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linux-rolling-lts
linux/drivers/clk/imx/clk-imx8-acm.c
Christophe JAILLET 47923f48f2 clk: imx: imx8: Fix an error handling path in imx8_acm_clk_probe() 
[ Upstream commit e9a164e367 ]

If an error occurs after a successful clk_imx_acm_attach_pm_domains() call,
it must be undone.

Add an explicit error handling path, re-order the code and add the missing
clk_imx_acm_detach_pm_domains() call.

Fixes: d3a0946d7a ("clk: imx: imx8: add audio clock mux driver")
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:05 +01:00

483 lines
16 KiB
C
Raw Permalink Blame History

// SPDX-License-Identifier: GPL-2.0+
//
// Copyright 2023 NXP
//
#include <dt-bindings/clock/imx8-clock.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "clk.h"
/**
* struct clk_imx_acm_pm_domains - structure for multi power domain
* @pd_dev: power domain device
* @pd_dev_link: power domain device link
* @num_domains: power domain nummber
*/
struct clk_imx_acm_pm_domains {
struct device **pd_dev;
struct device_link **pd_dev_link;
int num_domains;
};
/**
* struct clk_imx8_acm_sel - for clock mux
* @name: clock name
* @clkid: clock id
* @parents: clock parents
* @num_parents: clock parents number
* @reg: register offset
* @shift: bit shift in register
* @width: bits width
*/
struct clk_imx8_acm_sel {
const char *name;
int clkid;
const struct clk_parent_data *parents; /* For mux */
int num_parents;
u32 reg;
u8 shift;
u8 width;
};
/**
* struct imx8_acm_soc_data - soc specific data
* @sels: pointer to struct clk_imx8_acm_sel
* @num_sels: numbers of items
*/
struct imx8_acm_soc_data {
struct clk_imx8_acm_sel *sels;
unsigned int num_sels;
};
/**
* struct imx8_acm_priv - private structure
* @dev_pm: multi power domain
* @soc_data: pointer to soc data
* @reg: base address of registers
* @regs: save registers for suspend
*/
struct imx8_acm_priv {
struct clk_imx_acm_pm_domains dev_pm;
const struct imx8_acm_soc_data *soc_data;
void __iomem *reg;
u32 regs[IMX_ADMA_ACM_CLK_END];
};
static const struct clk_parent_data imx8qm_aud_clk_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .fw_name = "mlb_clk" },
{ .fw_name = "hdmi_rx_mclk" },
{ .fw_name = "ext_aud_mclk0" },
{ .fw_name = "ext_aud_mclk1" },
{ .fw_name = "esai0_rx_clk" },
{ .fw_name = "esai0_rx_hf_clk" },
{ .fw_name = "esai0_tx_clk" },
{ .fw_name = "esai0_tx_hf_clk" },
{ .fw_name = "esai1_rx_clk" },
{ .fw_name = "esai1_rx_hf_clk" },
{ .fw_name = "esai1_tx_clk" },
{ .fw_name = "esai1_tx_hf_clk" },
{ .fw_name = "spdif0_rx" },
{ .fw_name = "spdif1_rx" },
{ .fw_name = "sai0_rx_bclk" },
{ .fw_name = "sai0_tx_bclk" },
{ .fw_name = "sai1_rx_bclk" },
{ .fw_name = "sai1_tx_bclk" },
{ .fw_name = "sai2_rx_bclk" },
{ .fw_name = "sai3_rx_bclk" },
{ .fw_name = "sai4_rx_bclk" },
};
static const struct clk_parent_data imx8qm_mclk_out_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .fw_name = "mlb_clk" },
{ .fw_name = "hdmi_rx_mclk" },
{ .fw_name = "spdif0_rx" },
{ .fw_name = "spdif1_rx" },
{ .fw_name = "sai4_rx_bclk" },
{ .fw_name = "sai6_rx_bclk" },
};
static const struct clk_parent_data imx8qm_mclk_sels[] = {
{ .fw_name = "aud_pll_div_clk0_lpcg_clk" },
{ .fw_name = "aud_pll_div_clk1_lpcg_clk" },
{ .fw_name = "acm_aud_clk0_sel" },
{ .fw_name = "acm_aud_clk1_sel" },
};
static const struct clk_parent_data imx8qm_asrc_mux_clk_sels[] = {
{ .fw_name = "sai4_rx_bclk" },
{ .fw_name = "sai5_tx_bclk" },
{ .index = -1 },
{ .fw_name = "mlb_clk" },
};
static struct clk_imx8_acm_sel imx8qm_sels[] = {
{ "acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8qm_aud_clk_sels, ARRAY_SIZE(imx8qm_aud_clk_sels), 0x000000, 0, 5 },
{ "acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8qm_aud_clk_sels, ARRAY_SIZE(imx8qm_aud_clk_sels), 0x010000, 0, 5 },
