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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 10:26:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 10:26:23 -0800
commitd4371f94bc003e912d4825f5c4bdf57959857073 (patch)
tree919e196d72fc83cba8c67ee720a233671938d265 /arch/arm/mach-s3c64xx
parenta547df99aad777c1807e23991fa2471693c0e4cc (diff)
parent7552f34a790069a008bd3e2ab4c0954b30c2f63b (diff)
downloadop-kernel-dev-d4371f94bc003e912d4825f5c4bdf57959857073.zip
op-kernel-dev-d4371f94bc003e912d4825f5c4bdf57959857073.tar.gz
Merge tag 'sound-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "It was holiday season, so no wonder that there are little changes in framework level, although diffstat shows quite many changes spreaded over sound/* directories. Most of changes are cleanups, code refactoring and fixes. Some highlights: - Removal of OSS sleep_on usages by Arnd - Simplified memalloc helper codes, drop obsoleted features; now it's built into PCM driver instead of an individual module - Warn if PCM buffer preallocation fails, which will show page allocation issues more clearly - Compress offload API updates for sample rates by Vinod - PCM glitch workaround on ctxfi emu20k1 by Sarah - Drop cs46xx DSP blobs, using firmware loader now - USB-audio quitks for Plantronics Gamecom 780, Creative VF0420, and Focusrite Saffire 6 HD-audio specifics: - Standardize Kconfigs of HD-audio codec drivers; now "make localmodconfig" recognizes configs properly (finally!) - Parallel PM implementation by Mengdong - BayleyBay/ValleyView2 board fixups - Broadwell audio support - Runtime PM improvement (PantherPoint, etc) - Quirks: Dell subwooer, Gigabyte mobo jack detection oddity, Dell AiO click noise fixes, Dell headset mic fixes, etc - Automatic bind with HDMI codec parser without generic parser - More AD codec fixes (since 3.12 regression) including the automatic stereo mix support - Common Thinkpad ACPI helper for Realtek and Conexant codecs ASoC specifics: - Update to the generic DMA code to support deferred probe and managed resources - New drivers for BCM2835 (used in Raspberry Pi), Tegra with MAX98090 and Analog Devices AXI I2S and S/PDIF controller IPs - Device tree support for the simple card, max98090 and cs42l52 - Conversion of the Samsung drivers to native dmaengine, making them multiplatform compatible and hopefully helping keep them more modern and up to date. - More regmap conversions, including a very welcome one for twl6040 from Peter Ujfalusi - A big overhaul of the DaVinci drivers also from Peter Ujfalusi - Lots of DMA updates from Lars-Peter - Improvements to the constraints handling code from Lars-Peter - A very helpful conversion of the TWL4030 driver to regmap from Peter - A new driver for the Freescale ESAI controller from Nicolin Chen - Conversion of some of the drivers to use params_width() - Extensions to DPCM for use with compressed audio from Liam" * tag 'sound-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (396 commits) ASoC: dapm: Fix double prefix addition ASoC: compress: Add suport for DPCM into compressed audio ASoC: DPCM: make some DPCM API calls non static for compressed usage ASoC: core: Fix possible NULL pointer dereference of pcm->config ALSA: hda - add headset mic detect quirks for some Dell machines ASoC: tlv320aic32x4: Fix regmap range_min ASoC: core: Return -ENOTSUPP from set_sysclk() if no operation provided ASoC: dapm: Change prototype of soc_widget_read ASoC: samsung: Remove SND_DMAENGINE_PCM_FLAG_NO_RESIDUE flag ASoC: axi-{spdif,i2s}: Remove SND_DMAENGINE_PCM_FLAG_NO_RESIDUE flag ASoC: generic-dmaengine-pcm: Check DMA residue granularity ASoC: generic-dmaengine-pcm: Check NO_RESIDUE flag at runtime dma: pl330: Set residue_granularity dma: Indicate residue granularity in dma_slave_caps ASoC: simple-card: fix one bug to writing to the platform data ASoC: pcm: Use snd_pcm_rate_mask_intersect() helper ALSA: Add helper function for intersecting two rate masks ASoC: s6000: Don't mix SNDRV_PCM_RATE_CONTINUOUS with specific rates ASoC: fsl: Don't mix SNDRV_PCM_RATE_CONTINUOUS with specific rates ASoC: pcm: Properly initialize hw->rate_max ...
Diffstat (limited to 'arch/arm/mach-s3c64xx')
-rw-r--r--arch/arm/mach-s3c64xx/Kconfig7
-rw-r--r--arch/arm/mach-s3c64xx/Makefile2
-rw-r--r--arch/arm/mach-s3c64xx/common.h5
-rw-r--r--arch/arm/mach-s3c64xx/dma.c762
-rw-r--r--arch/arm/mach-s3c64xx/include/mach/dma.h144
-rw-r--r--arch/arm/mach-s3c64xx/pl080.c244
6 files changed, 296 insertions, 868 deletions
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index 175f015..64f04e6 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -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
diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile
index 6faedcf..58069a7 100644
--- a/arch/arm/mach-s3c64xx/Makefile
+++ b/arch/arm/mach-s3c64xx/Makefile
@@ -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
diff --git a/arch/arm/mach-s3c64xx/common.h b/arch/arm/mach-s3c64xx/common.h
index bd3bd56..7043e7a 100644
--- a/arch/arm/mach-s3c64xx/common.h
+++ b/arch/arm/mach-s3c64xx/common.h
@@ -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 */
diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c
deleted file mode 100644
index 7e22c21..0000000
--- a/arch/arm/mach-s3c64xx/dma.c
+++ /dev/null
@@ -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);
diff --git a/arch/arm/mach-s3c64xx/include/mach/dma.h b/arch/arm/mach-s3c64xx/include/mach/dma.h
index fe1a98c..059b1fc 100644
--- a/arch/arm/mach-s3c64xx/include/mach/dma.h
+++ b/arch/arm/mach-s3c64xx/include/mach/dma.h
@@ -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))
+
+/* 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")
-/* see mach-s3c2410/dma.h for notes on dma channel numbers */
-
-/* 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 */
diff --git a/arch/arm/mach-s3c64xx/pl080.c b/arch/arm/mach-s3c64xx/pl080.c
new file mode 100644
index 0000000..901a984
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/pl080.c
@@ -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);
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