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Merge branch 'topic/samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-dma

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This commit is contained in:
Mark Brown 2014-01-14 21:28:35 +00:00
commit 8e6714ac60
22 changed files with 468 additions and 946 deletions
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1
arch/arm/Kconfig
View File

@ -723,6 +723,7 @@ config ARCH_S3C64XX
bool "Samsung S3C64XX"
select ARCH_HAS_CPUFREQ
select ARCH_REQUIRE_GPIOLIB
select ARM_AMBA
select ARM_VIC
select CLKDEV_LOOKUP
select CLKSRC_SAMSUNG_PWM

7
arch/arm/mach-s3c64xx/Kconfig
View File

@ -17,9 +17,10 @@ config CPU_S3C6410
help
Enable S3C6410 CPU support
config S3C64XX_DMA
bool "S3C64XX DMA"
select S3C_DMA
config S3C64XX_PL080
bool "S3C64XX DMA using generic PL08x driver"
select AMBA_PL08X
select SAMSUNG_DMADEV
config S3C64XX_SETUP_SDHCI
bool

2
arch/arm/mach-s3c64xx/Makefile
View File

@ -26,7 +26,7 @@ obj-$(CONFIG_CPU_IDLE) += cpuidle.o
# DMA support
obj-$(CONFIG_S3C64XX_DMA) += dma.o
obj-$(CONFIG_S3C64XX_PL080) += pl080.o
# Device support

5
arch/arm/mach-s3c64xx/common.h
View File

@ -58,4 +58,9 @@ int __init s3c64xx_pm_late_initcall(void);
static inline int s3c64xx_pm_late_initcall(void) { return 0; }
#endif
#ifdef CONFIG_S3C64XX_PL080
extern struct pl08x_platform_data s3c64xx_dma0_plat_data;
extern struct pl08x_platform_data s3c64xx_dma1_plat_data;
#endif
#endif /* __ARCH_ARM_MACH_S3C64XX_COMMON_H */

