--- /dev/null
+/*
+ * siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
+ *
+ * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include <asm/clock.h>
+#include <asm/siu.h>
+
+#include <sound/control.h>
+#include <sound/soc.h>
+
+#include "siu.h"
+
+/* Board specifics */
+#if defined(CONFIG_CPU_SUBTYPE_SH7722)
+# define SIU_MAX_VOLUME 0x1000
+#else
+# define SIU_MAX_VOLUME 0x7fff
+#endif
+
+#define PRAM_SIZE 0x2000
+#define XRAM_SIZE 0x800
+#define YRAM_SIZE 0x800
+
+#define XRAM_OFFSET 0x4000
+#define YRAM_OFFSET 0x6000
+#define REG_OFFSET 0xc000
+
+#define PLAYBACK_ENABLED 1
+#define CAPTURE_ENABLED 2
+
+#define VOLUME_CAPTURE 0
+#define VOLUME_PLAYBACK 1
+#define DFLT_VOLUME_LEVEL 0x08000800
+
+/*
+ * SPDIF is only available on port A and on some SIU implementations it is only
+ * available for input. Due to the lack of hardware to test it, SPDIF is left
+ * disabled in this driver version
+ */
+struct format_flag {
+ u32 i2s;
+ u32 pcm;
+ u32 spdif;
+ u32 mask;
+};
+
+struct port_flag {
+ struct format_flag playback;
+ struct format_flag capture;
+};
+
+struct siu_info *siu_i2s_data;
+
+static struct port_flag siu_flags[SIU_PORT_NUM] = {
+ [SIU_PORT_A] = {
+ .playback = {
+ .i2s = 0x50000000,
+ .pcm = 0x40000000,
+ .spdif = 0x80000000, /* not on all SIU versions */
+ .mask = 0xd0000000,
+ },
+ .capture = {
+ .i2s = 0x05000000,
+ .pcm = 0x04000000,
+ .spdif = 0x08000000,
+ .mask = 0x0d000000,
+ },
+ },
+ [SIU_PORT_B] = {
+ .playback = {
+ .i2s = 0x00500000,
+ .pcm = 0x00400000,
+ .spdif = 0, /* impossible - turn off */
+ .mask = 0x00500000,
+ },
+ .capture = {
+ .i2s = 0x00050000,
+ .pcm = 0x00040000,
+ .spdif = 0, /* impossible - turn off */
+ .mask = 0x00050000,
+ },
+ },
+};
+
+static void siu_dai_start(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+
+ dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
+
+ /* Issue software reset to siu */
+ siu_write32(base + SIU_SRCTL, 0);
+
+ /* Wait for the reset to take effect */
+ udelay(1);
+
+ port_info->stfifo = 0;
+ port_info->trdat = 0;
+
+ /* portA, portB, SIU operate */
+ siu_write32(base + SIU_SRCTL, 0x301);
+
+ /* portA=256fs, portB=256fs */
+ siu_write32(base + SIU_CKCTL, 0x40400000);
+
+ /* portA's BRG does not divide SIUCKA */
+ siu_write32(base + SIU_BRGASEL, 0);
+ siu_write32(base + SIU_BRRA, 0);
+
+ /* portB's BRG divides SIUCKB by half */
+ siu_write32(base + SIU_BRGBSEL, 1);
+ siu_write32(base + SIU_BRRB, 0);
+
+ siu_write32(base + SIU_IFCTL, 0x44440000);
+
+ /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */
+ siu_write32(base + SIU_SFORM, 0x0c0c0000);
+
+ /*
+ * Volume levels: looks like the DSP firmware implements volume controls
+ * differently from what's described in the datasheet
+ */
+ siu_write32(base + SIU_SBDVCA, port_info->playback.volume);
+ siu_write32(base + SIU_SBDVCB, port_info->capture.volume);
+}
+
+static void siu_dai_stop(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+
+ /* SIU software reset */
+ siu_write32(base + SIU_SRCTL, 0);
+}
+
+static void siu_dai_spbAselect(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ struct siu_firmware *fw = &info->fw;
+ u32 *ydef = fw->yram0;
+ u32 idx;
+
+ /* path A use */
+ if (!info->port_id)
+ idx = 1; /* portA */
+ else
+ idx = 2; /* portB */
+
+ ydef[0] = (fw->spbpar[idx].ab1a << 16) |
+ (fw->spbpar[idx].ab0a << 8) |
+ (fw->spbpar[idx].dir << 7) | 3;
+ ydef[1] = fw->yram0[1]; /* 0x03000300 */
+ ydef[2] = (16 / 2) << 24;
+ ydef[3] = fw->yram0[3]; /* 0 */
+ ydef[4] = fw->yram0[4]; /* 0 */
