diff options
author | Eduardo Valentin <eduardo.valentin@indt.org.br> | 2008-07-03 09:24:39 (GMT) |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2008-07-03 09:24:39 (GMT) |
commit | bc5d0c89c88df67f92d5d5882c27437379e9e8af (patch) | |
tree | 56ed4beca70ed8485244e8c1a494e72d06ca367d | |
parent | fb78d80808a75213f399b7b10048d72a0b39b494 (diff) | |
download | linux-fsl-qoriq-bc5d0c89c88df67f92d5d5882c27437379e9e8af.tar.xz |
ARM: OMAP: McBSP: Prepare for splitting into omap1 and omap2 code
This patch transform mcbsp code to use platform data
from arch/arm/plat-omap/devices.c
It also gets ride of ifdefs on mcbsp.c code.
To do it, a platform data structure was defined.
Signed-off-by: Eduardo Valentin <eduardo.valentin@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
-rw-r--r-- | arch/arm/plat-omap/devices.c | 48 | ||||
-rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 662 | ||||
-rw-r--r-- | include/asm-arm/arch-omap/mcbsp.h | 62 |
3 files changed, 361 insertions, 411 deletions
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c index 4a53f9b..81002b7 100644 --- a/arch/arm/plat-omap/devices.c +++ b/arch/arm/plat-omap/devices.c @@ -24,6 +24,7 @@ #include <asm/arch/mux.h> #include <asm/arch/gpio.h> #include <asm/arch/menelaus.h> +#include <asm/arch/mcbsp.h> #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE) @@ -145,6 +146,53 @@ static inline void omap_init_kp(void) {} #endif /*-------------------------------------------------------------------------*/ +#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE) + +static struct platform_device **omap_mcbsp_devices; + +void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, + int size) +{ + int i; + + if (size > OMAP_MAX_MCBSP_COUNT) { + printk(KERN_WARNING "Registered too many McBSPs platform_data." + " Using maximum (%d) available.\n", + OMAP_MAX_MCBSP_COUNT); + size = OMAP_MAX_MCBSP_COUNT; + } + + omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *), + GFP_KERNEL); + if (!omap_mcbsp_devices) { + printk(KERN_ERR "Could not register McBSP devices\n"); + return; + } + + for (i = 0; i < size; i++) { + struct platform_device *new_mcbsp; + int ret; + + new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1); + if (!new_mcbsp) + continue; + new_mcbsp->dev.platform_data = &config[i]; + ret = platform_device_add(new_mcbsp); + if (ret) { + platform_device_put(new_mcbsp); + continue; + } + omap_mcbsp_devices[i] = new_mcbsp; + } +} + +#else +void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, + int size) +{ } +#endif + +/*-------------------------------------------------------------------------*/ #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index c0018b1..c7f7406 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/device.h> +#include <linux/platform_device.h> #include <linux/wait.h> #include <linux/completion.h> #include <linux/interrupt.h> @@ -24,83 +25,53 @@ #include <linux/io.h> #include <asm/arch/dma.h> -#include <asm/arch/mux.h> -#include <asm/arch/irqs.h> -#include <asm/arch/dsp_common.h> #include <asm/arch/mcbsp.h> -#ifdef CONFIG_MCBSP_DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) do { } while (0) -#endif - -struct omap_mcbsp { - u32 io_base; - u8 id; - u8 free; - omap_mcbsp_word_length rx_word_length; - omap_mcbsp_word_length tx_word_length; - - omap_mcbsp_io_type_t io_type; /* IRQ or poll */ - /* IRQ based TX/RX */ - int rx_irq; - int tx_irq; - - /* DMA stuff */ - u8 dma_rx_sync; - short dma_rx_lch; - u8 dma_tx_sync; - short dma_tx_lch; - - /* Completion queues */ - struct completion tx_irq_completion; - struct completion rx_irq_completion; - struct completion tx_dma_completion; - struct completion rx_dma_completion; - - /* Protect the field .free, while checking if the mcbsp is in use */ - spinlock_t lock; -}; - static struct omap_mcbsp mcbsp[OMAP_MAX_MCBSP_COUNT]; -#ifdef CONFIG_ARCH_OMAP1 -static struct clk *mcbsp_dsp_ck; -static struct clk *mcbsp_api_ck; -static