762
arch/arm/mach-s3c64xx/dma.c
View File

@ -1,762 +0,0 @@
/* linux/arch/arm/plat-s3c64xx/dma.c
*
* Copyright 2009 Openmoko, Inc.
* Copyright 2009 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* S3C64XX DMA core
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* NOTE: Code in this file is not used when booting with Device Tree support.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/dmapool.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/amba/pl080.h>
#include <linux/of.h>
#include <mach/dma.h>
#include <mach/map.h>
#include <mach/irqs.h>
#include "regs-sys.h"
/* dma channel state information */
struct s3c64xx_dmac {
struct device dev;
struct clk *clk;
void __iomem *regs;
struct s3c2410_dma_chan *channels;
enum dma_ch chanbase;
};
/* pool to provide LLI buffers */
static struct dma_pool *dma_pool;
/* Debug configuration and code */
static unsigned char debug_show_buffs = 0;
static void dbg_showchan(struct s3c2410_dma_chan *chan)
{
pr_debug("DMA%d: %08x->%08x L %08x C %08x,%08x S %08x\n",
chan->number,
readl(chan->regs + PL080_CH_SRC_ADDR),
readl(chan->regs + PL080_CH_DST_ADDR),
readl(chan->regs + PL080_CH_LLI),
readl(chan->regs + PL080_CH_CONTROL),
readl(chan->regs + PL080S_CH_CONTROL2),
readl(chan->regs + PL080S_CH_CONFIG));
}
static void show_lli(struct pl080s_lli *lli)
{
pr_debug("LLI[%p] %08x->%08x, NL %08x C %08x,%08x\n",
lli, lli->src_addr, lli->dst_addr, lli->next_lli,
lli->control0, lli->control1);
}
static void dbg_showbuffs(struct s3c2410_dma_chan *chan)
{
struct s3c64xx_dma_buff *ptr;
struct s3c64xx_dma_buff *end;
pr_debug("DMA%d: buffs next %p, curr %p, end %p\n",
chan->number, chan->next, chan->curr, chan->end);
ptr = chan->next;
end = chan->end;
if (debug_show_buffs) {
for (; ptr != NULL; ptr = ptr->next) {
pr_debug("DMA%d: %08x ",
chan->number, ptr->lli_dma);
show_lli(ptr->lli);
}
}
}
/* End of Debug */
static struct s3c2410_dma_chan *s3c64xx_dma_map_channel(unsigned int channel)
{
struct s3c2410_dma_chan *chan;
unsigned int start, offs;
start = 0;
if (channel >= DMACH_PCM1_TX)
start = 8;
for (offs = 0; offs < 8; offs++) {
chan = &s3c2410_chans[start + offs];
if (!chan->in_use)
goto found;
}
return NULL;
found:
s3c_dma_chan_map[channel] = chan;
return chan;
}
int s3c2410_dma_config(enum dma_ch channel, int xferunit)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
if (chan == NULL)
return -EINVAL;
switch (xferunit) {
case 1:
chan->hw_width = 0;
break;
case 2:
chan->hw_width = 1;
break;
case 4:
chan->hw_width = 2;
break;
default:
printk(KERN_ERR "%s: illegal width %d\n", __func__, xferunit);
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL(s3c2410_dma_config);
static void s3c64xx_dma_fill_lli(struct s3c2410_dma_chan *chan,
struct pl080s_lli *lli,
dma_addr_t data, int size)
{
dma_addr_t src, dst;
u32 control0, control1;
switch (chan->source) {
case DMA_FROM_DEVICE:
src = chan->dev_addr;
dst = data;
control0 = PL080_CONTROL_SRC_AHB2;
control0 |= PL080_CONTROL_DST_INCR;
break;
case DMA_TO_DEVICE:
src = data;
dst = chan->dev_addr;
control0 = PL080_CONTROL_DST_AHB2;
control0 |= PL080_CONTROL_SRC_INCR;
break;
default:
BUG();
}
/* note, we do not currently setup any of the burst controls */
control1 = size >> chan->hw_width; /* size in no of xfers */
control0 |= PL080_CONTROL_PROT_SYS; /* always in priv. mode */
control0 |= PL080_CONTROL_TC_IRQ_EN; /* always fire IRQ */
control0 |= (u32)chan->hw_width << PL080_CONTROL_DWIDTH_SHIFT;
control0 |= (u32)chan->hw_width << PL080_CONTROL_SWIDTH_SHIFT;
lli->src_addr = src;
lli->dst_addr = dst;
lli->next_lli = 0;
lli->control0 = control0;
lli->control1 = control1;
}
static void s3c64xx_lli_to_regs(struct s3c2410_dma_chan *chan,
struct pl080s_lli *lli)
{
void __iomem *regs = chan->regs;
pr_debug("%s: LLI %p => regs\n", __func__, lli);
show_lli(lli);
writel(lli->src_addr, regs + PL080_CH_SRC_ADDR);
writel(lli->dst_addr, regs + PL080_CH_DST_ADDR);
writel(lli->next_lli, regs + PL080_CH_LLI);
writel(lli->control0, regs + PL080_CH_CONTROL);
writel(lli->control1, regs + PL080S_CH_CONTROL2);
}
static int s3c64xx_dma_start(struct s3c2410_dma_chan *chan)
{
struct s3c64xx_dmac *dmac = chan->dmac;
u32 config;
u32 bit = chan->bit;
dbg_showchan(chan);
pr_debug("%s: clearing interrupts\n", __func__);
/* clear interrupts */
writel(bit, dmac->regs + PL080_TC_CLEAR);
writel(bit, dmac->regs + PL080_ERR_CLEAR);
pr_debug("%s: starting channel\n", __func__);
config = readl(chan->regs + PL080S_CH_CONFIG);
config |= PL080_CONFIG_ENABLE;
config &= ~PL080_CONFIG_HALT;
pr_debug("%s: writing config %08x\n", __func__, config);
writel(config, chan->regs + PL080S_CH_CONFIG);
return 0;
}
static int s3c64xx_dma_stop(struct s3c2410_dma_chan *chan)
{
u32 config;
int timeout;
pr_debug("%s: stopping channel\n", __func__);
dbg_showchan(chan);
config = readl(chan->regs + PL080S_CH_CONFIG);
config |= PL080_CONFIG_HALT;
writel(config, chan->regs + PL080S_CH_CONFIG);
timeout = 1000;
do {
config = readl(chan->regs + PL080S_CH_CONFIG);
pr_debug("%s: %d - config %08x\n", __func__, timeout, config);
if (config & PL080_CONFIG_ACTIVE)
udelay(10);
else
break;
} while (--timeout > 0);
if (config & PL080_CONFIG_ACTIVE) {
printk(KERN_ERR "%s: channel still active\n", __func__);
return -EFAULT;
}
