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// 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/slab.h>
#include "q6afe.h"
#define Q6AFE_CLK(id) &(struct q6afe_clk) { \
.clk_id = id, \
.afe_clk_id = Q6AFE_##id, \
.name = #id, \
.attributes = LPASS_CLK_ATTRIBUTE_COUPLE_NO, \
.rate = 19200000, \
.hw.init = &(struct clk_init_data) { \
.ops = &clk_q6afe_ops, \
.name = #id, \
}, \
}
#define Q6AFE_VOTE_CLK(id, blkid, n) &(struct q6afe_clk) { \
.clk_id = id, \
.afe_clk_id = blkid, \
.name = #n, \
.hw.init = &(struct clk_init_data) { \
.ops = &clk_vote_q6afe_ops, \
.name = #id, \
}, \
}
struct q6afe_clk {
struct device *dev;
int clk_id;
int afe_clk_id;
char *name;
int attributes;
int rate;
uint32_t handle;
struct clk_hw hw;
};
#define to_q6afe_clk(_hw) container_of(_hw, struct q6afe_clk, hw)
struct q6afe_cc {
struct device *dev;
struct q6afe_clk **clks;
int num_clks;
};
static int clk_q6afe_prepare(struct clk_hw *hw)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
return q6afe_set_lpass_clock(clk->dev, clk->afe_clk_id, clk->attributes,
Q6AFE_LPASS_CLK_ROOT_DEFAULT, clk->rate);
}
static void clk_q6afe_unprepare(struct clk_hw *hw)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
q6afe_set_lpass_clock(clk->dev, clk->afe_clk_id, clk->attributes,
Q6AFE_LPASS_CLK_ROOT_DEFAULT, 0);
}
static int clk_q6afe_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
clk->rate = rate;
return 0;
}
static unsigned long clk_q6afe_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
return clk->rate;
}
static long clk_q6afe_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
return rate;
}
static const struct clk_ops clk_q6afe_ops = {
.prepare = clk_q6afe_prepare,
.unprepare = clk_q6afe_unprepare,
.set_rate = clk_q6afe_set_rate,
.round_rate = clk_q6afe_round_rate,
.recalc_rate = clk_q6afe_recalc_rate,
};
static int clk_vote_q6afe_block(struct clk_hw *hw)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
return q6afe_vote_lpass_core_hw(clk->dev, clk->afe_clk_id,
clk->name, &clk->handle);
}
static void clk_unvote_q6afe_block(struct clk_hw *hw)
{
struct q6afe_clk *clk = to_q6afe_clk(hw);
q6afe_unvote_lpass_core_hw(clk->dev, clk->afe_clk_id, clk->handle);
}
static const struct clk_ops clk_vote_q6afe_ops = {
.prepare = clk_vote_q6afe_block,
.unprepare = clk_unvote_q6afe_block,
};
struct q6afe_clk *q6afe_clks[Q6AFE_MAX_CLK_ID] = {
[LPASS_CLK_ID_PRI_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_MI2S_IBIT),
[LPASS_CLK_ID_PRI_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_MI2S_EBIT),
[LPASS_CLK_ID_SEC_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_MI2S_IBIT),
[LPASS_CLK_ID_SEC_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_MI2S_EBIT),
[LPASS_CLK_ID_TER_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_MI2S_IBIT),
[LPASS_CLK_ID_TER_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_MI2S_EBIT),
[LPASS_CLK_ID_QUAD_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_MI2S_IBIT),