{ "acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8qm_mclk_out_sels, ARRAY_SIZE(imx8qm_mclk_out_sels), 0x020000, 0, 3 },
{ "acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8qm_mclk_out_sels, ARRAY_SIZE(imx8qm_mclk_out_sels), 0x030000, 0, 3 },
{ "acm_asrc0_mclk_sel", IMX_ADMA_ACM_ASRC0_MUX_CLK_SEL, imx8qm_asrc_mux_clk_sels, ARRAY_SIZE(imx8qm_asrc_mux_clk_sels), 0x040000, 0, 2 },
{ "acm_esai0_mclk_sel", IMX_ADMA_ACM_ESAI0_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x060000, 0, 2 },
{ "acm_esai1_mclk_sel", IMX_ADMA_ACM_ESAI1_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x070000, 0, 2 },
{ "acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x0E0000, 0, 2 },
{ "acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x0F0000, 0, 2 },
{ "acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x100000, 0, 2 },
{ "acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x110000, 0, 2 },
{ "acm_sai4_mclk_sel", IMX_ADMA_ACM_SAI4_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x120000, 0, 2 },
{ "acm_sai5_mclk_sel", IMX_ADMA_ACM_SAI5_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x130000, 0, 2 },
{ "acm_sai6_mclk_sel", IMX_ADMA_ACM_SAI6_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x140000, 0, 2 },
{ "acm_sai7_mclk_sel", IMX_ADMA_ACM_SAI7_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x150000, 0, 2 },
{ "acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1A0000, 0, 2 },
{ "acm_spdif1_mclk_sel", IMX_ADMA_ACM_SPDIF1_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1B0000, 0, 2 },
{ "acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1C0000, 0, 2 },
};
static const struct clk_parent_data imx8qxp_aud_clk_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .fw_name = "ext_aud_mclk0" },
{ .fw_name = "ext_aud_mclk1" },
{ .fw_name = "esai0_rx_clk" },
{ .fw_name = "esai0_rx_hf_clk" },
{ .fw_name = "esai0_tx_clk" },
{ .fw_name = "esai0_tx_hf_clk" },
{ .fw_name = "spdif0_rx" },
{ .fw_name = "sai0_rx_bclk" },
{ .fw_name = "sai0_tx_bclk" },
{ .fw_name = "sai1_rx_bclk" },
{ .fw_name = "sai1_tx_bclk" },
{ .fw_name = "sai2_rx_bclk" },
{ .fw_name = "sai3_rx_bclk" },
};
static const struct clk_parent_data imx8qxp_mclk_out_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .index = -1 },
{ .index = -1 },
{ .fw_name = "spdif0_rx" },
{ .index = -1 },
{ .index = -1 },
{ .fw_name = "sai4_rx_bclk" },
};
static const struct clk_parent_data imx8qxp_mclk_sels[] = {
{ .fw_name = "aud_pll_div_clk0_lpcg_clk" },
{ .fw_name = "aud_pll_div_clk1_lpcg_clk" },
{ .fw_name = "acm_aud_clk0_sel" },
{ .fw_name = "acm_aud_clk1_sel" },
};
static struct clk_imx8_acm_sel imx8qxp_sels[] = {
{ "acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8qxp_aud_clk_sels, ARRAY_SIZE(imx8qxp_aud_clk_sels), 0x000000, 0, 5 },
{ "acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8qxp_aud_clk_sels, ARRAY_SIZE(imx8qxp_aud_clk_sels), 0x010000, 0, 5 },
{ "acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8qxp_mclk_out_sels, ARRAY_SIZE(imx8qxp_mclk_out_sels), 0x020000, 0, 3 },
{ "acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8qxp_mclk_out_sels, ARRAY_SIZE(imx8qxp_mclk_out_sels), 0x030000, 0, 3 },
{ "acm_esai0_mclk_sel", IMX_ADMA_ACM_ESAI0_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x060000, 0, 2 },
{ "acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x0E0000, 0, 2 },
{ "acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x0F0000, 0, 2 },
{ "acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x100000, 0, 2 },
{ "acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x110000, 0, 2 },
{ "acm_sai4_mclk_sel", IMX_ADMA_ACM_SAI4_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x140000, 0, 2 },
{ "acm_sai5_mclk_sel", IMX_ADMA_ACM_SAI5_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x150000, 0, 2 },
