4 files changed, 513 insertions, 3 deletions

diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 9f6bc55fc399..0374a3965095 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -1,7 +1,8 @@
 config SND_BF5XX_I2S
-        tristate "SoC I2S Audio for the ADI BF5xx chip"
+        tristate "SoC I2S Audio for the ADI Blackfin chip"
         depends on BLACKFIN
-        select SND_BF5XX_SOC_SPORT
+        select SND_BF5XX_SOC_SPORT if !BF60x
+        select SND_BF6XX_SOC_SPORT if BF60x
         help
           Say Y or M if you want to add support for codecs attached to
           the Blackfin SPORT (synchronous serial ports) interface in I2S
@@ -162,6 +163,9 @@ config SND_BF5XX_SOC_AD1980
 config SND_BF5XX_SOC_SPORT
         tristate
 
+config SND_BF6XX_SOC_SPORT
+        tristate
+
 config SND_BF5XX_SOC_I2S
         tristate
 
@@ -173,7 +177,7 @@ config SND_BF5XX_SOC_AC97
 
 config SND_BF5XX_SPORT_NUM
         int "Set a SPORT for Sound chip"
-        depends on (SND_BF5XX_I2S || SND_BF5XX_AC97 || SND_BF5XX_TDM)
+        depends on (SND_BF5XX_SOC_SPORT || SND_BF6XX_SOC_SPORT)
         range 0 3 if BF54x
         range 0 1 if !BF54x
         default 0
diff --git a/sound/soc/blackfin/Makefile b/sound/soc/blackfin/Makefile
index 1bf86ccaa8de..13b092239a82 100644
--- a/sound/soc/blackfin/Makefile
+++ b/sound/soc/blackfin/Makefile
@@ -3,6 +3,7 @@ snd-bf5xx-ac97-objs := bf5xx-ac97-pcm.o
 snd-bf5xx-i2s-objs := bf5xx-i2s-pcm.o
 snd-bf5xx-tdm-objs := bf5xx-tdm-pcm.o
 snd-soc-bf5xx-sport-objs := bf5xx-sport.o
+snd-soc-bf6xx-sport-objs := bf6xx-sport.o
 snd-soc-bf5xx-ac97-objs := bf5xx-ac97.o
 snd-soc-bf5xx-i2s-objs := bf5xx-i2s.o
 snd-soc-bf5xx-tdm-objs := bf5xx-tdm.o
@@ -11,6 +12,7 @@ obj-$(CONFIG_SND_BF5XX_AC97) += snd-bf5xx-ac97.o
 obj-$(CONFIG_SND_BF5XX_I2S) += snd-bf5xx-i2s.o
 obj-$(CONFIG_SND_BF5XX_TDM) += snd-bf5xx-tdm.o
 obj-$(CONFIG_SND_BF5XX_SOC_SPORT) += snd-soc-bf5xx-sport.o
+obj-$(CONFIG_SND_BF6XX_SOC_SPORT) += snd-soc-bf6xx-sport.o
 obj-$(CONFIG_SND_BF5XX_SOC_AC97) += snd-soc-bf5xx-ac97.o
 obj-$(CONFIG_SND_BF5XX_SOC_I2S) += snd-soc-bf5xx-i2s.o
 obj-$(CONFIG_SND_BF5XX_SOC_TDM) += snd-soc-bf5xx-tdm.o
diff --git a/sound/soc/blackfin/bf6xx-sport.c b/sound/soc/blackfin/bf6xx-sport.c
new file mode 100644
index 000000000000..f19a72b8e0c2
--- /dev/null
+++ b/sound/soc/blackfin/bf6xx-sport.c
@@ -0,0 +1,422 @@
+/*
+ * bf6xx_sport.c Analog Devices BF6XX SPORT driver
+ *
+ * Copyright (c) 2012 Analog Devices Inc.
+ *
+ * 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.