[LPASS_CLK_ID_QUAD_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_MI2S_EBIT),
[LPASS_CLK_ID_SPEAKER_I2S_IBIT] =
Q6AFE_CLK(LPASS_CLK_ID_SPEAKER_I2S_IBIT),
[LPASS_CLK_ID_SPEAKER_I2S_EBIT] =
Q6AFE_CLK(LPASS_CLK_ID_SPEAKER_I2S_EBIT),
[LPASS_CLK_ID_SPEAKER_I2S_OSR] =
Q6AFE_CLK(LPASS_CLK_ID_SPEAKER_I2S_OSR),
[LPASS_CLK_ID_QUI_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUI_MI2S_IBIT),
[LPASS_CLK_ID_QUI_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUI_MI2S_EBIT),
[LPASS_CLK_ID_SEN_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEN_MI2S_IBIT),
[LPASS_CLK_ID_SEN_MI2S_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEN_MI2S_EBIT),
[LPASS_CLK_ID_INT0_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT0_MI2S_IBIT),
[LPASS_CLK_ID_INT1_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT1_MI2S_IBIT),
[LPASS_CLK_ID_INT2_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT2_MI2S_IBIT),
[LPASS_CLK_ID_INT3_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT3_MI2S_IBIT),
[LPASS_CLK_ID_INT4_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT4_MI2S_IBIT),
[LPASS_CLK_ID_INT5_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT5_MI2S_IBIT),
[LPASS_CLK_ID_INT6_MI2S_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_INT6_MI2S_IBIT),
[LPASS_CLK_ID_QUI_MI2S_OSR] = Q6AFE_CLK(LPASS_CLK_ID_QUI_MI2S_OSR),
[LPASS_CLK_ID_PRI_PCM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_PCM_IBIT),
[LPASS_CLK_ID_PRI_PCM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_PCM_EBIT),
[LPASS_CLK_ID_SEC_PCM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_PCM_IBIT),
[LPASS_CLK_ID_SEC_PCM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_PCM_EBIT),
[LPASS_CLK_ID_TER_PCM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_PCM_IBIT),
[LPASS_CLK_ID_TER_PCM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_PCM_EBIT),
[LPASS_CLK_ID_QUAD_PCM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_PCM_IBIT),
[LPASS_CLK_ID_QUAD_PCM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_PCM_EBIT),
[LPASS_CLK_ID_QUIN_PCM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUIN_PCM_IBIT),
[LPASS_CLK_ID_QUIN_PCM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUIN_PCM_EBIT),
[LPASS_CLK_ID_QUI_PCM_OSR] = Q6AFE_CLK(LPASS_CLK_ID_QUI_PCM_OSR),
[LPASS_CLK_ID_PRI_TDM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_TDM_IBIT),
[LPASS_CLK_ID_PRI_TDM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_PRI_TDM_EBIT),
[LPASS_CLK_ID_SEC_TDM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_TDM_IBIT),
[LPASS_CLK_ID_SEC_TDM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_SEC_TDM_EBIT),
[LPASS_CLK_ID_TER_TDM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_TDM_IBIT),
[LPASS_CLK_ID_TER_TDM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_TER_TDM_EBIT),
[LPASS_CLK_ID_QUAD_TDM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_TDM_IBIT),
[LPASS_CLK_ID_QUAD_TDM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUAD_TDM_EBIT),
