diff options
Diffstat (limited to 'sound/soc/intel/skylake/skl.c')
| -rw-r--r-- | sound/soc/intel/skylake/skl.c | 1049 |
1 files changed, 1049 insertions, 0 deletions
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c new file mode 100644 index 000000000..50f16a0f6 --- /dev/null +++ b/sound/soc/intel/skylake/skl.c @@ -0,0 +1,1049 @@ +/* + * skl.c - Implementation of ASoC Intel SKL HD Audio driver + * + * Copyright (C) 2014-2015 Intel Corp + * Author: Jeeja KP <jeeja.kp@intel.com> + * + * Derived mostly from Intel HDA driver with following copyrights: + * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> + * PeiSen Hou <pshou@realtek.com.tw> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/platform_device.h> +#include <linux/firmware.h> +#include <linux/delay.h> +#include <sound/pcm.h> +#include <sound/soc-acpi.h> +#include <sound/soc-acpi-intel-match.h> +#include <sound/hda_register.h> +#include <sound/hdaudio.h> +#include <sound/hda_i915.h> +#include "skl.h" +#include "skl-sst-dsp.h" +#include "skl-sst-ipc.h" + +/* + * initialize the PCI registers + */ +static void skl_update_pci_byte(struct pci_dev *pci, unsigned int reg, + unsigned char mask, unsigned char val) +{ + unsigned char data; + + pci_read_config_byte(pci, reg, &data); + data &= ~mask; + data |= (val & mask); + pci_write_config_byte(pci, reg, data); +} + +static void skl_init_pci(struct skl *skl) +{ + struct hdac_bus *bus = skl_to_bus(skl); + + /* + * Clear bits 0-2 of PCI register TCSEL (at offset 0x44) + * TCSEL == Traffic Class Select Register, which sets PCI express QOS + * Ensuring these bits are 0 clears playback static on some HD Audio + * codecs. + * The PCI register TCSEL is defined in the Intel manuals. + */ + dev_dbg(bus->dev, "Clearing TCSEL\n"); + skl_update_pci_byte(skl->pci, AZX_PCIREG_TCSEL, 0x07, 0); +} + +static void update_pci_dword(struct pci_dev *pci, + unsigned int reg, u32 mask, u32 val) +{ + u32 data = 0; + + pci_read_config_dword(pci, reg, &data); + data &= ~mask; + data |= (val & mask); + pci_write_config_dword(pci, reg, data); +} + +/* + * skl_enable_miscbdcge - enable/dsiable CGCTL.MISCBDCGE bits + * + * @dev: device pointer + * @enable: enable/disable flag + */ +static void skl_enable_miscbdcge(struct device *dev, bool enable) +{ + struct pci_dev *pci = to_pci_dev(dev); + u32 val; + + val = enable ? AZX_CGCTL_MISCBDCGE_MASK : 0; + + update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_MISCBDCGE_MASK, val); +} + +/** + * skl_clock_power_gating: Enable/Disable clock and power gating + * + * @dev: Device pointer + * @enable: Enable/Disable flag + */ +static void skl_clock_power_gating(struct device *dev, bool enable) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + u32 val; + + /* Update PDCGE bit of CGCTL register */ + val = enable ? AZX_CGCTL_ADSPDCGE : 0; + update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_ADSPDCGE, val); + + /* Update L1SEN bit of EM2 register */ + val = enable ? AZX_REG_VS_EM2_L1SEN : 0; + snd_hdac_chip_updatel(bus, VS_EM2, AZX_REG_VS_EM2_L1SEN, val); + + /* Update ADSPPGD bit of PGCTL register */ + val = enable ? 