ASoC: Intel: avs: Remove unused IRQ-related code

Most IRQ-related code is duplicated in the driver. Switch to the new
implementation and remove unused members.

While the change is non-trivial, from functional perspective status quo
is achieved.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20240419084857.2719593-3-cezary.rojewski@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/avs/apl.c

@@ -255,8 +255,6 @@ const struct avs_dsp_ops avs_apl_dsp_ops = {
 	.reset = avs_dsp_core_reset,
 	.stall = avs_dsp_core_stall,
 	.dsp_interrupt = avs_apl_dsp_interrupt,
-	.irq_handler = avs_irq_handler,
-	.irq_thread = avs_skl_irq_thread,
 	.int_control = avs_dsp_interrupt_control,
 	.load_basefw = avs_hda_load_basefw,
 	.load_lib = avs_hda_load_library,

sound/soc/intel/avs/avs.h

@@ -47,8 +47,6 @@ struct avs_dsp_ops {
 	int (* const reset)(struct avs_dev *, u32, bool);
 	int (* const stall)(struct avs_dev *, u32, bool);
 	irqreturn_t (* const dsp_interrupt)(struct avs_dev *);
-	irqreturn_t (* const irq_handler)(struct avs_dev *);
-	irqreturn_t (* const irq_thread)(struct avs_dev *);
 	void (* const int_control)(struct avs_dev *, bool);
 	int (* const load_basefw)(struct avs_dev *, struct firmware *);
 	int (* const load_lib)(struct avs_dev *, struct firmware *, u32);
@@ -246,7 +244,6 @@ struct avs_ipc {
 #define AVS_IPC_RET(ret) \
 	(((ret) <= 0) ? (ret) : -AVS_EIPC)
 
-irqreturn_t avs_irq_handler(struct avs_dev *adev);
 void avs_dsp_process_response(struct avs_dev *adev, u64 header);
 int avs_dsp_send_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request,
 			     struct avs_ipc_msg *reply, int timeout, const char *name);
@@ -268,8 +265,6 @@ void avs_ipc_block(struct avs_ipc *ipc);
 int avs_dsp_disable_d0ix(struct avs_dev *adev);
 int avs_dsp_enable_d0ix(struct avs_dev *adev);
 
-irqreturn_t avs_skl_irq_thread(struct avs_dev *adev);
-irqreturn_t avs_cnl_irq_thread(struct avs_dev *adev);
 void avs_skl_ipc_interrupt(struct avs_dev *adev);
 irqreturn_t avs_cnl_dsp_interrupt(struct avs_dev *adev);
 int avs_apl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period,

sound/soc/intel/avs/cldma.c

@@ -248,28 +248,6 @@ void hda_cldma_setup(struct hda_cldma *cl)
 	snd_hdac_stream_writel(cl, CL_SPBFCTL, 1);
 }
 
-static irqreturn_t cldma_irq_handler(int irq, void *dev_id)
-{
-	struct hda_cldma *cl = dev_id;
-	u32 adspis;
-
-	adspis = snd_hdac_adsp_readl(cl, AVS_ADSP_REG_ADSPIS);
-	if (adspis == UINT_MAX)
-		return IRQ_NONE;
-	if (!(adspis & AVS_ADSP_ADSPIS_CLDMA))
-		return IRQ_NONE;
-
-	cl->sd_status = snd_hdac_stream_readb(cl, SD_STS);
-	dev_warn(cl->dev, "%s sd_status: 0x%08x\n", __func__, cl->sd_status);
-
-	/* disable CLDMA interrupt */
-	snd_hdac_adsp_updatel(cl, AVS_ADSP_REG_ADSPIC, AVS_ADSP_ADSPIC_CLDMA, 0);
-
-	complete(&cl->completion);
-
-	return IRQ_HANDLED;
-}
-
 void hda_cldma_interrupt(struct hda_cldma *cl)
 {
 	/* disable CLDMA interrupt */
@@ -284,7 +262,6 @@ void hda_cldma_interrupt(struct hda_cldma *cl)
 int hda_cldma_init(struct hda_cldma *cl, struct hdac_bus *bus, void __iomem *dsp_ba,
 		   unsigned int buffer_size)
 {
-	struct pci_dev *pci = to_pci_dev(bus->dev);
 	int ret;
 
 	ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, bus->dev, buffer_size, &cl->dmab_data);
@@ -292,8 +269,10 @@ int hda_cldma_init(struct hda_cldma *cl, struct hdac_bus *bus, void __iomem *dsp
 		return ret;
 