{ "acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x1A0000, 0, 2 },
{ "acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x1C0000, 0, 2 },
};
static const struct clk_parent_data imx8dxl_aud_clk_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .fw_name = "ext_aud_mclk0" },
{ .fw_name = "ext_aud_mclk1" },
{ .index = -1 },
{ .index = -1 },
{ .index = -1 },
{ .index = -1 },
{ .fw_name = "spdif0_rx" },
{ .fw_name = "sai0_rx_bclk" },
{ .fw_name = "sai0_tx_bclk" },
{ .fw_name = "sai1_rx_bclk" },
{ .fw_name = "sai1_tx_bclk" },
{ .fw_name = "sai2_rx_bclk" },
{ .fw_name = "sai3_rx_bclk" },
};
static const struct clk_parent_data imx8dxl_mclk_out_sels[] = {
{ .fw_name = "aud_rec_clk0_lpcg_clk" },
{ .fw_name = "aud_rec_clk1_lpcg_clk" },
{ .index = -1 },
{ .index = -1 },
{ .fw_name = "spdif0_rx" },
{ .index = -1 },
{ .index = -1 },
{ .index = -1 },
};
static const struct clk_parent_data imx8dxl_mclk_sels[] = {
{ .fw_name = "aud_pll_div_clk0_lpcg_clk" },
{ .fw_name = "aud_pll_div_clk1_lpcg_clk" },
{ .fw_name = "acm_aud_clk0_sel" },
{ .fw_name = "acm_aud_clk1_sel" },
};
static struct clk_imx8_acm_sel imx8dxl_sels[] = {
{ "acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8dxl_aud_clk_sels, ARRAY_SIZE(imx8dxl_aud_clk_sels), 0x000000, 0, 5 },
{ "acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8dxl_aud_clk_sels, ARRAY_SIZE(imx8dxl_aud_clk_sels), 0x010000, 0, 5 },
{ "acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8dxl_mclk_out_sels, ARRAY_SIZE(imx8dxl_mclk_out_sels), 0x020000, 0, 3 },
{ "acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8dxl_mclk_out_sels, ARRAY_SIZE(imx8dxl_mclk_out_sels), 0x030000, 0, 3 },
{ "acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x0E0000, 0, 2 },
{ "acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x0F0000, 0, 2 },
{ "acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x100000, 0, 2 },
{ "acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x110000, 0, 2 },
{ "acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x1A0000, 0, 2 },
{ "acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x1C0000, 0, 2 },
};
/**
* clk_imx_acm_attach_pm_domains: attach multi power domains
* @dev: device pointer
* @dev_pm: power domains for device
*/
static int clk_imx_acm_attach_pm_domains(struct device *dev,
struct clk_imx_acm_pm_domains *dev_pm)
{
int ret;
int i;
dev_pm->num_domains = of_count_phandle_with_args(dev->of_node, "power-domains",
"#power-domain-cells");
if (dev_pm->num_domains <= 1)
return 0;
dev_pm->pd_dev = devm_kmalloc_array(dev, dev_pm->num_domains,
sizeof(*dev_pm->pd_dev),
GFP_KERNEL);
if (!dev_pm->pd_dev)
return -ENOMEM;
dev_pm->pd_dev_link = devm_kmalloc_array(dev,
dev_pm->num_domains,
sizeof(*dev_pm->pd_dev_link),
GFP_KERNEL);
if (!dev_pm->pd_dev_link)
return -ENOMEM;
for (i = 0; i < dev_pm->num_domains; i++) {
dev_pm->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
if (IS_ERR(dev_pm->pd_dev[i])) {
ret = PTR_ERR(dev_pm->pd_dev[i]);
goto detach_pm;
}
dev_pm->pd_dev_link[i] = device_link_add(dev,
dev_pm->pd_dev[i],
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
if (IS_ERR(dev_pm->pd_dev_link[i])) {
dev_pm_domain_detach(dev_pm->pd_dev[i], false);
ret = PTR_ERR(dev_pm->pd_dev_link[i]);
goto detach_pm;
}
}
return 0;
detach_pm:
while (--i >= 0) {
device_link_del(dev_pm->pd_dev_link[i]);
dev_pm_domain_detach(dev_pm->pd_dev[i], false);
}
return ret;
}
/**
* clk_imx_acm_detach_pm_domains: detach multi power domains
* @dev: deivice pointer
* @dev_pm: multi power domain for device
*/
static int clk_imx_acm_detach_pm_domains(struct device *dev,
struct clk_imx_acm_pm_domains *dev_pm)
{
int i;
if (dev_pm->num_domains <= 1)
return 0;
for (i = 0; i < dev_pm->num_domains; i++) {
device_link_del(dev_pm->pd_dev_link[i]);
