[alsa-devel] [PATCH v3 0/9] ARM/ASoC: OMAP McBSP device tree support
Hello,
Changes since v2: - Replaced the IS_ERR_OR_NULL() with IS_ERR()
Changes since v1: - ICLK workaround for the sidetone module has been kept for legacy mode.
Intro mail from v2:
in order to be able to add DT support for the McBSP driver which is used on all OMAP platforms (OMAP1/2/3/4/5) I needed to make some cleanups to the stack: - Removing callbacks used by the driver for - clock re-parenting (code moved to sound driver) - FSR/CLKR mux configuration (from now on it need to be done at board level) This mux is board specific and depends on the wiring. - Replaced the cpu_is_omap* checks with future proof check. - The FIFO was not enabled on OMAP2430 SoC
It has been tested on BeagleBoard (with legacy and DT boot).
The series changes McBSP related files mostly. It would be great if the whole series could go via audio tree (if the patches are OK and it is fine by Tony).
For DT booted kernel on OMAP3 proper ICLK woraround need to be implemented. At the moment I don't see this as a stopper since we can not properly boot OMAP3 devices (especially rx51 which is using the ST). Other OMAP revisions does not have ST block so the missing workaround is not going to hurt them. I'm working on a solution which can replace the current workaround with a generic implementation to support DT and non DT booted kernels.
Regards, Peter --- Peter Ujfalusi (9): ARM/ASoC: omap-mcbsp: Move OMAP2+ clock parenting code to ASoC driver ARM: OMAP: mcbsp: Enable FIFO use for OMAP2430 ARM: OMAP: board-am3517evm: Configure McBSP1 CLKR/FSR signal source ASoC: am3517evm: Do not configure McBSP1 CLKR/FSR signal muxing ARM/ASoC: omap-mcbsp: Remove CLKR/FSR mux configuration code ASoC: omap-mcbsp: Remove unused defines ASoC: omap-mcbsp: Remove cpu_is_omap* checks from the code ARM: OMAP2+: McBSP: Do not create legacy devices when booting with DT data ASoC: omap-mcbsp: Add device tree bindings
.../devicetree/bindings/sound/omap-mcbsp.txt | 45 +++++++ arch/arm/mach-omap2/board-am3517evm.c | 13 ++ arch/arm/mach-omap2/mcbsp.c | 126 +------------------ arch/arm/plat-omap/include/plat/mcbsp.h | 2 - sound/soc/omap/am3517evm.c | 20 +--- sound/soc/omap/mcbsp.c | 54 ++++----- sound/soc/omap/mcbsp.h | 3 - sound/soc/omap/omap-mcbsp.c | 106 +++++++++++----- sound/soc/omap/omap-mcbsp.h | 20 --- 9 files changed, 162 insertions(+), 227 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/omap-mcbsp.txt
Move the McBSP CLKS re-parenting code to ASoC driver from arch/arm/mach-omap2. The call fort the re-parenting has been already limited to OMAP2+ SoC in the ASoC driver. There is no longer need to have callback function for it.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- arch/arm/mach-omap2/mcbsp.c | 40 ------------------------------- arch/arm/plat-omap/include/plat/mcbsp.h | 1 - sound/soc/omap/mcbsp.c | 31 ++++++++++++++++++++---- 3 files changed, 26 insertions(+), 46 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index 577cb77..ebc801e 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -101,45 +101,6 @@ static int omap4_mcbsp4_mux_rx_clk(struct device *dev, const char *signal, return 0; }
-/* McBSP CLKS source switching function */ -static int omap2_mcbsp_set_clk_src(struct device *dev, struct clk *clk, - const char *src) -{ - struct clk *fck_src; - char *fck_src_name; - int r; - - if (!strcmp(src, "clks_ext")) - fck_src_name = "pad_fck"; - else if (!strcmp(src, "clks_fclk")) - fck_src_name = "prcm_fck"; - else - return -EINVAL; - - fck_src = clk_get(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; - } - - pm_runtime_put_sync(dev); - - r = clk_set_parent(clk, 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; - } - - pm_runtime_get_sync(dev); - - clk_put(fck_src); - - return 0; -} - static int omap3_enable_st_clock(unsigned int id, bool enable) { unsigned int w; @@ -181,7 +142,6 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused) pdata->reg_size = 4; pdata->has_ccr = true; } - pdata->set_clk_src = omap2_mcbsp_set_clk_src;