+ *
+ * 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/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <asm/blackfin.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "bf6xx-sport.h"
+
+int sport_set_tx_params(struct sport_device *sport,
+                        struct sport_params *params)
+{
+        if (sport->tx_regs->spctl & SPORT_CTL_SPENPRI)
+                return -EBUSY;
+        sport->tx_regs->spctl = params->spctl | SPORT_CTL_SPTRAN;
+        sport->tx_regs->div = params->div;
+        SSYNC();
+        return 0;
+}
+EXPORT_SYMBOL(sport_set_tx_params);
+
+int sport_set_rx_params(struct sport_device *sport,
+                        struct sport_params *params)
+{
+        if (sport->rx_regs->spctl & SPORT_CTL_SPENPRI)
+                return -EBUSY;
+        sport->rx_regs->spctl = params->spctl & ~SPORT_CTL_SPTRAN;
+        sport->rx_regs->div = params->div;
+        SSYNC();
+        return 0;
+}
+EXPORT_SYMBOL(sport_set_rx_params);
+
+static int compute_wdsize(size_t wdsize)
+{
+        switch (wdsize) {
+        case 1:
+                return WDSIZE_8 | PSIZE_8;
+        case 2:
+                return WDSIZE_16 | PSIZE_16;
+        default:
+                return WDSIZE_32 | PSIZE_32;
+        }
+}
+
+void sport_tx_start(struct sport_device *sport)
+{
+        set_dma_next_desc_addr(sport->tx_dma_chan, sport->tx_desc);
+        set_dma_config(sport->tx_dma_chan, DMAFLOW_LIST | DI_EN
+                        | compute_wdsize(sport->wdsize) | NDSIZE_6);
+        enable_dma(sport->tx_dma_chan);
+        sport->tx_regs->spctl |= SPORT_CTL_SPENPRI;
+        SSYNC();
+}
+EXPORT_SYMBOL(sport_tx_start);
+
+void sport_rx_start(struct sport_device *sport)
+{
+        set_dma_next_desc_addr(sport->rx_dma_chan, sport->rx_desc);
+        set_dma_config(sport->rx_dma_chan, DMAFLOW_LIST | DI_EN | WNR
+                        | compute_wdsize(sport->wdsize) | NDSIZE_6);
+        enable_dma(sport->rx_dma_chan);
+        sport->rx_regs->spctl |= SPORT_CTL_SPENPRI;
+        SSYNC();
+}
+EXPORT_SYMBOL(sport_rx_start);
+
+void sport_tx_stop(struct sport_device *sport)
+{
+        sport->tx_regs->spctl &= ~SPORT_CTL_SPENPRI;
+        SSYNC();
+        disable_dma(sport->tx_dma_chan);
+}
+EXPORT_SYMBOL(sport_tx_stop);
+
+void sport_rx_stop(struct sport_device *sport)
+{
+        sport->rx_regs->spctl &= ~SPORT_CTL_SPENPRI;
+        SSYNC();
+        disable_dma(sport->rx_dma_chan);
+}
+EXPORT_SYMBOL(sport_rx_stop);
+
+void sport_set_tx_callback(struct sport_device *sport,
+                void (*tx_callback)(void *), void *tx_data)
+{
+        sport->tx_callback = tx_callback;
+        sport->tx_data = tx_data;
+}
+EXPORT_SYMBOL(sport_set_tx_callback);
+
+void sport_set_rx_callback(struct sport_device *sport,
+                void (*rx_callback)(void *), void *rx_data)
+{
+        sport->rx_callback = rx_callback;
+        sport->rx_data = rx_data;
+}
+EXPORT_SYMBOL(sport_set_rx_callback);
+
+static void setup_desc(struct dmasg *desc, void *buf, int fragcount,
+                size_t fragsize, unsigned int cfg,
+                unsigned int count, size_t wdsize)
+{
+
+        int i;
+
+        for (i = 0; i < fragcount; ++i) {
+                desc[i].next_desc_addr  = &(desc[i + 1]);
+                desc[i].start_addr = (unsigned long)buf + i*fragsize;
+                desc[i].cfg = cfg;
+                desc[i].x_count = count;
+                desc[i].x_modify = wdsize;
+                desc[i].y_count = 0;
+                desc[i].y_modify = 0;
+        }
+
+        /* make circular */
+        desc[fragcount-1].next_desc_addr = desc;
+}
+