+ ydef[7] = fw->spbpar[idx].event;
+ port_info->stfifo |= fw->spbpar[idx].stfifo;
+ port_info->trdat |= fw->spbpar[idx].trdat;
+}
+
+static void siu_dai_spbBselect(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ struct siu_firmware *fw = &info->fw;
+ u32 *ydef = fw->yram0;
+ u32 idx;
+
+ /* path B use */
+ if (!info->port_id)
+ idx = 7; /* portA */
+ else
+ idx = 8; /* portB */
+
+ ydef[5] = (fw->spbpar[idx].ab1a << 16) |
+ (fw->spbpar[idx].ab0a << 8) | 1;
+ ydef[6] = fw->spbpar[idx].event;
+ port_info->stfifo |= fw->spbpar[idx].stfifo;
+ port_info->trdat |= fw->spbpar[idx].trdat;
+}
+
+static void siu_dai_open(struct siu_stream *siu_stream)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+ u32 srctl, ifctl;
+
+ srctl = siu_read32(base + SIU_SRCTL);
+ ifctl = siu_read32(base + SIU_IFCTL);
+
+ switch (info->port_id) {
+ case SIU_PORT_A:
+ /* portA operates */
+ srctl |= 0x200;
+ ifctl &= ~0xc2;
+ break;
+ case SIU_PORT_B:
+ /* portB operates */
+ srctl |= 0x100;
+ ifctl &= ~0x31;
+ break;
+ }
+
+ siu_write32(base + SIU_SRCTL, srctl);
+ /* Unmute and configure portA */
+ siu_write32(base + SIU_IFCTL, ifctl);
+}
+
+/*
+ * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower
+ * packing is supported
+ */
+static void siu_dai_pcmdatapack(struct siu_stream *siu_stream)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+ u32 dpak;
+
+ dpak = siu_read32(base + SIU_DPAK);
+
+ switch (info->port_id) {
+ case SIU_PORT_A:
+ dpak &= ~0xc0000000;
+ break;
+ case SIU_PORT_B:
+ dpak &= ~0x00c00000;
+ break;
+ }
+
+ siu_write32(base + SIU_DPAK, dpak);
+}
+
+static int siu_dai_spbstart(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+ struct siu_firmware *fw = &info->fw;
+ u32 *ydef = fw->yram0;
+ int cnt;
+ u32 __iomem *add;
+ u32 *ptr;
+
+ /* Load SPB Program in PRAM */
+ ptr = fw->pram0;
+ add = info->pram;
+ for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++)
+ siu_write32(add, *ptr);
+
+ ptr = fw->pram1;
+ add = info->pram + (0x0100 / sizeof(u32));
+ for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++)
+ siu_write32(add, *ptr);
+
+ /* XRAM initialization */
+ add = info->xram;
+ for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++)
+ siu_write32(add, 0);
+
+ /* YRAM variable area initialization */
+ add = info->yram;
+ for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++)
+ siu_write32(add, ydef[cnt]);
+
+ /* YRAM FIR coefficient area initialization */
+ add = info->yram + (0x0200 / sizeof(u32));
+ for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++)
+ siu_write32(add, fw->yram_fir_coeff[cnt]);
+
+ /* YRAM IIR coefficient area initialization */
+ add = info->yram + (0x0600 / sizeof(u32));
+ for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++)
+ siu_write32(add, 0);
+
+ siu_write32(base + SIU_TRDAT, port_info->trdat);
+ port_info->trdat = 0x0;
+
+
+ /* SPB start condition: software */
+ siu_write32(base + SIU_SBACTIV, 0);
+ /* Start SPB */
+ siu_write32(base + SIU_SBCTL, 0xc0000000);
+ /* Wait for program to halt */
+ cnt = 0x10000;
+ while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000)
+ cpu_relax();
+
+ if (!cnt)
+ return -EBUSY;
+
+ /* SPB program start address setting */
+ siu_write32(base + SIU_SBPSET, 0x00400000);
+ /* SPB hardware start(FIFOCTL source) */
+ siu_write32(base + SIU_SBACTIV, 0xc0000000);
+
+ return 0;
+}
+
+static void siu_dai_spbstop(struct siu_port *port_info)
+{
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+
+ siu_write32(base + SIU_SBACTIV, 0);
+ /* SPB stop */