/* On OMAP2/3 the McBSP1 port has 6 pin configuration */ if (id == 1 && oh->class->rev < MCBSP_CONFIG_TYPE4) diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index 1881412..0a7d5ca 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -47,7 +47,6 @@ struct omap_mcbsp_platform_data { bool has_wakeup; /* Wakeup capability */ bool has_ccr; /* Transceiver has configuration control registers */ int (*enable_st_clock)(unsigned int, bool); - int (*set_clk_src)(struct device *dev, struct clk *clk, const char *src); int (*mux_signal)(struct device *dev, const char *signal, const char *src); };
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c index d33c48b..935ccf6 100644 --- a/sound/soc/omap/mcbsp.c +++ b/sound/soc/omap/mcbsp.c @@ -24,6 +24,7 @@ #include <linux/delay.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/pm_runtime.h>
#include <plat/mcbsp.h>
@@ -726,19 +727,39 @@ void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx)
int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id) { + struct clk *fck_src; const char *src; + int r;
if (fck_src_id == MCBSP_CLKS_PAD_SRC) - src = "clks_ext"; + src = "pad_fck"; else if (fck_src_id == MCBSP_CLKS_PRCM_SRC) - src = "clks_fclk"; + src = "prcm_fck"; else return -EINVAL;
- if (mcbsp->pdata->set_clk_src) - return mcbsp->pdata->set_clk_src(mcbsp->dev, mcbsp->fclk, src); - else + fck_src = clk_get(mcbsp->dev, src); + if (IS_ERR(fck_src)) { + dev_err(mcbsp->dev, "CLKS: could not clk_get() %s\n", src); return -EINVAL; + } + + pm_runtime_put_sync(mcbsp->dev); + + r = clk_set_parent(mcbsp->fclk, fck_src); + if (r) { + dev_err(mcbsp->dev, "CLKS: could not clk_set_parent() to %s\n", + src); + clk_put(fck_src); + return r; + } + + pm_runtime_get_sync(mcbsp->dev); + + clk_put(fck_src); + + return 0; + }
int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux)
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
Move the McBSP CLKS re-parenting code to ASoC driver from arch/arm/mach-omap2. The call fort the re-parenting has been already limited to OMAP2+ SoC in the ASoC driver. There is no longer need to have callback function for it.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
Acked-by: Tony Lindgren tony@atomide.com
On Thu, Aug 16, 2012 at 04:41:00PM +0300, Peter Ujfalusi wrote:
Move the McBSP CLKS re-parenting code to ASoC driver from arch/arm/mach-omap2. The call fort the re-parenting has been already limited to OMAP2+ SoC in the ASoC driver. There is no longer need to have callback function for it.
Applied, thanks.
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- arch/arm/mach-omap2/mcbsp.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index ebc801e..6e046e1 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -151,7 +151,10 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused) if (id == 4 && oh->class->rev == MCBSP_CONFIG_TYPE4) pdata->mux_signal = omap4_mcbsp4_mux_rx_clk;
- if (oh->class->rev == MCBSP_CONFIG_TYPE3) { + if (oh->class->rev == MCBSP_CONFIG_TYPE2) { + /* The FIFO has 128 locations */ + pdata->buffer_size = 0x80; + } else if (oh->class->rev == MCBSP_CONFIG_TYPE3) { if (id == 2) /* The FIFO has 1024 + 256 locations */ pdata->buffer_size = 0x500;
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
arch/arm/mach-omap2/mcbsp.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index ebc801e..6e046e1 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -151,7 +151,10 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused) if (id == 4 && oh->class->rev == MCBSP_CONFIG_TYPE4) pdata->mux_signal = omap4_mcbsp4_mux_rx_clk;
- if (oh->class->rev == MCBSP_CONFIG_TYPE3) {
- if (oh->class->rev == MCBSP_CONFIG_TYPE2) {
/* The FIFO has 128 locations */pdata->buffer_size = 0x80;- } else if (oh->class->rev == MCBSP_CONFIG_TYPE3) { if (id == 2) /* The FIFO has 1024 + 256 locations */ pdata->buffer_size = 0x500;
Is this the case also for 2420? I thought some only had a FIFO at one port?
Tony
On 08/17/2012 04:07 PM, Tony Lindgren wrote:
- Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Is this the case also for 2420? I thought some only had a FIFO at one port?
IRCC (I don't have specs), nope. Only 2430 (as noted by Peter) and onwards have FIFO.
But that's true that FIFO sizes differ between the ports. E.g. only ports 2 and 3 have 1024+128 deep FIFOs in OMAP3.