 	ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, bus->dev, BDL_SIZE, &cl->dmab_bdl);
-	if (ret < 0)
-		goto alloc_err;
+	if (ret < 0) {
+		snd_dma_free_pages(&cl->dmab_data);
+		return ret;
+	}
 
 	cl->dev = bus->dev;
 	cl->bus = bus;
@@ -301,27 +280,11 @@ int hda_cldma_init(struct hda_cldma *cl, struct hdac_bus *bus, void __iomem *dsp
 	cl->buffer_size = buffer_size;
 	cl->sd_addr = dsp_ba + AZX_CL_SD_BASE;
 
-	ret = pci_request_irq(pci, 0, cldma_irq_handler, NULL, cl, "CLDMA");
-	if (ret < 0) {
-		dev_err(cl->dev, "Failed to request CLDMA IRQ handler: %d\n", ret);
-		goto req_err;
-	}
-
 	return 0;
-
-req_err:
-	snd_dma_free_pages(&cl->dmab_bdl);
-alloc_err:
-	snd_dma_free_pages(&cl->dmab_data);
-
-	return ret;
 }
 
 void hda_cldma_free(struct hda_cldma *cl)
 {
-	struct pci_dev *pci = to_pci_dev(cl->dev);
-
-	pci_free_irq(pci, 0, cl);
 	snd_dma_free_pages(&cl->dmab_data);
 	snd_dma_free_pages(&cl->dmab_bdl);
 }

sound/soc/intel/avs/cnl.c

@@ -10,38 +10,6 @@
 #include "avs.h"
 #include "messages.h"
 
-irqreturn_t avs_cnl_irq_thread(struct avs_dev *adev)
-{
-	union avs_reply_msg msg;
-	u32 hipctdr, hipctdd, hipctda;
-
-	hipctdr = snd_hdac_adsp_readl(adev, CNL_ADSP_REG_HIPCTDR);
-	hipctdd = snd_hdac_adsp_readl(adev, CNL_ADSP_REG_HIPCTDD);
-
-	/* Ensure DSP sent new response to process. */
-	if (!(hipctdr & CNL_ADSP_HIPCTDR_BUSY))
-		return IRQ_NONE;
-
-	msg.primary = hipctdr;
-	msg.ext.val = hipctdd;
-	avs_dsp_process_response(adev, msg.val);
-
-	/* Tell DSP we accepted its message. */
-	snd_hdac_adsp_updatel(adev, CNL_ADSP_REG_HIPCTDR,
-			      CNL_ADSP_HIPCTDR_BUSY, CNL_ADSP_HIPCTDR_BUSY);
-	/* Ack this response. */
-	snd_hdac_adsp_updatel(adev, CNL_ADSP_REG_HIPCTDA,
-			      CNL_ADSP_HIPCTDA_DONE, CNL_ADSP_HIPCTDA_DONE);
-	/* HW might have been clock gated, give some time for change to propagate. */
-	snd_hdac_adsp_readl_poll(adev, CNL_ADSP_REG_HIPCTDA, hipctda,
-				 !(hipctda & CNL_ADSP_HIPCTDA_DONE), 10, 1000);
-	/* Unmask busy interrupt. */
-	snd_hdac_adsp_updatel(adev, CNL_ADSP_REG_HIPCCTL,
-			      AVS_ADSP_HIPCCTL_BUSY, AVS_ADSP_HIPCCTL_BUSY);
-
-	return IRQ_HANDLED;
-}
-
 static void avs_cnl_ipc_interrupt(struct avs_dev *adev)
 {
 	const struct avs_spec *spec = adev->spec;
@@ -109,8 +77,6 @@ const struct avs_dsp_ops avs_cnl_dsp_ops = {
 	.reset = avs_dsp_core_reset,
 	.stall = avs_dsp_core_stall,
 	.dsp_interrupt = avs_cnl_dsp_interrupt,
-	.irq_handler = avs_irq_handler,
-	.irq_thread = avs_cnl_irq_thread,
 	.int_control = avs_dsp_interrupt_control,
 	.load_basefw = avs_hda_load_basefw,
 	.load_lib = avs_hda_load_library,

sound/soc/intel/avs/core.c

@@ -257,85 +257,6 @@ static void hdac_update_stream(struct hdac_bus *bus, struct hdac_stream *stream)
 	}
 }
 