struct clk *mcbsp_dspxor_ck; -#endif -#ifdef CONFIG_ARCH_OMAP2 -static struct clk *mcbsp1_ick; -static struct clk *mcbsp1_fck; -static struct clk *mcbsp2_ick; -static struct clk *mcbsp2_fck; -#endif + +#define omap_mcbsp_check_valid_id(id) (mcbsp[id].pdata && \ + mcbsp[id].pdata->ops && \ + mcbsp[id].pdata->ops->check && \ + (mcbsp[id].pdata->ops->check(id) == 0)) static void omap_mcbsp_dump_reg(u8 id) { - DBG("**** MCBSP%d regs ****\n", mcbsp[id].id); - DBG("DRR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, DRR2)); - DBG("DRR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, DRR1)); - DBG("DXR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, DXR2)); - DBG("DXR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, DXR1)); - DBG("SPCR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, SPCR2)); - DBG("SPCR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, SPCR1)); - DBG("RCR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, RCR2)); - DBG("RCR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, RCR1)); - DBG("XCR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, XCR2)); - DBG("XCR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, XCR1)); - DBG("SRGR2: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, SRGR2)); - DBG("SRGR1: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, SRGR1)); - DBG("PCR0: 0x%04x\n", OMAP_MCBSP_READ(mcbsp[id].io_base, PCR0)); - DBG("***********************\n"); + dev_dbg(mcbsp[id].dev, "**** McBSP%d regs ****\n", mcbsp[id].id); + dev_dbg(mcbsp[id].dev, "DRR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, DRR2)); + dev_dbg(mcbsp[id].dev, "DRR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, DRR1)); + dev_dbg(mcbsp[id].dev, "DXR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, DXR2)); + dev_dbg(mcbsp[id].dev, "DXR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, DXR1)); + dev_dbg(mcbsp[id].dev, "SPCR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, SPCR2)); + dev_dbg(mcbsp[id].dev, "SPCR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, SPCR1)); + dev_dbg(mcbsp[id].dev, "RCR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, RCR2)); + dev_dbg(mcbsp[id].dev, "RCR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, RCR1)); + dev_dbg(mcbsp[id].dev, "XCR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, XCR2)); + dev_dbg(mcbsp[id].dev, "XCR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, XCR1)); + dev_dbg(mcbsp[id].dev, "SRGR2: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, SRGR2)); + dev_dbg(mcbsp[id].dev, "SRGR1: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, SRGR1)); + dev_dbg(mcbsp[id].dev, "PCR0: 0x%04x\n", + OMAP_MCBSP_READ(mcbsp[id].io_base, PCR0)); + dev_dbg(mcbsp[id].dev, "***********************\n"); } static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id) { struct omap_mcbsp *mcbsp_tx = dev_id; - DBG("TX IRQ callback : 0x%x\n", - OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2)); + dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n", + OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2)); complete(&mcbsp_tx->tx_irq_completion); @@ -111,8 +82,8 @@ static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id) { struct omap_mcbsp *mcbsp_rx = dev_id; - DBG("RX IRQ callback : 0x%x\n", - OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR2)); + dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n", + OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR2)); complete(&mcbsp_rx->rx_irq_completion); @@ -123,8 +94,8 @@ static void omap_mcbsp_tx_dma_callback(int lch, u16 ch_status, void *data) { struct omap_mcbsp *mcbsp_dma_tx = data; - DBG("TX DMA callback : 0x%x\n", - OMAP_MCBSP_READ(mcbsp_dma_tx->io_base, SPCR2)); + dev_dbg(mcbsp_dma_tx->dev, "TX DMA callback : 0x%x\n", + OMAP_MCBSP_READ(mcbsp_dma_tx->io_base, SPCR2)); /* We can free the channels */ omap_free_dma(mcbsp_dma_tx->dma_tx_lch); @@ -137,8 +108,8 @@ static void omap_mcbsp_rx_dma_callback(int lch, u16 ch_status, void *data) { struct omap_mcbsp *mcbsp_dma_rx = data; - DBG("RX DMA callback : 0x%x\n", - OMAP_MCBSP_READ(mcbsp_dma_rx->io_base, SPCR2)); + dev_dbg(mcbsp_dma_rx->dev, "RX DMA callback : 0x%x\n", + OMAP_MCBSP_READ(mcbsp_dma_rx->io_base, SPCR2)); /* We can free the channels */ omap_free_dma(mcbsp_dma_rx->dma_rx_lch); @@ -155,9 +126,16 @@ static void omap_mcbsp_rx_dma_callback(int lch, u16 ch_status, void *data) */ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config) { - u32 io_base = mcbsp[id].io_base; + u32 io_base; - DBG("OMAP-McBSP: McBSP%d io_base: 0x%8x\n", id + 1, io_base); + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return; + } + + io_base = mcbsp[id].io_base; + dev_dbg(mcbsp[id].dev, "Configuring McBSP%d io_base: 0x%8x\n", + mcbsp[id].id, io_base); /* We write the given config */ OMAP_MCBSP_WRITE(io_base, SPCR2, config->spcr2); @@ -174,97 +152,22 @@ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config) } EXPORT_SYMBOL(omap_mcbsp_config); -static int omap_mcbsp_check(unsigned int id) -{ - if (cpu_is_omap730()) { - if (id > OMAP_MAX_MCBSP_COUNT - 1) { - printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", - id + 1); - return -1; - } - return 0; - } - - if (cpu_is_omap15xx() || cpu_is_omap16xx() || cpu_is_omap24xx()) { - if (id > OMAP_MAX_MCBSP_COUNT) { - printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", - id + 1); - return -1; - } - return 0; - } - - return -1; -} - -#ifdef CONFIG_ARCH_OMAP1 -static void omap_mcbsp_dsp_request(void) -{ - if (cpu_is_omap15xx() || cpu_is_omap16xx()) { - int ret; - - ret = omap_dsp_request_mem(); - if (ret < 0) { - printk(KERN_ERR "Could not get dsp memory: %i\n", ret); - return; - } - - clk_enable(mcbsp_dsp_ck); - clk_enable(mcbsp_api_ck); - - /* enable 12MHz clock to mcbsp 1 & 3 */ - clk_enable(mcbsp_dspxor_ck); - - /* - * DSP external peripheral reset - * FIXME: This should be moved to dsp code - */ - __raw_writew(__raw_readw(DSP_RSTCT2) | 1 | 1 << 1, - DSP_RSTCT2); - } -} - -static void omap_mcbsp_dsp_free(void) -{ - if (cpu_is_omap15xx() || cpu_is_omap16xx()) { - omap_dsp_release_mem(); - clk_disable(mcbsp_dspxor_ck); - clk_disable(mcbsp_dsp_ck); - clk_disable(mcbsp_api_ck); - } -} -#endif - -#ifdef CONFIG_ARCH_OMAP2 -static void omap2_mcbsp2_mux_setup(void) -{ - if (cpu_is_omap2420()) { - omap_cfg_reg(Y15_24XX_MCBSP2_CLKX); - omap_cfg_reg(R14_24XX_MCBSP2_FSX); - omap_cfg_reg(W15_24XX_MCBSP2_DR); - omap_cfg_reg(V15_24XX_MCBSP2_DX); - omap_cfg_reg(V14_24XX_GPIO117); - } - /* - * Need to add MUX settings for OMAP 2430 SDP - */ -} -#endif - /* * We can choose between IRQ based or polled IO. * This needs to be called before omap_mcbsp_request(). */ int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type) { - if (omap_mcbsp_check(id) < 0) - return -EINVAL; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } spin_lock(&mcbsp[id].lock); if (!mcbsp[id].free) { - printk(KERN_ERR "OMAP-McBSP: McBSP%d is currently in use\n", - id + 1); + dev_err(mcbsp[id].dev, "McBSP%d is currently in use\n", + mcbsp[id].id); spin_unlock(&mcbsp[id].lock); return -EINVAL; } @@ -281,34 +184,20 @@ int omap_mcbsp_request(unsigned int id) { int err; - if (omap_mcbsp_check(id) < 0) - return -EINVAL; - -#ifdef CONFIG_ARCH_OMAP1 - /* - * On 1510, 1610 and 1710, McBSP1 and McBSP3 - * are DSP public peripherals. - */ - if (id == OMAP_MCBSP1 || id == OMAP_MCBSP3) - omap_mcbsp_dsp_request(); -#endif - -#ifdef CONFIG_ARCH_OMAP2 - if (cpu_is_omap24xx()) { - if (id == OMAP_MCBSP1) { - clk_enable(mcbsp1_ick); - clk_enable(mcbsp1_fck); - } else { - clk_enable(mcbsp2_ick); - clk_enable(mcbsp2_fck); - } + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; } -#endif + + if (mcbsp[id].pdata->ops->request) + mcbsp[id].pdata->ops->request(id); + + clk_enable(mcbsp[id].clk); spin_lock(&mcbsp[id].lock); if (!mcbsp[id].free) { - printk(KERN_ERR "OMAP-McBSP: McBSP%d is currently in use\n", - id + 1); + dev_err(mcbsp[id].dev, "McBSP%d is currently in use\n", + mcbsp[id].id); spin_unlock(&mcbsp[id].lock); return -1; } @@ -321,9 +210,9 @@ int omap_mcbsp_request(unsigned int id) err = request_irq(mcbsp[id].tx_irq, omap_mcbsp_tx_irq_handler, 0, "McBSP", (void *) (&mcbsp[id])); if (err != 0) { - printk(KERN_ERR "OMAP-McBSP: Unable to " - "request TX IRQ %d for McBSP%d\n", - mcbsp[id].tx_irq, mcbsp[id].id); + dev_err(mcbsp[id].dev, "Unable to request TX IRQ %d " + "for McBSP%d\n", mcbsp[id].tx_irq, + mcbsp[id].id); return err; } @@ -332,9 +221,9 @@ int omap_mcbsp_request(unsigned int id) err = request_irq(mcbsp[id].rx_irq, omap_mcbsp_rx_irq_handler, 0, "McBSP", (void *) (&mcbsp[id])); if (err != 0) { - printk(KERN_ERR "OMAP-McBSP: Unable to " - "request RX IRQ %d for McBSP%d\n", - mcbsp[id].rx_irq, mcbsp[id].id); + dev_err(mcbsp[id].dev, "Unable to request RX IRQ %d " + "for McBSP%d\n", mcbsp[id].rx_irq, + mcbsp[id].id); free_irq(mcbsp[id].tx_irq, (void *) (&mcbsp[id])); return err; } @@ -348,32 +237,20 @@ EXPORT_SYMBOL(omap_mcbsp_request); void omap_mcbsp_free(unsigned int id) { - if (omap_mcbsp_check(id) < 0) + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; - -#ifdef CONFIG_ARCH_OMAP1 - if (cpu_class_is_omap1()) { - if (id == OMAP_MCBSP1 || id == OMAP_MCBSP3) - omap_mcbsp_dsp_free(); } -#endif - -#ifdef CONFIG_ARCH_OMAP2 - if (cpu_is_omap24xx()) { - if (id == OMAP_MCBSP1) { - clk_disable(mcbsp1_ick); - clk_disable(mcbsp1_fck); - } else { - clk_disable(mcbsp2_ick); - clk_disable(mcbsp2_fck); - } - } -#endif + + if (mcbsp[id].pdata->ops->free) + mcbsp[id].pdata->ops->free(id); + + clk_disable(mcbsp[id].clk); spin_lock(&mcbsp[id].lock); if (mcbsp[id].free) { - printk(KERN_ERR "OMAP-McBSP: McBSP%d was not reserved\n", - id + 1); + dev_err(mcbsp[id].dev, "McBSP%d was not reserved\n", + mcbsp[id].id); spin_unlock(&mcbsp[id].lock); return; } @@ -399,8 +276,10 @@ void omap_mcbsp_start(unsigned int id) u32 io_base; u16 w; - if (omap_mcbsp_check(id) < 0) + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; + } io_base = mcbsp[id].io_base; @@ -434,8 +313,10 @@ void omap_mcbsp_stop(unsigned int id) u32 io_base; u16 w; - if (omap_mcbsp_check(id) < 0) + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; + } io_base = mcbsp[id].io_base; @@ -456,7 +337,14 @@ EXPORT_SYMBOL(omap_mcbsp_stop); /* polled mcbsp i/o operations */ int omap_mcbsp_pollwrite(unsigned int id, u16 buf) { - u32 base = mcbsp[id].io_base; + u32 base; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + + base = mcbsp[id].io_base; writew(buf, base + OMAP_MCBSP_REG_DXR1); /* if frame sync error - clear the error */ if (readw(base + OMAP_MCBSP_REG_SPCR2) & XSYNC_ERR) { @@ -478,8 +366,8 @@ int omap_mcbsp_pollwrite(unsigned int id, u16 buf) (XRST), base + OMAP_MCBSP_REG_SPCR2); udelay(10); - printk(KERN_ERR - " Could not write to McBSP Register\n"); + dev_err(mcbsp[id].dev, "Could not write to" + " McBSP%d Register\n", mcbsp[id].id); return -2; } } @@ -491,7 +379,14 @@ EXPORT_SYMBOL(omap_mcbsp_pollwrite); int omap_mcbsp_pollread(unsigned int id, u16 *buf) { - u32 base = mcbsp[id].io_base; + u32 base; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + + base = mcbsp[id].io_base; /* if frame sync error - clear the error */ if (readw(base + OMAP_MCBSP_REG_SPCR1) & RSYNC_ERR) { /* clear error */ @@ -512,8 +407,8 @@ int omap_mcbsp_pollread(unsigned int id, u16 *buf) (RRST), base + OMAP_MCBSP_REG_SPCR1); udelay(10); - printk(KERN_ERR - " Could not read from McBSP Register\n"); + dev_err(mcbsp[id].dev, "Could not read from" + " McBSP%d Register\n", mcbsp[id].id); return -2; } } @@ -530,12 +425,15 @@ EXPORT_SYMBOL(omap_mcbsp_pollread); void omap_mcbsp_xmit_word(unsigned int id, u32 word) { u32 io_base; - omap_mcbsp_word_length word_length = mcbsp[id].tx_word_length; + omap_mcbsp_word_length word_length; - if (omap_mcbsp_check(id) < 0) + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; + } io_base = mcbsp[id].io_base; + word_length = mcbsp[id].tx_word_length; wait_for_completion(&(mcbsp[id].tx_irq_completion)); @@ -549,11 +447,14 @@ u32 omap_mcbsp_recv_word(unsigned int id) { u32 io_base; u16 word_lsb, word_msb = 0; - omap_mcbsp_word_length word_length = mcbsp[id].rx_word_length; + omap_mcbsp_word_length word_length; - if (omap_mcbsp_check(id) < 0) - return -EINVAL; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + word_length = mcbsp[id].rx_word_length; io_base = mcbsp[id].io_base; wait_for_completion(&(mcbsp[id].rx_irq_completion)); @@ -568,11 +469,20 @@ EXPORT_SYMBOL(omap_mcbsp_recv_word); int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word) { - u32 io_base = mcbsp[id].io_base; - omap_mcbsp_word_length tx_word_length = mcbsp[id].tx_word_length; - omap_mcbsp_word_length rx_word_length = mcbsp[id].rx_word_length; + u32 io_base; + omap_mcbsp_word_length tx_word_length; + omap_mcbsp_word_length rx_word_length; u16 spcr2, spcr1, attempts = 0, word_lsb, word_msb = 0; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + + io_base = mcbsp[id].io_base; + tx_word_length = mcbsp[id].tx_word_length; + rx_word_length = mcbsp[id].rx_word_length; + if (tx_word_length != rx_word_length) return -EINVAL; @@ -586,7 +496,8 @@ int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word) udelay(10); OMAP_MCBSP_WRITE(io_base, SPCR2, spcr2 | XRST); udelay(10); - printk(KERN_ERR "McBSP transmitter not ready\n"); + dev_err(mcbsp[id].dev, "McBSP%d transmitter not " + "ready\n", mcbsp[id].id); return -EAGAIN; } } @@ -606,7 +517,8 @@ int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word) udelay(10); OMAP_MCBSP_WRITE(io_base, SPCR1, spcr1 | RRST); udelay(10); - printk(KERN_ERR "McBSP receiver not ready\n"); + dev_err(mcbsp[id].dev, "McBSP%d receiver not " + "ready\n", mcbsp[id].id); return -EAGAIN; } } @@ -622,11 +534,20 @@ EXPORT_SYMBOL(omap_mcbsp_spi_master_xmit_word_poll); int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word) { - u32 io_base = mcbsp[id].io_base, clock_word = 0; - omap_mcbsp_word_length tx_word_length = mcbsp[id].tx_word_length; - omap_mcbsp_word_length rx_word_length = mcbsp[id].rx_word_length; + u32 io_base, clock_word = 0; + omap_mcbsp_word_length tx_word_length; + omap_mcbsp_word_length rx_word_length; u16 spcr2, spcr1, attempts = 0, word_lsb, word_msb = 0; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + + io_base = mcbsp[id].io_base; + tx_word_length = mcbsp[id].tx_word_length; + rx_word_length = mcbsp[id].rx_word_length; + if (tx_word_length != rx_word_length) return -EINVAL; @@ -640,7 +561,8 @@ int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word) udelay(10); OMAP_MCBSP_WRITE(io_base, SPCR2, spcr2 | XRST); udelay(10); - printk(KERN_ERR "McBSP transmitter not ready\n"); + dev_err(mcbsp[id].dev, "McBSP%d transmitter not " + "ready\n", mcbsp[id].id); return -EAGAIN; } } @@ -660,7 +582,8 @@ int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word) udelay(10); OMAP_MCBSP_WRITE(io_base, SPCR1, spcr1 | RRST); udelay(10); - printk(KERN_ERR "McBSP receiver not ready\n"); + dev_err(mcbsp[id].dev, "McBSP%d receiver not " + "ready\n", mcbsp[id].id); return -EAGAIN; } } @@ -691,20 +614,24 @@ int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, int dest_port = 0; int sync_dev = 0; - if (omap_mcbsp_check(id) < 0) - return -EINVAL; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } if (omap_request_dma(mcbsp[id].dma_tx_sync, "McBSP TX", omap_mcbsp_tx_dma_callback, &mcbsp[id], &dma_tx_ch)) { - printk(KERN_ERR "OMAP-McBSP: Unable to request DMA channel for" - " McBSP%d TX. Trying IRQ based TX\n", id + 1); + dev_err(mcbsp[id].dev, " Unable to request DMA channel for " + "McBSP%d TX. Trying IRQ based TX\n", + mcbsp[id].id); return -EAGAIN; } mcbsp[id].dma_tx_lch = dma_tx_ch; - DBG("TX DMA on channel %d\n", dma_tx_ch); + dev_err(mcbsp[id].dev, "McBSP%d TX DMA on channel %d\n", mcbsp[id].id, + dma_tx_ch); init_completion(&(mcbsp[id].tx_dma_completion)); @@ -712,7 +639,7 @@ int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, src_port = OMAP_DMA_PORT_TIPB; dest_port = OMAP_DMA_PORT_EMIFF; } - if (cpu_is_omap24xx()) + if (cpu_class_is_omap2()) sync_dev = mcbsp[id].dma_tx_sync; omap_set_dma_transfer_params(mcbsp[id].dma_tx_lch, @@ -748,20 +675,24 @@ int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, int dest_port = 0; int sync_dev = 0; - if (omap_mcbsp_check(id) < 0) - return -EINVAL; + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } if (omap_request_dma(mcbsp[id].dma_rx_sync, "McBSP RX", omap_mcbsp_rx_dma_callback, &mcbsp[id], &dma_rx_ch)) { - printk(KERN_ERR "Unable to request DMA channel for McBSP%d RX." - " Trying IRQ based RX\n", id + 1); + dev_err(mcbsp[id].dev, "Unable to request DMA channel for " + "McBSP%d RX. Trying IRQ based RX\n", + mcbsp[id].id); return -EAGAIN; } mcbsp[id].dma_rx_lch = dma_rx_ch; - DBG("RX DMA on channel %d\n", dma_rx_ch); + dev_err(mcbsp[id].dev, "McBSP%d RX DMA on channel %d\n", mcbsp[id].id, + dma_rx_ch); init_completion(&(mcbsp[id].rx_dma_completion)); @@ -769,7 +700,7 @@ int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, src_port = OMAP_DMA_PORT_TIPB; dest_port = OMAP_DMA_PORT_EMIFF; } - if (cpu_is_omap24xx()) + if (cpu_class_is_omap2()) sync_dev = mcbsp[id].dma_rx_sync; omap_set_dma_transfer_params(mcbsp[id].dma_rx_lch, @@ -808,8 +739,10 @@ void omap_mcbsp_set_spi_mode(unsigned int id, { struct omap_mcbsp_reg_cfg mcbsp_cfg; - if (omap_mcbsp_check(id) < 0) + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; + } memset(&mcbsp_cfg, 0, sizeof(struct omap_mcbsp_reg_cfg)); @@ -870,182 +803,93 @@ EXPORT_SYMBOL(omap_mcbsp_set_spi_mode); * McBSP1 and McBSP3 are directly mapped on 1610 and 1510. * 730 has only 2 McBSP, and both of them are MPU peripherals. */ -struct omap_mcbsp_info { - u32 virt_base; - u8 dma_rx_sync, dma_tx_sync; - u16 rx_irq, tx_irq; -}; +static int __init omap_mcbsp_probe(struct platform_device *pdev) +{ + struct omap_mcbsp_platform_data *pdata = pdev->dev.platform_data; + int id = pdev->id - 1; + int ret = 0; -#ifdef CONFIG_ARCH_OMAP730 -static const struct omap_mcbsp_info mcbsp_730[] = { - [0] = { .virt_base = io_p2v(OMAP730_MCBSP1_BASE), - .dma_rx_sync = OMAP_DMA_MCBSP1_RX, - .dma_tx_sync = OMAP_DMA_MCBSP1_TX, - .rx_irq = INT_730_McBSP1RX, - .tx_irq = INT_730_McBSP1TX }, - [1] = { .virt_base = io_p2v(OMAP730_MCBSP2_BASE), - .dma_rx_sync = OMAP_DMA_MCBSP3_RX, - .dma_tx_sync = OMAP_DMA_MCBSP3_TX, - .rx_irq = INT_730_McBSP2RX, - .tx_irq = INT_730_McBSP2TX }, -}; -#endif - -#ifdef CONFIG_ARCH_OMAP15XX -static const struct omap_mcbsp_info mcbsp_1510[] = { - [0] = { .virt_base = OMAP1510_MCBSP1_BASE, - .dma_rx_sync = OMAP_DMA_MCBSP1_RX, - .dma_tx_sync = OMAP_DMA_MCBSP1_TX, - .rx_irq = INT_McBSP1RX, - .tx_irq = INT_McBSP1TX }, - [1] = { .virt_base = io_p2v(OMAP1510_MCBSP2_BASE), - .dma_rx_sync = OMAP_DMA_MCBSP2_RX, - .dma_tx_sync = OMAP_DMA_MCBSP2_TX, - .rx_irq = INT_1510_SPI_RX, - .tx_irq = INT_1510_SPI_TX }, - [2] = { .virt_base = OMAP1510_MCBSP3_BASE, - .dma_rx_sync = OMAP_DMA_MCBSP3_RX, - .dma_tx_sync = OMAP_DMA_MCBSP3_TX, - .rx_irq = INT_McBSP3RX, - .tx_irq = INT_McBSP3TX }, -}; -#endif - -#if defined(CONFIG_ARCH_OMAP16XX) -static const struct omap_mcbsp_info mcbsp_1610[] = { - [0] = { .virt_base = OMAP1610_MCBSP1_BASE, - .dma_rx_sync = OMAP_DMA_MCBSP1_RX, - .dma_tx_sync = OMAP_DMA_MCBSP1_TX, - .rx_irq = INT_McBSP1RX, - .tx_irq = INT_McBSP1TX }, - [1] = { .virt_base = io_p2v(OMAP1610_MCBSP2_BASE), - .dma_rx_sync = OMAP_DMA_MCBSP2_RX, - .dma_tx_sync = OMAP_DMA_MCBSP2_TX, - .rx_irq = INT_1610_McBSP2_RX, - .tx_irq = INT_1610_McBSP2_TX }, - [2] = { .virt_base = OMAP1610_MCBSP3_BASE, - .dma_rx_sync = OMAP_DMA_MCBSP3_RX, - .dma_tx_sync = OMAP_DMA_MCBSP3_TX, - .rx_irq = INT_McBSP3RX, - .tx_irq = INT_McBSP3TX }, -}; -#endif - -#if defined(CONFIG_ARCH_OMAP24XX) -static const struct omap_mcbsp_info mcbsp_24xx[] = { - [0] = { .virt_base = IO_ADDRESS(OMAP24XX_MCBSP1_BASE), - .