config = readl(chan->regs + PL080S_CH_CONFIG);
config &= ~PL080_CONFIG_ENABLE;
writel(config, chan->regs + PL080S_CH_CONFIG);
return 0;
}
static inline void s3c64xx_dma_bufffdone(struct s3c2410_dma_chan *chan,
struct s3c64xx_dma_buff *buf,
enum s3c2410_dma_buffresult result)
{
if (chan->callback_fn != NULL)
(chan->callback_fn)(chan, buf->pw, 0, result);
}
static void s3c64xx_dma_freebuff(struct s3c64xx_dma_buff *buff)
{
dma_pool_free(dma_pool, buff->lli, buff->lli_dma);
kfree(buff);
}
static int s3c64xx_dma_flush(struct s3c2410_dma_chan *chan)
{
struct s3c64xx_dma_buff *buff, *next;
u32 config;
dbg_showchan(chan);
pr_debug("%s: flushing channel\n", __func__);
config = readl(chan->regs + PL080S_CH_CONFIG);
config &= ~PL080_CONFIG_ENABLE;
writel(config, chan->regs + PL080S_CH_CONFIG);
/* dump all the buffers associated with this channel */
for (buff = chan->curr; buff != NULL; buff = next) {
next = buff->next;
pr_debug("%s: buff %p (next %p)\n", __func__, buff, buff->next);
s3c64xx_dma_bufffdone(chan, buff, S3C2410_RES_ABORT);
s3c64xx_dma_freebuff(buff);
}
chan->curr = chan->next = chan->end = NULL;
return 0;
}
int s3c2410_dma_ctrl(enum dma_ch channel, enum s3c2410_chan_op op)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
WARN_ON(!chan);
if (!chan)
return -EINVAL;
switch (op) {
case S3C2410_DMAOP_START:
return s3c64xx_dma_start(chan);
case S3C2410_DMAOP_STOP:
return s3c64xx_dma_stop(chan);
case S3C2410_DMAOP_FLUSH:
return s3c64xx_dma_flush(chan);
/* believe PAUSE/RESUME are no-ops */
case S3C2410_DMAOP_PAUSE:
case S3C2410_DMAOP_RESUME:
case S3C2410_DMAOP_STARTED:
case S3C2410_DMAOP_TIMEOUT:
return 0;
}
return -ENOENT;
}
EXPORT_SYMBOL(s3c2410_dma_ctrl);
/* s3c2410_dma_enque
*
*/
int s3c2410_dma_enqueue(enum dma_ch channel, void *id,
dma_addr_t data, int size)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
struct s3c64xx_dma_buff *next;
struct s3c64xx_dma_buff *buff;
struct pl080s_lli *lli;
unsigned long flags;
int ret;
WARN_ON(!chan);
if (!chan)
return -EINVAL;
buff = kzalloc(sizeof(struct s3c64xx_dma_buff), GFP_ATOMIC);
if (!buff) {
printk(KERN_ERR "%s: no memory for buffer\n", __func__);
return -ENOMEM;
}
lli = dma_pool_alloc(dma_pool, GFP_ATOMIC, &buff->lli_dma);
if (!lli) {
printk(KERN_ERR "%s: no memory for lli\n", __func__);
ret = -ENOMEM;
goto err_buff;
}
pr_debug("%s: buff %p, dp %08x lli (%p, %08x) %d\n",
__func__, buff, data, lli, (u32)buff->lli_dma, size);
buff->lli = lli;
buff->pw = id;
s3c64xx_dma_fill_lli(chan, lli, data, size);
local_irq_save(flags);
if ((next = chan->next) != NULL) {
struct s3c64xx_dma_buff *end = chan->end;
struct pl080s_lli *endlli = end->lli;
pr_debug("enquing onto channel\n");
end->next = buff;
endlli->next_lli = buff->lli_dma;
if (chan->flags & S3C2410_DMAF_CIRCULAR) {
struct s3c64xx_dma_buff *curr = chan->curr;
lli->next_lli = curr->lli_dma;
}
if (next == chan->curr) {
writel(buff->lli_dma, chan->regs + PL080_CH_LLI);
chan->next = buff;
}
show_lli(endlli);
chan->end = buff;
} else {
pr_debug("enquing onto empty channel\n");
chan->curr = buff;
chan->next = buff;
chan->end = buff;
s3c64xx_lli_to_regs(chan, lli);
}
local_irq_restore(flags);
show_lli(lli);
dbg_showchan(chan);
dbg_showbuffs(chan);
return 0;
err_buff:
kfree(buff);
return ret;
}
EXPORT_SYMBOL(s3c2410_dma_enqueue);
int s3c2410_dma_devconfig(enum dma_ch channel,
enum dma_data_direction source,
unsigned long devaddr)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
u32 peripheral;
u32 config = 0;
pr_debug("%s: channel %d, source %d, dev %08lx, chan %p\n",
__func__, channel, source, devaddr, chan);
WARN_ON(!chan);
if (!chan)
return -EINVAL;
peripheral = (chan->peripheral & 0xf);
chan->source = source;
chan->dev_addr = devaddr;
pr_debug("%s: peripheral %d\n", __func__, peripheral);
switch (source) {
case DMA_FROM_DEVICE:
config = 2 << PL080_CONFIG_FLOW_CONTROL_SHIFT;
config |= peripheral << PL080_CONFIG_SRC_SEL_SHIFT;
break;
case DMA_TO_DEVICE:
config = 1 << PL080_CONFIG_FLOW_CONTROL_SHIFT;
config |= peripheral << PL080_CONFIG_DST_SEL_SHIFT;
break;
default:
printk(KERN_ERR "%s: bad source\n", __func__);
return -EINVAL;
}
/* allow TC and ERR interrupts */
config |= PL080_CONFIG_TC_IRQ_MASK;
config |= PL080_CONFIG_ERR_IRQ_MASK;
pr_debug("%s: config %08x\n", __func__, config);
writel(config, chan->regs + PL080S_CH_CONFIG);
return 0;
}
EXPORT_SYMBOL(s3c2410_dma_devconfig);
int s3c2410_dma_getposition(enum dma_ch channel,
dma_addr_t *src, dma_addr_t *dst)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
WARN_ON(!chan);
if (!chan)
return -EINVAL;
if (src != NULL)
*src = readl(chan->regs + PL080_CH_SRC_ADDR);
if (dst != NULL)
*dst = readl(chan->regs + PL080_CH_DST_ADDR);
return 0;
}
EXPORT_SYMBOL(s3c2410_dma_getposition);
/* s3c2410_request_dma
*
* get control of an dma channel
*/
int s3c2410_dma_request(enum dma_ch channel,
struct s3c2410_dma_client *client,
void *dev)
{
struct s3c2410_dma_chan *chan;
unsigned long flags;
pr_debug("dma%d: s3c2410_request_dma: client=%s, dev=%p\n",
channel, client->name, dev);
local_irq_save(flags);
chan = s3c64xx_dma_map_channel(channel);
if (chan == NULL) {
local_irq_restore(flags);
return -EBUSY;
}
dbg_showchan(chan);
chan->client = client;
chan->in_use = 1;
chan->peripheral = channel;
