[component][drivers]add clk framework (#8213)
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4a7f41531f
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e1fdc13288
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@ -971,6 +971,7 @@ menuconfig RT_USING_VIRTIO
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source "$RTT_DIR/components/drivers/ofw/Kconfig"
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source "$RTT_DIR/components/drivers/pic/Kconfig"
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source "$RTT_DIR/components/drivers/ktime/Kconfig"
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source "$RTT_DIR/components/drivers/clk/Kconfig"
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menu "Using USB"
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config RT_USING_USB
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@ -0,0 +1,5 @@
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menuconfig RT_USING_CLK
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bool "Using Common Clock Framework (CLK)"
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depends on RT_USING_DM
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select RT_USING_ADT_REF
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default y
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@ -0,0 +1,26 @@
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from building import *
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group = []
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objs = []
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if not GetDepend(['RT_USING_CLK']):
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Return('group')
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cwd = GetCurrentDir()
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list = os.listdir(cwd)
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CPPPATH = [cwd + '/../include']
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src = ['clk.c']
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if GetDepend(['RT_USING_OFW']):
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src += ['clk-fixed-rate.c']
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group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
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for d in list:
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path = os.path.join(cwd, d)
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if os.path.isfile(os.path.join(path, 'SConscript')):
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objs = objs + SConscript(os.path.join(d, 'SConscript'))
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objs = objs + group
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Return('objs')
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@ -0,0 +1,92 @@
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-11-26 GuEe-GUI first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <drivers/platform.h>
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static rt_err_t fixed_clk_ofw_init(struct rt_platform_device *pdev, struct rt_clk_fixed_rate *clk_fixed)
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{
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rt_err_t err = RT_EOK;
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rt_uint32_t rate, accuracy;
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struct rt_ofw_node *np = pdev->parent.ofw_node;
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const char *clk_name = np->name;
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if (!rt_ofw_prop_read_u32(np, "clock-frequency", &rate))
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{
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rt_ofw_prop_read_u32(np, "clock-accuracy", &accuracy);
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rt_ofw_prop_read_string(np, "clock-output-names", &clk_name);
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clk_fixed->clk.name = clk_name;
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clk_fixed->clk.rate = rate;
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clk_fixed->clk.min_rate = rate;
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clk_fixed->clk.max_rate = rate;
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clk_fixed->fixed_rate = rate;
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clk_fixed->fixed_accuracy = accuracy;
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rt_ofw_data(np) = &clk_fixed->clk;
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}
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else
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{
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err = -RT_EIO;
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}
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return err;
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}
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static rt_err_t fixed_clk_probe(struct rt_platform_device *pdev)
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{
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rt_err_t err = RT_EOK;
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struct rt_clk_fixed_rate *clk_fixed = rt_calloc(1, sizeof(*clk_fixed));
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if (clk_fixed)
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{
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err = fixed_clk_ofw_init(pdev, clk_fixed);
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}
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else
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{
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err = -RT_ENOMEM;
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}
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if (!err)
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{
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err = rt_clk_register(&clk_fixed->clk, RT_NULL);
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}
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if (err && clk_fixed)
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{
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rt_free(clk_fixed);
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}
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return err;
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}
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static const struct rt_ofw_node_id fixed_clk_ofw_ids[] =
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{
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{ .compatible = "fixed-clock" },
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{ /* sentinel */ }
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};
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static struct rt_platform_driver fixed_clk_driver =
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{
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.name = "clk-fixed-rate",
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.ids = fixed_clk_ofw_ids,
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.probe = fixed_clk_probe,
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};
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static int fixed_clk_drv_register(void)
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{
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rt_platform_driver_register(&fixed_clk_driver);
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return 0;
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}
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INIT_SUBSYS_EXPORT(fixed_clk_drv_register);
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,189 @@
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-11-26 GuEe-GUI first version
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*/
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#ifndef __CLK_H__
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#define __CLK_H__
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#include <rthw.h>
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#include <ref.h>
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#include <drivers/ofw.h>
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struct rt_clk_ops;
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struct rt_reset_control_node;
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struct rt_clk_node
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{
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/*
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* Defined as the array like this if if the CLK have multi out clocks:
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*
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* struct XYZ_single_clk
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* {
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* struct rt_clk_node parent;
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* ...
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* };
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*
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* struct XYZ_multi_clk
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* {
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* struct rt_clk_node parent[N];
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* ...
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* };
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* We assume the 'N' is the max value of element in 'clock-indices' if OFW.