[LPASS_CLK_ID_QUIN_TDM_IBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUIN_TDM_IBIT),
[LPASS_CLK_ID_QUIN_TDM_EBIT] = Q6AFE_CLK(LPASS_CLK_ID_QUIN_TDM_EBIT),
[LPASS_CLK_ID_QUIN_TDM_OSR] = Q6AFE_CLK(LPASS_CLK_ID_QUIN_TDM_OSR),
[LPASS_CLK_ID_MCLK_1] = Q6AFE_CLK(LPASS_CLK_ID_MCLK_1),
[LPASS_CLK_ID_MCLK_2] = Q6AFE_CLK(LPASS_CLK_ID_MCLK_2),
[LPASS_CLK_ID_MCLK_3] = Q6AFE_CLK(LPASS_CLK_ID_MCLK_3),
[LPASS_CLK_ID_MCLK_4] = Q6AFE_CLK(LPASS_CLK_ID_MCLK_4),
[LPASS_CLK_ID_INTERNAL_DIGITAL_CODEC_CORE] =
Q6AFE_CLK(LPASS_CLK_ID_INTERNAL_DIGITAL_CODEC_CORE),
[LPASS_CLK_ID_INT_MCLK_0] = Q6AFE_CLK(LPASS_CLK_ID_INT_MCLK_0),
[LPASS_CLK_ID_INT_MCLK_1] = Q6AFE_CLK(LPASS_CLK_ID_INT_MCLK_1),
[LPASS_CLK_ID_WSA_CORE_MCLK] = Q6AFE_CLK(LPASS_CLK_ID_WSA_CORE_MCLK),
[LPASS_CLK_ID_WSA_CORE_NPL_MCLK] =
Q6AFE_CLK(LPASS_CLK_ID_WSA_CORE_NPL_MCLK),
[LPASS_CLK_ID_VA_CORE_MCLK] = Q6AFE_CLK(LPASS_CLK_ID_VA_CORE_MCLK),
[LPASS_CLK_ID_TX_CORE_MCLK] = Q6AFE_CLK(LPASS_CLK_ID_TX_CORE_MCLK),
[LPASS_CLK_ID_TX_CORE_NPL_MCLK] =
Q6AFE_CLK(LPASS_CLK_ID_TX_CORE_NPL_MCLK),
[LPASS_CLK_ID_RX_CORE_MCLK] = Q6AFE_CLK(LPASS_CLK_ID_RX_CORE_MCLK),
[LPASS_CLK_ID_RX_CORE_NPL_MCLK] =
Q6AFE_CLK(LPASS_CLK_ID_RX_CORE_NPL_MCLK),
[LPASS_CLK_ID_VA_CORE_2X_MCLK] =
Q6AFE_CLK(LPASS_CLK_ID_VA_CORE_2X_MCLK),
[LPASS_HW_AVTIMER_VOTE] = Q6AFE_VOTE_CLK(LPASS_HW_AVTIMER_VOTE,
Q6AFE_LPASS_CORE_AVTIMER_BLOCK,
"LPASS_AVTIMER_MACRO"),
[LPASS_HW_MACRO_VOTE] = Q6AFE_VOTE_CLK(LPASS_HW_MACRO_VOTE,
Q6AFE_LPASS_CORE_HW_MACRO_BLOCK,
"LPASS_HW_MACRO"),
[LPASS_HW_DCODEC_VOTE] = Q6AFE_VOTE_CLK(LPASS_HW_DCODEC_VOTE,
Q6AFE_LPASS_CORE_HW_DCODEC_BLOCK,
"LPASS_HW_DCODEC"),
};
static struct clk_hw *q6afe_of_clk_hw_get(struct of_phandle_args *clkspec,
void *data)
{
struct q6afe_cc *cc = data;
unsigned int idx = clkspec->args[0];
unsigned int attr = clkspec->args[1];
if (idx >= cc->num_clks || 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);
}
static int q6afe_clock_dev_probe(struct platform_device *pdev)
{
struct q6afe_cc *cc;
struct device *dev = &pdev->dev;
int i, ret;
cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL);
if (!cc)
return -ENOMEM;
cc->clks = &q6afe_clks[0];
cc->num_clks = ARRAY_SIZE(q6afe_clks);
for (i = 0; i < ARRAY_SIZE(q6afe_clks); i++) {
if (!q6afe_clks[i])
continue;
q6afe_clks[i]->dev = dev;
ret = devm_clk_hw_register(dev, &q6afe_clks[i]->hw);
if (ret)
return ret;
}
ret = of_clk_add_hw_provider(dev->of_node, q6afe_of_clk_hw_get, cc);
if (ret)
return ret;
dev_set_drvdata(dev, cc);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id q6afe_clock_device_id[] = {
{ .compatible = "qcom,q6afe-clocks" },
{},
};
MODULE_DEVICE_TABLE(of, q6afe_clock_device_id);
#endif
static struct platform_driver q6afe_clock_platform_driver = {
.driver = {
.name = "q6afe-clock",
.of_match_table = of_match_ptr(q6afe_clock_device_id),
},
.probe = q6afe_clock_dev_probe,
};
module_platform_driver(q6afe_clock_platform_driver);
MODULE_DESCRIPTION("Q6 Audio Frontend clock driver");
MODULE_LICENSE("GPL v2");
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