On 08/17/2012 04:14 PM, Jarkko Nikula wrote:
On 08/17/2012 04:07 PM, Tony Lindgren wrote:
- Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Is this the case also for 2420? I thought some only had a FIFO at one port?
IRCC (I don't have specs), nope. Only 2430 (as noted by Peter) and onwards have FIFO.
But that's true that FIFO sizes differ between the ports. E.g. only ports 2 and 3 have 1024+128 deep FIFOs in OMAP3.
OMAP2420 McBSP does not have FIFO (the IP is closer to OMAP1 McBSP). OMAP2430, OMAP4, OMAP5 has 128 word long FIFO on all McBSP ports. On OMAP3: McBSP2 have 1024+256 (1280) word FIFO the rest of the ports have 128 long FIFO.
* Peter Ujfalusi peter.ujfalusi@ti.com [120817 07:03]:
On 08/17/2012 04:14 PM, Jarkko Nikula wrote:
On 08/17/2012 04:07 PM, Tony Lindgren wrote:
- Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Is this the case also for 2420? I thought some only had a FIFO at one port?
IRCC (I don't have specs), nope. Only 2430 (as noted by Peter) and onwards have FIFO.
But that's true that FIFO sizes differ between the ports. E.g. only ports 2 and 3 have 1024+128 deep FIFOs in OMAP3.
OMAP2420 McBSP does not have FIFO (the IP is closer to OMAP1 McBSP). OMAP2430, OMAP4, OMAP5 has 128 word long FIFO on all McBSP ports. On OMAP3: McBSP2 have 1024+256 (1280) word FIFO the rest of the ports have 128 long FIFO.
Thanks, is this patch still correct so it does not try to enable FIFO for 2420?
Regards,
Tony
Hi Tony,
On Sat, Aug 18, 2012 at 8:08 AM, Tony Lindgren tony@atomide.com wrote:
Thanks, is this patch still correct so it does not try to enable FIFO for 2420?
Yes it only enables the FIFO for 2430, 2420 is not affected.
* Ujfalusi, Peter peter.ujfalusi@ti.com [120818 08:58]:
Hi Tony,
On Sat, Aug 18, 2012 at 8:08 AM, Tony Lindgren tony@atomide.com wrote:
Thanks, is this patch still correct so it does not try to enable FIFO for 2420?
Yes it only enables the FIFO for 2430, 2420 is not affected.
OK thanks for the clarification.
Tony
On Thu, Aug 16, 2012 at 04:41:01PM +0300, Peter Ujfalusi wrote:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
I applied this - Tony, from the thread it seemed you were OK even though you didn't explicitly ack it?
* Mark Brown broonie@opensource.wolfsonmicro.com [120822 12:12]:
On Thu, Aug 16, 2012 at 04:41:01PM +0300, Peter Ujfalusi wrote:
On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of the FIFO for the audio stack.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
I applied this - Tony, from the thread it seemed you were OK even though you didn't explicitly ack it?
Ah yes sorry, I'm fine with it. Sounds like you already applied it, so too late to ack. But just in case:
Acked-by: Tony Lindgren tony@atomide.com
am3517evm board uses McBSP1 for audio with 4pin configuration. The CLKR/FSR signals need to be connected to CLKX/FSX pin of the SoC in this case.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- arch/arm/mach-omap2/board-am3517evm.c | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c index 18f6010..592812a 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -264,6 +264,16 @@ static __init void am3517_evm_musb_init(void) usb_musb_init(&musb_board_data); }
+static __init void am3517_evm_mcbsp1_init(void) +{ + u32 devconf0; + + /* McBSP1 CLKR/FSR signal to be connected to CLKX/FSX pin */ + devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); + devconf0 |= OMAP2_MCBSP1_CLKR_MASK | OMAP2_MCBSP1_FSR_MASK; + omap_ctrl_writel(devconf0, OMAP2_CONTROL_DEVCONF0); +} + static const struct usbhs_omap_board_data usbhs_bdata __initconst = { .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY, #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \ @@ -373,6 +383,9 @@ static void __init am3517_evm_init(void) /* MUSB */ am3517_evm_musb_init();
+ /* McBSP1 */ + am3517_evm_mcbsp1_init(); + /* MMC init function */ omap_hsmmc_init(mmc); }
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
am3517evm board uses McBSP1 for audio with 4pin configuration. The CLKR/FSR signals need to be connected to CLKX/FSX pin of the SoC in this case.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
Acked-by: Tony Lindgren tony@atomide.com
On Thu, Aug 16, 2012 at 04:41:02PM +0300, Peter Ujfalusi wrote:
am3517evm board uses McBSP1 for audio with 4pin configuration. The CLKR/FSR signals need to be connected to CLKX/FSX pin of the SoC in this case.