chan->flags = 0;
local_irq_restore(flags);
/* need to setup */
pr_debug("%s: channel initialised, %p\n", __func__, chan);
return chan->number | DMACH_LOW_LEVEL;
}
EXPORT_SYMBOL(s3c2410_dma_request);
/* s3c2410_dma_free
*
* release the given channel back to the system, will stop and flush
* any outstanding transfers, and ensure the channel is ready for the
* next claimant.
*
* Note, although a warning is currently printed if the freeing client
* info is not the same as the registrant's client info, the free is still
* allowed to go through.
*/
int s3c2410_dma_free(enum dma_ch channel, struct s3c2410_dma_client *client)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
unsigned long flags;
if (chan == NULL)
return -EINVAL;
local_irq_save(flags);
if (chan->client != client) {
printk(KERN_WARNING "dma%d: possible free from different client (channel %p, passed %p)\n",
channel, chan->client, client);
}
/* sort out stopping and freeing the channel */
chan->client = NULL;
chan->in_use = 0;
if (!(channel & DMACH_LOW_LEVEL))
s3c_dma_chan_map[channel] = NULL;
local_irq_restore(flags);
return 0;
}
EXPORT_SYMBOL(s3c2410_dma_free);
static irqreturn_t s3c64xx_dma_irq(int irq, void *pw)
{
struct s3c64xx_dmac *dmac = pw;
struct s3c2410_dma_chan *chan;
enum s3c2410_dma_buffresult res;
u32 tcstat, errstat;
u32 bit;
int offs;
tcstat = readl(dmac->regs + PL080_TC_STATUS);
errstat = readl(dmac->regs + PL080_ERR_STATUS);
for (offs = 0, bit = 1; offs < 8; offs++, bit <<= 1) {
struct s3c64xx_dma_buff *buff;
if (!(errstat & bit) && !(tcstat & bit))
continue;
chan = dmac->channels + offs;
res = S3C2410_RES_ERR;
if (tcstat & bit) {
writel(bit, dmac->regs + PL080_TC_CLEAR);
res = S3C2410_RES_OK;
}
if (errstat & bit)
writel(bit, dmac->regs + PL080_ERR_CLEAR);
/* 'next' points to the buffer that is next to the
* currently active buffer.
* For CIRCULAR queues, 'next' will be same as 'curr'
* when 'end' is the active buffer.
*/
buff = chan->curr;
while (buff && buff != chan->next
&& buff->next != chan->next)
buff = buff->next;
if (!buff)
BUG();
if (buff == chan->next)
buff = chan->end;
s3c64xx_dma_bufffdone(chan, buff, res);
/* Free the node and update curr, if non-circular queue */
if (!(chan->flags & S3C2410_DMAF_CIRCULAR)) {
chan->curr = buff->next;
s3c64xx_dma_freebuff(buff);
}
/* Update 'next' */
buff = chan->next;
if (chan->next == chan->end) {
chan->next = chan->curr;
if (!(chan->flags & S3C2410_DMAF_CIRCULAR))
chan->end = NULL;
} else {
chan->next = buff->next;
}
}
return IRQ_HANDLED;
}
static struct bus_type dma_subsys = {
.name = "s3c64xx-dma",
.dev_name = "s3c64xx-dma",
};
static int s3c64xx_dma_init1(int chno, enum dma_ch chbase,
int irq, unsigned int base)
{
struct s3c2410_dma_chan *chptr = &s3c2410_chans[chno];
struct s3c64xx_dmac *dmac;
char clkname[16];
void __iomem *regs;
void __iomem *regptr;
int err, ch;
dmac = kzalloc(sizeof(struct s3c64xx_dmac), GFP_KERNEL);
if (!dmac) {
printk(KERN_ERR "%s: failed to alloc mem\n", __func__);
return -ENOMEM;
}
dmac->dev.id = chno / 8;
dmac->dev.bus = &dma_subsys;
err = device_register(&dmac->dev);
if (err) {
printk(KERN_ERR "%s: failed to register device\n", __func__);
goto err_alloc;
}
regs = ioremap(base, 0x200);
if (!regs) {
printk(KERN_ERR "%s: failed to ioremap()\n", __func__);
err = -ENXIO;
goto err_dev;
}
snprintf(clkname, sizeof(clkname), "dma%d", dmac->dev.id);
dmac->clk = clk_get(NULL, clkname);
if (IS_ERR(dmac->clk)) {
printk(KERN_ERR "%s: failed to get clock %s\n", __func__, clkname);
err = PTR_ERR(dmac->clk);
goto err_map;
}
clk_prepare_enable(dmac->clk);
dmac->regs = regs;
dmac->chanbase = chbase;
dmac->channels = chptr;
err = request_irq(irq, s3c64xx_dma_irq, 0, "DMA", dmac);
if (err < 0) {
printk(KERN_ERR "%s: failed to get irq\n", __func__);
goto err_clk;
}
regptr = regs + PL080_Cx_BASE(0);
for (ch = 0; ch < 8; ch++, chptr++) {
pr_debug("%s: registering DMA %d (%p)\n",
__func__, chno + ch, regptr);
chptr->bit = 1 << ch;
chptr->number = chno + ch;
chptr->dmac = dmac;
chptr->regs = regptr;
regptr += PL080_Cx_STRIDE;
}
/* for the moment, permanently enable the controller */
writel(PL080_CONFIG_ENABLE, regs + PL080_CONFIG);
printk(KERN_INFO "PL080: IRQ %d, at %p, channels %d..%d\n",
irq, regs, chno, chno+8);
return 0;
err_clk:
clk_disable_unprepare(dmac->clk);
clk_put(dmac->clk);
err_map:
iounmap(regs);
err_dev:
device_unregister(&dmac->dev);
err_alloc:
kfree(dmac);
return err;
}
static int __init s3c64xx_dma_init(void)
{
int ret;
/* This driver is not supported when booting with device tree. */
if (of_have_populated_dt())
return -ENODEV;
printk(KERN_INFO "%s: Registering DMA channels\n", __func__);
dma_pool = dma_pool_create("DMA-LLI", NULL, sizeof(struct pl080s_lli), 16, 0);
if (!dma_pool) {
printk(KERN_ERR "%s: failed to create pool\n", __func__);
return -ENOMEM;
}
ret = subsys_system_register(&dma_subsys, NULL);
if (ret) {
printk(KERN_ERR "%s: failed to create subsys\n", __func__);
return -ENOMEM;
}
/* Set all DMA configuration to be DMA, not SDMA */
writel(0xffffff, S3C64XX_SDMA_SEL);
/* Register standard DMA controllers */
s3c64xx_dma_init1(0, DMACH_UART0, IRQ_DMA0, 0x75000000);
s3c64xx_dma_init1(8, DMACH_PCM1_TX, IRQ_DMA1, 0x75100000);
return 0;
}
arch_initcall(s3c64xx_dma_init);

