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d92b9bcfce
Use of dev_err_probe() was missed in the i2c and sdw parts of the code, update the missing parts. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20240129152557.3221212-5-ckeepax@opensource.cirrus.com Signed-off-by: Lee Jones <lee@kernel.org>
223 lines
5.6 KiB
C
223 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* CS42L43 SoundWire driver
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*
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* Copyright (C) 2022-2023 Cirrus Logic, Inc. and
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* Cirrus Logic International Semiconductor Ltd.
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*/
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#include <linux/array_size.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/mfd/cs42l43.h>
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#include <linux/mfd/cs42l43-regs.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/pm.h>
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#include <linux/regmap.h>
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#include <linux/soundwire/sdw.h>
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#include <linux/soundwire/sdw_registers.h>
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#include <linux/soundwire/sdw_type.h>
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#include "cs42l43.h"
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#define CS42L43_SDW_PORT(port, chans) { \
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.num = port, \
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.max_ch = chans, \
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.type = SDW_DPN_FULL, \
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.max_word = 24, \
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}
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static const struct regmap_config cs42l43_sdw_regmap = {
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.reg_bits = 32,
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.reg_stride = 4,
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.val_bits = 32,
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.reg_format_endian = REGMAP_ENDIAN_LITTLE,
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.val_format_endian = REGMAP_ENDIAN_LITTLE,
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.max_register = CS42L43_MCU_RAM_MAX,
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.readable_reg = cs42l43_readable_register,
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.volatile_reg = cs42l43_volatile_register,
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.precious_reg = cs42l43_precious_register,
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.cache_type = REGCACHE_MAPLE,
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.reg_defaults = cs42l43_reg_default,
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.num_reg_defaults = ARRAY_SIZE(cs42l43_reg_default),
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};
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static const struct sdw_dpn_prop cs42l43_src_port_props[] = {
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CS42L43_SDW_PORT(1, 4),
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CS42L43_SDW_PORT(2, 2),
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CS42L43_SDW_PORT(3, 2),
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CS42L43_SDW_PORT(4, 2),
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};
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static const struct sdw_dpn_prop cs42l43_sink_port_props[] = {
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CS42L43_SDW_PORT(5, 2),
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CS42L43_SDW_PORT(6, 2),
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CS42L43_SDW_PORT(7, 2),
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};
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static int cs42l43_read_prop(struct sdw_slave *sdw)
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{
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struct sdw_slave_prop *prop = &sdw->prop;
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struct device *dev = &sdw->dev;
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int i;
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prop->use_domain_irq = true;
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prop->paging_support = true;
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prop->wake_capable = true;
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prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
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prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY |
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SDW_SCP_INT1_IMPL_DEF;
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for (i = 0; i < ARRAY_SIZE(cs42l43_src_port_props); i++)
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prop->source_ports |= BIT(cs42l43_src_port_props[i].num);
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prop->src_dpn_prop = devm_kmemdup(dev, cs42l43_src_port_props,
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sizeof(cs42l43_src_port_props), GFP_KERNEL);
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if (!prop->src_dpn_prop)
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return -ENOMEM;
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for (i = 0; i < ARRAY_SIZE(cs42l43_sink_port_props); i++)
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prop->sink_ports |= BIT(cs42l43_sink_port_props[i].num);
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prop->sink_dpn_prop = devm_kmemdup(dev, cs42l43_sink_port_props,
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sizeof(cs42l43_sink_port_props), GFP_KERNEL);
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if (!prop->sink_dpn_prop)
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return -ENOMEM;
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return 0;
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}
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static int cs42l43_sdw_update_status(struct sdw_slave *sdw, enum sdw_slave_status status)
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{
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struct cs42l43 *cs42l43 = dev_get_drvdata(&sdw->dev);
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switch (status) {
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case SDW_SLAVE_ATTACHED:
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dev_dbg(cs42l43->dev, "Device attach\n");
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sdw_write_no_pm(sdw, CS42L43_GEN_INT_MASK_1,
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CS42L43_INT_STAT_GEN1_MASK);
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cs42l43->attached = true;
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complete(&cs42l43->device_attach);
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break;
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case SDW_SLAVE_UNATTACHED:
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dev_dbg(cs42l43->dev, "Device detach\n");
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cs42l43->attached = false;
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reinit_completion(&cs42l43->device_attach);
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complete(&cs42l43->device_detach);
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break;
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default:
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break;
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}
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return 0;
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}
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static int cs42l43_sdw_interrupt(struct sdw_slave *sdw,
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struct sdw_slave_intr_status *status)
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{
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/*
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* The IRQ itself was handled through the regmap_irq handler, this is
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* just clearing up the additional Cirrus SoundWire registers that are
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* not covered by the SoundWire framework or the IRQ handler itself.
