1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
3 // This file is provided under a dual BSD/GPLv2 license. When using or
4 // redistributing this file, you may do so under either license.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
8 // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
9 // Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
10 // Rander Wang <rander.wang@intel.com>
11 // Keyon Jie <yang.jie@linux.intel.com>
15 * Hardware interface for generic Intel audio DSP HDA IP
18 #include <sound/hdaudio_ext.h>
19 #include <sound/hda_register.h>
27 int hda_dsp_ctrl_link_reset(struct snd_sof_dev *sdev, bool reset)
29 unsigned long timeout;
33 /* 0 to enter reset and 1 to exit reset */
34 val = reset ? 0 : SOF_HDA_GCTL_RESET;
36 /* enter/exit HDA controller reset */
37 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_GCTL,
38 SOF_HDA_GCTL_RESET, val);
40 /* wait to enter/exit reset */
41 timeout = jiffies + msecs_to_jiffies(HDA_DSP_CTRL_RESET_TIMEOUT);
42 while (time_before(jiffies, timeout)) {
43 gctl = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, SOF_HDA_GCTL);
44 if ((gctl & SOF_HDA_GCTL_RESET) == val)
46 usleep_range(500, 1000);
49 /* enter/exit reset failed */
50 dev_err(sdev->dev, "error: failed to %s HDA controller gctl 0x%x\n",
51 reset ? "reset" : "ready", gctl);
55 int hda_dsp_ctrl_get_caps(struct snd_sof_dev *sdev)
57 struct hdac_bus *bus = sof_to_bus(sdev);
58 u32 cap, offset, feature;
61 offset = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, SOF_HDA_LLCH);
64 cap = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, offset);
66 dev_dbg(sdev->dev, "checking for capabilities at offset 0x%x\n",
67 offset & SOF_HDA_CAP_NEXT_MASK);
69 feature = (cap & SOF_HDA_CAP_ID_MASK) >> SOF_HDA_CAP_ID_OFF;
72 case SOF_HDA_PP_CAP_ID:
73 dev_dbg(sdev->dev, "found DSP capability at 0x%x\n",
75 bus->ppcap = bus->remap_addr + offset;
76 sdev->bar[HDA_DSP_PP_BAR] = bus->ppcap;
78 case SOF_HDA_SPIB_CAP_ID:
79 dev_dbg(sdev->dev, "found SPIB capability at 0x%x\n",
81 bus->spbcap = bus->remap_addr + offset;
82 sdev->bar[HDA_DSP_SPIB_BAR] = bus->spbcap;
84 case SOF_HDA_DRSM_CAP_ID:
85 dev_dbg(sdev->dev, "found DRSM capability at 0x%x\n",
87 bus->drsmcap = bus->remap_addr + offset;
88 sdev->bar[HDA_DSP_DRSM_BAR] = bus->drsmcap;
90 case SOF_HDA_GTS_CAP_ID:
91 dev_dbg(sdev->dev, "found GTS capability at 0x%x\n",
93 bus->gtscap = bus->remap_addr + offset;
95 case SOF_HDA_ML_CAP_ID:
96 dev_dbg(sdev->dev, "found ML capability at 0x%x\n",
98 bus->mlcap = bus->remap_addr + offset;
101 dev_vdbg(sdev->dev, "found capability %d at 0x%x\n",
106 offset = cap & SOF_HDA_CAP_NEXT_MASK;
107 } while (count++ <= SOF_HDA_MAX_CAPS && offset);
112 void hda_dsp_ctrl_ppcap_enable(struct snd_sof_dev *sdev, bool enable)
114 u32 val = enable ? SOF_HDA_PPCTL_GPROCEN : 0;
116 snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
117 SOF_HDA_PPCTL_GPROCEN, val);
120 void hda_dsp_ctrl_ppcap_int_enable(struct snd_sof_dev *sdev, bool enable)
122 u32 val = enable ? SOF_HDA_PPCTL_PIE : 0;
124 snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
125 SOF_HDA_PPCTL_PIE, val);
128 void hda_dsp_ctrl_misc_clock_gating(struct snd_sof_dev *sdev, bool enable)
130 u32 val = enable ? PCI_CGCTL_MISCBDCGE_MASK : 0;
132 snd_sof_pci_update_bits(sdev, PCI_CGCTL, PCI_CGCTL_MISCBDCGE_MASK, val);
136 * enable/disable audio dsp clock gating and power gating bits.
