From cf4c87abe238ec17cd0255b4e21abd949d7f811e Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Fri, 8 Oct 2010 11:40:19 -0600 Subject: OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c The OMAP ASoC McBSP code implemented CLKR and FSR signal muxing via direct System Control Module writes on OMAP2+. This required the omap_ctrl_{read,write}l() functions to be exported, which is against policy: the only code that should call those functions directly is OMAP core code, not device drivers. omap_ctrl_{read,write}*() are no longer exported, so the driver no longer builds as a module. Fix the pinmuxing part of the problem by removing calls to omap_ctrl_{read,write}l() from the OMAP ASoC McBSP code and implementing signal muxing functions in arch/arm/mach-omap2/mcbsp.c. Due to the unfortunate way that McBSP support is implemented in ASoC and the OMAP tree, these symbols must be exported for use by sound/soc/omap/omap-mcbsp.c. Going forward, the McBSP device driver should be moved from arch/arm/*omap* into drivers/ or sound/soc/*, and the CPU DAI driver should be implemented as a platform_driver as many other ASoC CPU DAI drivers are. These two steps should resolve many of the layering problems, which will rapidly reappear during a McBSP hwmod/PM runtime conversion. Signed-off-by: Paul Walmsley Acked-by: Jarkko Nikula Acked-by: Peter Ujfalusi Acked-by: Liam Girdwood Acked-by: Mark Brown --- sound/soc/omap/omap-mcbsp.c | 52 +++++++++++++++------------------------------ 1 file changed, 17 insertions(+), 35 deletions(-) (limited to 'sound') diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 86f213905e2c..f50a5abb470f 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -661,48 +661,23 @@ static int omap_mcbsp_dai_set_clks_src(struct omap_mcbsp_data *mcbsp_data, return 0; } -static int omap_mcbsp_dai_set_rcvr_src(struct omap_mcbsp_data *mcbsp_data, - int clk_id) -{ - int sel_bit, set = 0; - u16 reg = OMAP2_CONTROL_DEVCONF0; - - if (cpu_class_is_omap1()) - return -EINVAL; /* TODO: Can this be implemented for OMAP1? */ - if (mcbsp_data->bus_id != 0) - return -EINVAL; - - switch (clk_id) { - case OMAP_MCBSP_CLKR_SRC_CLKX: - set = 1; - case OMAP_MCBSP_CLKR_SRC_CLKR: - sel_bit = 3; - break; - case OMAP_MCBSP_FSR_SRC_FSX: - set = 1; - case OMAP_MCBSP_FSR_SRC_FSR: - sel_bit = 4; - break; - default: - return -EINVAL; - } - - if (set) - omap_ctrl_writel(omap_ctrl_readl(reg) | (1 << sel_bit), reg); - else - omap_ctrl_writel(omap_ctrl_readl(reg) & ~(1 << sel_bit), reg); - - return 0; -} - static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, int clk_id, unsigned int freq, int dir) { struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; + struct omap_mcbsp_platform_data *pdata = cpu_dai->dev->platform_data; int err = 0; + /* The McBSP signal muxing functions are only available on McBSP1 */ + if (clk_id == OMAP_MCBSP_CLKR_SRC_CLKR || + clk_id == OMAP_MCBSP_CLKR_SRC_CLKX || + clk_id == OMAP_MCBSP_FSR_SRC_FSR || + clk_id == OMAP_MCBSP_FSR_SRC_FSX) + if (cpu_class_is_omap1() || mcbsp_data->bus_id != 0) + return -EINVAL; + mcbsp_data->in_freq = freq; switch (clk_id) { @@ -720,11 +695,18 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, regs->pcr0 |= SCLKME; break; + case OMAP_MCBSP_CLKR_SRC_CLKR: + omap2_mcbsp1_mux_clkr_src(CLKR_SRC_CLKR); + break; case OMAP_MCBSP_CLKR_SRC_CLKX: + omap2_mcbsp1_mux_clkr_src(CLKR_SRC_CLKX); + break; case OMAP_MCBSP_FSR_SRC_FSR: + omap2_mcbsp1_mux_fsr_src(FSR_SRC_FSR); + break; case OMAP_MCBSP_FSR_SRC_FSX: - err = omap_mcbsp_dai_set_rcvr_src(mcbsp_data, clk_id); + omap2_mcbsp1_mux_fsr_src(FSR_SRC_FSX); break; default: err = -ENODEV; -- cgit v1.2.3 From d13586574d373ef40acd4725c9a269daa355e412 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Fri, 8 Oct 2010 11:40:19 -0600 Subject: OMAP: McBSP: implement functional clock switching via clock framework Previously the OMAP McBSP ASoC driver implemented CLKS switching by using omap_ctrl_{read,write}l() directly. This is against policy; the OMAP System Control Module functions are not intended to be exported to drivers. These symbols are no longer exported, so as a result, the OMAP McBSP ASoC driver does not build as a module. Resolve the CLKS clock changing portion of this problem by creating a clock parent changing function that lives in arch/arm/mach-omap2/mcbsp.c, and modify the ASoC driver to use it. Due to the unfortunate way that McBSP support is implemented in ASoC and the OMAP tree, this symbol must be exported for use by sound/soc/omap/omap-mcbsp.c. Going forward, the McBSP device driver should be moved from arch/arm/*omap* into drivers/ or sound/soc/* and the CPU DAI driver should be implemented as a platform_driver as many other ASoC CPU DAI drivers are. These two steps should resolve many of the layering problems, which will rapidly reappear during a McBSP hwmod/PM runtime conversions. Signed-off-by: Paul Walmsley Acked-by: Jarkko Nikula Acked-by: Peter Ujfalusi Acked-by: Liam Girdwood Acked-by: Mark Brown --- arch/arm/mach-omap2/mcbsp.c | 51 ++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/mcbsp.h | 11 ++++++ arch/arm/plat-omap/mcbsp.c | 3 -- sound/soc/omap/omap-mcbsp.c | 69 +++++++-------------------------- 4 files changed, 75 insertions(+), 59 deletions(-) (limited to 'sound') diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index 4c9c999dfa4a..51abcedfde83 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -52,6 +52,54 @@ void omap2_mcbsp1_mux_fsr_src(u8 mux) } EXPORT_SYMBOL(omap2_mcbsp1_mux_fsr_src); +/* McBSP CLKS source switching function */ + +int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id) +{ + struct omap_mcbsp *mcbsp; + struct clk *fck_src; + char *fck_src_name; + int r; + + if (!omap_mcbsp_check_valid_id(id)) { + pr_err("%s: Invalid id (%d)\n", __func__, id + 1); + return -EINVAL; + } + mcbsp = id_to_mcbsp_ptr(id); + + if (fck_src_id == MCBSP_CLKS_PAD_SRC) + fck_src_name = "pad_fck"; + else if (fck_src_id == MCBSP_CLKS_PRCM_SRC) + fck_src_name = "prcm_fck"; + else + return -EINVAL; + + fck_src = clk_get(mcbsp->dev, fck_src_name); + if (IS_ERR_OR_NULL(fck_src)) { + pr_err("omap-mcbsp: %s: could not clk_get() %s\n", "clks", + fck_src_name); + return -EINVAL; + } + + clk_disable(mcbsp->fclk); + + r = clk_set_parent(mcbsp->fclk, fck_src); + if (IS_ERR_VALUE(r)) { + pr_err("omap-mcbsp: %s: could not clk_set_parent() to %s\n", + "clks", fck_src_name); + clk_put(fck_src); + return -EINVAL; + } + + clk_enable(mcbsp->fclk); + + clk_put(fck_src); + + return 0; +} +EXPORT_SYMBOL(omap2_mcbsp_set_clks_src); + + /* Platform data */ #ifdef CONFIG_ARCH_OMAP2420 @@ -190,18 +238,21 @@ static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = { .dma_rx_sync = OMAP44XX_DMA_MCBSP2_RX, .dma_tx_sync = OMAP44XX_DMA_MCBSP2_TX, .tx_irq = OMAP44XX_IRQ_MCBSP2, + /* XXX .ops ? */ }, { .phys_base = OMAP44XX_MCBSP3_BASE, .dma_rx_sync = OMAP44XX_DMA_MCBSP3_RX, .dma_tx_sync = OMAP44XX_DMA_MCBSP3_TX, .tx_irq = OMAP44XX_IRQ_MCBSP3, + /* XXX .ops ? */ }, { .phys_base = OMAP44XX_MCBSP4_BASE, .dma_rx_sync = OMAP44XX_DMA_MCBSP4_RX, .dma_tx_sync = OMAP44XX_DMA_MCBSP4_TX, .tx_irq = OMAP44XX_IRQ_MCBSP4, + /* XXX .ops ? */ }, }; #define OMAP44XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap44xx_mcbsp_pdata) diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index 886d0e610aa7..4da6f94ae8e8 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -320,6 +320,10 @@ #define FSR_SRC_FSR 0 #define FSR_SRC_FSX 1 +/* McBSP functional clock sources */ +#define MCBSP_CLKS_PAD_SRC 0 +#define MCBSP_CLKS_PRCM_SRC 1 + /* we don't do multichannel for now */ struct omap_mcbsp_reg_cfg { u16 spcr2; @@ -406,6 +410,7 @@ struct omap_mcbsp_spi_cfg { struct omap_mcbsp_ops { void (*request)(unsigned int); void (*free)(unsigned int); + int (*set_clks_src)(u8, u8); }; struct omap_mcbsp_platform_data { @@ -472,6 +477,9 @@ struct omap_mcbsp { extern struct omap_mcbsp **mcbsp_ptr; extern int omap_mcbsp_count, omap_mcbsp_cache_size; +#define omap_mcbsp_check_valid_id(id) (id < omap_mcbsp_count) +#define id_to_mcbsp_ptr(id) mcbsp_ptr[id]; + int omap_mcbsp_init(void); void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, int size); @@ -509,6 +517,9 @@ int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, unsigned int leng int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word); int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 * word); + +/* McBSP functional clock source changing function */ +extern int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id); /* SPI specific API */ void omap_mcbsp_set_spi_mode(unsigned int id, const struct omap_mcbsp_spi_cfg * spi_cfg); diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index 9836fb5dc013..09f8c2871334 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -81,9 +81,6 @@ static int omap_mcbsp_st_read(struct omap_mcbsp *mcbsp, u16 reg) #define MCBSP_READ_CACHE(mcbsp, reg) \ omap_mcbsp_read(mcbsp, OMAP_MCBSP_REG_##reg, 1) -#define omap_mcbsp_check_valid_id(id) (id < omap_mcbsp_count) -#define id_to_mcbsp_ptr(id) mcbsp_ptr[id]; - #define MCBSP_ST_READ(mcbsp, reg) \ omap_mcbsp_st_read(mcbsp, OMAP_ST_REG_##reg) #define MCBSP_ST_WRITE(mcbsp, reg, val) \ diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index f50a5abb470f..b59ad11466a9 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -31,7 +31,6 @@ #include #include -#include #include #include #include "omap-mcbsp.h" @@ -608,66 +607,12 @@ static int omap_mcbsp_dai_set_clkdiv(struct snd_soc_dai *cpu_dai, return 0; } -static int omap_mcbsp_dai_set_clks_src(struct omap_mcbsp_data *mcbsp_data, - int clk_id) -{ - int sel_bit; - u16 reg, reg_devconf1 = OMAP243X_CONTROL_DEVCONF1; - - if (cpu_class_is_omap1()) { - /* OMAP1's can use only external source clock */ - if (unlikely(clk_id == OMAP_MCBSP_SYSCLK_CLKS_FCLK)) - return -EINVAL; - else - return 0; - } - - if (cpu_is_omap2420() && mcbsp_data->bus_id > 1) - return -EINVAL; - - if (cpu_is_omap343x()) - reg_devconf1 = OMAP343X_CONTROL_DEVCONF1; - - switch (mcbsp_data->bus_id) { - case 0: - reg = OMAP2_CONTROL_DEVCONF0; - sel_bit = 2; - break; - case 1: - reg = OMAP2_CONTROL_DEVCONF0; - sel_bit = 6; - break; - case 2: - reg = reg_devconf1; - sel_bit = 0; - break; - case 3: - reg = reg_devconf1; - sel_bit = 2; - break; - case 4: - reg = reg_devconf1; - sel_bit = 4; - break; - default: - return -EINVAL; - } - - if (clk_id == OMAP_MCBSP_SYSCLK_CLKS_FCLK) - omap_ctrl_writel(omap_ctrl_readl(reg) & ~(1 << sel_bit), reg); - else - omap_ctrl_writel(omap_ctrl_readl(reg) | (1 << sel_bit), reg); - - return 0; -} - static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, int clk_id, unsigned int freq, int dir) { struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; - struct omap_mcbsp_platform_data *pdata = cpu_dai->dev->platform_data; int err = 0; /* The McBSP signal muxing functions are only available on McBSP1 */ @@ -685,8 +630,20 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, regs->srgr2 |= CLKSM; break; case OMAP_MCBSP_SYSCLK_CLKS_FCLK: + if (cpu_class_is_omap1()) { + err = -EINVAL; + break; + } + err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id, + MCBSP_CLKS_PRCM_SRC); + break; case OMAP_MCBSP_SYSCLK_CLKS_EXT: - err = omap_mcbsp_dai_set_clks_src(mcbsp_data, clk_id); + if (cpu_class_is_omap1()) { + err = 0; + break; + } + err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id, + MCBSP_CLKS_PAD_SRC); break; case OMAP_MCBSP_SYSCLK_CLKX_EXT: -- cgit v1.2.3 From 4de43a6b4cf002e343cf39fa27a3f46c5dc19411 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Tue, 12 Oct 2010 13:27:58 +0000 Subject: ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h Commit 346a5c890 (OMAP: control: move plat-omap/control.h to mach-omap2/control.h) in the linux-omap tree removed plat/control.h and most of its callers. This one slipped through - breaking the build as below when CONFIG_SND_OMAP_SOC_MCPDM is defined. Fix this. CC sound/soc/omap/omap-mcpdm.o sound/soc/omap/omap-mcpdm.c:35: fatal error: plat/control.h: No such file or directory compilation terminated. make[3]: *** [sound/soc/omap/omap-mcpdm.o] Error 1 make[2]: *** [sound/soc/omap] Error 2 make[1]: *** [sound/soc] Error 2 make: *** [sound] Error 2 Signed-off-by: Anand Gadiyar Cc: Misael Lopez Cruz Cc: Liam Girdwood Cc: Mark Brown Cc: Paul Walmsley Acked-by: Mark Brown Acked-by: Jarkko Nikula Acked-by: Paul Walmsley Signed-off-by: Tony Lindgren --- sound/soc/omap/omap-mcpdm.c | 1 - 1 file changed, 1 deletion(-) (limited to 'sound') diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c index b7f4f7e015f3..b1be6f36e550 100644 --- a/sound/soc/omap/omap-mcpdm.c +++ b/sound/soc/omap/omap-mcpdm.c @@ -32,7 +32,6 @@ #include #include -#include #include #include #include "mcpdm.h" -- cgit v1.2.3