Applied, thanks.
The muxing is done at board level, no need to do it in the ASoC machine driver.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- sound/soc/omap/am3517evm.c | 20 ++------------------ 1 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/sound/soc/omap/am3517evm.c b/sound/soc/omap/am3517evm.c index 009533a..a997988 100644 --- a/sound/soc/omap/am3517evm.c +++ b/sound/soc/omap/am3517evm.c @@ -47,26 +47,10 @@ static int am3517evm_hw_params(struct snd_pcm_substream *substream, /* Set the codec system clock for DAC and ADC */ ret = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); - if (ret < 0) { + if (ret < 0) printk(KERN_ERR "can't set codec system clock\n"); - return ret; - } - - ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0, - SND_SOC_CLOCK_IN); - if (ret < 0) { - printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n"); - return ret; - }
- snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0, - SND_SOC_CLOCK_IN); - if (ret < 0) { - printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n"); - return ret; - } - - return 0; + return ret; }
static struct snd_soc_ops am3517evm_ops = {
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
The muxing is done at board level, no need to do it in the ASoC machine driver.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
Acked-by: Tony Lindgren tony@atomide.com
Remove the feature to configure the CLKR/FSR mux on McBSP port with 6pin configuration. When moving to devicetree these callback can no longer be used in a clean way anymore. If a board require to change the 6pin port to work in 4pin setup it needs to set up the mux in the board file. For OMAP2/3: u32 devconf0;
/* McBSP1 CLKR/FSR signal to be connected to CLKX/FSX pin */ devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); devconf0 |= OMAP2_MCBSP1_CLKR_MASK | OMAP2_MCBSP1_FSR_MASK; omap_ctrl_writel(devconf0, OMAP2_CONTROL_DEVCONF0);
For OMAP4: u32 mcbsp_pad;
/* McBSP4 CLKR/FSR signal to be connected to CLKX/FSX pin */ mcbsp_pad = omap4_ctrl_pad_readl(OMAP2_CONTROL_DEVCONF0); mcbsp_pad |= ((1 << 31) | (1 << 30)); omap4_ctrl_pad_writel(mcbsp_pad, OMAP2_CONTROL_DEVCONF0);
In case when the kernel is booted with DT blob the pinctrl-single will be provided as soon as it is enabled on the platform.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- arch/arm/mach-omap2/mcbsp.c | 77 ------------------------------- arch/arm/plat-omap/include/plat/mcbsp.h | 1 - sound/soc/omap/mcbsp.c | 31 ------------ sound/soc/omap/mcbsp.h | 3 - sound/soc/omap/omap-mcbsp.c | 32 +------------ sound/soc/omap/omap-mcbsp.h | 4 -- 6 files changed, 3 insertions(+), 145 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index 6e046e1..660e00b 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -25,8 +25,6 @@ #include <plat/omap_device.h> #include <linux/pm_runtime.h>
-#include "control.h" - /* * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle. * Sidetone needs non-gated ICLK and sidetone autoidle is broken. @@ -34,73 +32,6 @@ #include "cm2xxx_3xxx.h" #include "cm-regbits-34xx.h"
-/* McBSP1 internal signal muxing function for OMAP2/3 */ -static int omap2_mcbsp1_mux_rx_clk(struct device *dev, const char *signal, - const char *src) -{ - u32 v; - - v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); - - if (!strcmp(signal, "clkr")) { - if (!strcmp(src, "clkr")) - v &= ~OMAP2_MCBSP1_CLKR_MASK; - else if (!strcmp(src, "clkx")) - v |= OMAP2_MCBSP1_CLKR_MASK; - else - return -EINVAL; - } else if (!strcmp(signal, "fsr")) { - if (!strcmp(src, "fsr")) - v &= ~OMAP2_MCBSP1_FSR_MASK; - else if (!strcmp(src, "fsx")) - v |= OMAP2_MCBSP1_FSR_MASK; - else - return -EINVAL; - } else { - return -EINVAL; - } - - omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); - - return 0; -} - -/* McBSP4 internal signal muxing function for OMAP4 */ -#define OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX (1 << 31) -#define OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX (1 << 30) -static int omap4_mcbsp4_mux_rx_clk(struct device *dev, const char *signal, - const char *src) -{ - u32 v; - - /* - * In CONTROL_MCBSPLP register only bit 30 (CLKR mux), and bit 31 (FSR - * mux) is used */ - v = omap4_ctrl_pad_readl(OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_MCBSPLP); - - if (!strcmp(signal, "clkr")) { - if (!strcmp(src, "clkr")) - v &= ~OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX; - else if (!strcmp(src, "clkx")) - v |= OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX; - else - return -EINVAL; - } else if (!strcmp(signal, "fsr")) { - if (!strcmp(src, "fsr")) - v &= ~OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX; - else if (!strcmp(src, "fsx")) - v |= OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX; - else - return -EINVAL; - } else { - return -EINVAL; - } - - omap4_ctrl_pad_writel(v, OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_MCBSPLP); - - return 0; -} - static int omap3_enable_st_clock(unsigned int id, bool enable) { unsigned int w; @@ -143,14 +74,6 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused) pdata->has_ccr = true; }
- /* On OMAP2/3 the McBSP1 port has 6 pin configuration */ - if (id == 1 && oh->class->rev < MCBSP_CONFIG_TYPE4) - pdata->mux_signal = omap2_mcbsp1_mux_rx_clk; - - /* On OMAP4 the McBSP4 port has 6 pin configuration */ - if (id == 4 && oh->class->rev == MCBSP_CONFIG_TYPE4) - pdata->mux_signal = omap4_mcbsp4_mux_rx_clk; - if (oh->class->rev == MCBSP_CONFIG_TYPE2) { /* The FIFO has 128 locations */ pdata->buffer_size = 0x80; diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index 0a7d5ca..c78d90b 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -47,7 +47,6 @@ struct omap_mcbsp_platform_data { bool has_wakeup; /* Wakeup capability */ bool has_ccr; /* Transceiver has configuration control registers */ int (*enable_st_clock)(unsigned int, bool); - int (*mux_signal)(struct device *dev, const char *signal, const char *src); };
/** diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c index 935ccf6..bc06175 100644 --- a/sound/soc/omap/mcbsp.c +++ b/sound/soc/omap/mcbsp.c @@ -762,37 +762,6 @@ int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
}
-int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux) -{ - const char *signal, *src; - - if (!mcbsp->pdata->mux_signal) - return -EINVAL; - - switch (mux) { - case CLKR_SRC_CLKR: - signal = "clkr"; - src = "clkr"; - break; - case CLKR_SRC_CLKX: - signal = "clkr"; - src = "clkx"; - break; - case FSR_SRC_FSR: - signal = "fsr"; - src = "fsr"; - break; - case FSR_SRC_FSX: - signal = "fsr"; - src = "fsx"; - break; - default: - return -EINVAL; - } - - return mcbsp->pdata->mux_signal(mcbsp->dev, signal, src); -} - #define max_thres(m) (mcbsp->pdata->buffer_size) #define valid_threshold(m, val) ((val) <= max_thres(m)) #define THRESHOLD_PROP_BUILDER(prop) \ diff --git a/sound/soc/omap/mcbsp.h b/sound/soc/omap/mcbsp.h index 262a615..49a6725 100644 --- a/sound/soc/omap/mcbsp.h +++ b/sound/soc/omap/mcbsp.h @@ -334,9 +334,6 @@ void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx); /* McBSP functional clock source changing function */ int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);
-/* McBSP signal muxing API */ -int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux); - /* Sidetone specific API */ int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain); int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain); diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 1046083..5061594 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -516,21 +516,9 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, return -EBUSY; }