dev_pm_domain_detach(dev_pm->pd_dev[i], false);
}
return 0;
}
static int imx8_acm_clk_probe(struct platform_device *pdev)
{
struct clk_hw_onecell_data *clk_hw_data;
struct device *dev = &pdev->dev;
struct clk_imx8_acm_sel *sels;
struct imx8_acm_priv *priv;
struct clk_hw **hws;
void __iomem *base;
int ret;
int i;
base = devm_of_iomap(dev, dev->of_node, 0, NULL);
if (WARN_ON(IS_ERR(base)))
return PTR_ERR(base);
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->reg = base;
priv->soc_data = of_device_get_match_data(dev);
platform_set_drvdata(pdev, priv);
clk_hw_data = devm_kzalloc(&pdev->dev, struct_size(clk_hw_data, hws, IMX_ADMA_ACM_CLK_END),
GFP_KERNEL);
if (!clk_hw_data)
return -ENOMEM;
clk_hw_data->num = IMX_ADMA_ACM_CLK_END;
hws = clk_hw_data->hws;
ret = clk_imx_acm_attach_pm_domains(&pdev->dev, &priv->dev_pm);
if (ret)
return ret;
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
sels = priv->soc_data->sels;
for (i = 0; i < priv->soc_data->num_sels; i++) {
hws[sels[i].clkid] = devm_clk_hw_register_mux_parent_data_table(dev,
sels[i].name, sels[i].parents,
sels[i].num_parents, 0,
base + sels[i].reg,
sels[i].shift, sels[i].width,
0, NULL, NULL);
if (IS_ERR(hws[sels[i].clkid])) {
ret = PTR_ERR(hws[sels[i].clkid]);
goto err_clk_register;
}
}
imx_check_clk_hws(hws, IMX_ADMA_ACM_CLK_END);
ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_hw_data);
if (ret < 0) {
dev_err(dev, "failed to register hws for ACM\n");
goto err_clk_register;
}
pm_runtime_put_sync(&pdev->dev);
return 0;
err_clk_register:
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
clk_imx_acm_detach_pm_domains(&pdev->dev, &priv->dev_pm);
return ret;
}
static int imx8_acm_clk_remove(struct platform_device *pdev)
{
struct imx8_acm_priv *priv = dev_get_drvdata(&pdev->dev);
pm_runtime_disable(&pdev->dev);
clk_imx_acm_detach_pm_domains(&pdev->dev, &priv->dev_pm);
return 0;
}
static const struct imx8_acm_soc_data imx8qm_acm_data = {
.sels = imx8qm_sels,
.num_sels = ARRAY_SIZE(imx8qm_sels),
};
static const struct imx8_acm_soc_data imx8qxp_acm_data = {
.sels = imx8qxp_sels,
.num_sels = ARRAY_SIZE(imx8qxp_sels),
};
static const struct imx8_acm_soc_data imx8dxl_acm_data = {
.sels = imx8dxl_sels,
.num_sels = ARRAY_SIZE(imx8dxl_sels),
};
static const struct of_device_id imx8_acm_match[] = {
{ .compatible = "fsl,imx8qm-acm", .data = &imx8qm_acm_data },
{ .compatible = "fsl,imx8qxp-acm", .data = &imx8qxp_acm_data },
{ .compatible = "fsl,imx8dxl-acm", .data = &imx8dxl_acm_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx8_acm_match);
static int __maybe_unused imx8_acm_runtime_suspend(struct device *dev)
{
struct imx8_acm_priv *priv = dev_get_drvdata(dev);
struct clk_imx8_acm_sel *sels;
int i;
sels = priv->soc_data->sels;
for (i = 0; i < priv->soc_data->num_sels; i++)
priv->regs[i] = readl_relaxed(priv->reg + sels[i].reg);
return 0;
}
static int __maybe_unused imx8_acm_runtime_resume(struct device *dev)
{
struct imx8_acm_priv *priv = dev_get_drvdata(dev);
struct clk_imx8_acm_sel *sels;
int i;
sels = priv->soc_data->sels;
for (i = 0; i < priv->soc_data->num_sels; i++)
writel_relaxed(priv->regs[i], priv->reg + sels[i].reg);
return 0;
}
static const struct dev_pm_ops imx8_acm_pm_ops = {
SET_RUNTIME_PM_OPS(imx8_acm_runtime_suspend,
imx8_acm_runtime_resume, NULL)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver imx8_acm_clk_driver = {
.driver = {
.name = "imx8-acm",
.of_match_table = imx8_acm_match,
.pm = &imx8_acm_pm_ops,
},
.probe = imx8_acm_clk_probe,
.remove = imx8_acm_clk_remove,
};
module_platform_driver(imx8_acm_clk_driver);
MODULE_AUTHOR("Shengjiu Wang <shengjiu.wang@nxp.com>");
MODULE_DESCRIPTION("Freescale i.MX8 Audio Clock Mux driver");
MODULE_LICENSE("GPL");
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