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* There is only a single bit in GEN_INT_STAT_1 and it doesn't clear if
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* IRQs are still pending so doing a read/write here after handling the
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* IRQ is fine.
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*/
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sdw_read_no_pm(sdw, CS42L43_GEN_INT_STAT_1);
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sdw_write_no_pm(sdw, CS42L43_GEN_INT_STAT_1, CS42L43_INT_STAT_GEN1_MASK);
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return 0;
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}
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static int cs42l43_sdw_bus_config(struct sdw_slave *sdw,
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struct sdw_bus_params *params)
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{
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struct cs42l43 *cs42l43 = dev_get_drvdata(&sdw->dev);
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int ret = 0;
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mutex_lock(&cs42l43->pll_lock);
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if (cs42l43->sdw_freq != params->curr_dr_freq / 2) {
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if (cs42l43->sdw_pll_active) {
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dev_err(cs42l43->dev,
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"PLL active can't change SoundWire bus clock\n");
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ret = -EBUSY;
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} else {
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cs42l43->sdw_freq = params->curr_dr_freq / 2;
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}
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}
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mutex_unlock(&cs42l43->pll_lock);
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return ret;
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}
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static const struct sdw_slave_ops cs42l43_sdw_ops = {
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.read_prop = cs42l43_read_prop,
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.update_status = cs42l43_sdw_update_status,
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.interrupt_callback = cs42l43_sdw_interrupt,
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.bus_config = cs42l43_sdw_bus_config,
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};
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static int cs42l43_sdw_probe(struct sdw_slave *sdw, const struct sdw_device_id *id)
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{
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struct cs42l43 *cs42l43;
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struct device *dev = &sdw->dev;
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cs42l43 = devm_kzalloc(dev, sizeof(*cs42l43), GFP_KERNEL);
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if (!cs42l43)
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return -ENOMEM;
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cs42l43->dev = dev;
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cs42l43->sdw = sdw;
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cs42l43->regmap = devm_regmap_init_sdw(sdw, &cs42l43_sdw_regmap);
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if (IS_ERR(cs42l43->regmap))
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return dev_err_probe(cs42l43->dev, PTR_ERR(cs42l43->regmap),
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"Failed to allocate regmap\n");
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return cs42l43_dev_probe(cs42l43);
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}
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static int cs42l43_sdw_remove(struct sdw_slave *sdw)
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{
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struct cs42l43 *cs42l43 = dev_get_drvdata(&sdw->dev);
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cs42l43_dev_remove(cs42l43);
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return 0;
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}
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static const struct sdw_device_id cs42l43_sdw_id[] = {
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SDW_SLAVE_ENTRY(0x01FA, 0x4243, 0),
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{}
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};
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MODULE_DEVICE_TABLE(sdw, cs42l43_sdw_id);
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static struct sdw_driver cs42l43_sdw_driver = {
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.driver = {
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.name = "cs42l43",
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.pm = pm_ptr(&cs42l43_pm_ops),
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},
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.probe = cs42l43_sdw_probe,
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.remove = cs42l43_sdw_remove,
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.id_table = cs42l43_sdw_id,
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.ops = &cs42l43_sdw_ops,
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};
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module_sdw_driver(cs42l43_sdw_driver);
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MODULE_IMPORT_NS(MFD_CS42L43);
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MODULE_DESCRIPTION("CS42L43 SoundWire Driver");
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MODULE_AUTHOR("Lucas Tanure <tanureal@opensource.cirrus.com>");
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MODULE_LICENSE("GPL");
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