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authorLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 02:28:57 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 02:28:57 +0300
commitff0c7e18629b8bd64681313a88ce55e182c9fee6 (patch)
tree70efa650f6458514e1d7e5e3f72cc8f87fc5cf2c /sound/soc/cirrus/ep93xx-ac97.c
parent5b0ed5964928b0aaf0d644c17c886c7f5ea4bb3f (diff)
parenta1f925bc4fa899b3c0f2dcbc432d572c36e74e71 (diff)
downloadlinux-ff0c7e18629b8bd64681313a88ce55e182c9fee6.tar.xz
Merge tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC boardfile updates from Arnd Bergmann "Unused boardfile removal for 6.3 This is a follow-up to the deprecation of most of the old-style board files that was merged in linux-6.0, removing them for good. This branch is almost exclusively dead code removal based on those annotations. Some device driver removals went through separate subsystem trees, but the majority is in the same branch, in order to better handle dependencies between the patches and avoid breaking bisection. Unfortunately that leads to merge conflicts against other changes in the subsystem trees, but they should all be trivial to resolve by removing the files. See commit 7d0d3fa7339e ("Merge tag 'arm-boardfiles-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the description of which machines were marked unused and are now removed. The only removals that got postponed are Terastation WXL (mv78xx0) and Jornada720 (StrongARM1100), which turned out to still have potential users" * tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits) mmc: omap: drop TPS65010 dependency ARM: pxa: restore mfp-pxa320.h usb: ohci-omap: avoid unused-variable warning ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs ARM: s3c: remove obsolete s3c-cpu-freq header MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal ARM: remove CONFIG_UNUSED_BOARD_FILES mfd: remove htc-pasic3 driver w1: remove ds1wm driver usb: remove ohci-tmio driver fbdev: remove w100fb driver fbdev: remove tmiofb driver mmc: remove tmio_mmc driver mfd: remove ucb1400 support mfd: remove toshiba tmio drivers rtc: remove v3020 driver power: remove pda_power supply driver ASoC: pxa: remove unused board support pcmcia: remove unused pxa/sa1100 drivers ...
Diffstat (limited to 'sound/soc/cirrus/ep93xx-ac97.c')
-rw-r--r--sound/soc/cirrus/ep93xx-ac97.c446
1 files changed, 0 insertions, 446 deletions
diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c
deleted file mode 100644
index 37593abe6053..000000000000
--- a/sound/soc/cirrus/ep93xx-ac97.c
+++ /dev/null
@@ -1,446 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * ASoC driver for Cirrus Logic EP93xx AC97 controller.
- *
- * Copyright (c) 2010 Mika Westerberg
- *
- * Based on s3c-ac97 ASoC driver by Jaswinder Singh.
- */
-
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-
-#include <sound/core.h>
-#include <sound/dmaengine_pcm.h>
-#include <sound/ac97_codec.h>
-#include <sound/soc.h>
-
-#include <linux/platform_data/dma-ep93xx.h>
-#include <linux/soc/cirrus/ep93xx.h>
-
-#include "ep93xx-pcm.h"
-
-/*
- * Per channel (1-4) registers.
- */
-#define AC97CH(n) (((n) - 1) * 0x20)
-
-#define AC97DR(n) (AC97CH(n) + 0x0000)
-
-#define AC97RXCR(n) (AC97CH(n) + 0x0004)
-#define AC97RXCR_REN BIT(0)
-#define AC97RXCR_RX3 BIT(3)
-#define AC97RXCR_RX4 BIT(4)
-#define AC97RXCR_CM BIT(15)
-
-#define AC97TXCR(n) (AC97CH(n) + 0x0008)
-#define AC97TXCR_TEN BIT(0)
-#define AC97TXCR_TX3 BIT(3)
-#define AC97TXCR_TX4 BIT(4)
-#define AC97TXCR_CM BIT(15)
-
-#define AC97SR(n) (AC97CH(n) + 0x000c)
-#define AC97SR_TXFE BIT(1)
-#define AC97SR_TXUE BIT(6)
-
-#define AC97RISR(n) (AC97CH(n) + 0x0010)
-#define AC97ISR(n) (AC97CH(n) + 0x0014)
-#define AC97IE(n) (AC97CH(n) + 0x0018)
-
-/*
- * Global AC97 controller registers.