- if (clk_id == OMAP_MCBSP_SYSCLK_CLK || - clk_id == OMAP_MCBSP_SYSCLK_CLKS_FCLK || - clk_id == OMAP_MCBSP_SYSCLK_CLKS_EXT || - clk_id == OMAP_MCBSP_SYSCLK_CLKX_EXT || - clk_id == OMAP_MCBSP_SYSCLK_CLKR_EXT) { - mcbsp->in_freq = freq; - regs->srgr2 &= ~CLKSM; - regs->pcr0 &= ~SCLKME; - } else if (cpu_class_is_omap1()) { - /* - * McBSP CLKR/FSR signal muxing functions are only available on - * OMAP2 or newer versions - */ - return -EINVAL; - } + mcbsp->in_freq = freq; + regs->srgr2 &= ~CLKSM; + regs->pcr0 &= ~SCLKME;
switch (clk_id) { case OMAP_MCBSP_SYSCLK_CLK: @@ -558,20 +546,6 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, case OMAP_MCBSP_SYSCLK_CLKR_EXT: regs->pcr0 |= SCLKME; break; - - - case OMAP_MCBSP_CLKR_SRC_CLKR: - err = omap_mcbsp_6pin_src_mux(mcbsp, CLKR_SRC_CLKR); - break; - case OMAP_MCBSP_CLKR_SRC_CLKX: - err = omap_mcbsp_6pin_src_mux(mcbsp, CLKR_SRC_CLKX); - break; - case OMAP_MCBSP_FSR_SRC_FSR: - err = omap_mcbsp_6pin_src_mux(mcbsp, FSR_SRC_FSR); - break; - case OMAP_MCBSP_FSR_SRC_FSX: - err = omap_mcbsp_6pin_src_mux(mcbsp, FSR_SRC_FSX); - break; default: err = -ENODEV; } diff --git a/sound/soc/omap/omap-mcbsp.h b/sound/soc/omap/omap-mcbsp.h index f877b16..baebcee 100644 --- a/sound/soc/omap/omap-mcbsp.h +++ b/sound/soc/omap/omap-mcbsp.h @@ -32,10 +32,6 @@ enum omap_mcbsp_clksrg_clk { OMAP_MCBSP_SYSCLK_CLK, /* Internal ICLK */ OMAP_MCBSP_SYSCLK_CLKX_EXT, /* External CLKX pin */ OMAP_MCBSP_SYSCLK_CLKR_EXT, /* External CLKR pin */ - OMAP_MCBSP_CLKR_SRC_CLKR, /* CLKR from CLKR pin */ - OMAP_MCBSP_CLKR_SRC_CLKX, /* CLKR from CLKX pin */ - OMAP_MCBSP_FSR_SRC_FSR, /* FSR from FSR pin */ - OMAP_MCBSP_FSR_SRC_FSX, /* FSR from FSX pin */ };
/* McBSP dividers */
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
Remove the feature to configure the CLKR/FSR mux on McBSP port with 6pin configuration. When moving to devicetree these callback can no longer be used in a clean way anymore. If a board require to change the 6pin port to work in 4pin setup it needs to set up the mux in the board file. For OMAP2/3: u32 devconf0;
/* McBSP1 CLKR/FSR signal to be connected to CLKX/FSX pin */ devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); devconf0 |= OMAP2_MCBSP1_CLKR_MASK | OMAP2_MCBSP1_FSR_MASK; omap_ctrl_writel(devconf0, OMAP2_CONTROL_DEVCONF0);
For OMAP4: u32 mcbsp_pad;
/* McBSP4 CLKR/FSR signal to be connected to CLKX/FSX pin */ mcbsp_pad = omap4_ctrl_pad_readl(OMAP2_CONTROL_DEVCONF0); mcbsp_pad |= ((1 << 31) | (1 << 30)); omap4_ctrl_pad_writel(mcbsp_pad, OMAP2_CONTROL_DEVCONF0);
In case when the kernel is booted with DT blob the pinctrl-single will be provided as soon as it is enabled on the platform.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com
Acked-by: Tony Lindgren tony@atomide.com
On Thu, Aug 16, 2012 at 04:41:04PM +0300, Peter Ujfalusi wrote:
Remove the feature to configure the CLKR/FSR mux on McBSP port with 6pin configuration. When moving to devicetree these callback can no longer be used in a clean way anymore.
Applied but this didn't quite apply cleanly, please check that it did so.
Hi Mark,
On 08/22/2012 10:15 PM, Mark Brown wrote:
Applied but this didn't quite apply cleanly, please check that it did so.
The part which removes the omap_mcbsp_6pin_src_mux() function from sound/soc/omap/mcbsp.c is the one which did not made it.
It failed to apply on top of topic/omap is that the branch does not have the following commit: d0db84e ASoC: omap-mcbsp: Fix 6pin mux configuration
This patch is in your for-next branch. I can not find it in the for-3.6 or for-3.7 branch either.
Commit d0db84e was planed to be part of 3.6 AFAIK. Without that patch in topic/omap we are going to have merge issue with 3.7.
I can send a patch which removes the omap_mcbsp_6pin_src_mux() in topic/omap but the patch will similarly fail when we going to have d0db84e already applied mainline.