0 : AZX_PGCTL_ADSPPGD; + update_pci_dword(pci, AZX_PCIREG_PGCTL, AZX_PGCTL_ADSPPGD, val); +} + +/* + * While performing reset, controller may not come back properly causing + * issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset + * (init chip) and then again set CGCTL.MISCBDCGE to 1 + */ +static int skl_init_chip(struct hdac_bus *bus, bool full_reset) +{ + struct hdac_ext_link *hlink; + int ret; + + skl_enable_miscbdcge(bus->dev, false); + ret = snd_hdac_bus_init_chip(bus, full_reset); + + /* Reset stream-to-link mapping */ + list_for_each_entry(hlink, &bus->hlink_list, list) + bus->io_ops->reg_writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV); + + skl_enable_miscbdcge(bus->dev, true); + + return ret; +} + +void skl_update_d0i3c(struct device *dev, bool enable) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + u8 reg; + int timeout = 50; + + reg = snd_hdac_chip_readb(bus, VS_D0I3C); + /* Do not write to D0I3C until command in progress bit is cleared */ + while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) { + udelay(10); + reg = snd_hdac_chip_readb(bus, VS_D0I3C); + } + + /* Highly unlikely. But if it happens, flag error explicitly */ + if (!timeout) { + dev_err(bus->dev, "Before D0I3C update: D0I3C CIP timeout\n"); + return; + } + + if (enable) + reg = reg | AZX_REG_VS_D0I3C_I3; + else + reg = reg & (~AZX_REG_VS_D0I3C_I3); + + snd_hdac_chip_writeb(bus, VS_D0I3C, reg); + + timeout = 50; + /* Wait for cmd in progress to be cleared before exiting the function */ + reg = snd_hdac_chip_readb(bus, VS_D0I3C); + while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) { + udelay(10); + reg = snd_hdac_chip_readb(bus, VS_D0I3C); + } + + /* Highly unlikely. But if it happens, flag error explicitly */ + if (!timeout) { + dev_err(bus->dev, "After D0I3C update: D0I3C CIP timeout\n"); + return; + } + + dev_dbg(bus->dev, "D0I3C register = 0x%x\n", + snd_hdac_chip_readb(bus, VS_D0I3C)); +} + +/* called from IRQ */ +static void skl_stream_update(struct hdac_bus *bus, struct hdac_stream *hstr) +{ + snd_pcm_period_elapsed(hstr->substream); +} + +static irqreturn_t skl_interrupt(int irq, void *dev_id) +{ + struct hdac_bus *bus = dev_id; + u32 status; + + if (!pm_runtime_active(bus->dev)) + return IRQ_NONE; + + spin_lock(&bus->reg_lock); + + status = snd_hdac_chip_readl(bus, INTSTS); + if (status == 0 || status == 0xffffffff) { + spin_unlock(&bus->reg_lock); + return IRQ_NONE; + } + + /* clear rirb int */ + status = snd_hdac_chip_readb(bus, RIRBSTS); + if (status & RIRB_INT_MASK) { + if (status & RIRB_INT_RESPONSE) + snd_hdac_bus_update_rirb(bus); + snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK); + } + + spin_unlock(&bus->reg_lock); + + return snd_hdac_chip_readl(bus, INTSTS) ? IRQ_WAKE_THREAD : IRQ_HANDLED; +} + +static irqreturn_t skl_threaded_handler(int irq, void *dev_id) +{ + struct hdac_bus *bus = dev_id; + u32 status; + + status = snd_hdac_chip_readl(bus, INTSTS); + + snd_hdac_bus_handle_stream_irq(bus, status, skl_stream_update); + + return IRQ_HANDLED; +} + +static int skl_acquire_irq(struct hdac_bus *bus, int do_disconnect) +{ + struct skl *skl = bus_to_skl(bus); + int ret; + + ret = request_threaded_irq(skl->pci->irq, skl_interrupt, + skl_threaded_handler, + IRQF_SHARED, + KBUILD_MODNAME, bus); + if (ret) { + dev_err(bus->dev, + "unable to grab IRQ %d, disabling device\n", + skl->pci->irq); + return ret; + } + + bus->irq = skl->pci->irq; + pci_intx(skl->pci, 1); + + return 0; +} + +static int skl_suspend_late(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + struct skl *skl = bus_to_skl(bus); + + return skl_suspend_late_dsp(skl); +} + +#ifdef CONFIG_PM +static int _skl_suspend(struct hdac_bus *bus) +{ + struct skl *skl = bus_to_skl(bus); + struct pci_dev *pci = to_pci_dev(bus->dev); + int ret; + + snd_hdac_ext_bus_link_power_down_all(bus); + + ret = skl_suspend_dsp(skl); + if (ret < 0) + return