- */
-#define AC97S1DATA 0x0080
-#define AC97S2DATA 0x0084
-#define AC97S12DATA 0x0088
-
-#define AC97RGIS 0x008c
-#define AC97GIS 0x0090
-#define AC97IM 0x0094
-/*
- * Common bits for RGIS, GIS and IM registers.
- */
-#define AC97_SLOT2RXVALID BIT(1)
-#define AC97_CODECREADY BIT(5)
-#define AC97_SLOT2TXCOMPLETE BIT(6)
-
-#define AC97EOI 0x0098
-#define AC97EOI_WINT BIT(0)
-#define AC97EOI_CODECREADY BIT(1)
-
-#define AC97GCR 0x009c
-#define AC97GCR_AC97IFE BIT(0)
-
-#define AC97RESET 0x00a0
-#define AC97RESET_TIMEDRESET BIT(0)
-
-#define AC97SYNC 0x00a4
-#define AC97SYNC_TIMEDSYNC BIT(0)
-
-#define AC97_TIMEOUT msecs_to_jiffies(5)
-
-/**
- * struct ep93xx_ac97_info - EP93xx AC97 controller info structure
- * @lock: mutex serializing access to the bus (slot 1 & 2 ops)
- * @dev: pointer to the platform device dev structure
- * @regs: mapped AC97 controller registers
- * @done: bus ops wait here for an interrupt
- */
-struct ep93xx_ac97_info {
- struct mutex lock;
- struct device *dev;
- void __iomem *regs;
- struct completion done;
- struct snd_dmaengine_dai_dma_data dma_params_rx;
- struct snd_dmaengine_dai_dma_data dma_params_tx;
-};
-
-/* currently ALSA only supports a single AC97 device */
-static struct ep93xx_ac97_info *ep93xx_ac97_info;
-
-static struct ep93xx_dma_data ep93xx_ac97_pcm_out = {
- .name = "ac97-pcm-out",
- .port = EP93XX_DMA_AAC1,
- .direction = DMA_MEM_TO_DEV,
-};
-
-static struct ep93xx_dma_data ep93xx_ac97_pcm_in = {
- .name = "ac97-pcm-in",
- .port = EP93XX_DMA_AAC1,
- .direction = DMA_DEV_TO_MEM,
-};
-
-static inline unsigned ep93xx_ac97_read_reg(struct ep93xx_ac97_info *info,
- unsigned reg)
-{
- return __raw_readl(info->regs + reg);
-}
-
-static inline void ep93xx_ac97_write_reg(struct ep93xx_ac97_info *info,
- unsigned reg, unsigned val)
-{
- __raw_writel(val, info->regs + reg);
-}
-
-static unsigned short ep93xx_ac97_read(struct snd_ac97 *ac97,
- unsigned short reg)
-{
- struct ep93xx_ac97_info *info = ep93xx_ac97_info;
- unsigned short val;
-
- mutex_lock(&info->lock);
-
- ep93xx_ac97_write_reg(info, AC97S1DATA, reg);
- ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2RXVALID);
- if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) {
- dev_warn(info->dev, "timeout reading register %x\n", reg);
- mutex_unlock(&info->lock);
- return -ETIMEDOUT;
- }
- val = (unsigned short)ep93xx_ac97_read_reg(info, AC97S2DATA);
-
- mutex_unlock(&info->lock);
- return val;
-}
-
-static void ep93xx_ac97_write(struct snd_ac97 *ac97,
- unsigned short reg,
- unsigned short val)
-{
- struct ep93xx_ac97_info *info = ep93xx_ac97_info;
-
- mutex_lock(&info->lock);
-
- /*
- * Writes to the codec need to be done so that slot 2 is filled in
- * before slot 1.