+int sport_config_tx_dma(struct sport_device *sport, void *buf,
+                int fragcount, size_t fragsize)
+{
+        unsigned int count;
+        unsigned int cfg;
+        dma_addr_t addr;
+
+        count = fragsize/sport->wdsize;
+
+        if (sport->tx_desc)
+                dma_free_coherent(NULL, sport->tx_desc_size,
+                                sport->tx_desc, 0);
+
+        sport->tx_desc = dma_alloc_coherent(NULL,
+                        fragcount * sizeof(struct dmasg), &addr, 0);
+        sport->tx_desc_size = fragcount * sizeof(struct dmasg);
+        if (!sport->tx_desc)
+                return -ENOMEM;
+
+        sport->tx_buf = buf;
+        sport->tx_fragsize = fragsize;
+        sport->tx_frags = fragcount;
+        cfg = DMAFLOW_LIST | DI_EN | compute_wdsize(sport->wdsize) | NDSIZE_6;
+
+        setup_desc(sport->tx_desc, buf, fragcount, fragsize,
+                        cfg|DMAEN, count, sport->wdsize);
+
+        return 0;
+}
+EXPORT_SYMBOL(sport_config_tx_dma);
+
+int sport_config_rx_dma(struct sport_device *sport, void *buf,
+                int fragcount, size_t fragsize)
+{
+        unsigned int count;
+        unsigned int cfg;
+        dma_addr_t addr;
+
+        count = fragsize/sport->wdsize;
+
+        if (sport->rx_desc)
+                dma_free_coherent(NULL, sport->rx_desc_size,
+                                sport->rx_desc, 0);
+
+        sport->rx_desc = dma_alloc_coherent(NULL,
+                        fragcount * sizeof(struct dmasg), &addr, 0);
+        sport->rx_desc_size = fragcount * sizeof(struct dmasg);
+        if (!sport->rx_desc)
+                return -ENOMEM;
+
+        sport->rx_buf = buf;
+        sport->rx_fragsize = fragsize;
+        sport->rx_frags = fragcount;
+        cfg = DMAFLOW_LIST | DI_EN | compute_wdsize(sport->wdsize)
+                | WNR | NDSIZE_6;
+
+        setup_desc(sport->rx_desc, buf, fragcount, fragsize,
+                        cfg|DMAEN, count, sport->wdsize);
+
+        return 0;
+}
+EXPORT_SYMBOL(sport_config_rx_dma);
+
+unsigned long sport_curr_offset_tx(struct sport_device *sport)
+{
+        unsigned long curr = get_dma_curr_addr(sport->tx_dma_chan);
+
+        return (unsigned char *)curr - sport->tx_buf;
+}
+EXPORT_SYMBOL(sport_curr_offset_tx);
+
+unsigned long sport_curr_offset_rx(struct sport_device *sport)
+{
+        unsigned long curr = get_dma_curr_addr(sport->rx_dma_chan);
+
+        return (unsigned char *)curr - sport->rx_buf;
+}
+EXPORT_SYMBOL(sport_curr_offset_rx);
+
+static irqreturn_t sport_tx_irq(int irq, void *dev_id)
+{
+        struct sport_device *sport = dev_id;
+        static unsigned long status;
+
+        status = get_dma_curr_irqstat(sport->tx_dma_chan);
+        if (status & (DMA_DONE|DMA_ERR)) {
+                clear_dma_irqstat(sport->tx_dma_chan);
+                SSYNC();
+        }
+        if (sport->tx_callback)
+                sport->tx_callback(sport->tx_data);
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t sport_rx_irq(int irq, void *dev_id)
+{
+        struct sport_device *sport = dev_id;
+        unsigned long status;
+
+        status = get_dma_curr_irqstat(sport->rx_dma_chan);
+        if (status & (DMA_DONE|DMA_ERR)) {
+                clear_dma_irqstat(sport->rx_dma_chan);
+                SSYNC();
+        }
+        if (sport->rx_callback)
+                sport->rx_callback(sport->rx_data);
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t sport_err_irq(int irq, void *dev_id)
+{
+        struct sport_device *sport = dev_id;
+        struct device *dev = &sport->pdev->dev;
+
+        if (sport->tx_regs->spctl & SPORT_CTL_DERRPRI)