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*/
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rt_list_t list;
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rt_list_t children_nodes;
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const char *name;
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const struct rt_clk_ops *ops;
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struct rt_clk_node *parent;
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struct rt_ref ref;
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rt_ubase_t rate;
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rt_ubase_t min_rate;
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rt_ubase_t max_rate;
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rt_size_t notifier_count;
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void *priv;
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struct rt_clk *clk;
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rt_size_t multi_clk;
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};
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struct rt_clk_fixed_rate
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{
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struct rt_clk_node clk;
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rt_ubase_t fixed_rate;
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rt_ubase_t fixed_accuracy;
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};
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struct rt_clk
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{
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struct rt_clk_node *clk_np;
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const char *dev_id;
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const char *con_id;
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rt_ubase_t rate;
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void *fw_node;
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void *priv;
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};
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struct rt_clk_array
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{
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rt_size_t count;
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struct rt_clk *clks[];
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};
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struct rt_clk_ops
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{
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rt_err_t (*init)(struct rt_clk *, void *fw_data);
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rt_err_t (*finit)(struct rt_clk *);
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/* API */
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rt_err_t (*prepare)(struct rt_clk *);
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void (*unprepare)(struct rt_clk *);
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rt_bool_t (*is_prepared)(struct rt_clk *);
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rt_err_t (*enable)(struct rt_clk *);
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void (*disable)(struct rt_clk *);
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rt_bool_t (*is_enabled)(struct rt_clk *);
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rt_err_t (*set_rate)(struct rt_clk *, rt_ubase_t rate, rt_ubase_t parent_rate);
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rt_err_t (*set_parent)(struct rt_clk *, struct rt_clk *parent);
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rt_err_t (*set_phase)(struct rt_clk *, int degrees);
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rt_base_t (*get_phase)(struct rt_clk *);
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rt_base_t (*round_rate)(struct rt_clk *, rt_ubase_t drate, rt_ubase_t *prate);
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};
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struct rt_clk_notifier;
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#define RT_CLK_MSG_PRE_RATE_CHANGE RT_BIT(0)
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#define RT_CLK_MSG_POST_RATE_CHANGE RT_BIT(1)
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#define RT_CLK_MSG_ABORT_RATE_CHANGE RT_BIT(2)
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typedef rt_err_t (*rt_clk_notifier_callback)(struct rt_clk_notifier *notifier,
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rt_ubase_t msg, rt_ubase_t old_rate, rt_ubase_t new_rate);
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struct rt_clk_notifier
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{
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rt_list_t list;
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struct rt_clk *clk;
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rt_clk_notifier_callback callback;
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void *priv;
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};
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rt_err_t rt_clk_register(struct rt_clk_node *clk_np, struct rt_clk_node *parent_np);
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rt_err_t rt_clk_unregister(struct rt_clk_node *clk_np);
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rt_err_t rt_clk_notifier_register(struct rt_clk *clk, struct rt_clk_notifier *notifier);
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rt_err_t rt_clk_notifier_unregister(struct rt_clk *clk, struct rt_clk_notifier *notifier);
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rt_err_t rt_clk_set_parent(struct rt_clk *clk, struct rt_clk *clk_parent);
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rt_err_t rt_clk_prepare(struct rt_clk *clk);
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rt_err_t rt_clk_unprepare(struct rt_clk *clk);
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rt_err_t rt_clk_enable(struct rt_clk *clk);
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void rt_clk_disable(struct rt_clk *clk);
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rt_err_t rt_clk_prepare_enable(struct rt_clk *clk);
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void rt_clk_disable_unprepare(struct rt_clk *clk);
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rt_err_t rt_clk_array_prepare(struct rt_clk_array *clk_arr);
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rt_err_t rt_clk_array_unprepare(struct rt_clk_array *clk_arr);
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rt_err_t rt_clk_array_enable(struct rt_clk_array *clk_arr);
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void rt_clk_array_disable(struct rt_clk_array *clk_arr);
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rt_err_t rt_clk_array_prepare_enable(struct rt_clk_array *clk_arr);
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void rt_clk_array_disable_unprepare(struct rt_clk_array *clk_arr);
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rt_err_t rt_clk_set_rate_range(struct rt_clk *clk, rt_ubase_t min, rt_ubase_t max);
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rt_err_t rt_clk_set_min_rate(struct rt_clk *clk, rt_ubase_t rate);
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rt_err_t rt_clk_set_max_rate(struct rt_clk *clk, rt_ubase_t rate);
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rt_err_t rt_clk_set_rate(struct rt_clk *clk, rt_ubase_t rate);
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rt_ubase_t rt_clk_get_rate(struct rt_clk *clk);
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rt_err_t rt_clk_set_phase(struct rt_clk *clk, int degrees);
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rt_base_t rt_clk_get_phase(struct rt_clk *clk);
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rt_base_t rt_clk_round_rate(struct rt_clk *clk, rt_ubase_t rate);
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struct rt_clk *rt_clk_get_parent(struct rt_clk *clk);
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struct rt_clk_array *rt_clk_get_array(struct rt_device *dev);
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struct rt_clk *rt_clk_get_by_index(struct rt_device *dev, int index);
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struct rt_clk *rt_clk_get_by_name(struct rt_device *dev, const char *name);
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void rt_clk_array_put(struct rt_clk_array *clk_arr);
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void rt_clk_put(struct rt_clk *clk);
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#ifdef RT_USING_OFW
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struct rt_clk_array *rt_ofw_get_clk_array(struct rt_ofw_node *np);
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struct rt_clk *rt_ofw_get_clk(struct rt_ofw_node *np, int index);
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struct rt_clk *rt_ofw_get_clk_by_name(struct rt_ofw_node *np, const char *name);
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rt_ssize_t rt_ofw_count_of_clk(struct rt_ofw_node *clk_ofw_np);
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#else
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rt_inline struct rt_clk *rt_ofw_get_clk(struct rt_ofw_node *np, int index)
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{
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return RT_NULL;
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}
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rt_inline struct rt_clk *rt_ofw_get_clk_by_name(struct rt_ofw_node *np, const char *name)
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{
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return RT_NULL;
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}
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rt_inline rt_ssize_t rt_ofw_count_of_clk(struct rt_ofw_node *clk_ofw_np)
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{
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return 0;
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}
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#endif /* RT_USING_OFW */
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#endif /* __CLK_H__ */
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@ -177,6 +177,10 @@ extern "C" {
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#include "drivers/lcd.h"
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#endif
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#ifdef RT_USING_CLK
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#include "drivers/clk.h"
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#endif /* RT_USING_CLK */
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#ifdef RT_USING_DM
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#include "drivers/core/dm.h"
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