- */
- ep93xx_ac97_write_reg(info, AC97S2DATA, val);
- ep93xx_ac97_write_reg(info, AC97S1DATA, reg);
-
- ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2TXCOMPLETE);
- if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
- dev_warn(info->dev, "timeout writing register %x\n", reg);
-
- mutex_unlock(&info->lock);
-}
-
-static void ep93xx_ac97_warm_reset(struct snd_ac97 *ac97)
-{
- struct ep93xx_ac97_info *info = ep93xx_ac97_info;
-
- mutex_lock(&info->lock);
-
- /*
- * We are assuming that before this functions gets called, the codec
- * BIT_CLK is stopped by forcing the codec into powerdown mode. We can
- * control the SYNC signal directly via AC97SYNC register. Using
- * TIMEDSYNC the controller will keep the SYNC high > 1us.
- */
- ep93xx_ac97_write_reg(info, AC97SYNC, AC97SYNC_TIMEDSYNC);
- ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY);
- if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
- dev_warn(info->dev, "codec warm reset timeout\n");
-
- mutex_unlock(&info->lock);
-}
-
-static void ep93xx_ac97_cold_reset(struct snd_ac97 *ac97)
-{
- struct ep93xx_ac97_info *info = ep93xx_ac97_info;
-
- mutex_lock(&info->lock);
-
- /*
- * For doing cold reset, we disable the AC97 controller interface, clear
- * WINT and CODECREADY bits, and finally enable the interface again.
- */
- ep93xx_ac97_write_reg(info, AC97GCR, 0);
- ep93xx_ac97_write_reg(info, AC97EOI, AC97EOI_CODECREADY | AC97EOI_WINT);
- ep93xx_ac97_write_reg(info, AC97GCR, AC97GCR_AC97IFE);
-
- /*
- * Now, assert the reset and wait for the codec to become ready.
- */
- ep93xx_ac97_write_reg(info, AC97RESET, AC97RESET_TIMEDRESET);
- ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY);
- if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
- dev_warn(info->dev, "codec cold reset timeout\n");
-
- /*
- * Give the codec some time to come fully out from the reset. This way
- * we ensure that the subsequent reads/writes will work.
- */
- usleep_range(15000, 20000);
-
- mutex_unlock(&info->lock);
-}
-
-static irqreturn_t ep93xx_ac97_interrupt(int irq, void *dev_id)
-{
- struct ep93xx_ac97_info *info = dev_id;
- unsigned status, mask;
-
- /*
- * Just mask out the interrupt and wake up the waiting thread.
- * Interrupts are cleared via reading/writing to slot 1 & 2 registers by
- * the waiting thread.
- */
- status = ep93xx_ac97_read_reg(info, AC97GIS);
- mask = ep93xx_ac97_read_reg(info, AC97IM);
- mask &= ~status;
- ep93xx_ac97_write_reg(info, AC97IM, mask);
-
- complete(&info->done);
- return IRQ_HANDLED;
-}
-
-static struct snd_ac97_bus_ops ep93xx_ac97_ops = {
- .read = ep93xx_ac97_read,
- .write = ep93xx_ac97_write,
- .reset = ep93xx_ac97_cold_reset,
- .warm_reset = ep93xx_ac97_warm_reset,
-};
-
-static int ep93xx_ac97_trigger(struct snd_pcm_substream *substream,
- int cmd, struct snd_soc_dai *dai)
-{
- struct ep93xx_ac97_info *info = snd_soc_dai_get_drvdata(dai);
- unsigned v = 0;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /*
- * Enable compact mode, TX slots 3 & 4, and the TX FIFO
- * itself.
- */
- v |= AC97TXCR_CM;
- v |= AC97TXCR_TX3 | AC97TXCR_TX4;
- v |= AC97TXCR_TEN;
- ep93xx_ac97_write_reg(info, AC97TXCR(1), v);
- } else {
- /*
- * Enable compact mode, RX slots 3 & 4, and the RX FIFO
- * itself.
- */
- v |= AC97RXCR_CM;
- v |= AC97RXCR_RX3 | AC97RXCR_RX4;
- v |= AC97RXCR_REN;
- ep93xx_ac97_write_reg(info, AC97RXCR(1), v);
- }
- break;
-
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /*
- * As per Cirrus EP93xx errata described below:
- *
- * https://www.cirrus.com/en/pubs/errata/ER667E2B.pdf
- *
- * we will wait for the TX FIFO to be empty before
- * clearing the TEN bit.
