC),
> + /* mipitx DPHY */
> + JH71X0_GATE(JH7110_VOUTCLK_MIPITX_DPHY_TXESC, "mipitx_dphy_txesc", 0,
> + JH7110_VOUTCLK_TX_ESC),
> + /* hdmi */
> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_MCLK, "hdmi_tx_mclk", 0,
> + JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK),
> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_BCLK, "hdmi_tx_bclk", 0,
> + JH7110_VOUTCLK_I2STX0_BCLK),
> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_SYS, "hdmi_tx_sys", 0, JH7110_VOUTCLK_APB),
> +};
> +
> +static int jh7110_vout_top_rst_init(struct jh71x0_clk_priv *priv)
> +{
> + struct reset_control *top_rst;
> +
> + /* The reset should be shared and other Vout modules will use its. */
> + top_rst = devm_reset_control_get_shared(priv->dev, NULL);
> + if (IS_ERR(top_rst))
> + return dev_err_probe(priv->dev, PTR_ERR(top_rst), "failed to get top reset\n");
> +
> + return reset_control_deassert(top_rst);
> +}
> +
> +static struct clk_hw *jh7110_voutclk_get(struct of_phandle_args *clkspec, void *data)
> +{
> + struct jh71x0_clk_priv *priv = data;
> + unsigned int idx = clkspec->args[0];
> +
> + if (idx < JH7110_VOUTCLK_END)
> + return &priv->reg[idx].hw;
> +
> + return ERR_PTR(-EINVAL);
> +}
> +
> +#ifdef CONFIG_PM
> +static int jh7110_voutcrg_suspend(struct device *dev)
> +{
> + struct top_sysclk *top = dev_get_drvdata(dev);
> +
> + clk_bulk_disable_unprepare(top->top_clks_num, top->top_clks);
> +
> + return 0;
> +}
> +
> +static int jh7110_voutcrg_resume(struct device *dev)
> +{
> + struct top_sysclk *top = dev_get_drvdata(dev);
> +
> + return clk_bulk_prepare_enable(top->top_clks_num, top->top_clks);
> +}
> +#endif
nit: you could move this #endif down below jh7110_voutcrg_pm_ops, and then do
.pm = pm_ptr(&jh7110_voutcrg_pm_ops),
In any case
Reviewed-by: Emil Renner Berthing <[email protected]>
> +static const struct dev_pm_ops jh7110_voutcrg_pm_ops = {
> + SET_RUNTIME_PM_OPS(jh7110_voutcrg_suspend, jh7110_voutcrg_resume, NULL)
> +};
> +
> +static int jh7110_voutcrg_probe(struct platform_device *pdev)
> +{
> + struct jh71x0_clk_priv *priv;
> + struct top_sysclk *top;
> + unsigned int idx;
> + int ret;
> +
> + priv = devm_kzalloc(&pdev->dev,
> + struct_size(priv, reg, JH7110_VOUTCLK_END),
> + GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + top = devm_kzalloc(&pdev->dev, sizeof(*top), GFP_KERNEL);
> + if (!top)
> + return -ENOMEM;
> +
> + spin_lock_init(&priv->rmw_lock);
> + priv->dev = &pdev->dev;
> + priv->base = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(priv->base))
> + return PTR_ERR(priv->base);
> +
> + top->top_clks = jh7110_vout_top_clks;
> + top->top_clks_num = ARRAY_SIZE(jh7110_vout_top_clks);
> + ret = devm_clk_bulk_get(priv->dev, top->top_clks_num, top->top_clks);
> + if (ret)
> + return dev_err_probe(priv->dev, ret, "failed to get top clocks\n");
> + dev_set_drvdata(priv->dev, top);
> +
> + /* enable power domain and clocks */
> + pm_runtime_enable(priv->dev);
> + ret = pm_runtime_get_sync(priv->dev);
> + if (ret < 0)
> + return dev_err_probe(priv->dev, ret, "failed to turn on power\n");
> +
> + ret = jh7110_vout_top_rst_init(priv);
> + if (ret)
> + goto err_exit;
> +
> + for (idx = 0; idx < JH7110_VOUTCLK_END; idx++) {
> + u32 max = jh7110_voutclk_data[idx].max;
> + struct clk_parent_data parents[4] = {};
> + struct clk_init_data init = {
> + .name = jh7110_voutclk_data[idx].name,
> + .ops = starfive_jh71x0_clk_ops(max),
> + .parent_data = parents,
> + .num_parents =