NUM_LINKS is no longer in use by the code.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- sound/soc/omap/omap-mcbsp.h | 16 ---------------- 1 files changed, 0 insertions(+), 16 deletions(-)
diff --git a/sound/soc/omap/omap-mcbsp.h b/sound/soc/omap/omap-mcbsp.h index baebcee..ba8386a 100644 --- a/sound/soc/omap/omap-mcbsp.h +++ b/sound/soc/omap/omap-mcbsp.h @@ -39,22 +39,6 @@ enum omap_mcbsp_div { OMAP_MCBSP_CLKGDV, /* Sample rate generator divider */ };
-#if defined(CONFIG_SOC_OMAP2420) -#define NUM_LINKS 2 -#endif -#if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) -#undef NUM_LINKS -#define NUM_LINKS 3 -#endif -#if defined(CONFIG_ARCH_OMAP4) -#undef NUM_LINKS -#define NUM_LINKS 4 -#endif -#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_OMAP2430) -#undef NUM_LINKS -#define NUM_LINKS 5 -#endif - int omap_mcbsp_st_add_controls(struct snd_soc_pcm_runtime *rtd);
#endif
We can use the has_ccr flag to replace the cpu_is_omap* checks. This provides future proof implementation and we do not need to update the code if new OMAP revision starts to use the McBSP driver.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Jarkko Nikula jarkko.nikula@bitmer.com --- sound/soc/omap/omap-mcbsp.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 5061594..b9770ee 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -398,12 +398,14 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai, /* Generic McBSP register settings */ regs->spcr2 |= XINTM(3) | FREE; regs->spcr1 |= RINTM(3); - /* RFIG and XFIG are not defined in 34xx */ - if (!cpu_is_omap34xx() && !cpu_is_omap44xx()) { + /* RFIG and XFIG are not defined in 2430 and on OMAP3+ */ + if (!mcbsp->pdata->has_ccr) { regs->rcr2 |= RFIG; regs->xcr2 |= XFIG; } - if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) { + + /* Configure XCCR/RCCR only for revisions which have ccr registers */ + if (mcbsp->pdata->has_ccr) { regs->xccr = DXENDLY(1) | XDMAEN | XDISABLE; regs->rccr = RFULL_CYCLE | RDMAEN | RDISABLE; }
On Thu, Aug 16, 2012 at 04:41:06PM +0300, Peter Ujfalusi wrote:
We can use the has_ccr flag to replace the cpu_is_omap* checks. This provides future proof implementation and we do not need to update the code if new OMAP revision starts to use the McBSP driver.
Applied, thanks.
Only create the devices in a legacy way if we do not have the DT data.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- arch/arm/mach-omap2/mcbsp.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index 660e00b..d57a357 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -15,6 +15,7 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/slab.h>
@@ -113,7 +114,8 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
static int __init omap2_mcbsp_init(void) { - omap_hwmod_for_each_by_class("mcbsp", omap_init_mcbsp, NULL); + if (!of_have_populated_dt()) + omap_hwmod_for_each_by_class("mcbsp", omap_init_mcbsp, NULL);
return 0; }
* Peter Ujfalusi peter.ujfalusi@ti.com [120816 06:41]:
Only create the devices in a legacy way if we do not have the DT data.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com
Acked-by: Tony Lindgren tony@atomide.com
On Thu, Aug 16, 2012 at 04:41:07PM +0300, Peter Ujfalusi wrote:
Only create the devices in a legacy way if we do not have the DT data.
Applied, thanks.
Device tree support for McBSP modules on OMAP2+ SoC.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- .../devicetree/bindings/sound/omap-mcbsp.txt | 45 +++++++++++++ sound/soc/omap/omap-mcbsp.c | 66 +++++++++++++++++++- 2 files changed, 110 insertions(+), 1 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/omap-mcbsp.txt