142
arch/arm/mach-s3c64xx/include/mach/dma.h
View File

@ -11,51 +11,48 @@
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H __FILE__
#define S3C_DMA_CHANNELS (16)
#define S3C64XX_DMA_CHAN(name) ((unsigned long)(name))
/* see mach-s3c2410/dma.h for notes on dma channel numbers */
/* DMA0/SDMA0 */
#define DMACH_UART0 S3C64XX_DMA_CHAN("uart0_tx")
#define DMACH_UART0_SRC2 S3C64XX_DMA_CHAN("uart0_rx")
#define DMACH_UART1 S3C64XX_DMA_CHAN("uart1_tx")
#define DMACH_UART1_SRC2 S3C64XX_DMA_CHAN("uart1_rx")
#define DMACH_UART2 S3C64XX_DMA_CHAN("uart2_tx")
#define DMACH_UART2_SRC2 S3C64XX_DMA_CHAN("uart2_rx")
#define DMACH_UART3 S3C64XX_DMA_CHAN("uart3_tx")
#define DMACH_UART3_SRC2 S3C64XX_DMA_CHAN("uart3_rx")
#define DMACH_PCM0_TX S3C64XX_DMA_CHAN("pcm0_tx")
#define DMACH_PCM0_RX S3C64XX_DMA_CHAN("pcm0_rx")
#define DMACH_I2S0_OUT S3C64XX_DMA_CHAN("i2s0_tx")
#define DMACH_I2S0_IN S3C64XX_DMA_CHAN("i2s0_rx")
#define DMACH_SPI0_TX S3C64XX_DMA_CHAN("spi0_tx")
#define DMACH_SPI0_RX S3C64XX_DMA_CHAN("spi0_rx")
#define DMACH_HSI_I2SV40_TX S3C64XX_DMA_CHAN("i2s2_tx")
#define DMACH_HSI_I2SV40_RX S3C64XX_DMA_CHAN("i2s2_rx")
/* DMA1/SDMA1 */
#define DMACH_PCM1_TX S3C64XX_DMA_CHAN("pcm1_tx")
#define DMACH_PCM1_RX S3C64XX_DMA_CHAN("pcm1_rx")
#define DMACH_I2S1_OUT S3C64XX_DMA_CHAN("i2s1_tx")
#define DMACH_I2S1_IN S3C64XX_DMA_CHAN("i2s1_rx")
#define DMACH_SPI1_TX S3C64XX_DMA_CHAN("spi1_tx")
#define DMACH_SPI1_RX S3C64XX_DMA_CHAN("spi1_rx")
#define DMACH_AC97_PCMOUT S3C64XX_DMA_CHAN("ac97_out")
#define DMACH_AC97_PCMIN S3C64XX_DMA_CHAN("ac97_in")
#define DMACH_AC97_MICIN S3C64XX_DMA_CHAN("ac97_mic")
#define DMACH_PWM S3C64XX_DMA_CHAN("pwm")
#define DMACH_IRDA S3C64XX_DMA_CHAN("irda")
#define DMACH_EXTERNAL S3C64XX_DMA_CHAN("external")
#define DMACH_SECURITY_RX S3C64XX_DMA_CHAN("sec_rx")
#define DMACH_SECURITY_TX S3C64XX_DMA_CHAN("sec_tx")
/* Note, for the S3C64XX architecture we keep the DMACH_
* defines in the order they are allocated to [S]DMA0/[S]DMA1
* so that is easy to do DHACH_ -> DMA controller conversion
*/
enum dma_ch {
/* DMA0/SDMA0 */
DMACH_UART0 = 0,
DMACH_UART0_SRC2,
DMACH_UART1,
DMACH_UART1_SRC2,
DMACH_UART2,
DMACH_UART2_SRC2,
DMACH_UART3,
DMACH_UART3_SRC2,
DMACH_PCM0_TX,
DMACH_PCM0_RX,
DMACH_I2S0_OUT,
DMACH_I2S0_IN,
DMACH_SPI0_TX,
DMACH_SPI0_RX,
DMACH_HSI_I2SV40_TX,
DMACH_HSI_I2SV40_RX,
DMACH_MAX = 32
};
/* DMA1/SDMA1 */
DMACH_PCM1_TX = 16,
DMACH_PCM1_RX,
DMACH_I2S1_OUT,
DMACH_I2S1_IN,
DMACH_SPI1_TX,
DMACH_SPI1_RX,
DMACH_AC97_PCMOUT,
DMACH_AC97_PCMIN,
DMACH_AC97_MICIN,
DMACH_PWM,
DMACH_IRDA,
DMACH_EXTERNAL,
DMACH_RES1,
DMACH_RES2,
DMACH_SECURITY_RX, /* SDMA1 only */
DMACH_SECURITY_TX, /* SDMA1 only */
DMACH_MAX /* the end */
struct s3c2410_dma_client {
char *name;
};
static inline bool samsung_dma_has_circular(void)
@ -65,67 +62,10 @@ static inline bool samsung_dma_has_circular(void)
static inline bool samsung_dma_is_dmadev(void)
{
return false;
return true;
}
#define S3C2410_DMAF_CIRCULAR (1 << 0)
#include <plat/dma.h>
#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
struct s3c64xx_dma_buff;
/** s3c64xx_dma_buff - S3C64XX DMA buffer descriptor
* @next: Pointer to next buffer in queue or ring.
* @pw: Client provided identifier
* @lli: Pointer to hardware descriptor this buffer is associated with.
* @lli_dma: Hardare address of the descriptor.
*/
struct s3c64xx_dma_buff {
struct s3c64xx_dma_buff *next;
void *pw;
struct pl080s_lli *lli;
dma_addr_t lli_dma;
};
struct s3c64xx_dmac;
struct s3c2410_dma_chan {
unsigned char number; /* number of this dma channel */
unsigned char in_use; /* channel allocated */
unsigned char bit; /* bit for enable/disable/etc */
unsigned char hw_width;
unsigned char peripheral;
unsigned int flags;
enum dma_data_direction source;
dma_addr_t dev_addr;
struct s3c2410_dma_client *client;
struct s3c64xx_dmac *dmac; /* pointer to controller */
void __iomem *regs;
/* cdriver callbacks */
s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
s3c2410_dma_opfn_t op_fn; /* channel op callback */
/* buffer list and information */
struct s3c64xx_dma_buff *curr; /* current dma buffer */
struct s3c64xx_dma_buff *next; /* next buffer to load */
struct s3c64xx_dma_buff *end; /* end of queue */
/* note, when channel is running in circular mode, curr is the
* first buffer enqueued, end is the last and curr is where the
* last buffer-done event is set-at. The buffers are not freed
* and the last buffer hardware descriptor points back to the
* first.
*/
};
#include <plat/dma-core.h>
#include <linux/amba/pl08x.h>
#include <plat/dma-ops.h>
#endif /* __ASM_ARCH_IRQ_H */

