[v5,04/11] ASoC: cs35l56: Move utility functions to shared file

Message ID	20230721132120.5523-5-rf@opensource.cirrus.com
State	New
Headers	show Return-Path: <alsa-devel-bounces@alsa-project.org> From: Richard Fitzgerald <rf@opensource.cirrus.com> To: <broonie@kernel.org>, <tiwai@suse.com> CC: <perex@perex.cz>, <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>, <patches@opensource.cirrus.com>, Simon Trimmer <simont@opensource.cirrus.com>, Richard Fitzgerald <rf@opensource.cirrus.com> Subject: [PATCH v5 04/11] ASoC: cs35l56: Move utility functions to shared file Date: Fri, 21 Jul 2023 14:21:13 +0100 Message-ID: <20230721132120.5523-5-rf@opensource.cirrus.com> In-Reply-To: <20230721132120.5523-1-rf@opensource.cirrus.com> References: <20230721132120.5523-1-rf@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Message-ID-Hash: 4JL77RPEENMFKRIXOGTQ3O45KQFKQXU3 Precedence: list Archived-At: <https://mailman.alsa-project.org/hyperkitty/list/alsa-devel@alsa-project.org/message/4JL77RPEENMFKRIXOGTQ3O45KQFKQXU3/>
Series	ALSA: hda: Adding support for CS35L56 on HDA systems \| expand [v5,00/11] ALSA: hda: Adding support for CS35L56 on HDA systems [v5,01/11] ASoC: cs35l56: Move shared data into a common data structure [v5,02/11] ASoC: cs35l56: Make cs35l56_system_reset() code more generic [v5,03/11] ASoC: cs35l56: Convert utility functions to use common data structure [v5,04/11] ASoC: cs35l56: Move utility functions to shared file [v5,05/11] ASoC: cs35l56: Move runtime suspend/resume to shared library [v5,06/11] ASoC: cs35l56: Move cs_dsp init into shared library [v5,07/11] ASoC: cs35l56: Move part of cs35l56_init() to shared library [v5,08/11] ASoC: cs35l56: Make common function for control port wait [v5,09/11] ASoC: cs35l56: Make a common function to shutdown the DSP [v5,10/11] ALSA: hda: Fix missing header dependencies [v5,11/11] ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier

diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h index 532796efdaa5..3d2875094a21 100644 --- a/include/sound/cs35l56.h +++ b/include/sound/cs35l56.h @@ -274,6 +274,13 @@ extern const char * const cs35l56_tx_input_texts[CS35L56_NUM_INPUT_SRC]; extern const unsigned int cs35l56_tx_input_values[CS35L56_NUM_INPUT_SRC]; int cs35l56_set_patch(struct cs35l56_base *cs35l56_base); +int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command); +int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base); +void cs35l56_wait_min_reset_pulse(void); +void cs35l56_system_reset(struct cs35l56_base *cs35l56_base, bool is_soundwire); +int cs35l56_irq_request(struct cs35l56_base *cs35l56_base, int irq); +irqreturn_t cs35l56_irq(int irq, void *data); +int cs35l56_is_fw_reload_needed(struct cs35l56_base *cs35l56_base); int cs35l56_get_bclk_freq_id(unsigned int freq); void cs35l56_fill_supply_names(struct regulator_bulk_data *data); diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 47b915f33f52..d22aede1ee8d 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -195,6 +195,214 @@ static bool cs35l56_volatile_reg(struct device *dev, unsigned int reg) } } +int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command) +{ + unsigned int val; + int ret; + + regmap_write(cs35l56_base->regmap, CS35L56_DSP_VIRTUAL1_MBOX_1, command); + ret = regmap_read_poll_timeout(cs35l56_base->regmap, CS35L56_DSP_VIRTUAL1_MBOX_1, + val, (val == 0), + CS35L56_MBOX_POLL_US, CS35L56_MBOX_TIMEOUT_US); + if (ret) { + dev_warn(cs35l56_base->dev, "MBOX command %#x failed: %d\n", command, ret); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_mbox_send, SND_SOC_CS35L56_SHARED); + +int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base) +{ + unsigned int reg; + unsigned int val; + int ret; + + if (cs35l56_base->rev < CS35L56_REVID_B0) + reg = CS35L56_DSP1_HALO_STATE_A1; + else + reg = CS35L56_DSP1_HALO_STATE; + + ret = regmap_read_poll_timeout(cs35l56_base->regmap, reg, + val, + (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE), + CS35L56_HALO_STATE_POLL_US, + CS35L56_HALO_STATE_TIMEOUT_US); + + if ((ret < 0) && (ret != -ETIMEDOUT)) { + dev_err(cs35l56_base->dev, "Failed