- */
- unsigned long timeout = jiffies + AC97_TIMEOUT;
-
- do {
- v = ep93xx_ac97_read_reg(info, AC97SR(1));
- if (time_after(jiffies, timeout)) {
- dev_warn(info->dev, "TX timeout\n");
- break;
- }
- } while (!(v & (AC97SR_TXFE | AC97SR_TXUE)));
-
- /* disable the TX FIFO */
- ep93xx_ac97_write_reg(info, AC97TXCR(1), 0);
- } else {
- /* disable the RX FIFO */
- ep93xx_ac97_write_reg(info, AC97RXCR(1), 0);
- }
- break;
-
- default:
- dev_warn(info->dev, "unknown command %d\n", cmd);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int ep93xx_ac97_dai_probe(struct snd_soc_dai *dai)
-{
- struct ep93xx_ac97_info *info = snd_soc_dai_get_drvdata(dai);
-
- info->dma_params_tx.filter_data = &ep93xx_ac97_pcm_out;
- info->dma_params_rx.filter_data = &ep93xx_ac97_pcm_in;
-
- dai->playback_dma_data = &info->dma_params_tx;
- dai->capture_dma_data = &info->dma_params_rx;
-
- return 0;
-}
-
-static const struct snd_soc_dai_ops ep93xx_ac97_dai_ops = {
- .trigger = ep93xx_ac97_trigger,
-};
-
-static struct snd_soc_dai_driver ep93xx_ac97_dai = {
- .name = "ep93xx-ac97",
- .id = 0,
- .probe = ep93xx_ac97_dai_probe,
- .playback = {
- .stream_name = "AC97 Playback",
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .capture = {
- .stream_name = "AC97 Capture",
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .ops = &ep93xx_ac97_dai_ops,
-};
-
-static const struct snd_soc_component_driver ep93xx_ac97_component = {
- .name = "ep93xx-ac97",
- .legacy_dai_naming = 1,
-};
-
-static int ep93xx_ac97_probe(struct platform_device *pdev)
-{
- struct ep93xx_ac97_info *info;
- int irq;
- int ret;
-
- info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- info->regs = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(info->regs))
- return PTR_ERR(info->regs);
-
- irq = platform_get_irq(pdev, 0);
- if (irq <= 0)
- return irq < 0 ? irq : -ENODEV;
-
- ret = devm_request_irq(&pdev->dev, irq, ep93xx_ac97_interrupt,
- IRQF_TRIGGER_HIGH, pdev->name, info);
- if (ret)
- goto fail;
-
- dev_set_drvdata(&pdev->dev, info);
-
- mutex_init(&info->lock);
- init_completion(&info->done);
- info->dev = &pdev->dev;
-
- ep93xx_ac97_info = info;
- platform_set_drvdata(pdev, info);
-
- ret = snd_soc_set_ac97_ops(&ep93xx_ac97_ops);
- if (ret)
- goto fail;
-
- ret = snd_soc_register_component(&pdev->dev, &ep93xx_ac97_component,
- &ep93xx_ac97_dai, 1);
- if (ret)
- goto fail;
-
- ret = devm_ep93xx_pcm_platform_register(&pdev->dev);
- if (ret)
- goto fail_unregister;
-
- return 0;
-
-fail_unregister:
- snd_soc_unregister_component(&pdev->dev);
-fail:
- ep93xx_ac97_info = NULL;
- snd_soc_set_ac97_ops(NULL);
- return ret;
-}
-
-static int ep93xx_ac97_remove(struct platform_device *pdev)
-{
- struct ep93xx_ac97_info *info = platform_get_drvdata(pdev);
-
- snd_soc_unregister_component(&pdev->dev);
-
- /* disable the AC97 controller */
- ep93xx_ac97_write_reg(info, AC97GCR, 0);
-
- ep93xx_ac97_info = NULL;
-
- snd_soc_set_ac97_ops(NULL);
-
- return 0;
-}
-
-static struct platform_driver ep93xx_ac97_driver = {
- .probe = ep93xx_ac97_probe,
- .remove = ep93xx_ac97_remove,
- .driver = {
- .name = "ep93xx-ac97",
- },
-};
-
-module_platform_driver(ep93xx_ac97_driver);
-
-MODULE_DESCRIPTION("EP93xx AC97 ASoC Driver");
-MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:ep93xx-ac97");