244
arch/arm/mach-s3c64xx/pl080.c Normal file
View File

@ -0,0 +1,244 @@
/*
* Samsung's S3C64XX generic DMA support using amba-pl08x driver.
*
* Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl080.h>
#include <linux/amba/pl08x.h>
#include <linux/of.h>
#include <mach/irqs.h>
#include <mach/map.h>
#include "regs-sys.h"
static int pl08x_get_xfer_signal(const struct pl08x_channel_data *cd)
{
return cd->min_signal;
}
static void pl08x_put_xfer_signal(const struct pl08x_channel_data *cd, int ch)
{
}
/*
* DMA0
*/
static struct pl08x_channel_data s3c64xx_dma0_info[] = {
{
.bus_id = "uart0_tx",
.min_signal = 0,
.max_signal = 0,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart0_rx",
.min_signal = 1,
.max_signal = 1,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart1_tx",
.min_signal = 2,
.max_signal = 2,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart1_rx",
.min_signal = 3,
.max_signal = 3,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart2_tx",
.min_signal = 4,
.max_signal = 4,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart2_rx",
.min_signal = 5,
.max_signal = 5,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart3_tx",
.min_signal = 6,
.max_signal = 6,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "uart3_rx",
.min_signal = 7,
.max_signal = 7,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "pcm0_tx",
.min_signal = 8,
.max_signal = 8,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "pcm0_rx",
.min_signal = 9,
.max_signal = 9,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s0_tx",
.min_signal = 10,
.max_signal = 10,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s0_rx",
.min_signal = 11,
.max_signal = 11,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "spi0_tx",
.min_signal = 12,
.max_signal = 12,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "spi0_rx",
.min_signal = 13,
.max_signal = 13,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s2_tx",
.min_signal = 14,
.max_signal = 14,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s2_rx",
.min_signal = 15,
.max_signal = 15,
.periph_buses = PL08X_AHB2,
}
};
struct pl08x_platform_data s3c64xx_dma0_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_4 << PL080_CONTROL_SB_SIZE_SHIFT |
PL080_BSIZE_4 << PL080_CONTROL_DB_SIZE_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT |
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE |
PL080_CONTROL_PROT_SYS),
},
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl08x_get_xfer_signal,
.put_xfer_signal = pl08x_put_xfer_signal,
.slave_channels = s3c64xx_dma0_info,
.num_slave_channels = ARRAY_SIZE(s3c64xx_dma0_info),
};
static AMBA_AHB_DEVICE(s3c64xx_dma0, "dma-pl080s.0", 0,
0x75000000, {IRQ_DMA0}, &s3c64xx_dma0_plat_data);
/*
* DMA1
*/
static struct pl08x_channel_data s3c64xx_dma1_info[] = {
{
.bus_id = "pcm1_tx",
.min_signal = 0,
.max_signal = 0,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "pcm1_rx",
.min_signal = 1,
.max_signal = 1,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s1_tx",
.min_signal = 2,
.max_signal = 2,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "i2s1_rx",
.min_signal = 3,
.max_signal = 3,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "spi1_tx",
.min_signal = 4,
.max_signal = 4,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "spi1_rx",
.min_signal = 5,
.max_signal = 5,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "ac97_out",
.min_signal = 6,
.max_signal = 6,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "ac97_in",
.min_signal = 7,
.max_signal = 7,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "ac97_mic",
.min_signal = 8,
.max_signal = 8,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "pwm",
.min_signal = 9,
.max_signal = 9,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "irda",
.min_signal = 10,
.max_signal = 10,
.periph_buses = PL08X_AHB2,
}, {
.bus_id = "external",
.min_signal = 11,
.max_signal = 11,
.periph_buses = PL08X_AHB2,
},
};
struct pl08x_platform_data s3c64xx_dma1_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_4 << PL080_CONTROL_SB_SIZE_SHIFT |
PL080_BSIZE_4 << PL080_CONTROL_DB_SIZE_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT |
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE |
PL080_CONTROL_PROT_SYS),
},
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl08x_get_xfer_signal,
.put_xfer_signal = pl08x_put_xfer_signal,
.slave_channels = s3c64xx_dma1_info,
.num_slave_channels = ARRAY_SIZE(s3c64xx_dma1_info),
};
static AMBA_AHB_DEVICE(s3c64xx_dma1, "dma-pl080s.1", 0,
0x75100000, {IRQ_DMA1}, &s3c64xx_dma1_plat_data);
static int __init s3c64xx_pl080_init(void)
{
/* Set all DMA configuration to be DMA, not SDMA */
writel(0xffffff, S3C64XX_SDMA_SEL);
if (of_have_populated_dt())
return 0;
amba_device_register(&s3c64xx_dma0_device, &iomem_resource);
amba_device_register(&s3c64xx_dma1_device, &iomem_resource);
return 0;
}
arch_initcall(s3c64xx_pl080_init);

10
arch/arm/plat-samsung/devs.c
View File

@ -1468,6 +1468,8 @@ void __init s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi0_cfg_gpio;
#if defined(CONFIG_PL330_DMA)
pd.filter = pl330_filter;
#elif defined(CONFIG_S3C64XX_PL080)
pd.filter = pl08x_filter_id;
#elif defined(CONFIG_S3C24XX_DMAC)
pd.filter = s3c24xx_dma_filter;
#endif
@ -1509,8 +1511,10 @@ void __init s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
pd.num_cs = num_cs;
pd.src_clk_nr = src_clk_nr;
pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi1_cfg_gpio;
#ifdef CONFIG_PL330_DMA
#if defined(CONFIG_PL330_DMA)
pd.filter = pl330_filter;
#elif defined(CONFIG_S3C64XX_PL080)
pd.filter = pl08x_filter_id;
#endif
s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi1);
@ -1550,8 +1554,10 @@ void __init s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
pd.num_cs = num_cs;
pd.src_clk_nr = src_clk_nr;
pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi2_cfg_gpio;
#ifdef CONFIG_PL330_DMA
#if defined(CONFIG_PL330_DMA)
pd.filter = pl330_filter;
#elif defined(CONFIG_S3C64XX_PL080)
pd.filter = pl08x_filter_id;
#endif
s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi2);

8
arch/arm/plat-samsung/dma-ops.c
View File

@ -18,6 +18,12 @@
#include <mach/dma.h>
#if defined(CONFIG_PL330_DMA)
#define dma_filter pl330_filter
#elif defined(CONFIG_S3C64XX_PL080)
#define dma_filter pl08x_filter_id
#endif
static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
struct samsung_dma_req *param,
struct device *dev, char *ch_name)
@ -30,7 +36,7 @@ static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
if (dev->of_node)
return (unsigned)dma_request_slave_channel(dev, ch_name);
else
return (unsigned)dma_request_channel(mask, pl330_filter,
return (unsigned)dma_request_channel(mask, dma_filter,
(void *)dma_ch);
}

4
drivers/clk/samsung/clk-s3c64xx.c
View File

@ -331,8 +331,8 @@ static struct samsung_clock_alias s3c64xx_clock_aliases[] = {
ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
ALIAS(HCLK_DMA1, NULL, "dma1"),
ALIAS(HCLK_DMA0, NULL, "dma0"),
ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"),
ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"),
ALIAS(HCLK_CAMIF, "s3c-camif", "camif"),
ALIAS(HCLK_LCD, "s3c-fb", "lcd"),
ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"),

2
drivers/spi/Kconfig
View File

@ -395,7 +395,7 @@ config SPI_S3C24XX_FIQ
config SPI_S3C64XX
tristate "Samsung S3C64XX series type SPI"
depends on PLAT_SAMSUNG
select S3C64XX_DMA if ARCH_S3C64XX
select S3C64XX_PL080 if ARCH_S3C64XX
help
SPI driver for Samsung S3C64XX and newer SoCs.

