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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c')
-rw-r--r-- | sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c b/sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c new file mode 100644 index 0000000000..4613867d11 --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020, Linaro Limited + +#include <linux/err.h> +#include <linux/init.h> +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/slab.h> +#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h> +#include "q6dsp-lpass-clocks.h" + +#define Q6DSP_MAX_CLK_ID 104 +#define Q6DSP_LPASS_CLK_ROOT_DEFAULT 0 + + +struct q6dsp_clk { + struct device *dev; + int q6dsp_clk_id; + int attributes; + int rate; + uint32_t handle; + struct clk_hw hw; +}; + +#define to_q6dsp_clk(_hw) container_of(_hw, struct q6dsp_clk, hw) + +struct q6dsp_cc { + struct device *dev; + struct q6dsp_clk *clks[Q6DSP_MAX_CLK_ID]; + const struct q6dsp_clk_desc *desc; +}; + +static int clk_q6dsp_prepare(struct clk_hw *hw) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + struct q6dsp_cc *cc = dev_get_drvdata(clk->dev); + + return cc->desc->lpass_set_clk(clk->dev, clk->q6dsp_clk_id, clk->attributes, + Q6DSP_LPASS_CLK_ROOT_DEFAULT, clk->rate); +} + +static void clk_q6dsp_unprepare(struct clk_hw *hw) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + struct q6dsp_cc *cc = dev_get_drvdata(clk->dev); + + cc->desc->lpass_set_clk(clk->dev, clk->q6dsp_clk_id, clk->attributes, + Q6DSP_LPASS_CLK_ROOT_DEFAULT, 0); +} + +static int clk_q6dsp_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + + clk->rate = rate; + + return 0; +} + +static unsigned long clk_q6dsp_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + + return clk->rate; +} + +static long clk_q6dsp_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + return rate; +} + +static const struct clk_ops clk_q6dsp_ops = { + .prepare = clk_q6dsp_prepare, + .unprepare = clk_q6dsp_unprepare, + .set_rate = clk_q6dsp_set_rate, + .round_rate = clk_q6dsp_round_rate, + .recalc_rate = clk_q6dsp_recalc_rate, +}; + +static int clk_vote_q6dsp_block(struct clk_hw *hw) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + struct q6dsp_cc *cc = dev_get_drvdata(clk->dev); + + return cc->desc->lpass_vote_clk(clk->dev, clk->q6dsp_clk_id, + clk_hw_get_name(&clk->hw), &clk->handle); +} + +static void clk_unvote_q6dsp_block(struct clk_hw *hw) +{ + struct q6dsp_clk *clk = to_q6dsp_clk(hw); + struct q6dsp_cc *cc = dev_get_drvdata(clk->dev); + + cc->desc->lpass_unvote_clk(clk->dev, clk->q6dsp_clk_id, clk->handle); +} + +static const struct clk_ops clk_vote_q6dsp_ops = { + .prepare = clk_vote_q6dsp_block, + .unprepare = clk_unvote_q6dsp_block, +}; + + +static struct clk_hw *q6dsp_of_clk_hw_get(struct of_phandle_args *clkspec, + void *data) +{ + struct q6dsp_cc *cc = data; + unsigned int idx = clkspec->args[0]; + unsigned int attr = clkspec->args[1]; + + if (idx >= Q6DSP_MAX_CLK_ID || attr > LPASS_CLK_ATTRIBUTE_COUPLE_DIVISOR) { + dev_err(cc->dev, "Invalid clk specifier (%d, %d)\n", idx, attr); + return ERR_PTR(-EINVAL); + } + + if (cc->clks[idx]) { + cc->clks[idx]->attributes = attr; + return &cc->clks[idx]->hw; + } + + return ERR_PTR(-ENOENT); +} + +int q6dsp_clock_dev_probe(struct platform_device *pdev) +{ + struct q6dsp_cc *cc; + struct device *dev = &pdev->dev; + const struct q6dsp_clk_init *q6dsp_clks; + const struct q6dsp_clk_desc *desc; + int i, ret; + + cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL); + if (!cc) + return -ENOMEM; + + desc = of_device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + cc->desc = desc; + cc->dev = dev; + q6dsp_clks = desc->clks; + + for (i = 0; i < desc->num_clks; i++) { + unsigned int id = q6dsp_clks[i].clk_id; + struct clk_init_data init = { + .name = q6dsp_clks[i].name, + }; + struct q6dsp_clk *clk; + + clk = devm_kzalloc(dev, sizeof(*clk), GFP_KERNEL); + if (!clk) + return -ENOMEM; + + clk->dev = dev; + clk->q6dsp_clk_id = q6dsp_clks[i].q6dsp_clk_id; + clk->rate = q6dsp_clks[i].rate; + clk->hw.init = &init; + + if (clk->rate) + init.ops = &clk_q6dsp_ops; + else + init.ops = &clk_vote_q6dsp_ops; + + cc->clks[id] = clk; + + ret = devm_clk_hw_register(dev, &clk->hw); + if (ret) + return ret; + } + + ret = devm_of_clk_add_hw_provider(dev, q6dsp_of_clk_hw_get, cc); + if (ret) + return ret; + + dev_set_drvdata(dev, cc); + + return 0; +} +EXPORT_SYMBOL_GPL(q6dsp_clock_dev_probe); |