+ siu_write32(base + SIU_SBCTL, 0);
+
+ port_info->stfifo = 0;
+}
+
+/* API functions */
+
+/* Playback and capture hardware properties are identical */
+static struct snd_pcm_hardware siu_dai_pcm_hw = {
+ .info = SNDRV_PCM_INFO_INTERLEAVED,
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = SIU_BUFFER_BYTES_MAX,
+ .period_bytes_min = SIU_PERIOD_BYTES_MIN,
+ .period_bytes_max = SIU_PERIOD_BYTES_MAX,
+ .periods_min = SIU_PERIODS_MIN,
+ .periods_max = SIU_PERIODS_MAX,
+};
+
+static int siu_dai_info_volume(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct siu_port *port_info = snd_kcontrol_chip(kctrl);
+
+ dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = SIU_MAX_VOLUME;
+
+ return 0;
+}
+
+static int siu_dai_get_volume(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct siu_port *port_info = snd_kcontrol_chip(kctrl);
+ struct device *dev = port_info->pcm->card->dev;
+ u32 vol;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ switch (kctrl->private_value) {
+ case VOLUME_PLAYBACK:
+ /* Playback is always on port 0 */
+ vol = port_info->playback.volume;
+ ucontrol->value.integer.value[0] = vol & 0xffff;
+ ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
+ break;
+ case VOLUME_CAPTURE:
+ /* Capture is always on port 1 */
+ vol = port_info->capture.volume;
+ ucontrol->value.integer.value[0] = vol & 0xffff;
+ ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
+ break;
+ default:
+ dev_err(dev, "%s() invalid private_value=%ld\n",
+ __func__, kctrl->private_value);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int siu_dai_put_volume(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct siu_port *port_info = snd_kcontrol_chip(kctrl);
+ struct device *dev = port_info->pcm->card->dev;
+ struct siu_info *info = siu_i2s_data;
+ u32 __iomem *base = info->reg;
+ u32 new_vol;
+ u32 cur_vol;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ if (ucontrol->value.integer.value[0] < 0 ||
+ ucontrol->value.integer.value[0] > SIU_MAX_VOLUME ||
+ ucontrol->value.integer.value[1] < 0 ||
+ ucontrol->value.integer.value[1] > SIU_MAX_VOLUME)
+ return -EINVAL;
+
+ new_vol = ucontrol->value.integer.value[0] |
+ ucontrol->value.integer.value[1] << 16;
+
+ /* See comment above - DSP firmware implementation */
+ switch (kctrl->private_value) {
+ case VOLUME_PLAYBACK:
+ /* Playback is always on port 0 */
+ cur_vol = port_info->playback.volume;
+ siu_write32(base + SIU_SBDVCA, new_vol);
+ port_info->playback.volume = new_vol;
+ break;
+ case VOLUME_CAPTURE:
+ /* Capture is always on port 1 */
+ cur_vol = port_info->capture.volume;
+ siu_write32(base + SIU_SBDVCB, new_vol);
+ port_info->capture.volume = new_vol;
+ break;
+ default:
+ dev_err(dev, "%s() invalid private_value=%ld\n",
+ __func__, kctrl->private_value);
+ return -EINVAL;
+ }
+
+ if (cur_vol != new_vol)
+ return 1;
+
+ return 0;
+}
+
+static struct snd_kcontrol_new playback_controls = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "PCM Playback Volume",
+ .index = 0,
+ .info = siu_dai_info_volume,
+ .get = siu_dai_get_volume,
+ .put = siu_dai_put_volume,
+ .private_value = VOLUME_PLAYBACK,
+};
+
+static struct snd_kcontrol_new capture_controls = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "PCM Capture Volume",
+ .index = 0,
+ .info = siu_dai_info_volume,
+ .get = siu_dai_get_volume,
+ .put = siu_dai_put_volume,
+ .private_value = VOLUME_CAPTURE,
+};
+
+int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card)
+{
+ struct device *dev = card->dev;
+ struct snd_kcontrol *kctrl;
