This is for supporting saif record function.
Signed-off-by: Dong Aisheng b29396@freescale.com Cc: Sascha Hauer s.hauer@pengutronix.de Cc: Wolfram Sang w.sang@pengutronix.de Cc: Mark Brown broonie@opensource.wolfsonmicro.com Cc: Liam Girdwood lrg@ti.com
--- changes since v1: * move saif clkmux code into mach-specific part --- arch/arm/mach-mxs/clock-mx28.c | 47 +++++++++++++++++++++++ arch/arm/mach-mxs/devices-mx28.h | 4 +- arch/arm/mach-mxs/devices/platform-mxs-saif.c | 5 +- arch/arm/mach-mxs/include/mach/common.h | 2 + arch/arm/mach-mxs/include/mach/devices-common.h | 4 +- arch/arm/mach-mxs/include/mach/digctl.h | 18 +++++++++ arch/arm/mach-mxs/mach-mx28evk.c | 15 ++++++- 7 files changed, 89 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c index 7954013..f0c7cb6 100644 --- a/arch/arm/mach-mxs/clock-mx28.c +++ b/arch/arm/mach-mxs/clock-mx28.c @@ -29,6 +29,7 @@ #include <mach/mx28.h> #include <mach/common.h> #include <mach/clock.h> +#include <mach/digctl.h>
#include "regs-clkctrl-mx28.h"
@@ -43,6 +44,52 @@ static struct clk emi_clk; static struct clk saif0_clk; static struct clk saif1_clk; static struct clk clk32k_clk; +static unsigned int saif_clkmux; + +/* + * HW_SAIF_CLKMUX_SEL: + * DIRECT(0x0): SAIF0 clock pins selected for SAIF0 input clocks, and SAIF1 + * clock pins selected for SAIF1 input clocks. + * CROSSINPUT(0x1): SAIF1 clock inputs selected for SAIF0 input clocks, and + * SAIF0 clock inputs selected for SAIF1 input clocks. + * EXTMSTR0(0x2): SAIF0 clock pin selected for both SAIF0 and SAIF1 input + * clocks. + * EXTMSTR1(0x3): SAIF1 clock pin selected for both SAIF0 and SAIF1 input + * clocks. + */ +int mxs_saif_clkmux_select(unsigned int clkmux) +{ + if (clkmux > 0x3) + return -EINVAL; + + __raw_writel(clkmux << 10, DIGCTRL_BASE_ADDR + MXS_SET_ADDR); + saif_clkmux = clkmux; + return 0; +} + +int mxs_get_saif_clk_master_id(unsigned int saif_id) +{ + unsigned int master_id; + + switch (saif_clkmux) { + case MXS_DIGCTL_SAIF_CLKMUX_DIRECT: + master_id = saif_id; + break; + case MXS_DIGCTL_SAIF_CLKMUX_CROSSINPUT: + master_id = saif_id ? 0 : 1; + break; + case MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0: + master_id = 0; + break; + case MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR1: + master_id = 1; + break; + default: + return -EINVAL; + } + + return master_id; +}
static int _raw_clk_enable(struct clk *clk) { diff --git a/arch/arm/mach-mxs/devices-mx28.h b/arch/arm/mach-mxs/devices-mx28.h index c888710..40be649 100644 --- a/arch/arm/mach-mxs/devices-mx28.h +++ b/arch/arm/mach-mxs/devices-mx28.h @@ -47,6 +47,8 @@ struct platform_device *__init mx28_add_mxsfb( const struct mxsfb_platform_data *pdata);
extern const struct mxs_saif_data mx28_saif_data[] __initconst; -#define mx28_add_saif(id) mxs_add_saif(&mx28_saif_data[id]) +#define mx28_add_saif(id, pdata) \ + mxs_add_saif(&mx28_saif_data[id], pdata) +
struct platform_device *__init mx28_add_rtc_stmp3xxx(void); diff --git a/arch/arm/mach-mxs/devices/platform-mxs-saif.c b/arch/arm/mach-mxs/devices/platform-mxs-saif.c index 1ec965e..f6e3a60 100644 --- a/arch/arm/mach-mxs/devices/platform-mxs-saif.c +++ b/arch/arm/mach-mxs/devices/platform-mxs-saif.c @@ -32,7 +32,8 @@ const struct mxs_saif_data mx28_saif_data[] __initconst = { }; #endif
-struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data) +struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data, + const struct mxs_saif_platform_data *pdata) { struct resource res[] = { { @@ -56,5 +57,5 @@ struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data) };
return mxs_add_platform_device("mxs-saif", data->id, res, - ARRAY_SIZE(res), NULL, 0); + ARRAY_SIZE(res), pdata, sizeof(*pdata)); } diff --git a/arch/arm/mach-mxs/include/mach/common.h b/arch/arm/mach-mxs/include/mach/common.h index 635bb5d..bf91a10 100644 --- a/arch/arm/mach-mxs/include/mach/common.h +++ b/arch/arm/mach-mxs/include/mach/common.h @@ -29,4 +29,6 @@ extern void mx28_init_irq(void);
extern void icoll_init_irq(void);
+extern int mxs_saif_clkmux_select(unsigned int clkmux); +extern int mxs_get_saif_clk_master_id(unsigned int saif_id); #endif /* __MACH_MXS_COMMON_H__ */ diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h index a8080f4..dc369c1 100644 --- a/arch/arm/mach-mxs/include/mach/devices-common.h +++ b/arch/arm/mach-mxs/include/mach/devices-common.h @@ -94,6 +94,7 @@ struct platform_device *__init mxs_add_mxs_pwm( resource_size_t iobase, int id);
/* saif */ +#include <sound/saif.h> struct mxs_saif_data { int id; resource_size_t iobase; @@ -103,4 +104,5 @@ struct mxs_saif_data { };
struct platform_device *__init mxs_add_saif( - const struct mxs_saif_data *data); + const struct mxs_saif_data *data, + const struct mxs_saif_platform_data *pdata); diff --git a/arch/arm/mach-mxs/include/mach/digctl.h b/arch/arm/mach-mxs/include/mach/digctl.h new file mode 100644 index 0000000..6231e10 --- /dev/null +++ b/arch/arm/mach-mxs/include/mach/digctl.h @@ -0,0 +1,18 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __MACH_DIGCTL_H__ +#define __MACH_DIGCTL_H__ + +/* MXS DIGCTL SAIF CLKMUX */ +#define MXS_DIGCTL_SAIF_CLKMUX_DIRECT 0x0 +#define MXS_DIGCTL_SAIF_CLKMUX_CROSSINPUT 0x1 +#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0 0x2 +#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR1 0x3 + +#endif diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c index 4a3cca3..6affe5d 100644 --- a/arch/arm/mach-mxs/mach-mx28evk.c +++ b/arch/arm/mach-mxs/mach-mx28evk.c @@ -28,6 +28,7 @@
#include <mach/common.h> #include <mach/iomux-mx28.h> +#include <mach/digctl.h>
#include "devices-mx28.h"
@@ -417,6 +418,16 @@ static void __init mx28evk_add_regulators(void) static void __init mx28evk_add_regulators(void) {} #endif
+static int mx28evk_mxs_saif_pinit(void) +{ + return mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); +} + +struct mxs_saif_platform_data mx28evk_mxs_saif_pdata __initdata = { + .init = mx28evk_mxs_saif_pinit, + .get_master_id = mxs_get_saif_clk_master_id, +}; + static void __init mx28evk_init(void) { int ret; @@ -457,8 +468,8 @@ static void __init mx28evk_init(void)
mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
- mx28_add_saif(0); - mx28_add_saif(1); + mx28_add_saif(0, &mx28evk_mxs_saif_pdata); + mx28_add_saif(1, &mx28evk_mxs_saif_pdata);
mx28_add_mxs_i2c(0); i2c_register_board_info(0, mxs_i2c0_board_info,