> + ((max & JH71X0_CLK_MUX_MASK) >> JH71X0_CLK_MUX_SHIFT) + 1,
> + .flags = jh7110_voutclk_data[idx].flags,
> + };
> + struct jh71x0_clk *clk = &priv->reg[idx];
> + unsigned int i;
> + const char *fw_name[JH7110_VOUTCLK_EXT_END - JH7110_VOUTCLK_END] = {
> + "vout_src",
> + "vout_top_ahb",
> + "vout_top_axi",
> + "vout_top_hdmitx0_mclk",
> + "i2stx0_bclk",
> + "hdmitx0_pixelclk"
> + };
> +
> + for (i = 0; i < init.num_parents; i++) {
> + unsigned int pidx = jh7110_voutclk_data[idx].parents[i];
> +
> + if (pidx < JH7110_VOUTCLK_END)
> + parents[i].hw = &priv->reg[pidx].hw;
> + else if (pidx < JH7110_VOUTCLK_EXT_END)
> + parents[i].fw_name = fw_name[pidx - JH7110_VOUTCLK_END];
> + }
> +
> + clk->hw.init = &init;
> + clk->idx = idx;
> + clk->max_div = max & JH71X0_CLK_DIV_MASK;
> +
> + ret = devm_clk_hw_register(&pdev->dev, &clk->hw);
> + if (ret)
> + goto err_exit;
> + }
> +
> + ret = devm_of_clk_add_hw_provider(&pdev->dev, jh7110_voutclk_get, priv);
> + if (ret)
> + goto err_exit;
> +
> + ret = jh7110_reset_controller_register(priv, "rst-vo", 4);
> + if (ret)
> + goto err_exit;
> +
> + return 0;
> +
> +err_exit:
> + pm_runtime_put_sync(priv->dev);
> + pm_runtime_disable(priv->dev);
> + return ret;
> +}
> +
> +static int jh7110_voutcrg_remove(struct platform_device *pdev)
> +{
> + pm_runtime_put_sync(&pdev->dev);
> + pm_runtime_disable(&pdev->dev);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id jh7110_voutcrg_match[] = {
> + { .compatible = "starfive,jh7110-voutcrg" },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, jh7110_voutcrg_match);
> +
> +static struct platform_driver jh7110_voutcrg_driver = {
> + .probe = jh7110_voutcrg_probe,
> + .remove = jh7110_voutcrg_remove,
> + .driver = {
> + .name = "clk-starfive-jh7110-vout",
> + .of_match_table = jh7110_voutcrg_match,
> + .pm = &jh7110_voutcrg_pm_ops,
> + },
> +};
> +module_platform_driver(jh7110_voutcrg_driver);
> +
> +MODULE_AUTHOR("Xingyu Wu <[email protected]>");
> +MODULE_DESCRIPTION("StarFive JH7110 Video-Output clock driver");
> +MODULE_LICENSE("GPL");
> --
> 2.25.1
>
>
> _______________________________________________
> linux-riscv mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-riscv
On 2023/7/13 2:08, Emil Renner Berthing wrote:
> On Wed, 12 Jul 2023 at 11:22, Xingyu Wu <[email protected]> wrote:
>>
>> Add driver for the StarFive JH7110 Video-Output clock controller.
>> And these clock controllers should power on and enable the clocks from
>> SYSCRG first before registering.
>>
>> Reviewed-by: Hal Feng <[email protected]>
>> Signed-off-by: Xingyu Wu <[email protected]>
>> ---
>> drivers/clk/starfive/Kconfig | 8 +
>> drivers/clk/starfive/Makefile | 1 +
>> .../clk/starfive/clk-starfive-jh7110-vout.c | 239 ++++++++++++++++++
>> 3 files changed, 248 insertions(+)
>> create mode 100644 drivers/clk/starfive/clk-starfive-jh7110-vout.c
>>
>> diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
>> index 13b4d08cbcd2..3fa983eb7d32 100644
>> --- a/drivers/clk/starfive/Kconfig
>> +++ b/drivers/clk/starfive/Kconfig
>> @@ -55,3 +55,11 @@ config CLK_STARFIVE_JH7110_ISP
>> help
>> Say yes here to support the Image-Signal-Process clock controller
>> on the StarFive JH7110 SoC.
>> +
>> +config CLK_STARFIVE_JH7110_VOUT
>> + tristate "StarFive JH7110 Video-Output clock support"
>> + depends on CLK_STARFIVE_JH7110_SYS && JH71XX_PMU
>> + default m if ARCH_STARFIVE
>> + help
>> + Say yes here to support the Video-Output clock controller
>> + on the StarFive JH7110 SoC.
>> diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile
>> index 76fb9f8d628b..841377e45bb6 100644
>> --- a/drivers/clk/starfive/Makefile
>> +++ b/drivers/clk/starfive/Makefile
>> @@ -8,3 +8,4 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_SYS) += clk-starfive-jh7110-sys.o
>> obj-$(CONFIG_CLK_STARFIVE_JH7110_AON) += clk-starfive-jh7110-aon.o
>> obj-$(CONFIG_CLK_STARFIVE_JH7110_STG) += clk-starfive-jh7110-stg.o
>> obj-$(CONFIG_CLK_STARFIVE_JH7110_ISP) += clk-starfive-jh7110-isp.o
>> +obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT) += clk-starfive-jh7110-vout.o
>> diff --git a/drivers/clk/starfive/clk-starfive-jh7110-vout.c b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
>> new file mode 100644
>> index 000000000000..743840e03d81
>> --- /dev/null
>> +++ b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
>> @@ -0,0 +1,239 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * StarFive JH7110 Video-Output Clock Driver
>> + *
>> + * Copyright (C) 2022-2023 StarFive Technology Co., Ltd.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/clk-provider.h>
>> +#include <linux/io.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/reset.h>
>> +
>> +#include <dt-bindings/clock/starfive,jh7110-crg.h>
>> +
>> +#include "clk-starfive-jh7110.h"
>> +
>> +/* external clocks */
>> +#define JH7110_VOUTCLK_VOUT_SRC (JH7110_VOUTCLK_END + 0)
>> +#define JH7110_VOUTCLK_VOUT_TOP_AHB (JH7110_VOUTCLK_END + 1)
>> +#define JH7110_VOUTCLK_VOUT_TOP_AXI (JH7110_VOUTCLK_END + 2)
>> +#define JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK (JH7110_VOUTCLK_END + 3)
>> +#define JH7110_VOUTCLK_I2STX0_BCLK (JH7110_VOUTCLK_END + 4)
>> +#define JH7110_VOUTCLK_HDMITX0_PIXELCLK (JH7110_VOUTCLK_END + 5)
>> +#define JH7110_VOUTCLK_EXT_END (JH7110_VOUTCLK_END + 6)
>> +
>> +static struct clk_bulk_data jh7110_vout_top_clks[] = {
>> + { .id = "vout_src" },
>> + { .id = "vout_top_ahb" }
>> +};
>> +
>> +static const struct jh71x0_clk_data jh7110_voutclk_data[] = {
>> + /* divider */
>> + JH71X0__DIV(JH7110_VOUTCLK_APB, "apb", 8, JH7110_VOUTCLK_VOUT_TOP_AHB),
>> + JH71X0__DIV(JH7110_VOUTCLK_DC8200_PIX, "dc8200_pix", 63, JH7110_VOUTCLK_VOUT_SRC),
>> + JH71X0__DIV(JH7110_VOUTCLK_DSI_SYS, "dsi_sys", 31, JH7110_VOUTCLK_VOUT_SRC),
>> + JH71X0__DIV(JH7110_VOUTCLK_TX_ESC, "tx_esc", 31, JH7110_VOUTCLK_VOUT_TOP_AHB),
>> + /* dc8200 */
>> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_AXI, "dc8200_axi", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
>> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_CORE, "dc8200_core", 0, JH7110_VOUTCLK_VOUT_TOP_AXI),
>> + JH71X0_GATE(JH7110_VOUTCLK_DC8200_AHB, "dc8200_ahb", 0, JH7110_VOUTCLK_VOUT_TOP_AHB),
>> + JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX0, "dc8200_pix0", 0, 2,