+ int ret;
+
+ *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL);
+ if (!*port_info)
+ return -ENOMEM;
+
+ dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info);
+
+ (*port_info)->playback.volume = DFLT_VOLUME_LEVEL;
+ (*port_info)->capture.volume = DFLT_VOLUME_LEVEL;
+
+ /*
+ * Add mixer support. The SPB is used to change the volume. Both
+ * ports use the same SPB. Therefore, we only register one
+ * control instance since it will be used by both channels.
+ * In error case we continue without controls.
+ */
+ kctrl = snd_ctl_new1(&playback_controls, *port_info);
+ ret = snd_ctl_add(card, kctrl);
+ if (ret < 0)
+ dev_err(dev,
+ "failed to add playback controls %p port=%d err=%d\n",
+ kctrl, port, ret);
+
+ kctrl = snd_ctl_new1(&capture_controls, *port_info);
+ ret = snd_ctl_add(card, kctrl);
+ if (ret < 0)
+ dev_err(dev,
+ "failed to add capture controls %p port=%d err=%d\n",
+ kctrl, port, ret);
+
+ return 0;
+}
+
+void siu_free_port(struct siu_port *port_info)
+{
+ kfree(port_info);
+}
+
+static int siu_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct siu_info *info = snd_soc_dai_get_drvdata(dai);
+ struct snd_pcm_runtime *rt = substream->runtime;
+ struct siu_port *port_info = siu_port_info(substream);
+ int ret;
+
+ dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
+ info->port_id, port_info);
+
+ snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw);
+
+ ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (unlikely(ret < 0))
+ return ret;
+
+ siu_dai_start(port_info);
+
+ return 0;
+}
+
+static void siu_dai_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct siu_info *info = snd_soc_dai_get_drvdata(dai);
+ struct siu_port *port_info = siu_port_info(substream);
+
+ dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
+ info->port_id, port_info);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ port_info->play_cap &= ~PLAYBACK_ENABLED;
+ else
+ port_info->play_cap &= ~CAPTURE_ENABLED;
+
+ /* Stop the siu if the other stream is not using it */
+ if (!port_info->play_cap) {
+ /* during stmread or stmwrite ? */
+ if (WARN_ON(port_info->playback.rw_flg || port_info->capture.rw_flg))
+ return;
+ siu_dai_spbstop(port_info);
+ siu_dai_stop(port_info);
+ }
+}
+
+/* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */
+static int siu_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct siu_info *info = snd_soc_dai_get_drvdata(dai);
+ struct snd_pcm_runtime *rt = substream->runtime;
+ struct siu_port *port_info = siu_port_info(substream);
+ struct siu_stream *siu_stream;
+ int self, ret;
+
+ dev_dbg(substream->pcm->card->dev,
+ "%s: port %d, active streams %lx, %d channels\n",
+ __func__, info->port_id, port_info->play_cap, rt->channels);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ self = PLAYBACK_ENABLED;
+ siu_stream = &port_info->playback;
+ } else {
+ self = CAPTURE_ENABLED;
+ siu_stream = &port_info->capture;
+ }
+
+ /* Set up the siu if not already done */
+ if (!port_info->play_cap) {
+ siu_stream->rw_flg = 0; /* stream-data transfer flag */
+
+ siu_dai_spbAselect(port_info);
+ siu_dai_spbBselect(port_info);
+
+ siu_dai_open(siu_stream);
+
+ siu_dai_pcmdatapack(siu_stream);
+
+ ret = siu_dai_spbstart(port_info);
+ if (ret < 0)
+ goto fail;
+ } else {
+ ret = 0;
+ }
+
+ port_info->play_cap |= self;
+
+fail:
+ return ret;
+}
+
+/*
+ * SIU can set bus format to I2S / PCM / SPDIF independently for playback and
+ * capture, however, the current API sets the bus format globally for a DAI.