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX, - .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX, - .rx_irq = INT_24XX_MCBSP1_IRQ_RX, - .tx_irq = INT_24XX_MCBSP1_IRQ_TX, - }, - [1] = { .virt_base = IO_ADDRESS(OMAP24XX_MCBSP2_BASE), - .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX, - .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX, - .rx_irq = INT_24XX_MCBSP2_IRQ_RX, - .tx_irq = INT_24XX_MCBSP2_IRQ_TX, - }, -}; -#endif + if (!pdata) { + dev_err(&pdev->dev, "McBSP device initialized without" + "platform data\n"); + ret = -EINVAL; + goto exit; + } + + dev_dbg(&pdev->dev, "Initializing OMAP McBSP (%d).\n", pdev->id); + + if (id >= OMAP_MAX_MCBSP_COUNT) { + dev_err(&pdev->dev, "Invalid McBSP device id (%d)\n", id); + ret = -EINVAL; + goto exit; + } + + spin_lock_init(&mcbsp[id].lock); + mcbsp[id].id = id + 1; + mcbsp[id].free = 1; + mcbsp[id].dma_tx_lch = -1; + mcbsp[id].dma_rx_lch = -1; + + mcbsp[id].io_base = pdata->virt_base; + /* Default I/O is IRQ based */ + mcbsp[id].io_type = OMAP_MCBSP_IRQ_IO; + mcbsp[id].tx_irq = pdata->tx_irq; + mcbsp[id].rx_irq = pdata->rx_irq; + mcbsp[id].dma_rx_sync = pdata->dma_rx_sync; + mcbsp[id].dma_tx_sync = pdata->dma_tx_sync; + + if (pdata->clk_name) + mcbsp[id].clk = clk_get(&pdev->dev, pdata->clk_name); + if (IS_ERR(mcbsp[id].clk)) { + mcbsp[id].free = 0; + dev_err(&pdev->dev, + "Invalid clock configuration for McBSP%d.\n", + mcbsp[id].id); + ret = -EINVAL; + goto exit; + } + + mcbsp[id].pdata = pdata; + mcbsp[id].dev = &pdev->dev; + platform_set_drvdata(pdev, &mcbsp[id]); + +exit: + return ret; +} -static int __init omap_mcbsp_init(void) +static int omap_mcbsp_remove(struct platform_device *pdev) { - int mcbsp_count = 0, i; - static const struct omap_mcbsp_info *mcbsp_info; + struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev); - printk(KERN_INFO "Initializing OMAP McBSP system\n"); + platform_set_drvdata(pdev, NULL); + if (mcbsp) { -#ifdef CONFIG_ARCH_OMAP1 - mcbsp_dsp_ck = clk_get(0, "dsp_ck"); - if (IS_ERR(mcbsp_dsp_ck)) { - printk(KERN_ERR "mcbsp: could not acquire dsp_ck handle.\n"); - return PTR_ERR(mcbsp_dsp_ck); - } - mcbsp_api_ck = clk_get(0, "api_ck"); - if (IS_ERR(mcbsp_api_ck)) { - printk(KERN_ERR "mcbsp: could not acquire api_ck handle.\n"); - return PTR_ERR(mcbsp_api_ck); - } - mcbsp_dspxor_ck = clk_get(0, "dspxor_ck"); - if (IS_ERR(mcbsp_dspxor_ck)) { - printk(KERN_ERR "mcbsp: could not acquire dspxor_ck handle.\n"); - return PTR_ERR(mcbsp_dspxor_ck); - } -#endif -#ifdef CONFIG_ARCH_OMAP2 - mcbsp1_ick = clk_get(0, "mcbsp1_ick"); - if (IS_ERR(mcbsp1_ick)) { - printk(KERN_ERR "mcbsp: could not acquire " - "mcbsp1_ick handle.\n"); - return PTR_ERR(mcbsp1_ick); - } - mcbsp1_fck = clk_get(0, "mcbsp1_fck"); - if (IS_ERR(mcbsp1_fck)) { - printk(KERN_ERR "mcbsp: could not acquire " - "mcbsp1_fck handle.\n"); - return PTR_ERR(mcbsp1_fck); - } - mcbsp2_ick = clk_get(0, "mcbsp2_ick"); - if (IS_ERR(mcbsp2_ick)) { - printk(KERN_ERR "mcbsp: could not acquire " - "mcbsp2_ick handle.\n"); - return PTR_ERR(mcbsp2_ick); - } - mcbsp2_fck = clk_get(0, "mcbsp2_fck"); - if (IS_ERR(mcbsp2_fck)) { - printk(KERN_ERR "mcbsp: could not acquire " - "mcbsp2_fck handle.\n"); - return PTR_ERR(mcbsp2_fck); - } -#endif + if (mcbsp->pdata && mcbsp->pdata->ops && + mcbsp->pdata->ops->free) + mcbsp->pdata->ops->free(mcbsp->id); -#ifdef CONFIG_ARCH_OMAP730 - if (cpu_is_omap730()) { - mcbsp_info = mcbsp_730; - mcbsp_count = ARRAY_SIZE(mcbsp_730); - } -#endif -#ifdef CONFIG_ARCH_OMAP15XX - if (cpu_is_omap15xx()) { - mcbsp_info = mcbsp_1510; - mcbsp_count = ARRAY_SIZE(mcbsp_1510); - } -#endif -#if defined(CONFIG_ARCH_OMAP16XX) - if (cpu_is_omap16xx()) { - mcbsp_info = mcbsp_1610; - mcbsp_count = ARRAY_SIZE(mcbsp_1610); - } -#endif -#if defined(CONFIG_ARCH_OMAP24XX) - if (cpu_is_omap24xx()) { - mcbsp_info = mcbsp_24xx; - mcbsp_count = ARRAY_SIZE(mcbsp_24xx); - omap2_mcbsp2_mux_setup(); - } -#endif - for (i = 0; i < OMAP_MAX_MCBSP_COUNT ; i++) { - if (i >= mcbsp_count) { - mcbsp[i].io_base = 0; - mcbsp[i].free = 0; - continue; - } - mcbsp[i].id = i + 1; - mcbsp[i].free = 1; - mcbsp[i].dma_tx_lch = -1; - mcbsp[i].dma_rx_lch = -1; - - mcbsp[i].io_base = mcbsp_info[i].virt_base; - /* Default I/O is IRQ based */ - mcbsp[i].io_type = OMAP_MCBSP_IRQ_IO; - mcbsp[i].tx_irq = mcbsp_info[i].tx_irq; - mcbsp[i].rx_irq = mcbsp_info[i].rx_irq; - mcbsp[i].dma_rx_sync = mcbsp_info[i].dma_rx_sync; - mcbsp[i].dma_tx_sync = mcbsp_info[i].dma_tx_sync; - spin_lock_init(&mcbsp[i].lock); + clk_disable(mcbsp->clk); + clk_put(mcbsp->clk); + + mcbsp->clk = NULL; + mcbsp->free = 0; + mcbsp->dev = NULL; } return 0; } -arch_initcall(omap_mcbsp_init); +static struct platform_driver omap_mcbsp_driver = { + .probe = omap_mcbsp_probe, + .remove = omap_mcbsp_remove, + .driver = { + .name = "omap-mcbsp", + }, +}; + +int __init omap_mcbsp_init(void) +{ + /* Register the McBSP driver */ + return platform_driver_register(&omap_mcbsp_driver); +} + diff --git a/include/asm-arm/arch-omap/mcbsp.h b/include/asm-arm/arch-omap/mcbsp.h index c7a0cc1..26c78f6 100644 --- a/include/asm-arm/arch-omap/mcbsp.h +++ b/include/asm-arm/arch-omap/mcbsp.h @@ -24,7 +24,11 @@ #ifndef __ASM_ARCH_OMAP_MCBSP_H #define __ASM_ARCH_OMAP_MCBSP_H +#include <linux/completion.h> +#include <linux/spinlock.h> + #include <asm/hardware.h> +#include <asm/arch/clock.h> #define OMAP730_MCBSP1_BASE 0xfffb1000 #define OMAP730_MCBSP2_BASE 0xfffb1800 @@ -40,6 +44,9 @@ #define OMAP24XX_MCBSP1_BASE 0x48074000 #define OMAP24XX_MCBSP2_BASE 0x48076000 +#define OMAP34XX_MCBSP1_BASE 0x48074000 +#define OMAP34XX_MCBSP2_BASE 0x49022000 + #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP730) #define OMAP_MCBSP_REG_DRR2 0x00 @@ -74,7 +81,8 @@ #define OMAP_MCBSP_REG_XCERG 0x3A #define OMAP_MCBSP_REG_XCERH 0x3C -#define OMAP_MAX_MCBSP_COUNT 3 +#define OMAP_MAX_MCBSP_COUNT 3 +#define MAX_MCBSP_CLOCKS 3 #define AUDIO_MCBSP_DATAWRITE (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1) #define AUDIO_MCBSP_DATAREAD (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1) @@ -117,7 +125,8 @@ #define OMAP_MCBSP_REG_XCERG 0x74 #define OMAP_MCBSP_REG_XCERH 0x78 -#define OMAP_MAX_MCBSP_COUNT 2 +#define OMAP_MAX_MCBSP_COUNT 2 +#define MAX_MCBSP_CLOCKS 2 #define AUDIO_MCBSP_DATAWRITE (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1) #define AUDIO_MCBSP_DATAREAD (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1) @@ -298,6 +307,55 @@ struct omap_mcbsp_spi_cfg { omap_mcbsp_word_length word_length; }; +/* Platform specific configuration */ +struct omap_mcbsp_ops { + void (*request)(unsigned int); + void (*free)(unsigned int); + int (*check)(unsigned int); +}; + +struct omap_mcbsp_platform_data { + u32 virt_base; + u8 dma_rx_sync, dma_tx_sync; + u16 rx_irq, tx_irq; + struct omap_mcbsp_ops *ops; + char const *clk_name; +}; + +struct omap_mcbsp { + struct device *dev; + u32 io_base; + u8 id; + u8 free; + omap_mcbsp_word_length rx_word_length; + omap_mcbsp_word_length tx_word_length; + + omap_mcbsp_io_type_t io_type; /* IRQ or poll */ + /* IRQ based TX/RX */ + int rx_irq; + int tx_irq; + + /* DMA stuff */ + u8 dma_rx_sync; + short dma_rx_lch; + u8 dma_tx_sync; + short dma_tx_lch; + + /* Completion queues */ + struct completion tx_irq_completion; + struct completion rx_irq_completion; + struct completion tx_dma_completion; + struct completion rx_dma_completion; + + /* Protect the field .free, while checking if the mcbsp is in use */ + spinlock_t lock; + struct omap_mcbsp_platform_data *pdata; + struct clk *clk; +}; + +int omap_mcbsp_init(void); +void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, + int size); void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config); int omap_mcbsp_request(unsigned int id); void omap_mcbsp_free(unsigned int id); |