ret; + + snd_hdac_bus_stop_chip(bus); + update_pci_dword(pci, AZX_PCIREG_PGCTL, + AZX_PGCTL_LSRMD_MASK, AZX_PGCTL_LSRMD_MASK); + skl_enable_miscbdcge(bus->dev, false); + snd_hdac_bus_enter_link_reset(bus); + skl_enable_miscbdcge(bus->dev, true); + skl_cleanup_resources(skl); + + return 0; +} + +static int _skl_resume(struct hdac_bus *bus) +{ + struct skl *skl = bus_to_skl(bus); + + skl_init_pci(skl); + skl_init_chip(bus, true); + + return skl_resume_dsp(skl); +} +#endif + +#ifdef CONFIG_PM_SLEEP +/* + * power management + */ +static int skl_suspend(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + struct skl *skl = bus_to_skl(bus); + int ret = 0; + + /* + * Do not suspend if streams which are marked ignore suspend are + * running, we need to save the state for these and continue + */ + if (skl->supend_active) { + /* turn off the links and stop the CORB/RIRB DMA if it is On */ + snd_hdac_ext_bus_link_power_down_all(bus); + + if (bus->cmd_dma_state) + snd_hdac_bus_stop_cmd_io(bus); + + enable_irq_wake(bus->irq); + pci_save_state(pci); + } else { + ret = _skl_suspend(bus); + if (ret < 0) + return ret; + skl->skl_sst->fw_loaded = false; + } + + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { + ret = snd_hdac_display_power(bus, false); + if (ret < 0) + dev_err(bus->dev, + "Cannot turn OFF display power on i915\n"); + } + + return ret; +} + +static int skl_resume(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + struct skl *skl = bus_to_skl(bus); + struct hdac_ext_link *hlink = NULL; + int ret; + + /* Turned OFF in HDMI codec driver after codec reconfiguration */ + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { + ret = snd_hdac_display_power(bus, true); + if (ret < 0) { + dev_err(bus->dev, + "Cannot turn on display power on i915\n"); + return ret; + } + } + + /* + * resume only when we are not in suspend active, otherwise need to + * restore the device + */ + if (skl->supend_active) { + pci_restore_state(pci); + snd_hdac_ext_bus_link_power_up_all(bus); + disable_irq_wake(bus->irq); + /* + * turn On the links which are On before active suspend + * and start the CORB/RIRB DMA if On before + * active suspend. + */ + list_for_each_entry(hlink, &bus->hlink_list, list) { + if (hlink->ref_count) + snd_hdac_ext_bus_link_power_up(hlink); + } + + ret = 0; + if (bus->cmd_dma_state) + snd_hdac_bus_init_cmd_io(bus); + } else { + ret = _skl_resume(bus); + + /* turn off the links which are off before suspend */ + list_for_each_entry(hlink, &bus->hlink_list, list) { + if (!hlink->ref_count) + snd_hdac_ext_bus_link_power_down(hlink); + } + + if (!bus->cmd_dma_state) + snd_hdac_bus_stop_cmd_io(bus); + } + + return ret; +} +#endif /* CONFIG_PM_SLEEP */ + +#ifdef CONFIG_PM +static int skl_runtime_suspend(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + + dev_dbg(bus->dev, "in %s\n", __func__); + + return _skl_suspend(bus); +} + +static int skl_runtime_resume(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct hdac_bus *bus = pci_get_drvdata(pci); + + dev_dbg(bus->dev, "in %s\n", __func__); + + return _skl_resume(bus); +} +#endif /* CONFIG_PM */ + +static const struct dev_pm_ops skl_pm = { + SET_SYSTEM_SLEEP_PM_OPS(skl_suspend, skl_resume) + SET_RUNTIME_PM_OPS(skl_runtime_suspend, skl_runtime_resume, NULL) + .suspend_late = skl_suspend_late, +}; + +/* + * destructor + */ +static int skl_free(struct hdac_bus *bus) +{ + struct skl *skl = bus_to_skl(bus); + + skl->init_done = 0; /* to be sure */ + + snd_hdac_ext_stop_streams(bus); + + if (bus->irq >= 0) + free_irq(bus->irq, (void *)bus); + snd_hdac_bus_free_stream_pages(bus); + snd_hdac_stream_free_all(bus); + snd_hdac_link_free_all(bus); + + if (bus->remap_addr) + iounmap(bus->remap_addr); + + pci_release_regions(skl->pci); + pci_disable_device(skl->pci); + + snd_hdac_ext_bus_exit(bus); + + cancel_work_sync(&skl->probe_work); + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) + snd_hdac_i915_exit(bus); + + return 0; +} + +/* + * For each ssp there are 3 clocks (mclk/sclk/sclkfs). + * e.g. for ssp0, clocks will be named as + * "ssp0_mclk", "ssp0_sclk", "ssp0_sclkfs" + * So for skl+, there are 6 ssps, so 18 clocks will be created. + */ +static struct skl_ssp_clk skl_ssp_clks[] = { + {.name = "ssp0_mclk"}, {.name = "ssp1_mclk"}, {.name = "ssp2_mclk"}, + {.name = "ssp3_mclk"}, {.name = "ssp4_mclk"}, {.name = "ssp5_mclk"}, + {.name = "ssp0_sclk"}, {.name = "ssp1_sclk"}, {.name = "ssp2_sclk"}, + {.name = "ssp3_sclk"}, {.name = "ssp4_sclk"}, {.name = "ssp5_sclk"}, + {.name = "ssp0_sclkfs"}, {.name = "ssp1_sclkfs"}, + {.name = "ssp2_sclkfs"}, + {.name = "ssp3_sclkfs"}, {.name = "ssp4_sclkfs"}, + {.name = "ssp5_sclkfs"}, +}; + +static int skl_find_machine(struct skl *skl, void *driver_data) +{ + struct hdac_bus *bus = skl_to_bus(skl); + struct snd_soc_acpi_mach *mach = driver_data; + struct skl_machine_pdata *pdata; + + mach = snd_soc_acpi_find_machine(mach); + if (mach == NULL) { + dev_err(bus->dev, "No matching machine driver found\n"); + return -ENODEV; + } + + skl->mach = mach; + skl->fw_name = mach->fw_filename; + pdata = mach->pdata; + + if (pdata) { + skl->use_tplg_pcm = pdata->use_tplg_pcm; + pdata->dmic_num = skl_get_dmic_geo(skl); + } + + return 0; +} + +static int skl_machine_device_register(struct skl *skl) +{ + struct hdac_bus *bus = skl_to_bus(skl); + struct snd_soc_acpi_mach *mach = skl->mach; + struct platform_device *pdev; + int ret; + + pdev = platform_device_alloc(mach->drv_name, -1); + if (pdev == NULL) { + dev_err(bus->dev, "platform device alloc failed\n"); + return -EIO; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(bus->dev, "failed to add machine device\n"); + platform_device_put(pdev); + return -EIO; + } + + if (mach->pdata) + dev_set_drvdata(&pdev->dev, mach->pdata); + + skl->i2s_dev = pdev; + + return 0; +} + +static void skl_machine_device_unregister(struct skl *skl) +{ + if (skl->i2s_dev) + platform_device_unregister(skl->i2s_dev); +} + +static int skl_dmic_device_register(struct skl *skl) +{ + struct hdac_bus *bus = skl_to_bus(skl); + struct platform_device *pdev; + int ret; + + /* SKL has one dmic port, so allocate dmic device for this */ + pdev = platform_device_alloc("dmic-codec", -1); + if (!pdev) { + dev_err(bus->dev, "failed to allocate dmic device\n"); + return -ENOMEM; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(bus->dev, "failed to add dmic device: %d\n", ret); + platform_device_put(pdev); + return ret; + } + skl->dmic_dev = pdev; + + return 0; +} + +static void skl_dmic_device_unregister(struct skl *skl) +{ + if (skl->dmic_dev) + platform_device_unregister(skl->dmic_dev); +} + +static struct skl_clk_parent_src skl_clk_src[] = { + { .clk_id = SKL_XTAL, .name = "xtal" }, + { .clk_id = SKL_CARDINAL, .name = "cardinal", .rate = 24576000 }, + { .clk_id = SKL_PLL, .name = "pll", .rate = 96000000 }, +}; + +struct skl_clk_parent_src *skl_get_parent_clk(u8 clk_id) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(skl_clk_src); i++) { + if (skl_clk_src[i].clk_id == clk_id) + return &skl_clk_src[i]; + } + + return NULL; +} + +static void init_skl_xtal_rate(int pci_id) +{ + switch (pci_id) { + case 0x9d70: + case 0x9d71: + skl_clk_src[0].rate = 24000000; + return; + + default: + skl_clk_src[0].rate = 19200000; + return; + } +} + +static int skl_clock_device_register(struct skl *skl) +{ + struct platform_device_info pdevinfo = {NULL}; + struct skl_clk_pdata *clk_pdata; + + clk_pdata = devm_kzalloc(&skl->pci->dev, sizeof(*clk_pdata), + GFP_KERNEL); + if (!clk_pdata) + return -ENOMEM; + + init_skl_xtal_rate(skl->pci->device); + + clk_pdata->parent_clks = skl_clk_src; + clk_pdata->ssp_clks = skl_ssp_clks; + clk_pdata->num_clks = ARRAY_SIZE(skl_ssp_clks); + + /* Query NHLT to fill the rates and parent */ + skl_get_clks(skl, clk_pdata->ssp_clks); + clk_pdata->pvt_data = skl; + + /* Register Platform device */ + pdevinfo.parent = &skl->pci->dev; + pdevinfo.id = -1; + pdevinfo.name = "skl-ssp-clk"; + pdevinfo.data = clk_pdata; + pdevinfo.size_data = sizeof(*clk_pdata); + skl->clk_dev = platform_device_register_full(&pdevinfo); + return PTR_ERR_OR_ZERO(skl->clk_dev); +} + +static void skl_clock_device_unregister(struct skl *skl) +{ + if (skl->clk_dev) + platform_device_unregister(skl->clk_dev); +} + +/* + * Probe the given codec address + */ +static int probe_codec(struct hdac_bus *bus, int addr) +{ + unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | + (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; + unsigned int res = -1; + struct skl *skl = bus_to_skl(bus); + struct hdac_device *hdev; + + mutex_lock(&bus->cmd_mutex); + snd_hdac_bus_send_cmd(bus, cmd); + snd_hdac_bus_get_response(bus, addr, &res); + mutex_unlock(&bus->cmd_mutex); + if (res == -1) + return -EIO; + dev_dbg(bus->dev, "codec #%d probed OK\n", addr); + + hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL); + if (!hdev) + return -ENOMEM; + + return snd_hdac_ext_bus_device_init(bus, addr, hdev); +} + +/* Codec initialization */ +static void skl_codec_create(struct hdac_bus *bus) +{ + int c, max_slots; + + max_slots = HDA_MAX_CODECS; + + /* First try to probe all given codec slots */ + for (c = 0; c < max_slots; c++) { + if ((bus->codec_mask & (1 << c))) { + if (probe_codec(bus, c) < 0) { + /* + * Some BIOSen give you wrong codec addresses + * that don't exist + */ + dev_warn(bus->dev, + "Codec #%d probe error; disabling it...\n", c); + bus->codec_mask &= ~(1 << c); + /* + * More badly, accessing to a non-existing + * codec often screws up the controller bus, + * and disturbs the further communications. + * Thus if an error occurs during probing, + * better to reset the controller bus to get + * back to the sanity state. + */ + snd_hdac_bus_stop_chip(bus); + skl_init_chip(bus, true); + } + } + } +} + +static const struct hdac_bus_ops bus_core_ops = { + .command = snd_hdac_bus_send_cmd, + .get_response = snd_hdac_bus_get_response, +}; + +static int skl_i915_init(struct hdac_bus *bus) +{ + int err; + + /* + * The HDMI codec is in GPU so we need to ensure that it is powered + * up and ready for probe + */ + err = snd_hdac_i915_init(bus); + if (err < 0) + return err; + + err = snd_hdac_display_power(bus, true); + if (err < 0) + dev_err(bus->dev, "Cannot turn on display power on i915\n"); + + return err; +} + +static void skl_probe_work(struct work_struct *work) +{ + struct skl *skl = container_of(work, struct skl, probe_work); + struct hdac_bus *bus = skl_to_bus(skl); + struct hdac_ext_link *hlink = NULL; + int err; + + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { + err = skl_i915_init(bus); + if (err < 0) + return; + } + + err = skl_init_chip(bus, true); + if (err < 0) { + dev_err(bus->dev, "Init chip failed with err: %d\n", err); + goto out_err; + } + + /* codec detection */ + if (!bus->codec_mask) + dev_info(bus->dev, "no hda codecs found!