diff --git a/Documentation/devicetree/bindings/sound/omap-mcbsp.txt b/Documentation/devicetree/bindings/sound/omap-mcbsp.txt new file mode 100644 index 0000000..447cb13 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/omap-mcbsp.txt @@ -0,0 +1,45 @@ +* Texas Instruments OMAP2+ McBSP module + +Required properties: +- compatible: "ti,omap2420-mcbsp" for McBSP on OMAP2420 + "ti,omap2430-mcbsp" for McBSP on OMAP2430 + "ti,omap3-mcbsp" for McBSP on OMAP3 + "ti,omap4-mcbsp" for McBSP on OMAP4 and newer SoC +- reg: Register location and size, for OMAP4+ as an array: + <MPU access base address, size>, + <L3 interconnect address, size>; +- interrupts: Interrupt numbers for the McBSP port, as an array in case the + McBSP IP have more interrupt lines: + <OCP compliant irq>, + <TX irq>, + <RX irq>; +- interrupt-parent: The parent interrupt controller +- ti,buffer-size: Size of the FIFO on the port (OMAP2430 and newer SoC) +- ti,hwmods: Name of the hwmod associated to the McBSP port + +Sidetone support for OMAP3 McBSP2 and 3 ports: +- sidetone { }: Within this section the following parameters are required: +- reg: Register location and size for the ST block +- interrupts: The interrupt number for the ST block +- interrupt-parent: The parent interrupt controller for the ST block + +Example: + +mcbsp2: mcbsp@49022000 { + compatible = "ti,omap3-mcbsp"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x49022000 0xff>; + interrupts = <0 17 0x4>, /* OCP compliant interrup */ + <0 62 0x4>, /* TX interrup */ + <0 63 0x4>; /* RX interrup */ + interrupt-parent = <&intc>; + ti,buffer-size = <1280>; + ti,hwmods = "mcbsp2"; + + sidetone { + reg = <0x49028000 0xff>; + interrupts = <0 4 0x4>; + interrupt-parent = <&intc>; + }; +}; diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index b9770ee..2e1750e 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -26,6 +26,8 @@ #include <linux/module.h> #include <linux/device.h> #include <linux/pm_runtime.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -737,13 +739,74 @@ int omap_mcbsp_st_add_controls(struct snd_soc_pcm_runtime *rtd) } EXPORT_SYMBOL_GPL(omap_mcbsp_st_add_controls);
+static struct omap_mcbsp_platform_data omap2420_pdata = { + .reg_step = 4, + .reg_size = 2, +}; + +static struct omap_mcbsp_platform_data omap2430_pdata = { + .reg_step = 4, + .reg_size = 4, + .has_ccr = true, +}; + +static struct omap_mcbsp_platform_data omap3_pdata = { + .reg_step = 4, + .reg_size = 4, + .has_ccr = true, + .has_wakeup = true, +}; + +static struct omap_mcbsp_platform_data omap4_pdata = { + .reg_step = 4, + .reg_size = 4, + .has_ccr = true, + .has_wakeup = true, +}; + +static const struct of_device_id omap_mcbsp_of_match[] = { + { + .compatible = "ti,omap2420-mcbsp", + .data = &omap2420_pdata, + }, + { + .compatible = "ti,omap2430-mcbsp", + .data = &omap2430_pdata, + }, + { + .compatible = "ti,omap3-mcbsp", + .data = &omap3_pdata, + }, + { + .compatible = "ti,omap4-mcbsp", + .data = &omap4_pdata, + }, + { }, +}; +MODULE_DEVICE_TABLE(of, omap_mcbsp_of_match); + static __devinit int asoc_mcbsp_probe(struct platform_device *pdev) { struct omap_mcbsp_platform_data *pdata = dev_get_platdata(&pdev->dev); struct omap_mcbsp *mcbsp; + const struct of_device_id *match; int ret;
- if (!pdata) { + match = of_match_device(omap_mcbsp_of_match, &pdev->dev); + if (match) { + struct device_node *node = pdev->dev.of_node; + int buffer_size; + + pdata = devm_kzalloc(&pdev->dev, + sizeof(struct omap_mcbsp_platform_data), + GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + memcpy(pdata, match->data, sizeof(*pdata)); + if (!of_property_read_u32(node, "ti,buffer-size", &buffer_size)) + pdata->buffer_size = buffer_size; + } else if (!pdata) { dev_err(&pdev->dev, "missing platform data.\n"); return -EINVAL; } @@ -785,6 +848,7 @@ static struct platform_driver asoc_mcbsp_driver = { .driver = { .name = "omap-mcbsp", .owner = THIS_MODULE, + .of_match_table = omap_mcbsp_of_match, },
.probe = asoc_mcbsp_probe,
On Thu, Aug 16, 2012 at 04:40:59PM +0300, Peter Ujfalusi wrote:
in order to be able to add DT support for the McBSP driver which is used on all OMAP platforms (OMAP1/2/3/4/5) I needed to make some cleanups to the stack:
Tony, are you OK with these changes going via ASoC?
* Mark Brown broonie@opensource.wolfsonmicro.com [120817 03:18]:
On Thu, Aug 16, 2012 at 04:40:59PM +0300, Peter Ujfalusi wrote:
in order to be able to add DT support for the McBSP driver which is used on all OMAP platforms (OMAP1/2/3/4/5) I needed to make some cleanups to the stack:
Tony, are you OK with these changes going via ASoC?
Yes, had one 2420 related question about the FIFO, other than that I've acked the omap related patches.
Tony
participants (5)
-
Jarkko Nikula -
Mark Brown -
Peter Ujfalusi -
Tony Lindgren -
Ujfalusi, Peter