+ */
+static int siu_dai_set_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ struct siu_info *info = snd_soc_dai_get_drvdata(dai);
+ u32 __iomem *base = info->reg;
+ u32 ifctl;
+
+ dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n",
+ __func__, fmt, info->port_id);
+
+ if (info->port_id < 0)
+ return -ENODEV;
+
+ /* Here select between I2S / PCM / SPDIF */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ifctl = siu_flags[info->port_id].playback.i2s |
+ siu_flags[info->port_id].capture.i2s;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ifctl = siu_flags[info->port_id].playback.pcm |
+ siu_flags[info->port_id].capture.pcm;
+ break;
+ /* SPDIF disabled - see comment at the top */
+ default:
+ return -EINVAL;
+ }
+
+ ifctl |= ~(siu_flags[info->port_id].playback.mask |
+ siu_flags[info->port_id].capture.mask) &
+ siu_read32(base + SIU_IFCTL);
+ siu_write32(base + SIU_IFCTL, ifctl);
+
+ return 0;
+}
+
+static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct clk *siu_clk, *parent_clk;
+ char *siu_name, *parent_name;
+ int ret;
+
+ if (dir != SND_SOC_CLOCK_IN)
+ return -EINVAL;
+
+ dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id);
+
+ switch (clk_id) {
+ case SIU_CLKA_PLL:
+ siu_name = "siua_clk";
+ parent_name = "pll_clk";
+ break;
+ case SIU_CLKA_EXT:
+ siu_name = "siua_clk";
+ parent_name = "siumcka_clk";
+ break;
+ case SIU_CLKB_PLL:
+ siu_name = "siub_clk";
+ parent_name = "pll_clk";
+ break;
+ case SIU_CLKB_EXT:
+ siu_name = "siub_clk";
+ parent_name = "siumckb_clk";
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ siu_clk = clk_get(dai->dev, siu_name);
+ if (IS_ERR(siu_clk)) {
+ dev_err(dai->dev, "%s: cannot get a SIU clock: %ld\n", __func__,
+ PTR_ERR(siu_clk));
+ return PTR_ERR(siu_clk);
+ }
+
+ parent_clk = clk_get(dai->dev, parent_name);
+ if (IS_ERR(parent_clk)) {
+ ret = PTR_ERR(parent_clk);
+ dev_err(dai->dev, "cannot get a SIU clock parent: %d\n", ret);
+ goto epclkget;
+ }
+
+ ret = clk_set_parent(siu_clk, parent_clk);
+ if (ret < 0) {
+ dev_err(dai->dev, "cannot reparent the SIU clock: %d\n", ret);
+ goto eclksetp;
+ }
+
+ ret = clk_set_rate(siu_clk, freq);
+ if (ret < 0)
+ dev_err(dai->dev, "cannot set SIU clock rate: %d\n", ret);
+
+ /* TODO: when clkdev gets reference counting we'll move these to siu_dai_shutdown() */
+eclksetp:
+ clk_put(parent_clk);
+epclkget:
+ clk_put(siu_clk);
+
+ return ret;
+}
+
+static const struct snd_soc_dai_ops siu_dai_ops = {
+ .startup = siu_dai_startup,
+ .shutdown = siu_dai_shutdown,
+ .prepare = siu_dai_prepare,
+ .set_sysclk = siu_dai_set_sysclk,
+ .set_fmt = siu_dai_set_fmt,
+};
+
+static struct snd_soc_dai_driver siu_i2s_dai = {
+ .name = "siu-i2s-dai",
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ },
+ .ops = &siu_dai_ops,
+};
+
+static const struct snd_soc_component_driver siu_i2s_component = {