13
sound/soc/samsung/Kconfig
View File

@ -1,13 +1,22 @@
config SND_SOC_SAMSUNG
tristate "ASoC support for Samsung"
depends on PLAT_SAMSUNG
select S3C64XX_DMA if ARCH_S3C64XX
select S3C24XX_DMA if ARCH_S3C24XX
select S3C2410_DMA if ARCH_S3C24XX
select S3C64XX_PL080 if ARCH_S3C64XX
select SND_S3C_DMA if !ARCH_S3C24XX
select SND_S3C_DMA_LEGACY if ARCH_S3C24XX
select SND_SOC_GENERIC_DMAENGINE_PCM if !ARCH_S3C24XX
help
Say Y or M if you want to add support for codecs attached to
the Samsung SoCs' Audio interfaces. You will also need to
select the audio interfaces to support below.
config SND_S3C_DMA
tristate
config SND_S3C_DMA_LEGACY
tristate
config SND_S3C24XX_I2S
tristate
select S3C2410_DMA

6
sound/soc/samsung/Makefile
View File

@ -1,5 +1,6 @@
# S3c24XX Platform Support
snd-soc-s3c24xx-objs := dma.o
snd-soc-s3c-dma-objs := dmaengine.o
snd-soc-s3c-dma-legacy-objs := dma.o
snd-soc-idma-objs := idma.o
snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o
snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o
@ -9,7 +10,8 @@ snd-soc-samsung-spdif-objs := spdif.o
snd-soc-pcm-objs := pcm.o
snd-soc-i2s-objs := i2s.o
obj-$(CONFIG_SND_SOC_SAMSUNG) += snd-soc-s3c24xx.o
obj-$(CONFIG_SND_S3C_DMA) += snd-soc-s3c-dma.o
obj-$(CONFIG_SND_S3C_DMA_LEGACY) += snd-soc-s3c-dma-legacy.o
obj-$(CONFIG_SND_S3C24XX_I2S) += snd-soc-s3c24xx-i2s.o
obj-$(CONFIG_SND_SAMSUNG_AC97) += snd-soc-ac97.o
obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o

51
sound/soc/samsung/ac97.c
View File

@ -221,24 +221,6 @@ static struct snd_ac97_bus_ops s3c_ac97_ops = {
.reset = s3c_ac97_cold_reset,
};
static int s3c_ac97_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct s3c_dma_params *dma_data;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dma_data = &s3c_ac97_pcm_out;
else
dma_data = &s3c_ac97_pcm_in;
snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
return 0;
}
static int s3c_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
@ -279,21 +261,6 @@ static int s3c_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
return 0;
}
static int s3c_ac97_hw_mic_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
return -ENODEV;
else
snd_soc_dai_set_dma_data(cpu_dai, substream, &s3c_ac97_mic_in);
return 0;
}
static int s3c_ac97_mic_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
@ -329,15 +296,27 @@ static int s3c_ac97_mic_trigger(struct snd_pcm_substream *substream,
}
static const struct snd_soc_dai_ops s3c_ac97_dai_ops = {
.hw_params = s3c_ac97_hw_params,
.trigger = s3c_ac97_trigger,
};
static const struct snd_soc_dai_ops s3c_ac97_mic_dai_ops = {
.hw_params = s3c_ac97_hw_mic_params,
.trigger = s3c_ac97_mic_trigger,
};
static int s3c_ac97_dai_probe(struct snd_soc_dai *dai)
{
samsung_asoc_init_dma_data(dai, &s3c_ac97_pcm_out, &s3c_ac97_pcm_in);
return 0;
}
static int s3c_ac97_mic_dai_probe(struct snd_soc_dai *dai)
{
samsung_asoc_init_dma_data(dai, NULL, &s3c_ac97_mic_in);
return 0;
}
static struct snd_soc_dai_driver s3c_ac97_dai[] = {
[S3C_AC97_DAI_PCM] = {
.name = "samsung-ac97",
@ -354,6 +333,7 @@ static struct snd_soc_dai_driver s3c_ac97_dai[] = {
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.probe = s3c_ac97_dai_probe,
.ops = &s3c_ac97_dai_ops,
},
[S3C_AC97_DAI_MIC] = {
@ -365,6 +345,7 @@ static struct snd_soc_dai_driver s3c_ac97_dai[] = {
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.probe = s3c_ac97_mic_dai_probe,
.ops = &s3c_ac97_mic_dai_ops,
},
};

14
sound/soc/samsung/dma.c
View File

@ -35,12 +35,6 @@ static const struct snd_pcm_hardware dma_hardware = {
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_U16_LE |
SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S8,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 128*1024,
.period_bytes_min = PAGE_SIZE,
.period_bytes_max = PAGE_SIZE*2,
@ -441,6 +435,14 @@ static struct snd_soc_platform_driver samsung_asoc_platform = {
.pcm_free = dma_free_dma_buffers,
};
void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
struct s3c_dma_params *playback,
struct s3c_dma_params *capture)
{
snd_soc_dai_init_dma_data(dai, playback, capture);
}
EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
int samsung_asoc_dma_platform_register(struct device *dev)
{
return snd_soc_register_platform(dev, &samsung_asoc_platform);

6
sound/soc/samsung/dma.h
View File

@ -12,6 +12,8 @@
#ifndef _S3C_AUDIO_H
#define _S3C_AUDIO_H
#include <sound/dmaengine_pcm.h>
struct s3c_dma_params {
struct s3c2410_dma_client *client; /* stream identifier */
int channel; /* Channel ID */
@ -20,8 +22,12 @@ struct s3c_dma_params {
unsigned ch;
struct samsung_dma_ops *ops;
char *ch_name;
struct snd_dmaengine_dai_dma_data dma_data;
};
void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
struct s3c_dma_params *playback,
struct s3c_dma_params *capture);
int samsung_asoc_dma_platform_register(struct device *dev);
void samsung_asoc_dma_platform_unregister(struct device *dev);