to read HALO_STATE: %d\n", ret); + return ret; + } + + if ((ret == -ETIMEDOUT) || (val != CS35L56_HALO_STATE_BOOT_DONE)) { + dev_err(cs35l56_base->dev, "Firmware boot fail: HALO_STATE=%#x\n", val); + return -EIO; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_wait_for_firmware_boot, SND_SOC_CS35L56_SHARED); + +void cs35l56_wait_min_reset_pulse(void) +{ + /* Satisfy minimum reset pulse width spec */ + usleep_range(CS35L56_RESET_PULSE_MIN_US, 2 * CS35L56_RESET_PULSE_MIN_US); +} +EXPORT_SYMBOL_NS_GPL(cs35l56_wait_min_reset_pulse, SND_SOC_CS35L56_SHARED); + +static const struct reg_sequence cs35l56_system_reset_seq[] = { + REG_SEQ0(CS35L56_DSP_VIRTUAL1_MBOX_1, CS35L56_MBOX_CMD_SYSTEM_RESET), +}; + +void cs35l56_system_reset(struct cs35l56_base *cs35l56_base, bool is_soundwire) +{ + /* + * Must enter cache-only first so there can't be any more register + * accesses other than the controlled system reset sequence below. + */ + regcache_cache_only(cs35l56_base->regmap, true); + regmap_multi_reg_write_bypassed(cs35l56_base->regmap, + cs35l56_system_reset_seq, + ARRAY_SIZE(cs35l56_system_reset_seq)); + + /* On SoundWire the registers won't be accessible until it re-enumerates. */ + if (is_soundwire) + return; + + usleep_range(CS35L56_CONTROL_PORT_READY_US, CS35L56_CONTROL_PORT_READY_US + 400); + regcache_cache_only(cs35l56_base->regmap, false); +} +EXPORT_SYMBOL_NS_GPL(cs35l56_system_reset, SND_SOC_CS35L56_SHARED); + +int cs35l56_irq_request(struct cs35l56_base *cs35l56_base, int irq) +{ + int ret; + + if (!irq) + return 0; + + ret = devm_request_threaded_irq(cs35l56_base->dev, irq, NULL, cs35l56_irq, + IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW, + "cs35l56", cs35l56_base); + if (!ret) + cs35l56_base->irq = irq; + else + dev_err(cs35l56_base->dev, "Failed to get IRQ: %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_irq_request, SND_SOC_CS35L56_SHARED); + +irqreturn_t cs35l56_irq(int irq, void *data) +{ + struct cs35l56_base *cs35l56_base = data; + unsigned int status1 = 0, status8 = 0, status20 = 0; + unsigned int mask1, mask8, mask20; + unsigned int val; + int rv; + + irqreturn_t ret = IRQ_NONE; + + if (!cs35l56_base->init_done) + return IRQ_NONE; + + mutex_lock(&cs35l56_base->irq_lock); + + rv = pm_runtime_resume_and_get(cs35l56_base->dev); + if (rv < 0) { + dev_err(cs35l56_base->dev, "irq: failed to get pm_runtime: %d\n", rv); + goto err_unlock; + } + + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_STATUS, &val); + if ((val & CS35L56_IRQ1_STS_MASK) == 0) { + dev_dbg(cs35l56_base->dev, "Spurious IRQ: no pending interrupt\n"); + goto err; + } + + /* Ack interrupts */ + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_1, &status1); + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_1, &mask1); + status1 &= ~mask1; + regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_EINT_1, status1); + + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_8, &status8); + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_8, &mask8); + status8 &= ~mask8; + regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_EINT_8, status8); + + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_20, &status20); + regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_20, &mask20); + status20 &= ~mask20; + /* We don't want EINT20 but they default to unmasked: force mask */ + regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_MASK_20, 0xffffffff); + + dev_dbg(cs35l56_base->dev, "%s: %#x %#x\n", __func__, status1, status8); + + /* Check to see if unmasked bits are active */ + if (!status1 && !status8 && !status20) + goto err; + + if (status1 & CS35L56_AMP_SHORT_ERR_EINT1_MASK) + dev_crit(cs35l56_base->dev, "Amp short error\n"); + + if (status8 & CS35L56_TEMP_ERR_EINT1_MASK) + dev_crit(cs35l56_base->dev, "Overtemp error\n"); + + ret = IRQ_HANDLED; + +err: + pm_runtime_put(cs35l56_base->dev); +err_unlock: + mutex_unlock(&cs35l56_base->irq_lock); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_irq, SND_SOC_CS35L56_SHARED); + +int cs35l56_is_fw_reload_needed(struct cs35l56_base *cs35l56_base) +{ + unsigned