-static irqreturn_t hdac_bus_irq_handler(int irq, void *context)
-{
-	struct hdac_bus *bus = context;
-	u32 mask, int_enable;
-	u32 status;
-	int ret = IRQ_NONE;
-
-	if (!pm_runtime_active(bus->dev))
-		return ret;
-
-	spin_lock(&bus->reg_lock);
-
-	status = snd_hdac_chip_readl(bus, INTSTS);
-	if (status == 0 || status == UINT_MAX) {
-		spin_unlock(&bus->reg_lock);
-		return ret;
-	}
-
-	/* 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);
-	}
-
-	mask = (0x1 << bus->num_streams) - 1;
-
-	status = snd_hdac_chip_readl(bus, INTSTS);
-	status &= mask;
-	if (status) {
-		/* Disable stream interrupts; Re-enable in bottom half */
-		int_enable = snd_hdac_chip_readl(bus, INTCTL);
-		snd_hdac_chip_writel(bus, INTCTL, (int_enable & (~mask)));
-		ret = IRQ_WAKE_THREAD;
-	} else {
-		ret = IRQ_HANDLED;
-	}
-
-	spin_unlock(&bus->reg_lock);
-	return ret;
-}
-
-static irqreturn_t hdac_bus_irq_thread(int irq, void *context)
-{
-	struct hdac_bus *bus = context;
-	u32 status;
-	u32 int_enable;
-	u32 mask;
-	unsigned long flags;
-
-	status = snd_hdac_chip_readl(bus, INTSTS);
-
-	snd_hdac_bus_handle_stream_irq(bus, status, hdac_update_stream);
-
-	/* Re-enable stream interrupts */
-	mask = (0x1 << bus->num_streams) - 1;
-	spin_lock_irqsave(&bus->reg_lock, flags);
-	int_enable = snd_hdac_chip_readl(bus, INTCTL);
-	snd_hdac_chip_writel(bus, INTCTL, (int_enable | mask));
-	spin_unlock_irqrestore(&bus->reg_lock, flags);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t avs_dsp_irq_handler(int irq, void *dev_id)
-{
-	struct avs_dev *adev = dev_id;
-
-	return avs_dsp_op(adev, irq_handler);
-}
-
-static irqreturn_t avs_dsp_irq_thread(int irq, void *dev_id)
-{
-	struct avs_dev *adev = dev_id;
-
-	return avs_dsp_op(adev, irq_thread);
-}
-
 static irqreturn_t avs_hda_interrupt(struct hdac_bus *bus)
 {
 	irqreturn_t ret = IRQ_NONE;
@@ -359,7 +280,6 @@ static irqreturn_t avs_hda_interrupt(struct hdac_bus *bus)
 	return ret;
 }
 
-__maybe_unused
 static irqreturn_t avs_hda_irq_handler(int irq, void *dev_id)
 {
 	struct hdac_bus *bus = dev_id;
@@ -375,7 +295,6 @@ static irqreturn_t avs_hda_irq_handler(int irq, void *dev_id)
 	return IRQ_WAKE_THREAD;
 }
 
-__maybe_unused
 static irqreturn_t avs_hda_irq_thread(int irq, void *dev_id)
 {
 	struct hdac_bus *bus = dev_id;
@@ -391,16 +310,14 @@ static irqreturn_t avs_hda_irq_thread(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-__maybe_unused
-static irqreturn_t avs_dsp_irq_handler2(int irq, void *dev_id)
+static irqreturn_t avs_dsp_irq_handler(int irq, void *dev_id)
 {
 	struct avs_dev *adev = dev_id;
 
 	return avs_hda_irq_handler(irq, &adev->base.core);
 }
 
-__maybe_unused
-static irqreturn_t avs_dsp_irq_thread2(int irq, void *dev_id)
+static irqreturn_t avs_dsp_irq_thread(int irq, void *dev_id)
 {
 	struct avs_dev *adev = dev_id;
 	struct hdac_bus *bus = &adev->base.core;
@@ -429,7 +346,7 @@ static int avs_hdac_acquire_irq(struct avs_dev *adev)
 		return ret;
 	}
 
-	ret = pci_request_irq(pci, 0, hdac_bus_irq_handler, hdac_bus_irq_thread, bus,
+	ret = pci_request_irq(pci, 0, avs_hda_irq_handler, avs_hda_irq_thread, bus,
 			      KBUILD_MODNAME);
 	if (ret < 0) {
 		dev_err(adev->dev, "Failed to request stream IRQ handler: %d\n", ret);
@@ -610,8 +527,6 @@ static void avs_pci_shutdown(struct pci_dev *pci)
 	snd_hdac_bus_stop_chip(bus);
 	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
 
-	if (avs_platattr_test(adev, CLDMA))
-		pci_free_irq(pci, 0, &code_loader);
 	pci_free_irq(pci, 0, adev);
 	pci_free_irq(pci, 0, bus);
 	pci_free_irq_vectors(pci);

sound/soc/intel/avs/icl.c

@@ -189,8 +189,6 @@ const struct avs_dsp_ops avs_icl_dsp_ops = {
 	.reset = avs_dsp_core_reset,
 	.stall = avs_dsp_core_stall,
 	.dsp_interrupt = avs_cnl_dsp_interrupt,
-	.irq_handler = avs_irq_handler,
-	.irq_thread = avs_cnl_irq_thread,
 	.int_control = avs_dsp_interrupt_control,
 	.load_basefw = avs_icl_load_basefw,
 	.load_lib = avs_hda_load_library,

sound/soc/intel/avs/ipc.c

@@ -301,54 +301,6 @@ void avs_dsp_process_response(struct avs_dev *adev, u64 header)
 	complete(&ipc->busy_completion);
 }
 