84
sound/soc/samsung/dmaengine.c Normal file
View File

@ -0,0 +1,84 @@
/*
* dmaengine.c - Samsung dmaengine wrapper
*
* Author: Mark Brown <broonie@linaro.org>
* Copyright 2013 Linaro
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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/amba/pl08x.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include "dma.h"
#ifdef CONFIG_ARCH_S3C64XX
#define filter_fn pl08x_filter_id
#else
#define filter_fn NULL
#endif
static const struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = {
.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
.compat_filter_fn = filter_fn,
};
void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
struct s3c_dma_params *playback,
struct s3c_dma_params *capture)
{
struct snd_dmaengine_dai_dma_data *playback_data = NULL;
struct snd_dmaengine_dai_dma_data *capture_data = NULL;
if (playback) {
playback_data = &playback->dma_data;
playback_data->filter_data = (void *)playback->channel;
playback_data->chan_name = playback->ch_name;
playback_data->addr = playback->dma_addr;
playback_data->addr_width = playback->dma_size;
}
if (capture) {
capture_data = &capture->dma_data;
capture_data->filter_data = (void *)capture->channel;
capture_data->chan_name = capture->ch_name;
capture_data->addr = capture->dma_addr;
capture_data->addr_width = capture->dma_size;
}
snd_soc_dai_init_dma_data(dai, playback_data, capture_data);
}
EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
int samsung_asoc_dma_platform_register(struct device *dev)
{
return snd_dmaengine_pcm_register(dev, &samsung_dmaengine_pcm_config,
SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME |
SND_DMAENGINE_PCM_FLAG_NO_RESIDUE |
SND_DMAENGINE_PCM_FLAG_COMPAT);
}
EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
void samsung_asoc_dma_platform_unregister(struct device *dev)
{
return snd_dmaengine_pcm_unregister(dev);
}
EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_unregister);
MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
MODULE_LICENSE("GPL");

9
sound/soc/samsung/i2s.c
View File

@ -702,6 +702,8 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
}
writel(mod, i2s->addr + I2SMOD);
samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
i2s->frmclk = params_rate(params);
return 0;
@ -946,8 +948,11 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
struct i2s_dai *i2s = to_info(dai);
struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
if (other && other->clk) /* If this is probe on secondary */
if (other && other->clk) { /* If this is probe on secondary */
samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback,
NULL);
goto probe_exit;
}
i2s->addr = ioremap(i2s->base, 0x100);
if (i2s->addr == NULL) {
@ -963,7 +968,7 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
}
clk_prepare_enable(i2s->clk);
snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
if (other) {
other->addr = i2s->addr;

8
sound/soc/samsung/idma.c
View File

@ -35,14 +35,6 @@ static const struct snd_pcm_hardware idma_hardware = {
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_U16_LE |
SNDRV_PCM_FMTBIT_S24_LE |
SNDRV_PCM_FMTBIT_U24_LE |
SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S8,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = MAX_IDMA_BUFFER,
.period_bytes_min = 128,
.period_bytes_max = MAX_IDMA_PERIOD,

18
sound/soc/samsung/pcm.c
View File

@ -275,7 +275,6 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct s3c_dma_params *dma_data;
void __iomem *regs = pcm->regs;
struct clk *clk;
int sclk_div, sync_div;
@ -284,13 +283,6 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
dev_dbg(pcm->dev, "Entered %s\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dma_data = pcm->dma_playback;
else
dma_data = pcm->dma_capture;
snd_soc_dai_set_dma_data(rtd->cpu_dai, substream, dma_data);
/* Strictly check for sample size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
@ -461,10 +453,20 @@ static const struct snd_soc_dai_ops s3c_pcm_dai_ops = {
.set_fmt = s3c_pcm_set_fmt,
};
static int s3c_pcm_dai_probe(struct snd_soc_dai *dai)
{
struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(dai);
snd_soc_dai_init_dma_data(dai, pcm->dma_playback, pcm->dma_capture);
return 0;
}
#define S3C_PCM_RATES SNDRV_PCM_RATE_8000_96000
#define S3C_PCM_DAI_DECLARE \
.symmetric_rates = 1, \
.probe = s3c_pcm_dai_probe, \
.ops = &s3c_pcm_dai_ops, \
.playback = { \
.channels_min = 2, \

9
sound/soc/samsung/regs-ac97.h
View File

@ -1,5 +1,4 @@
/* arch/arm/mach-s3c2410/include/mach/regs-ac97.h
*
/*
* Copyright (c) 2006 Simtec Electronics <linux@simtec.co.uk>
* http://www.simtec.co.uk/products/SWLINUX/
*
@ -10,8 +9,8 @@
* S3C2440 AC97 Controller
*/
#ifndef __ASM_ARCH_REGS_AC97_H
#define __ASM_ARCH_REGS_AC97_H __FILE__
#ifndef __SAMSUNG_REGS_AC97_H__
#define __SAMSUNG_REGS_AC97_H__
#define S3C_AC97_GLBCTRL (0x00)
@ -64,4 +63,4 @@
#define S3C_AC97_PCM_DATA (0x18)
#define S3C_AC97_MIC_DATA (0x1C)
#endif /* __ASM_ARCH_REGS_AC97_H */
#endif /* __SAMSUNG_REGS_AC97_H__ */

9
sound/soc/samsung/regs-iis.h
View File

@ -1,5 +1,4 @@
/* arch/arm/plat-samsung/include/plat/regs-iis.h
*
/*
* Copyright (c) 2003 Simtec Electronics <linux@simtec.co.uk>
* http://www.simtec.co.uk/products/SWLINUX/
*
@ -10,8 +9,8 @@
* S3C2410 IIS register definition
*/
#ifndef __ASM_ARCH_REGS_IIS_H
#define __ASM_ARCH_REGS_IIS_H
#ifndef __SAMSUNG_REGS_IIS_H__
#define __SAMSUNG_REGS_IIS_H__
#define S3C2410_IISCON (0x00)
@ -67,4 +66,4 @@
#define S3C2410_IISFIFO (0x10)
#endif /* __ASM_ARCH_REGS_IIS_H */
#endif /* __SAMSUNG_REGS_IIS_H__ */