137 * This allows the HW to opportunistically power and clock gate
138 * the audio dsp when it is idle
140 int hda_dsp_ctrl_clock_power_gating(struct snd_sof_dev *sdev, bool enable)
142 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
143 struct hdac_bus *bus = sof_to_bus(sdev);
147 /* enable/disable audio dsp clock gating */
148 val = enable ? PCI_CGCTL_ADSPDCGE : 0;
149 snd_sof_pci_update_bits(sdev, PCI_CGCTL, PCI_CGCTL_ADSPDCGE, val);
151 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
152 /* enable/disable L1 support */
153 val = enable ? SOF_HDA_VS_EM2_L1SEN : 0;
154 snd_hdac_chip_updatel(bus, VS_EM2, SOF_HDA_VS_EM2_L1SEN, val);
157 /* enable/disable audio dsp power gating */
158 val = enable ? 0 : PCI_PGCTL_ADSPPGD;
159 snd_sof_pci_update_bits(sdev, PCI_PGCTL, PCI_PGCTL_ADSPPGD, val);
164 int hda_dsp_ctrl_init_chip(struct snd_sof_dev *sdev, bool full_reset)
166 struct hdac_bus *bus = sof_to_bus(sdev);
167 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
168 struct hdac_ext_link *hlink;
170 struct hdac_stream *stream;
171 int sd_offset, ret = 0;
176 hda_dsp_ctrl_misc_clock_gating(sdev, false);
179 /* reset HDA controller */
180 ret = hda_dsp_ctrl_link_reset(sdev, true);
182 dev_err(sdev->dev, "error: failed to reset HDA controller\n");
186 usleep_range(500, 1000);
188 /* exit HDA controller reset */
189 ret = hda_dsp_ctrl_link_reset(sdev, false);
191 dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
195 usleep_range(1000, 1200);
198 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
199 /* check to see if controller is ready */
200 if (!snd_hdac_chip_readb(bus, GCTL)) {
201 dev_dbg(bus->dev, "controller not ready!\n");
205 /* Accept unsolicited responses */
206 snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
209 if (!bus->codec_mask) {
210 bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
211 dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
215 /* clear stream status */
216 list_for_each_entry(stream, &bus->stream_list, list) {
217 sd_offset = SOF_STREAM_SD_OFFSET(stream);
218 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
219 sd_offset + SOF_HDA_ADSP_REG_CL_SD_STS,
220 SOF_HDA_CL_DMA_SD_INT_MASK);
224 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
225 SOF_HDA_WAKESTS_INT_MASK);
227 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
228 /* clear rirb status */
229 snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
232 /* clear interrupt status register */
233 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
234 SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
236 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
237 /* initialize the codec command I/O */
238 snd_hdac_bus_init_cmd_io(bus);
241 /* enable CIE and GIE interrupts */
242 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
243 SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
244 SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
246 /* program the position buffer */
247 if (bus->use_posbuf && bus->posbuf.addr) {
248 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_ADSP_DPLBASE,
249 (u32)bus->posbuf.addr);
250 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_ADSP_DPUBASE,
251 upper_32_bits(bus->posbuf.addr));
254 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
255 /* Reset stream-to-link mapping */
256 list_for_each_entry(hlink, &bus->hlink_list, list)
257 writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV);
260 bus->chip_init = true;
262 hda_dsp_ctrl_misc_clock_gating(sdev, true);
267 void hda_dsp_ctrl_stop_chip(struct snd_sof_dev *sdev)
269 struct hdac_bus *bus = sof_to_bus(sdev);
270 struct hdac_stream *stream;
276 /* disable interrupts in stream descriptor */
277 list_for_each_entry(stream, &bus->stream_list, list) {
278 sd_offset = SOF_STREAM_SD_OFFSET(stream);
279 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
281 SOF_HDA_ADSP_REG_CL_SD_CTL,
282 SOF_HDA_CL_DMA_SD_INT_MASK,
286 /* disable SIE for all streams */
287 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
288 SOF_HDA_INT_ALL_STREAM, 0);
290 /* disable controller CIE and GIE */
291 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
292 SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
295 /* clear stream status */
296 list_for_each_entry(stream, &bus->stream_list, list) {
297 sd_offset = SOF_STREAM_SD_OFFSET(stream);
298 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
299 sd_offset + SOF_HDA_ADSP_REG_CL_SD_STS,
300 SOF_HDA_CL_DMA_SD_INT_MASK);
304 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
305 SOF_HDA_WAKESTS_INT_MASK);
307 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
308 /* clear rirb status */
309 snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
312 /* clear interrupt status register */
313 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
314 SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
316 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
317 /* disable CORB/RIRB */
318 snd_hdac_bus_stop_cmd_io(bus);
320 /* disable position buffer */
321 if (bus->posbuf.addr) {
322 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
323 SOF_HDA_ADSP_DPLBASE, 0);
324 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
325 SOF_HDA_ADSP_DPUBASE, 0);
328 bus->chip_init = false;