\n"); + + /* create codec instances */ + skl_codec_create(bus); + + /* register platform dai and controls */ + err = skl_platform_register(bus->dev); + if (err < 0) { + dev_err(bus->dev, "platform register failed: %d\n", err); + return; + } + + if (bus->ppcap) { + err = skl_machine_device_register(skl); + if (err < 0) { + dev_err(bus->dev, "machine register failed: %d\n", err); + goto out_err; + } + } + + /* + * we are done probing so decrement link counts + */ + list_for_each_entry(hlink, &bus->hlink_list, list) + snd_hdac_ext_bus_link_put(bus, hlink); + + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { + err = snd_hdac_display_power(bus, false); + if (err < 0) { + dev_err(bus->dev, "Cannot turn off display power on i915\n"); + skl_machine_device_unregister(skl); + return; + } + } + + /* configure PM */ + pm_runtime_put_noidle(bus->dev); + pm_runtime_allow(bus->dev); + skl->init_done = 1; + + return; + +out_err: + if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) + err = snd_hdac_display_power(bus, false); +} + +/* + * constructor + */ +static int skl_create(struct pci_dev *pci, + const struct hdac_io_ops *io_ops, + struct skl **rskl) +{ + struct skl *skl; + struct hdac_bus *bus; + + int err; + + *rskl = NULL; + + err = pci_enable_device(pci); + if (err < 0) + return err; + + skl = devm_kzalloc(&pci->dev, sizeof(*skl), GFP_KERNEL); + if (!skl) { + pci_disable_device(pci); + return -ENOMEM; + } + + bus = skl_to_bus(skl); + snd_hdac_ext_bus_init(bus, &pci->dev, &bus_core_ops, io_ops, NULL); + bus->use_posbuf = 1; + skl->pci = pci; + INIT_WORK(&skl->probe_work, skl_probe_work); + bus->bdl_pos_adj = 0; + + *rskl = skl; + + return 0; +} + +static int skl_first_init(struct hdac_bus *bus) +{ + struct skl *skl = bus_to_skl(bus); + struct pci_dev *pci = skl->pci; + int err; + unsigned short gcap; + int cp_streams, pb_streams, start_idx; + + err = pci_request_regions(pci, "Skylake HD audio"); + if (err < 0) + return err; + + bus->addr = pci_resource_start(pci, 0); + bus->remap_addr = pci_ioremap_bar(pci, 0); + if (bus->remap_addr == NULL) { + dev_err(bus->dev, "ioremap error\n"); + return -ENXIO; + } + + snd_hdac_bus_reset_link(bus, true); + + snd_hdac_bus_parse_capabilities(bus); + + if (skl_acquire_irq(bus, 0) < 0) + return -EBUSY; + + pci_set_master(pci); + synchronize_irq(bus->irq); + + gcap = snd_hdac_chip_readw(bus, GCAP); + dev_dbg(bus->dev, "chipset global capabilities = 0x%x\n", gcap); + + /* allow 64bit DMA address if supported by H/W */ + if (!dma_set_mask(bus->dev, DMA_BIT_MASK(64))) { + dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(64)); + } else { + dma_set_mask(bus->dev, DMA_BIT_MASK(32)); + dma_set_coherent_mask(bus->dev, DMA_BIT_MASK(32)); + } + + /* read number of streams from GCAP register */ + cp_streams = (gcap >> 8) & 0x0f; + pb_streams = (gcap >> 12) & 0x0f; + + if (!pb_streams && !cp_streams) + return -EIO; + + bus->num_streams = cp_streams + pb_streams; + + /* initialize streams */ + snd_hdac_ext_stream_init_all + (bus, 0, cp_streams, SNDRV_PCM_STREAM_CAPTURE); + start_idx = cp_streams; + snd_hdac_ext_stream_init_all + (bus, start_idx, pb_streams, SNDRV_PCM_STREAM_PLAYBACK); + + err = snd_hdac_bus_alloc_stream_pages(bus); + if (err < 0) + return err; + + /* initialize chip */ + skl_init_pci(skl); + + return skl_init_chip(bus, true); +} + +static int skl_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + struct skl *skl; + struct hdac_bus *bus = NULL; + int err; + + /* we use ext core ops, so provide NULL for ops here */ + err = skl_create(pci, NULL, &skl); + if (err < 0) + return err; + + bus = skl_to_bus(skl); + + err = skl_first_init(bus); + if (err < 0) + goto out_free; + + skl->pci_id = pci->device; + + device_disable_async_suspend(bus->dev); + + skl->nhlt = skl_nhlt_init(bus->dev); + + if (skl->nhlt == NULL) { + err = -ENODEV; + goto out_free; + } + + err = skl_nhlt_create_sysfs(skl); + if (err < 0) + goto out_nhlt_free; + + skl_nhlt_update_topology_bin(skl); + + pci_set_drvdata(skl->pci, bus); + + /* check if dsp is there */ + if (bus->ppcap) { + /* create device for dsp clk */ + err = skl_clock_device_register(skl); + if (err < 0) + goto out_clk_free; + + err = skl_find_machine(skl, (void *)pci_id->driver_data); + if (err < 0) + goto out_nhlt_free; + + err = skl_init_dsp(skl); + if (err < 0) { + dev_dbg(bus->dev, "error failed to register dsp\n"); + goto out_nhlt_free; + } + skl->skl_sst->enable_miscbdcge = skl_enable_miscbdcge; + skl->skl_sst->clock_power_gating = skl_clock_power_gating; + } + if (bus->mlcap) + snd_hdac_ext_bus_get_ml_capabilities(bus); + + snd_hdac_bus_stop_chip(bus); + + /* create device for soc dmic */ + err = skl_dmic_device_register(skl); + if (err < 0) + goto out_dsp_free; + + schedule_work(&skl->probe_work); + + return 0; + +out_dsp_free: + skl_free_dsp(skl); +out_clk_free: + skl_clock_device_unregister(skl); +out_nhlt_free: + skl_nhlt_free(skl->nhlt); +out_free: + skl_free(bus); + + return err; +} + +static void skl_shutdown(struct pci_dev *pci) +{ + struct hdac_bus *bus = pci_get_drvdata(pci); + struct hdac_stream *s; + struct hdac_ext_stream *stream; + struct skl *skl; + + if (!bus) + return; + + skl = bus_to_skl(bus); + + if (!skl->init_done) + return; + + snd_hdac_ext_stop_streams(bus); + list_for_each_entry(s, &bus->stream_list, list) { + stream = stream_to_hdac_ext_stream(s); + snd_hdac_ext_stream_decouple(bus, stream, false); + } + + snd_hdac_bus_stop_chip(bus); +} + +static void skl_remove(struct pci_dev *pci) +{ + struct hdac_bus *bus = pci_get_drvdata(pci); + struct skl *skl = bus_to_skl(bus); + + release_firmware(skl->tplg); + + pm_runtime_get_noresume(&pci->dev); + + /* codec removal, invoke bus_device_remove */ + snd_hdac_ext_bus_device_remove(bus); + + skl->debugfs = NULL; + skl_platform_unregister(&pci->dev); + skl_free_dsp(skl); + skl_machine_device_unregister(skl); + skl_dmic_device_unregister(skl); + skl_clock_device_unregister(skl); + skl_nhlt_remove_sysfs(skl); + skl_nhlt_free(skl->nhlt); + skl_free(bus); + dev_set_drvdata(&pci->dev, NULL); +} + +/* PCI IDs */ +static const struct pci_device_id skl_ids[] = { + /* Sunrise Point-LP */ + { PCI_DEVICE(0x8086, 0x9d70), + .driver_data = (unsigned long)&snd_soc_acpi_intel_skl_machines}, + /* BXT-P */ + { PCI_DEVICE(0x8086, 0x5a98), + .driver_data = (unsigned long)&snd_soc_acpi_intel_bxt_machines}, + /* KBL */ + { PCI_DEVICE(0x8086, 0x9D71), + .driver_data = (unsigned long)&snd_soc_acpi_intel_kbl_machines}, + /* GLK */ + { PCI_DEVICE(0x8086, 0x3198), + .driver_data = (unsigned long)&snd_soc_acpi_intel_glk_machines}, + /* CNL */ + { PCI_DEVICE(0x8086, 0x9dc8), + .driver_data = (unsigned long)&snd_soc_acpi_intel_cnl_machines}, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, skl_ids); + +/* pci_driver definition */ +static struct pci_driver skl_driver = { + .name = KBUILD_MODNAME, + .id_table = skl_ids, + .probe = skl_probe, + .remove = skl_remove, + .shutdown = skl_shutdown, + .driver = { + .pm = &skl_pm, + }, +}; +module_pci_driver(skl_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Intel Skylake ASoC HDA driver"); |