+                dev_dbg(dev, "sport error: TUVF\n");
+        if (sport->rx_regs->spctl & SPORT_CTL_DERRPRI)
+                dev_dbg(dev, "sport error: ROVF\n");
+
+        return IRQ_HANDLED;
+}
+
+static int sport_get_resource(struct sport_device *sport)
+{
+        struct platform_device *pdev = sport->pdev;
+        struct device *dev = &pdev->dev;
+        struct bfin_snd_platform_data *pdata = dev->platform_data;
+        struct resource *res;
+
+        if (!pdata) {
+                dev_err(dev, "No platform data\n");
+                return -ENODEV;
+        }
+        sport->pin_req = pdata->pin_req;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(dev, "No tx MEM resource\n");
+                return -ENODEV;
+        }
+        sport->tx_regs = (struct sport_register *)res->start;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!res) {
+                dev_err(dev, "No rx MEM resource\n");
+                return -ENODEV;
+        }
+        sport->rx_regs = (struct sport_register *)res->start;
+
+        res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+        if (!res) {
+                dev_err(dev, "No tx DMA resource\n");
+                return -ENODEV;
+        }
+        sport->tx_dma_chan = res->start;
+
+        res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+        if (!res) {
+                dev_err(dev, "No rx DMA resource\n");
+                return -ENODEV;
+        }
+        sport->rx_dma_chan = res->start;
+
+        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!res) {
+                dev_err(dev, "No tx error irq resource\n");
+                return -ENODEV;
+        }
+        sport->tx_err_irq = res->start;
+
+        res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+        if (!res) {
+                dev_err(dev, "No rx error irq resource\n");
+                return -ENODEV;
+        }
+        sport->rx_err_irq = res->start;
+
+        return 0;
+}
+
+static int sport_request_resource(struct sport_device *sport)
+{
+        struct device *dev = &sport->pdev->dev;
+        int ret;
+
+        ret = peripheral_request_list(sport->pin_req, "soc-audio");
+        if (ret) {
+                dev_err(dev, "Unable to request sport pin\n");
+                return ret;
+        }
+
+        ret = request_dma(sport->tx_dma_chan, "SPORT TX Data");
+        if (ret) {
+                dev_err(dev, "Unable to allocate DMA channel for sport tx\n");
+                goto err_tx_dma;
+        }
+        set_dma_callback(sport->tx_dma_chan, sport_tx_irq, sport);
+
+        ret = request_dma(sport->rx_dma_chan, "SPORT RX Data");
+        if (ret) {
+                dev_err(dev, "Unable to allocate DMA channel for sport rx\n");
+                goto err_rx_dma;
+        }
+        set_dma_callback(sport->rx_dma_chan, sport_rx_irq, sport);
+
+        ret = request_irq(sport->tx_err_irq, sport_err_irq,
+                        0, "SPORT TX ERROR", sport);
+        if (ret) {
+                dev_err(dev, "Unable to allocate tx error IRQ for sport\n");
+                goto err_tx_irq;
+        }
+
+        ret = request_irq(sport->rx_err_irq, sport_err_irq,
+                        0, "SPORT RX ERROR", sport);
+        if (ret) {
+                dev_err(dev, "Unable to allocate rx error IRQ for sport\n");
+                goto err_rx_irq;
+        }
+
+        return 0;
+err_rx_irq:
+        free_irq(sport->tx_err_irq, sport);
+err_tx_irq:
+        free_dma(sport->rx_dma_chan);
+err_rx_dma:
+        free_dma(sport->tx_dma_chan);
+err_tx_dma:
+        peripheral_free_list(sport->pin_req);
+        return ret;
+}
+