-irqreturn_t avs_irq_handler(struct avs_dev *adev)
-{
-	struct avs_ipc *ipc = adev->ipc;
-	const struct avs_spec *const spec = adev->spec;
-	u32 adspis, hipc_rsp, hipc_ack;
-	irqreturn_t ret = IRQ_NONE;
-
-	adspis = snd_hdac_adsp_readl(adev, AVS_ADSP_REG_ADSPIS);
-	if (adspis == UINT_MAX || !(adspis & AVS_ADSP_ADSPIS_IPC))
-		return ret;
-
-	hipc_ack = snd_hdac_adsp_readl(adev, spec->hipc->ack_offset);
-	hipc_rsp = snd_hdac_adsp_readl(adev, spec->hipc->rsp_offset);
-
-	/* DSP acked host's request */
-	if (hipc_ack & spec->hipc->ack_done_mask) {
-		/*
-		 * As an extra precaution, mask done interrupt. Code executed
-		 * due to complete() found below does not assume any masking.
-		 */
-		snd_hdac_adsp_updatel(adev, spec->hipc->ctl_offset,
-				      AVS_ADSP_HIPCCTL_DONE, 0);
-
-		complete(&ipc->done_completion);
-
-		/* tell DSP it has our attention */
-		snd_hdac_adsp_updatel(adev, spec->hipc->ack_offset,
-				      spec->hipc->ack_done_mask,
-				      spec->hipc->ack_done_mask);
-		/* unmask done interrupt */
-		snd_hdac_adsp_updatel(adev, spec->hipc->ctl_offset,
-				      AVS_ADSP_HIPCCTL_DONE,
-				      AVS_ADSP_HIPCCTL_DONE);
-		ret = IRQ_HANDLED;
-	}
-
-	/* DSP sent new response to process */
-	if (hipc_rsp & spec->hipc->rsp_busy_mask) {
-		/* mask busy interrupt */
-		snd_hdac_adsp_updatel(adev, spec->hipc->ctl_offset,
-				      AVS_ADSP_HIPCCTL_BUSY, 0);
-
-		ret = IRQ_WAKE_THREAD;
-	}
-
-	return ret;
-}
-
 static bool avs_ipc_is_busy(struct avs_ipc *ipc)
 {
 	struct avs_dev *adev = to_avs_dev(ipc->dev);

sound/soc/intel/avs/skl.c

@@ -13,31 +13,6 @@
 #include "cldma.h"
 #include "messages.h"
 
-irqreturn_t avs_skl_irq_thread(struct avs_dev *adev)
-{
-	union avs_reply_msg msg;
-	u32 hipct, hipcte;
-
-	hipct = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCT);
-	hipcte = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCTE);
-
-	/* Ensure DSP sent new response to process. */
-	if (!(hipct & SKL_ADSP_HIPCT_BUSY))
-		return IRQ_NONE;
-
-	msg.primary = hipct;
-	msg.ext.val = hipcte;
-	avs_dsp_process_response(adev, msg.val);
-
-	/* Tell DSP we accepted its message. */
-	snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCT, SKL_ADSP_HIPCT_BUSY, SKL_ADSP_HIPCT_BUSY);
-	/* Unmask busy interrupt. */
-	snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL, AVS_ADSP_HIPCCTL_BUSY,
-			      AVS_ADSP_HIPCCTL_BUSY);
-
-	return IRQ_HANDLED;
-}
-
 void avs_skl_ipc_interrupt(struct avs_dev *adev)
 {
 	const struct avs_spec *spec = adev->spec;
@@ -190,8 +165,6 @@ const struct avs_dsp_ops avs_skl_dsp_ops = {
 	.reset = avs_dsp_core_reset,
 	.stall = avs_dsp_core_stall,
 	.dsp_interrupt = avs_skl_dsp_interrupt,
-	.irq_handler = avs_irq_handler,
-	.irq_thread = avs_skl_irq_thread,
 	.int_control = avs_dsp_interrupt_control,
 	.load_basefw = avs_cldma_load_basefw,
 	.load_lib = avs_cldma_load_library,

sound/soc/intel/avs/tgl.c

@@ -40,8 +40,6 @@ const struct avs_dsp_ops avs_tgl_dsp_ops = {
 	.reset = avs_tgl_dsp_core_reset,
 	.stall = avs_tgl_dsp_core_stall,
 	.dsp_interrupt = avs_cnl_dsp_interrupt,
-	.irq_handler = avs_irq_handler,
-	.irq_thread = avs_cnl_irq_thread,
 	.int_control = avs_dsp_interrupt_control,
 	.load_basefw = avs_icl_load_basefw,
 	.load_lib = avs_hda_load_library,