>> + JH7110_VOUTCLK_DC8200_PIX,
>> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
>> + JH71X0_GMUX(JH7110_VOUTCLK_DC8200_PIX1, "dc8200_pix1", 0, 2,
>> + JH7110_VOUTCLK_DC8200_PIX,
>> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
>> + /* LCD */
>> + JH71X0_GMUX(JH7110_VOUTCLK_DOM_VOUT_TOP_LCD, "dom_vout_top_lcd", 0, 2,
>> + JH7110_VOUTCLK_DC8200_PIX0,
>> + JH7110_VOUTCLK_DC8200_PIX1),
>> + /* dsiTx */
>> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_APB, "dsiTx_apb", 0, JH7110_VOUTCLK_DSI_SYS),
>> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_SYS, "dsiTx_sys", 0, JH7110_VOUTCLK_DSI_SYS),
>> + JH71X0_GMUX(JH7110_VOUTCLK_DSITX_DPI, "dsiTx_dpi", 0, 2,
>> + JH7110_VOUTCLK_DC8200_PIX,
>> + JH7110_VOUTCLK_HDMITX0_PIXELCLK),
>> + JH71X0_GATE(JH7110_VOUTCLK_DSITX_TXESC, "dsiTx_txesc", 0, JH7110_VOUTCLK_TX_ESC),
>> + /* mipitx DPHY */
>> + JH71X0_GATE(JH7110_VOUTCLK_MIPITX_DPHY_TXESC, "mipitx_dphy_txesc", 0,
>> + JH7110_VOUTCLK_TX_ESC),
>> + /* hdmi */
>> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_MCLK, "hdmi_tx_mclk", 0,
>> + JH7110_VOUTCLK_VOUT_TOP_HDMITX0_MCLK),
>> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_BCLK, "hdmi_tx_bclk", 0,
>> + JH7110_VOUTCLK_I2STX0_BCLK),
>> + JH71X0_GATE(JH7110_VOUTCLK_HDMI_TX_SYS, "hdmi_tx_sys", 0, JH7110_VOUTCLK_APB),
>> +};
>> +
>> +static int jh7110_vout_top_rst_init(struct jh71x0_clk_priv *priv)
>> +{
>> + struct reset_control *top_rst;
>> +
>> + /* The reset should be shared and other Vout modules will use its. */
>> + top_rst = devm_reset_control_get_shared(priv->dev, NULL);
>> + if (IS_ERR(top_rst))
>> + return dev_err_probe(priv->dev, PTR_ERR(top_rst), "failed to get top reset\n");
>> +
>> + return reset_control_deassert(top_rst);
>> +}
>> +
>> +static struct clk_hw *jh7110_voutclk_get(struct of_phandle_args *clkspec, void *data)
>> +{
>> + struct jh71x0_clk_priv *priv = data;
>> + unsigned int idx = clkspec->args[0];
>> +
>> + if (idx < JH7110_VOUTCLK_END)
>> + return &priv->reg[idx].hw;
>> +
>> + return ERR_PTR(-EINVAL);
>> +}
>> +
>> +#ifdef CONFIG_PM
>> +static int jh7110_voutcrg_suspend(struct device *dev)
>> +{
>> + struct top_sysclk *top = dev_get_drvdata(dev);
>> +
>> + clk_bulk_disable_unprepare(top->top_clks_num, top->top_clks);
>> +
>> + return 0;
>> +}
>> +
>> +static int jh7110_voutcrg_resume(struct device *dev)
>> +{
>> + struct top_sysclk *top = dev_get_drvdata(dev);
>> +
>> + return clk_bulk_prepare_enable(top->top_clks_num, top->top_clks);
>> +}
>> +#endif
>
> nit: you could move this #endif down below jh7110_voutcrg_pm_ops, and then do
>
> .pm = pm_ptr(&jh7110_voutcrg_pm_ops),
>
> In any case
> Reviewed-by: Emil Renner Berthing <[email protected]>
Will fix in both VOUTCRG and ISPCEG drivers. Thanks.
Best regards,
Xingyu Wu
>
>> +static const struct dev_pm_ops jh7110_voutcrg_pm_ops = {
>> + SET_RUNTIME_PM_OPS(jh7110_voutcrg_suspend, jh7110_voutcrg_resume, NULL)
>> +};
>> +
>> +static int jh7110_voutcrg_probe(struct platform_device *pdev)
>> +{
>> + struct jh71x0_clk_priv *priv;
>> + struct top_sysclk *top;
>> + unsigned int idx;
>> + int ret;
>> +
>> + priv = devm_kzalloc(&pdev->dev,
>> + struct_size(priv, reg, JH7110_VOUTCLK_END),
>> + GFP_KERNEL);
>> + if (!priv)
>> + return -ENOMEM;
>> +
>> + top = devm_kzalloc(&pdev->dev, sizeof(*top), GFP_KERNEL);
>> + if (!top)
>> + return -ENOMEM;
>> +
>> + spin_lock_init(&priv->rmw_lock);
>> + priv->dev = &pdev->dev;
>> + priv->base = devm_platform_ioremap_resource(pdev, 0);
>> + if (IS_ERR(priv->base))
>> + return PTR_ERR(priv->base);
>> +
>> + top->top_clks = jh7110_vout_top_clks;
>> + top->top_clks_num = ARRAY_SIZE(jh7110_vout_top_clks);
>> + ret = devm_clk_bulk_get(priv->dev, top->top_clks_num, top->top_clks);
>> + if (ret)
>> + return dev_err_probe(priv->dev, ret, "failed to get top clocks\n");
>> + dev_set_drvdata(priv->dev, top);
>> +
>> + /* enable power domain and clocks */
>> + pm_runtime_enable(priv->dev);
>> + ret = pm_runtime_get_sync(priv->dev);
>> + if (ret < 0)
>> + return dev_err_probe(priv->dev, ret, "failed to turn on power\n");
>> +
>> + ret = jh7110_vout_top_rst_init(priv);
>> + if (ret)
>> + goto err_exit;
>> +
>> + for (idx = 0; idx < JH7110_VOUTCLK_END; idx++) {
>> + u32 max = jh7110_voutclk_data[idx].max;
>> + struct clk_parent_data parents[4] = {};
>> + struct clk_init_data init = {
>> + .name = jh7110_voutclk_data[idx].name,
>> + .ops = starfive_jh71x0_clk_ops(max),
>> + .parent_data = parents,
>> + .num_parents =
>> + ((max & JH71X0_CLK_MUX_MASK) >> JH71X0_CLK_MUX_SHIFT) + 1,
>> + .flags = jh7110_voutclk_data[idx].flags,
>> + };
>> + struct jh71x0_clk *clk = &priv->reg[idx];
>> + unsigned int i;
>> + const char *fw_name[JH7110_VOUTCLK_EXT_END - JH7110_VOUTCLK_END] = {
>> + "vout_src",
>> + "vout_top_ahb",
>> + "vout_top_axi",
>> + "vout_top_hdmitx0_mclk",
>> + "i2stx0_bclk",
>> + "hdmitx0_pixelclk"
>> + };
>> +
>> + for (i = 0; i < init.num_parents; i++) {
>> + unsigned int pidx = jh7110_voutclk_data[idx].parents[i];
>> +
>> + if (pidx < JH7110_VOUTCLK_END)
>> + parents[i].hw = &priv->reg[pidx].hw;
>> + else if (pidx < JH7110_VOUTCLK_EXT_END)
>> + parents[i].fw_name = fw_name[pidx - JH7110_VOUTCLK_END];
>> + }
>> +
>> + clk->hw.init = &init;
>> + clk->idx = idx;
>> + clk->max_div = max & JH71X0_CLK_DIV_MASK;
>> +
>> + ret = devm_clk_hw_register(&pdev->dev, &clk->hw);
>> + if (ret)
>> + goto err_exit;
>> + }
>> +
>> + ret = devm_of_clk_add_hw_provider(&pdev->dev, jh7110_voutclk_get, priv);
>> + if (ret)
>> + goto err_exit;
>> +
>> + ret = jh7110_reset_controller_register(priv, "rst-vo", 4);
>> + if (ret)
>> + goto err_exit;
>> +
>> + return 0;
>> +
>> +err_exit:
>> + pm_runtime_put_sync(priv->dev);
>> + pm_runtime_disable(priv->dev);
>> + return ret;
>> +}
>> +
>> +static int jh7110_voutcrg_remove(struct platform_device *pdev)
>> +{
>> + pm_runtime_put_sync(&pdev->dev);
>> + pm_runtime_disable(&pdev->dev);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct of_device_id jh7110_voutcrg_match[] = {
>> + { .compatible = "starfive,jh7110-voutcrg" },
>> + { /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(of, jh7110_voutcrg_match);
>> +
>> +static struct platform_driver jh7110_voutcrg_driver = {
>> + .probe = jh7110_voutcrg_probe,
>> + .remove = jh7110_voutcrg_remove,
>> + .driver = {
>> + .name = "clk-starfive-jh7110-vout",
>> + .of_match_table = jh7110_voutcrg_match,
>> + .pm = &jh7110_voutcrg_pm_ops,
>> + },
>> +};
>> +module_platform_driver(jh7110_voutcrg_driver);
>> +
>> +MODULE_AUTHOR("Xingyu Wu <[email protected]>");
>> +MODULE_DESCRIPTION("StarFive JH7110 Video-Output clock driver");
>> +MODULE_LICENSE("GPL");
>> --