+static void sport_free_resource(struct sport_device *sport)
+{
+        free_irq(sport->rx_err_irq, sport);
+        free_irq(sport->tx_err_irq, sport);
+        free_dma(sport->rx_dma_chan);
+        free_dma(sport->tx_dma_chan);
+        peripheral_free_list(sport->pin_req);
+}
+
+struct sport_device *sport_create(struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct sport_device *sport;
+        int ret;
+
+        sport = kzalloc(sizeof(*sport), GFP_KERNEL);
+        if (!sport) {
+                dev_err(dev, "Unable to allocate memory for sport device\n");
+                return NULL;
+        }
+        sport->pdev = pdev;
+
+        ret = sport_get_resource(sport);
+        if (ret) {
+                kfree(sport);
+                return NULL;
+        }
+
+        ret = sport_request_resource(sport);
+        if (ret) {
+                kfree(sport);
+                return NULL;
+        }
+
+        dev_dbg(dev, "SPORT create success\n");
+        return sport;
+}
+EXPORT_SYMBOL(sport_create);
+
+void sport_delete(struct sport_device *sport)
+{
+        sport_free_resource(sport);
+}
+EXPORT_SYMBOL(sport_delete);
+
+MODULE_DESCRIPTION("Analog Devices BF6XX SPORT driver");
+MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/blackfin/bf6xx-sport.h b/sound/soc/blackfin/bf6xx-sport.h
new file mode 100644
index 000000000000..307d193cfcef
--- /dev/null
+++ b/sound/soc/blackfin/bf6xx-sport.h
@@ -0,0 +1,82 @@
+/*
+ * bf6xx_sport - Analog Devices BF6XX SPORT driver
+ *
+ * Copyright (c) 2012 Analog Devices Inc.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef _BF6XX_SPORT_H_
+#define _BF6XX_SPORT_H_
+
+#include <linux/platform_device.h>
+#include <asm/bfin_sport3.h>
+
+struct sport_device {
+        struct platform_device *pdev;
+        const unsigned short *pin_req;
+        struct sport_register *tx_regs;
+        struct sport_register *rx_regs;
+        int tx_dma_chan;
+        int rx_dma_chan;
+        int tx_err_irq;
+        int rx_err_irq;
+
+        void (*tx_callback)(void *data);
+        void *tx_data;
+        void (*rx_callback)(void *data);
+        void *rx_data;
+
+        struct dmasg *tx_desc;
+        struct dmasg *rx_desc;
+        unsigned int tx_desc_size;
+        unsigned int rx_desc_size;
+        unsigned char *tx_buf;
+        unsigned char *rx_buf;
+        unsigned int tx_fragsize;
+        unsigned int rx_fragsize;
+        unsigned int tx_frags;
+        unsigned int rx_frags;
+        unsigned int wdsize;
+};
+
+struct sport_params {
+        u32 spctl;
+        u32 div;
+};
+
+struct sport_device *sport_create(struct platform_device *pdev);
+void sport_delete(struct sport_device *sport);
+int sport_set_tx_params(struct sport_device *sport,
+                struct sport_params *params);
+int sport_set_rx_params(struct sport_device *sport,
+                struct sport_params *params);
+void sport_tx_start(struct sport_device *sport);
+void sport_rx_start(struct sport_device *sport);
+void sport_tx_stop(struct sport_device *sport);
+void sport_rx_stop(struct sport_device *sport);
+void sport_set_tx_callback(struct sport_device *sport,
+        void (*tx_callback)(void *), void *tx_data);
+void sport_set_rx_callback(struct sport_device *sport,
+        void (*rx_callback)(void *), void *rx_data);
+int sport_config_tx_dma(struct sport_device *sport, void *buf,
+        int fragcount, size_t fragsize);
+int sport_config_rx_dma(struct sport_device *sport, void *buf,
+        int fragcount, size_t fragsize);
+unsigned long sport_curr_offset_tx(struct sport_device *sport);
+unsigned long sport_curr_offset_rx(struct sport_device *sport);
+
+
+
+#endif