int val; + int ret; + + /* Nothing to re-patch if we haven't done any patching yet. */ + if (!cs35l56_base->fw_patched) + return false; + + /* + * If we have control of RESET we will have asserted it so the firmware + * will need re-patching. + */ + if (cs35l56_base->reset_gpio) + return true; + + /* + * In secure mode FIRMWARE_MISSING is cleared by the BIOS loader so + * can't be used here to test for memory retention. + * Assume that tuning must be re-loaded. + */ + if (cs35l56_base->secured) + return true; + + ret = pm_runtime_resume_and_get(cs35l56_base->dev); + if (ret) { + dev_err(cs35l56_base->dev, "Failed to runtime_get: %d\n", ret); + return ret; + } + + ret = regmap_read(cs35l56_base->regmap, CS35L56_PROTECTION_STATUS, &val); + if (ret) + dev_err(cs35l56_base->dev, "Failed to read PROTECTION_STATUS: %d\n", ret); + else + ret = !!(val & CS35L56_FIRMWARE_MISSING); + + pm_runtime_put_autosuspend(cs35l56_base->dev); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_is_fw_reload_needed, SND_SOC_CS35L56_SHARED); + const struct cs_dsp_region cs35l56_dsp1_regions[] = { { .type = WMFW_HALO_PM_PACKED, .base = CS35L56_DSP1_PMEM_0 }, { .type = WMFW_HALO_XM_PACKED, .base = CS35L56_DSP1_XMEM_PACKED_0 }, diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c index 87e2f618850b..5598000187a7 100644 --- a/sound/soc/codecs/cs35l56.c +++ b/sound/soc/codecs/cs35l56.c @@ -34,23 +34,6 @@ static int cs35l56_dsp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event); -static int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command) -{ - unsigned int val; - int ret; - - regmap_write(cs35l56_base->regmap, CS35L56_DSP_VIRTUAL1_MBOX_1, command); - ret = regmap_read_poll_timeout(cs35l56_base->regmap, CS35L56_DSP_VIRTUAL1_MBOX_1, - val, (val == 0), - CS35L56_MBOX_POLL_US, CS35L56_MBOX_TIMEOUT_US); - if (ret) { - dev_warn(cs35l56_base->dev, "MBOX command %#x failed: %d\n", command, ret); - return ret; - } - - return 0; -} - static void cs35l56_wait_dsp_ready(struct cs35l56_private *cs35l56) { /* Wait for patching to complete */ @@ -315,92 +298,6 @@ static int cs35l56_dsp_event(struct snd_soc_dapm_widget *w, return wm_adsp_event(w, kcontrol, event); } -irqreturn_t cs35l56_irq(int irq, void *data) -{ - struct cs35l56_base *cs35l56_base = data; - unsigned int status1 = 0, status8 = 0, status20 = 0; - unsigned int mask1, mask8, mask20; - unsigned int val; - int rv; - - irqreturn_t ret = IRQ_NONE; - - if (!cs35l56_base->init_done) - return IRQ_NONE; - - mutex_lock(&cs35l56_base->irq_lock); - - rv = pm_runtime_resume_and_get(cs35l56_base->dev); - if (rv < 0) { - dev_err(cs35l56_base->dev, "irq: failed to get pm_runtime: %d\n", rv); - goto err_unlock; - } - - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_STATUS, &val); - if ((val & CS35L56_IRQ1_STS_MASK) == 0) { - dev_dbg(cs35l56_base->dev, "Spurious IRQ: no pending interrupt\n"); - goto err; - } - - /* Ack interrupts */ - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_1, &status1); - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_1, &mask1); - status1 &= ~mask1; - regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_EINT_1, status1); - - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_8, &status8); - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_8, &mask8); - status8 &= ~mask8; - regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_EINT_8, status8); - - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_EINT_20, &status20); - regmap_read(cs35l56_base->regmap, CS35L56_IRQ1_MASK_20, &mask20); - status20 &= ~mask20; - /* We don't want EINT20 but they default to unmasked: force mask */ - regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_MASK_20, 0xffffffff); - - dev_dbg(cs35l56_base->dev, "%s: %#x %#x\n", __func__, status1, status8); - - /* Check to see if unmasked bits are active */ - if (!status1 && !status8 && !status20) - goto err; - - if (status1 & CS35L56_AMP_SHORT_ERR_EINT1_MASK) - dev_crit(cs35l56_base->dev, "Amp short error\n"); - - if (status8 & CS35L56_TEMP_ERR_EINT1_MASK) - dev_crit(cs35l56_base->dev, "Overtemp error\n"); - - ret = IRQ_HANDLED; - -err: - pm_runtime_put(cs35l56_base->dev); -err_unlock: - mutex_unlock(&cs35l56_base->irq_lock); - - return ret; -} -EXPORT_SYMBOL_NS_GPL(cs35l56_irq, SND_SOC_CS35L56_CORE); - -int cs35l56_irq_request(struct cs35l56_base *cs35l56_base, int irq) -{ - int ret; - - if (!irq) - return 0; - - ret = devm_request_threaded_irq(cs35l56_base->dev, irq, NULL, cs35l56_irq, - IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW, - "cs35l56", cs35l56_base); - if (!ret) - cs35l56_base->irq = irq; - else - dev_err(cs35l56_base->dev, "Failed to get IRQ: %d\n", ret); - - return ret; -} -EXPORT_SYMBOL_NS_GPL(cs35l56_irq_request, SND_SOC_CS35L56_CORE); - static int cs35l56_asp_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(codec_dai->component); @@ -762,65 +659,6 @@ static struct snd_soc_dai_driver cs35l56_dai[] = { } }; -static int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base) -{ - unsigned int reg; - unsigned int val; - int ret; - - if (cs35l56_base->rev < CS35L56_REVID_B0) - reg = CS35L56_DSP1_HALO_STATE_A1; - else - reg = CS35L56_DSP1_HALO_STATE; - - ret = regmap_read_poll_timeout(cs35l56_base->regmap, reg, - val, - (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE), - CS35L56_HALO_STATE_POLL_US, - CS35L56_HALO_STATE_TIMEOUT_US); - - if ((ret < 0) && (ret != -ETIMEDOUT)) { - dev_err(cs35l56_base->dev, "Failed to read HALO_STATE: %d\n", ret); - return ret; - } - - if ((ret == -ETIMEDOUT) || (val != CS35L56_HALO_STATE_BOOT_DONE)) { - dev_err(cs35l56_base->dev, "Firmware boot fail: HALO_STATE=%#x\n", val); - return -EIO; - } - - return 0; -} - -static inline void cs35l56_wait_min_reset_pulse(void) -{ - /* Satisfy minimum reset pulse width spec */ - usleep_range(CS35L56_RESET_PULSE_MIN_US, 2 * CS35L56_RESET_PULSE_MIN_US); -} - -static const struct reg_sequence cs35l56_system_reset_seq[] = { - REG_SEQ0(CS35L56_DSP_VIRTUAL1_MBOX_1, CS35L56_MBOX_CMD_SYSTEM_RESET), -}; - -static void cs35l56_system_reset(struct cs35l56_base *cs35l56_base, bool is_soundwire) -{ - /* - * Must enter cache-only first so there can't be any more register - * accesses other than the controlled system reset sequence below. - */ - regcache_cache_only(cs35l56_base->regmap, true); - regmap_multi_reg_write_bypassed(cs35l56_base->regmap, - cs35l56_system_reset_seq, - ARRAY_SIZE(cs35l56_system_reset_seq)); - - /* On SoundWire the registers won't be accessible until it re-enumerates. */ - if (is_soundwire) - return; - - usleep_range(CS35L56_CONTROL_PORT_READY_US, CS35L56_CONTROL_PORT_READY_US + 400); - regcache_cache_only(cs35l56_base->regmap, false); -} - static void cs35l56_secure_patch(struct cs35l56_private *cs35l56) { int ret; @@ -1137,47 +975,6 @@ int cs35l56_runtime_resume_common(struct cs35l56_private *cs35l56) } EXPORT_SYMBOL_NS_GPL(cs35l56_runtime_resume_common, SND_SOC_CS35L56_CORE); -static int cs35l56_is_fw_reload_needed(struct cs35l56_base *cs35l56_base) -{ - unsigned int val; - int ret; - - /* Nothing to re-patch if we haven't done any patching yet. */ - if (!cs35l56_base->fw_patched) - return false; - - /* - * If we have control of RESET we will have asserted it so the firmware - * will need re-patching. - */ - if (cs35l56_base->reset_gpio) - return true; - - /* - * In secure mode FIRMWARE_MISSING is cleared by the BIOS loader so - * can't be used here to test for memory retention. - * Assume that tuning must be re-loaded. - */ - if (cs35l56_base->secured) - return true; - - ret = pm_runtime_resume_and_get(cs35l56_base->dev); - if (ret) { - dev_err(cs35l56_base->dev, "Failed to runtime_get: %d\n", ret); - return ret; - } - - ret = regmap_read(cs35l56_base->regmap, CS35L56_PROTECTION_STATUS, &val); - if (ret) - dev_err(cs35l56_base->dev, "Failed to read PROTECTION_STATUS: %d\n", ret); - else - ret = !!(val & CS35L56_FIRMWARE_MISSING); - - pm_runtime_put_autosuspend(cs35l56_base->dev); - - return ret; -} - int cs35l56_system_suspend(struct device *dev) { struct cs35l56_private *cs35l56 = dev_get_drvdata(dev);

[v5,04/11] ASoC: cs35l56: Move utility functions to shared file

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