+ .name = "siu-i2s",
+};
+
+static int siu_probe(struct platform_device *pdev)
+{
+ const struct firmware *fw_entry;
+ struct resource *res, *region;
+ struct siu_info *info;
+ int ret;
+
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ siu_i2s_data = info;
+ info->dev = &pdev->dev;
+
+ ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev);
+ if (ret)
+ goto ereqfw;
+
+ /*
+ * Loaded firmware is "const" - read only, but we have to modify it in
+ * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect()
+ */
+ memcpy(&info->fw, fw_entry->data, fw_entry->size);
+
+ release_firmware(fw_entry);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -ENODEV;
+ goto egetres;
+ }
+
+ region = request_mem_region(res->start, resource_size(res),
+ pdev->name);
+ if (!region) {
+ dev_err(&pdev->dev, "SIU region already claimed\n");
+ ret = -EBUSY;
+ goto ereqmemreg;
+ }
+
+ ret = -ENOMEM;
+ info->pram = ioremap(res->start, PRAM_SIZE);
+ if (!info->pram)
+ goto emappram;
+ info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE);
+ if (!info->xram)
+ goto emapxram;
+ info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE);
+ if (!info->yram)
+ goto emapyram;
+ info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) -
+ REG_OFFSET);
+ if (!info->reg)
+ goto emapreg;
+
+ dev_set_drvdata(&pdev->dev, info);
+
+ /* register using ARRAY version so we can keep dai name */
+ ret = snd_soc_register_component(&pdev->dev, &siu_i2s_component,
+ &siu_i2s_dai, 1);
+ if (ret < 0)
+ goto edaiinit;
+
+ ret = snd_soc_register_platform(&pdev->dev, &siu_platform);
+ if (ret < 0)
+ goto esocregp;
+
+ pm_runtime_enable(&pdev->dev);
+
+ return ret;
+
+esocregp:
+ snd_soc_unregister_component(&pdev->dev);
+edaiinit:
+ iounmap(info->reg);
+emapreg:
+ iounmap(info->yram);
+emapyram:
+ iounmap(info->xram);
+emapxram:
+ iounmap(info->pram);
+emappram:
+ release_mem_region(res->start, resource_size(res));
+ereqmemreg:
+egetres:
+ereqfw:
+ kfree(info);
+
+ return ret;
+}
+
+static int siu_remove(struct platform_device *pdev)
+{
+ struct siu_info *info = dev_get_drvdata(&pdev->dev);
+ struct resource *res;
+
+ pm_runtime_disable(&pdev->dev);
+
+ snd_soc_unregister_platform(&pdev->dev);
+ snd_soc_unregister_component(&pdev->dev);
+
+ iounmap(info->reg);
+ iounmap(info->yram);
+ iounmap(info->xram);
+ iounmap(info->pram);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res)
+ release_mem_region(res->start, resource_size(res));
+ kfree(info);
+
+ return 0;
+}
+
+static struct platform_driver siu_driver = {
+ .driver = {
+ .name = "siu-pcm-audio",
+ },
+ .probe = siu_probe,
+ .remove = siu_remove,
+};
+
+module_platform_driver(siu_driver);
+
+MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>");
+MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff