From: Rongjun Ying <Rongjun.Ying@csr.com> Universal Serial Ports (USP) can be used as PCM. this patch adds support for this functionality. The USP provides 128-byte data FIFO which supports DMA and I/O modes. Here we use the common DMA driver. Signed-off-by: Rongjun Ying <Rongjun.Ying@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> --- -v2: check the validation of div_id and rate for usp_pcm_divider; runtime PM enabled; use devm_clk_get instead of clk_get sound/soc/sirf/Kconfig | 3 + sound/soc/sirf/Makefile | 2 + sound/soc/sirf/sirf-usp.c | 481 ++++++++++++++++++++++++++++++++++++++++++++++ sound/soc/sirf/sirf-usp.h | 277 ++++++++++++++++++++++++++ 4 files changed, 763 insertions(+) create mode 100644 sound/soc/sirf/sirf-usp.c create mode 100644 sound/soc/sirf/sirf-usp.h diff --git a/sound/soc/sirf/Kconfig b/sound/soc/sirf/Kconfig index 5064cfc..5e395d3 100644 --- a/sound/soc/sirf/Kconfig +++ b/sound/soc/sirf/Kconfig @@ -5,3 +5,6 @@ config SND_SIRF_SOC config SND_SOC_SIRF_I2S tristate + +config SND_SOC_SIRF_USP + tristate diff --git a/sound/soc/sirf/Makefile b/sound/soc/sirf/Makefile index 9f754fe..630c9be 100644 --- a/sound/soc/sirf/Makefile +++ b/sound/soc/sirf/Makefile @@ -1,5 +1,7 @@ snd-soc-sirf-objs := sirf-pcm.o snd-soc-sirf-i2s-objs := sirf-i2s.o +snd-soc-sirf-usp-objs := sirf-usp.o obj-$(CONFIG_SND_SIRF_SOC) += snd-soc-sirf.o obj-$(CONFIG_SND_SOC_SIRF_I2S) += snd-soc-sirf-i2s.o +obj-$(CONFIG_SND_SOC_SIRF_USP) += snd-soc-sirf-usp.o diff --git a/sound/soc/sirf/sirf-usp.c b/sound/soc/sirf/sirf-usp.c new file mode 100644 index 0000000..da377e5 --- /dev/null +++ b/sound/soc/sirf/sirf-usp.c @@ -0,0 +1,481 @@ +/* + * SiRF USP audio transfer interface like I2S + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ +#include <linux/module.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/clk.h> +#include <linux/pm_runtime.h> +#include <sound/soc.h> +#include <sound/dmaengine_pcm.h> + +#include "sirf-usp.h" + +#define FIFO_RESET 0 +#define FIFO_START 1 +#define FIFO_STOP 2 + +#define AUDIO_WORD_SIZE 16 + +struct sirf_usp { + void __iomem *base; + struct clk *clk; + u32 mode1_reg; + u32 mode2_reg; + struct platform_device *sirf_pcm_pdev; +}; + +static struct snd_dmaengine_dai_dma_data dma_data[2]; + +static void sirf_usp_tx_fifo_op(struct sirf_usp *susp, int cmd) +{ + switch (cmd) { + case FIFO_RESET: + writel(USP_TX_FIFO_RESET, susp->base + USP_TX_FIFO_OP); + writel(0, susp->base + USP_TX_FIFO_OP); + break; + case FIFO_START: + writel(USP_TX_FIFO_START, susp->base + USP_TX_FIFO_OP); + break; + case FIFO_STOP: + writel(0, susp->base + USP_TX_FIFO_OP); + break; + } +} + +static void sirf_usp_rx_fifo_op(struct sirf_usp *susp, int cmd) +{ + switch (cmd) { + case FIFO_RESET: + writel(USP_RX_FIFO_RESET, susp->base + USP_RX_FIFO_OP); + writel(0, susp->base + USP_RX_FIFO_OP); + break; + case FIFO_START: + writel(USP_RX_FIFO_START, susp->base + USP_RX_FIFO_OP); + break; + case FIFO_STOP: + writel(0, susp->base + USP_RX_FIFO_OP); + break; + } +} + +static inline void sirf_usp_tx_enable(struct sirf_usp *susp) +{ + writel(readl(susp->base + USP_TX_RX_ENABLE) | USP_TX_ENA, + susp->base + USP_TX_RX_ENABLE); +} + +static inline void sirf_usp_tx_disable(struct sirf_usp *susp) +{ + writel(readl(susp->base + USP_TX_RX_ENABLE) & ~USP_TX_ENA, + susp->base + USP_TX_RX_ENABLE); +} + +static inline void sirf_usp_rx_enable(struct sirf_usp *susp) +{ + writel(readl(susp->base + USP_TX_RX_ENABLE) | USP_RX_ENA, + susp->base + USP_TX_RX_ENABLE); +} + +static inline void sirf_usp_rx_disable(struct sirf_usp *susp) +{ + writel(readl(susp->base + USP_TX_RX_ENABLE) & ~USP_RX_ENA, + susp->base + USP_TX_RX_ENABLE); +} + +static int sirf_usp_pcm_dai_probe(struct snd_soc_dai *dai) +{ + dai->playback_dma_data = &dma_data[0]; + dai->capture_dma_data = &dma_data[1]; + return 0; +} + +static int sirf_usp_pcm_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + pm_runtime_get_sync(dai->dev); + return 0; +} + +static void sirf_usp_pcm_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + pm_runtime_put(dai->dev); +} + +static int sirf_usp_pcm_set_dai_fmt(struct snd_soc_dai *dai, + unsigned int fmt) +{ + struct sirf_usp *susp = snd_soc_dai_get_drvdata(dai); + u32 val = readl(susp->base + USP_MODE2); + u32 val1 = readl(susp->base + USP_MODE1); + + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + val1 &= ~USP_CLOCK_MODE_SLAVE; + val &= ~USP_TFS_CLK_SLAVE_MODE; + val &= ~USP_RFS_CLK_SLAVE_MODE; + break; + case SND_SOC_DAIFMT_CBM_CFM: + val1 |= USP_CLOCK_MODE_SLAVE; + val |= USP_TFS_CLK_SLAVE_MODE; + val |= USP_RFS_CLK_SLAVE_MODE; + break; + default: + return -EINVAL; + } + writel(val1, susp->base + USP_MODE1); + writel(val, susp->base + USP_MODE2); + + return 0; +} + +static int sirf_usp_pcm_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + int playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + struct sirf_usp *susp = snd_soc_dai_get_drvdata(dai); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (playback) { + sirf_usp_tx_fifo_op(susp, FIFO_RESET); + sirf_usp_tx_fifo_op(susp, FIFO_START); + sirf_usp_tx_enable(susp); + } else { + sirf_usp_rx_fifo_op(susp, FIFO_RESET); + sirf_usp_rx_fifo_op(susp, FIFO_START); + sirf_usp_rx_enable(susp); + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (playback) { + sirf_usp_tx_disable(susp); + sirf_usp_tx_fifo_op(susp, FIFO_STOP); + } else { + sirf_usp_rx_disable(susp); + sirf_usp_rx_fifo_op(susp, FIFO_STOP); + } + break; + } + + return 0; +} + +static int sirf_usp_pcm_divider(struct snd_soc_dai *dai, int div_id, int rate) +{ + struct sirf_usp *susp = snd_soc_dai_get_drvdata(dai); + u32 clk_rate, clk_div, clk_div_hi, clk_div_lo; + + if (div_id != SIRF_USP_DIV_MCLK) + return -EINVAL; + + clk_rate = clk_get_rate(susp->clk); + if (clk_rate < rate * 2) { + dev_err(dai->dev, "Can't get rate(%d) by need.\n", rate); + return -EINVAL; + } + + clk_div = (clk_rate / (2 * rate)) - 1; + clk_div_hi = (clk_div & 0xC00) >> 10; + clk_div_lo = (clk_div & 0x3FF); + + writel((clk_div_lo << 21) | readl(susp->base + USP_MODE2), + susp->base + USP_MODE2); + writel((clk_div_hi << 30) | readl(susp->base + USP_TX_FRAME_CTRL), + susp->base + USP_TX_FRAME_CTRL); + + return 0; +} + +static const struct snd_soc_dai_ops sirf_usp_pcm_dai_ops = { + .startup = sirf_usp_pcm_startup, + .trigger = sirf_usp_pcm_trigger, + .set_fmt = sirf_usp_pcm_set_dai_fmt, + .set_clkdiv = sirf_usp_pcm_divider, + .shutdown = sirf_usp_pcm_shutdown, +}; + +static struct snd_soc_dai_driver sirf_usp_pcm_dai = { + .probe = sirf_usp_pcm_dai_probe, + .name = "sirf-usp-pcm", + .id = 0, + .playback = { + .stream_name = "SiRF USP PCM Playback", + .channels_min = 1, + .channels_max = 1, + .rates = SNDRV_PCM_RATE_48000 + | SNDRV_PCM_RATE_44100 + | SNDRV_PCM_RATE_32000 + | SNDRV_PCM_RATE_22050 + | SNDRV_PCM_RATE_16000 + | SNDRV_PCM_RATE_11025 + | SNDRV_PCM_RATE_8000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .stream_name = "SiRF USP PCM Capture", + .channels_min = 1, + .channels_max = 1, + .rates = SNDRV_PCM_RATE_48000 + | SNDRV_PCM_RATE_44100 + | SNDRV_PCM_RATE_32000 + | SNDRV_PCM_RATE_22050 + | SNDRV_PCM_RATE_16000 + | SNDRV_PCM_RATE_11025 + | SNDRV_PCM_RATE_8000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &sirf_usp_pcm_dai_ops, +}; + +static void sirf_usp_controller_init(struct sirf_usp *susp) +{ + u32 val; + + /* Configure RISC mode */ + writel(readl(susp->base + USP_RISC_DSP_MODE) & ~USP_RISC_DSP_SEL, + susp->base + USP_RISC_DSP_MODE); + + /* Disable all interrupts status */ + writel(readl(susp->base + USP_INT_STATUS), susp->base + USP_INT_STATUS); + + /* Configure DMA IO Length register */ + writel(0, susp->base + USP_TX_DMA_IO_LEN); + writel(0, susp->base + USP_RX_DMA_IO_LEN); + + /* Configure RX Frame Control */ + val = (AUDIO_WORD_SIZE * 2 - 1) << USP_RXC_DATA_LEN_OFFSET; + val |= (AUDIO_WORD_SIZE * 2 - 1) << USP_RXC_FRAME_LEN_OFFSET; + val |= (AUDIO_WORD_SIZE * 2 - 1) << USP_RXC_SHIFTER_LEN_OFFSET; + val |= USP_SINGLE_SYNC_MODE; + writel(val, susp->base + USP_RX_FRAME_CTRL); + + /* Configure TX Frame Control */ + val = (AUDIO_WORD_SIZE * 2 - 1) << USP_TXC_DATA_LEN_OFFSET; + val |= 0 << USP_TXC_SYNC_LEN_OFFSET; + val |= (AUDIO_WORD_SIZE * 2 - 1) << USP_TXC_FRAME_LEN_OFFSET; + val |= (AUDIO_WORD_SIZE * 2 - 1) << USP_TXC_SHIFTER_LEN_OFFSET; + val |= USP_TXC_SLAVE_CLK_SAMPLE; + writel(val, susp->base + USP_TX_FRAME_CTRL); + + /* Configure Mode2 register */ + val = (1 << USP_RXD_DELAY_LEN_OFFSET) | (0 << USP_TXD_DELAY_LEN_OFFSET); + val &= ~USP_ENA_CTRL_MODE; + val &= ~USP_FRAME_CTRL_MODE; + val &= ~USP_TFS_SOURCE_MODE; + writel(val, susp->base + USP_MODE2); + + /* Configure Mode1 register */ + val = 0; + val |= USP_SYNC_MODE; + val |= USP_ENDIAN_CTRL_LSBF; + val |= USP_EN; + val |= USP_RXD_ACT_EDGE_FALLING; + val &= ~USP_TXD_ACT_EDGE_FALLING; + val |= USP_RFS_ACT_LEVEL_LOGIC1; + val |= USP_TFS_ACT_LEVEL_LOGIC1; + val |= USP_SCLK_IDLE_MODE_TOGGLE; + val |= USP_SCLK_IDLE_LEVEL_LOGIC1; + val &= ~USP_SCLK_PIN_MODE_IO; + val &= ~USP_RFS_PIN_MODE_IO; + val &= ~USP_TFS_PIN_MODE_IO; + val &= ~USP_RXD_PIN_MODE_IO; + val &= ~USP_TXD_PIN_MODE_IO; + val |= USP_TX_UFLOW_REPEAT_ZERO; + writel(val, susp->base + USP_MODE1); + + /* Configure RX DMA IO Control register */ + writel(0x0, susp->base + USP_RX_DMA_IO_CTRL); + + /* Congiure RX FIFO Control register */ + writel((USP_RX_FIFO_THRESHOLD << USP_RX_FIFO_THD_OFFSET) | + (USP_TX_RX_FIFO_WIDTH_DWORD << USP_RX_FIFO_WIDTH_OFFSET), + susp->base + USP_RX_FIFO_CTRL); + + /* Congiure RX FIFO Level Check register */ + writel(RX_FIFO_SC(0x04) | RX_FIFO_LC(0x0E) | RX_FIFO_HC(0x1B), + susp->base + USP_RX_FIFO_LEVEL_CHK); + + /* Configure TX DMA IO Control register*/ + writel(0x0, susp->base + USP_TX_DMA_IO_CTRL); + + /* Configure TX FIFO Control register */ + writel((USP_TX_FIFO_THRESHOLD << USP_TX_FIFO_THD_OFFSET) | + (USP_TX_RX_FIFO_WIDTH_DWORD << USP_TX_FIFO_WIDTH_OFFSET), + susp->base + USP_TX_FIFO_CTRL); + + /* Congiure TX FIFO Level Check register */ + writel(TX_FIFO_SC(0x1B) | TX_FIFO_LC(0x0E) | TX_FIFO_HC(0x04), + susp->base + USP_TX_FIFO_LEVEL_CHK); + + /* Configure RX FIFO */ + writel(USP_RX_FIFO_RESET, susp->base + USP_RX_FIFO_OP); + writel(0, susp->base + USP_RX_FIFO_OP); + + /* Configure TX FIFO */ + writel(USP_TX_FIFO_RESET, susp->base + USP_TX_FIFO_OP); + writel(0, susp->base + USP_TX_FIFO_OP); +} + +static void sirf_usp_controller_uninit(struct sirf_usp *susp) +{ + /* Disable RX/TX */ + writel(0, susp->base + USP_INT_ENABLE); + writel(0, susp->base + USP_TX_RX_ENABLE); +} + +#ifdef CONFIG_PM_RUNTIME +static int sirf_usp_pcm_runtime_suspend(struct device *dev) +{ + struct sirf_usp *susp = dev_get_drvdata(dev); + sirf_usp_controller_uninit(susp); + clk_disable_unprepare(susp->clk); + return 0; +} + +static int sirf_usp_pcm_runtime_resume(struct device *dev) +{ + struct sirf_usp *susp = dev_get_drvdata(dev); + clk_prepare_enable(susp->clk); + sirf_usp_controller_init(susp); + return 0; +} +#endif + +#ifdef CONFIG_PM_SLEEP +static int sirf_usp_pcm_suspend(struct device *dev) +{ + struct sirf_usp *susp = dev_get_drvdata(dev); + + if (!pm_runtime_status_suspended(dev)) { + susp->mode1_reg = readl(susp->base + USP_MODE1); + susp->mode2_reg = readl(susp->base + USP_MODE2); + sirf_usp_pcm_runtime_suspend(dev); + } + return 0; +} + +static int sirf_usp_pcm_resume(struct device *dev) +{ + struct sirf_usp *susp = dev_get_drvdata(dev); + + if (!pm_runtime_status_suspended(dev)) { + sirf_usp_pcm_runtime_resume(dev); + writel(susp->mode1_reg, susp->base + USP_MODE1); + writel(susp->mode2_reg, susp->base + USP_MODE2); + } + return 0; +} +#endif + +static const struct snd_soc_component_driver sirf_usp_component = { + .name = "sirf-usp", +}; + +static int sirf_usp_pcm_probe(struct platform_device *pdev) +{ + struct sirf_usp *susp; + u32 rx_dma_ch, tx_dma_ch; + int ret; + struct resource *mem_res; + + susp = devm_kzalloc(&pdev->dev, sizeof(struct sirf_usp), + GFP_KERNEL); + if (!susp) + return -ENOMEM; + + susp->sirf_pcm_pdev = platform_device_register_simple("sirf-pcm-audio", + 2, NULL, 0); + if (IS_ERR(susp->sirf_pcm_pdev)) + return PTR_ERR(susp->sirf_pcm_pdev); + + platform_set_drvdata(pdev, susp); + + ret = of_property_read_u32(pdev->dev.of_node, + "sirf,usp-dma-rx-channel", &rx_dma_ch); + if (ret < 0) { + dev_err(&pdev->dev, "Unable to USP0 rx dma channel\n"); + return ret; + } + ret = of_property_read_u32(pdev->dev.of_node, + "sirf,usp-dma-tx-channel", &tx_dma_ch); + if (ret < 0) { + dev_err(&pdev->dev, "Unable to USP0 tx dma channel\n"); + return ret; + } + + dma_data[0].filter_data = (void *)tx_dma_ch; + dma_data[1].filter_data = (void *)rx_dma_ch; + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + susp->base = devm_ioremap_resource(&pdev->dev, mem_res); + if (susp->base == NULL) + return -ENOMEM; + + susp->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(susp->clk)) { + dev_err(&pdev->dev, "Get clock failed.\n"); + return PTR_ERR(susp->clk); + } + clk_prepare_enable(susp->clk); + + ret = snd_soc_register_component(&pdev->dev, &sirf_usp_component, + &sirf_usp_pcm_dai, 1); + if (ret) { + dev_err(&pdev->dev, "Register Audio SoC dai failed.\n"); + goto err; + } + pm_runtime_enable(&pdev->dev); + return 0; + +err: + return ret; +} + +static int sirf_usp_pcm_remove(struct platform_device *pdev) +{ + struct sirf_usp *susp = platform_get_drvdata(pdev); + snd_soc_unregister_component(&pdev->dev); + pm_runtime_disable(&pdev->dev); + platform_device_unregister(susp->sirf_pcm_pdev); + + return 0; +} + +static const struct of_device_id sirf_usp_pcm_of_match[] = { + { .compatible = "sirf,prima2-usp-pcm", }, + {} +}; +MODULE_DEVICE_TABLE(of, sirf_usp_pcm_of_match); + +static const struct dev_pm_ops sirf_usp_pcm_pm_ops = { + SET_RUNTIME_PM_OPS(sirf_usp_pcm_runtime_suspend, sirf_usp_pcm_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(sirf_usp_pcm_suspend, sirf_usp_pcm_resume) +}; + +static struct platform_driver sirf_usp_pcm_driver = { + .driver = { + .name = "sirf-usp-pcm", + .owner = THIS_MODULE, + .of_match_table = sirf_usp_pcm_of_match, + .pm = &sirf_usp_pcm_pm_ops, + }, + .probe = sirf_usp_pcm_probe, + .remove = sirf_usp_pcm_remove, +}; + +module_platform_driver(sirf_usp_pcm_driver); + +MODULE_DESCRIPTION("SiRF SoC USP PCM bus driver"); +MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/sirf/sirf-usp.h b/sound/soc/sirf/sirf-usp.h new file mode 100644 index 0000000..62afc0d --- /dev/null +++ b/sound/soc/sirf/sirf-usp.h @@ -0,0 +1,277 @@ +/* + * arch/arm/mach-prima2/include/mach/sirfsoc_usp.h + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ + +#ifndef __SIRFSOC_USP__ +#define __SIRFSOC_USP__ + +/* USP Registers */ +#define USP_MODE1 0x00 +#define USP_MODE2 0x04 +#define USP_TX_FRAME_CTRL 0x08 +#define USP_RX_FRAME_CTRL 0x0C +#define USP_TX_RX_ENABLE 0x10 +#define USP_INT_ENABLE 0x14 +#define USP_INT_STATUS 0x18 +#define USP_PIN_IO_DATA 0x1C +#define USP_RISC_DSP_MODE 0x20 +#define USP_AYSNC_PARAM_REG 0x24 +#define USP_IRDA_X_MODE_DIV 0x28 +#define USP_SM_CFG 0x2C +#define USP_TX_DMA_IO_CTRL 0x100 +#define USP_TX_DMA_IO_LEN 0x104 +#define USP_TX_FIFO_CTRL 0x108 +#define USP_TX_FIFO_LEVEL_CHK 0x10C +#define USP_TX_FIFO_OP 0x110 +#define USP_TX_FIFO_STATUS 0x114 +#define USP_TX_FIFO_DATA 0x118 +#define USP_RX_DMA_IO_CTRL 0x120 +#define USP_RX_DMA_IO_LEN 0x124 +#define USP_RX_FIFO_CTRL 0x128 +#define USP_RX_FIFO_LEVEL_CHK 0x12C +#define USP_RX_FIFO_OP 0x130 +#define USP_RX_FIFO_STATUS 0x134 +#define USP_RX_FIFO_DATA 0x138 + +/* USP MODE register-1 */ +#define USP_SYNC_MODE 0x00000001 +#define USP_CLOCK_MODE_SLAVE 0x00000002 +#define USP_LOOP_BACK_EN 0x00000004 +#define USP_HPSIR_EN 0x00000008 +#define USP_ENDIAN_CTRL_LSBF 0x00000010 +#define USP_EN 0x00000020 +#define USP_RXD_ACT_EDGE_FALLING 0x00000040 +#define USP_TXD_ACT_EDGE_FALLING 0x00000080 +#define USP_RFS_ACT_LEVEL_LOGIC1 0x00000100 +#define USP_TFS_ACT_LEVEL_LOGIC1 0x00000200 +#define USP_SCLK_IDLE_MODE_TOGGLE 0x00000400 +#define USP_SCLK_IDLE_LEVEL_LOGIC1 0x00000800 +#define USP_SCLK_PIN_MODE_IO 0x00001000 +#define USP_RFS_PIN_MODE_IO 0x00002000 +#define USP_TFS_PIN_MODE_IO 0x00004000 +#define USP_RXD_PIN_MODE_IO 0x00008000 +#define USP_TXD_PIN_MODE_IO 0x00010000 +#define USP_SCLK_IO_MODE_INPUT 0x00020000 +#define USP_RFS_IO_MODE_INPUT 0x00040000 +#define USP_TFS_IO_MODE_INPUT 0x00080000 +#define USP_RXD_IO_MODE_INPUT 0x00100000 +#define USP_TXD_IO_MODE_INPUT 0x00200000 +#define USP_IRDA_WIDTH_DIV_MASK 0x3FC00000 +#define USP_IRDA_WIDTH_DIV_OFFSET 0 +#define USP_IRDA_IDLE_LEVEL_HIGH 0x40000000 +#define USP_TX_UFLOW_REPEAT_ZERO 0x80000000 +#define USP_TX_ENDIAN_MODE 0x00000020 +#define USP_RX_ENDIAN_MODE 0x00000020 + +/* USP Mode Register-2 */ +#define USP_RXD_DELAY_LEN_MASK 0x000000FF +#define USP_RXD_DELAY_LEN_OFFSET 0 + +#define USP_TXD_DELAY_LEN_MASK 0x0000FF00 +#define USP_TXD_DELAY_LEN_OFFSET 8 + +#define USP_ENA_CTRL_MODE 0x00010000 +#define USP_FRAME_CTRL_MODE 0x00020000 +#define USP_TFS_SOURCE_MODE 0x00040000 +#define USP_TFS_MS_MODE 0x00080000 +#define USP_CLK_DIVISOR_MASK 0x7FE00000 +#define USP_CLK_DIVISOR_OFFSET 21 + +#define USP_TFS_CLK_SLAVE_MODE (1<<20) +#define USP_RFS_CLK_SLAVE_MODE (1<<19) + +#define USP_IRDA_DATA_WIDTH 0x80000000 + +/* USP Transmit Frame Control Register */ + +#define USP_TXC_DATA_LEN_MASK 0x000000FF +#define USP_TXC_DATA_LEN_OFFSET 0 + +#define USP_TXC_SYNC_LEN_MASK 0x0000FF00 +#define USP_TXC_SYNC_LEN_OFFSET 8 + +#define USP_TXC_FRAME_LEN_MASK 0x00FF0000 +#define USP_TXC_FRAME_LEN_OFFSET 16 + +#define USP_TXC_SHIFTER_LEN_MASK 0x1F000000 +#define USP_TXC_SHIFTER_LEN_OFFSET 24 + +#define USP_TXC_SLAVE_CLK_SAMPLE 0x20000000 + +#define USP_TXC_CLK_DIVISOR_MASK 0xC0000000 +#define USP_TXC_CLK_DIVISOR_OFFSET 30 + +/* USP Receive Frame Control Register */ + +#define USP_RXC_DATA_LEN_MASK 0x000000FF +#define USP_RXC_DATA_LEN_OFFSET 0 + +#define USP_RXC_FRAME_LEN_MASK 0x0000FF00 +#define USP_RXC_FRAME_LEN_OFFSET 8 + +#define USP_RXC_SHIFTER_LEN_MASK 0x001F0000 +#define USP_RXC_SHIFTER_LEN_OFFSET 16 + +#define USP_I2S_SYNC_CHG 0x00200000 + +#define USP_RXC_CLK_DIVISOR_MASK 0x0F000000 +#define USP_RXC_CLK_DIVISOR_OFFSET 24 +#define USP_SINGLE_SYNC_MODE 0x00400000 + +/* Tx - RX Enable Register */ + +#define USP_RX_ENA 0x00000001 +#define USP_TX_ENA 0x00000002 + +/* USP Interrupt Enable and status Register */ +#define USP_RX_DONE_INT 0x00000001 +#define USP_TX_DONE_INT 0x00000002 +#define USP_RX_OFLOW_INT 0x00000004 +#define USP_TX_UFLOW_INT 0x00000008 +#define USP_RX_IO_DMA_INT 0x00000010 +#define USP_TX_IO_DMA_INT 0x00000020 +#define USP_RXFIFO_FULL_INT 0x00000040 +#define USP_TXFIFO_EMPTY_INT 0x00000080 +#define USP_RXFIFO_THD_INT 0x00000100 +#define USP_TXFIFO_THD_INT 0x00000200 +#define USP_UART_FRM_ERR_INT 0x00000400 +#define USP_RX_TIMEOUT_INT 0x00000800 +#define USP_TX_ALLOUT_INT 0x00001000 +#define USP_RXD_BREAK_INT 0x00008000 + +/* All possible TX interruots */ +#define USP_TX_INTERRUPT (USP_TX_DONE_INT|USP_TX_UFLOW_INT|USP_TX_IO_DMA_INT|\ + USP_TXFIFO_EMPTY_INT|USP_TXFIFO_THD_INT) +/* All possible RX interruots */ +#define USP_RX_INTERRUPT (USP_RX_DONE_INT|USP_RX_OFLOW_INT|USP_RX_IO_DMA_INT|\ + USP_RXFIFO_FULL_INT|USP_RXFIFO_THD_INT|USP_RXFIFO_THD_INT|USP_RX_TIMEOUT_INT) + +#define USP_INT_ALL 0x1FFF + +/* USP Pin I/O Data Register */ + +#define USP_RFS_PIN_VALUE_MASK 0x00000001 +#define USP_TFS_PIN_VALUE_MASK 0x00000002 +#define USP_RXD_PIN_VALUE_MASK 0x00000004 +#define USP_TXD_PIN_VALUE_MASK 0x00000008 +#define USP_SCLK_PIN_VALUE_MASK 0x00000010 + +/* USP RISC/DSP Mode Register */ +#define USP_RISC_DSP_SEL 0x00000001 + +/* USP ASYNC PARAMETER Register*/ + +#define USP_ASYNC_TIMEOUT_MASK 0x0000FFFF +#define USP_ASYNC_TIMEOUT_OFFSET 0 +#define USP_ASYNC_TIMEOUT(x) (((x)&USP_ASYNC_TIMEOUT_MASK)<<USP_ASYNC_TIMEOUT_OFFSET) + +#define USP_ASYNC_DIV2_MASK 0x003F0000 +#define USP_ASYNC_DIV2_OFFSET 16 + +/* USP TX DMA I/O MODE Register */ +#define USP_TX_MODE_IO 0x00000001 + +/* USP TX DMA I/O Length Register */ +#define USP_TX_DATA_LEN_MASK 0xFFFFFFFF +#define USP_TX_DATA_LEN_OFFSET 0 + +/* USP TX FIFO Control Register */ +#define USP_TX_FIFO_WIDTH_MASK 0x00000003 +#define USP_TX_FIFO_WIDTH_OFFSET 0 + +#define USP_TX_FIFO_THD_MASK 0x000001FC +#define USP_TX_FIFO_THD_OFFSET 2 + +/* USP TX FIFO Level Check Register */ +#define USP_TX_FIFO_LEVEL_CHECK_MASK 0x1F +#define USP_TX_FIFO_SC_OFFSET 0 +#define USP_TX_FIFO_LC_OFFSET 10 +#define USP_TX_FIFO_HC_OFFSET 20 + +#define TX_FIFO_SC(x) (((x) & USP_TX_FIFO_LEVEL_CHECK_MASK) << USP_TX_FIFO_SC_OFFSET) +#define TX_FIFO_LC(x) (((x) & USP_TX_FIFO_LEVEL_CHECK_MASK) << USP_TX_FIFO_LC_OFFSET) +#define TX_FIFO_HC(x) (((x) & USP_TX_FIFO_LEVEL_CHECK_MASK) << USP_TX_FIFO_HC_OFFSET) + +/* USP TX FIFO Operation Register */ +#define USP_TX_FIFO_RESET 0x00000001 +#define USP_TX_FIFO_START 0x00000002 + +/* USP TX FIFO Status Register */ +#define USP_TX_FIFO_LEVEL_MASK 0x0000007F +#define USP_TX_FIFO_LEVEL_OFFSET 0 + +#define USP_TX_FIFO_FULL 0x00000080 +#define USP_TX_FIFO_EMPTY 0x00000100 + +/* USP TX FIFO Data Register */ +#define USP_TX_FIFO_DATA_MASK 0xFFFFFFFF +#define USP_TX_FIFO_DATA_OFFSET 0 + +/* USP RX DMA I/O MODE Register */ +#define USP_RX_MODE_IO 0x00000001 +#define USP_RX_DMA_FLUSH 0x00000004 + +/* USP RX DMA I/O Length Register */ +#define USP_RX_DATA_LEN_MASK 0xFFFFFFFF +#define USP_RX_DATA_LEN_OFFSET 0 + +/* USP RX FIFO Control Register */ +#define USP_RX_FIFO_WIDTH_MASK 0x00000003 +#define USP_RX_FIFO_WIDTH_OFFSET 0 + +#define USP_RX_FIFO_THD_MASK 0x000001FC +#define USP_RX_FIFO_THD_OFFSET 2 + +/* USP RX FIFO Level Check Register */ + +#define USP_RX_FIFO_LEVEL_CHECK_MASK 0x1F +#define USP_RX_FIFO_SC_OFFSET 0 +#define USP_RX_FIFO_LC_OFFSET 10 +#define USP_RX_FIFO_HC_OFFSET 20 + +#define RX_FIFO_SC(x) (((x) & USP_RX_FIFO_LEVEL_CHECK_MASK) << USP_RX_FIFO_SC_OFFSET) +#define RX_FIFO_LC(x) (((x) & USP_RX_FIFO_LEVEL_CHECK_MASK) << USP_RX_FIFO_LC_OFFSET) +#define RX_FIFO_HC(x) (((x) & USP_RX_FIFO_LEVEL_CHECK_MASK) << USP_RX_FIFO_HC_OFFSET) + +/* USP RX FIFO Operation Register */ +#define USP_RX_FIFO_RESET 0x00000001 +#define USP_RX_FIFO_START 0x00000002 + +/* USP RX FIFO Status Register */ + +#define USP_RX_FIFO_LEVEL_MASK 0x0000007F +#define USP_RX_FIFO_LEVEL_OFFSET 0 + +#define USP_RX_FIFO_FULL 0x00000080 +#define USP_RX_FIFO_EMPTY 0x00000100 + +/* USP RX FIFO Data Register */ + +#define USP_RX_FIFO_DATA_MASK 0xFFFFFFFF +#define USP_RX_FIFO_DATA_OFFSET 0 + +/* + * When rx thd irq occur, sender just disable tx empty irq, + * Remaining data in tx fifo wil also be sent out. + */ +#define USP_FIFO_SIZE 128 +#define USP_TX_FIFO_THRESHOLD (USP_FIFO_SIZE/2) +#define USP_RX_FIFO_THRESHOLD (USP_FIFO_SIZE/2) + +/* FIFO_WIDTH for the USP_TX_FIFO_CTRL and USP_RX_FIFO_CTRL registers */ +#define USP_FIFO_WIDTH_BYTE 0x00 +#define USP_FIFO_WIDTH_WORD 0x01 +#define USP_FIFO_WIDTH_DWORD 0x02 + +#define USP_ASYNC_DIV2 16 + +#define USP_PLUGOUT_RETRY_CNT 2 + +#define USP_TX_RX_FIFO_WIDTH_DWORD 2 + +#define SIRF_USP_DIV_MCLK 0 +#endif -- 1.8.2.3