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ARM: S3C64XX: Add I2S clkdev support
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I2S controller has an internal mux for RCLK source clks. The list
of source clk names were passed through platform data in non-dt case.
Register the existing RCLK source clocks with clkdev using generic
connection id. This is required as part of adding DT support
for I2S controller driver.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Padmavathi Venna authored and Kukjin Kim committed Dec 19, 2012
1 parent 74779e2 commit db7af96
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Showing 2 changed files with 77 additions and 60 deletions.
126 changes: 77 additions & 49 deletions arch/arm/mach-s3c64xx/clock.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -149,25 +149,6 @@ static struct clk init_clocks_off[] = {
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C6410_CLKCON_PCLK_I2C1,
}, {
.name = "iis",
.devname = "samsung-i2s.0",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C_CLKCON_PCLK_IIS0,
}, {
.name = "iis",
.devname = "samsung-i2s.1",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C_CLKCON_PCLK_IIS1,
}, {
#ifdef CONFIG_CPU_S3C6410
.name = "iis",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C6410_CLKCON_PCLK_IIS2,
}, {
#endif
.name = "keypad",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
Expand Down Expand Up @@ -337,6 +318,32 @@ static struct clk clk_48m_spi1 = {
.ctrlbit = S3C_CLKCON_SCLK_SPI1_48,
};

static struct clk clk_i2s0 = {
.name = "iis",
.devname = "samsung-i2s.0",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C_CLKCON_PCLK_IIS0,
};

static struct clk clk_i2s1 = {
.name = "iis",
.devname = "samsung-i2s.1",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C_CLKCON_PCLK_IIS1,
};

#ifdef CONFIG_CPU_S3C6410
static struct clk clk_i2s2 = {
.name = "iis",
.devname = "samsung-i2s.2",
.parent = &clk_p,
.enable = s3c64xx_pclk_ctrl,
.ctrlbit = S3C6410_CLKCON_PCLK_IIS2,
};
#endif

static struct clk init_clocks[] = {
{
.name = "lcd",
Expand Down Expand Up @@ -660,6 +667,7 @@ static struct clksrc_sources clkset_audio1 = {
.nr_sources = ARRAY_SIZE(clkset_audio1_list),
};

#ifdef CONFIG_CPU_S3C6410
static struct clk *clkset_audio2_list[] = {
[0] = &clk_mout_epll.clk,
[1] = &clk_dout_mpll,
Expand All @@ -672,6 +680,7 @@ static struct clksrc_sources clkset_audio2 = {
.sources = clkset_audio2_list,
.nr_sources = ARRAY_SIZE(clkset_audio2_list),
};
#endif

static struct clksrc_clk clksrcs[] = {
{
Expand All @@ -683,36 +692,6 @@ static struct clksrc_clk clksrcs[] = {
.reg_src = { .reg = S3C_CLK_SRC, .shift = 5, .size = 2 },
.reg_div = { .reg = S3C_CLK_DIV1, .shift = 20, .size = 4 },
.sources = &clkset_uhost,
}, {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.0",
.ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
.sources = &clkset_audio0,
}, {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.1",
.ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
.sources = &clkset_audio1,
}, {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.2",
.ctrlbit = S3C6410_CLKCON_SCLK_AUDIO2,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C6410_CLK_SRC2, .shift = 0, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 24, .size = 4 },
.sources = &clkset_audio2,
}, {
.clk = {
.name = "irda-bus",
Expand Down Expand Up @@ -805,6 +784,43 @@ static struct clksrc_clk clk_sclk_spi1 = {
.sources = &clkset_spi_mmc,
};

static struct clksrc_clk clk_audio_bus0 = {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.0",
.ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
.sources = &clkset_audio0,
};

static struct clksrc_clk clk_audio_bus1 = {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.1",
.ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
.sources = &clkset_audio1,
};

#ifdef CONFIG_CPU_S3C6410
static struct clksrc_clk clk_audio_bus2 = {
.clk = {
.name = "audio-bus",
.devname = "samsung-i2s.2",
.ctrlbit = S3C6410_CLKCON_SCLK_AUDIO2,
.enable = s3c64xx_sclk_ctrl,
},
.reg_src = { .reg = S3C6410_CLK_SRC2, .shift = 0, .size = 3 },
.reg_div = { .reg = S3C_CLK_DIV2, .shift = 24, .size = 4 },
.sources = &clkset_audio2,
};
#endif
/* Clock initialisation code */

static struct clksrc_clk *init_parents[] = {
Expand All @@ -820,6 +836,8 @@ static struct clksrc_clk *clksrc_cdev[] = {
&clk_sclk_mmc2,
&clk_sclk_spi0,
&clk_sclk_spi1,
&clk_audio_bus0,
&clk_audio_bus1,
};

static struct clk *clk_cdev[] = {
Expand All @@ -828,6 +846,8 @@ static struct clk *clk_cdev[] = {
&clk_hsmmc2,
&clk_48m_spi0,
&clk_48m_spi1,
&clk_i2s0,
&clk_i2s1,
};

static struct clk_lookup s3c64xx_clk_lookup[] = {
Expand All @@ -844,6 +864,14 @@ static struct clk_lookup s3c64xx_clk_lookup[] = {
CLKDEV_INIT("s3c6410-spi.0", "spi_busclk2", &clk_48m_spi0),
CLKDEV_INIT("s3c6410-spi.1", "spi_busclk1", &clk_sclk_spi1.clk),
CLKDEV_INIT("s3c6410-spi.1", "spi_busclk2", &clk_48m_spi1),
CLKDEV_INIT("samsung-i2s.0", "i2s_opclk0", &clk_i2s0),
CLKDEV_INIT("samsung-i2s.0", "i2s_opclk1", &clk_audio_bus0.clk),
CLKDEV_INIT("samsung-i2s.1", "i2s_opclk0", &clk_i2s1),
CLKDEV_INIT("samsung-i2s.1", "i2s_opclk1", &clk_audio_bus1.clk),
#ifdef CONFIG_CPU_S3C6410
CLKDEV_INIT("samsung-i2s.2", "i2s_opclk0", &clk_i2s2),
CLKDEV_INIT("samsung-i2s.2", "i2s_opclk1", &clk_audio_bus2.clk),
#endif
};

#define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1)
Expand Down
11 changes: 0 additions & 11 deletions arch/arm/mach-s3c64xx/dev-audio.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -23,11 +23,6 @@
#include <linux/platform_data/asoc-s3c.h>
#include <plat/gpio-cfg.h>

static const char *rclksrc[] = {
[0] = "iis",
[1] = "audio-bus",
};

static int s3c64xx_i2s_cfg_gpio(struct platform_device *pdev)
{
unsigned int base;
Expand Down Expand Up @@ -64,11 +59,6 @@ static struct resource s3c64xx_iis0_resource[] = {

static struct s3c_audio_pdata i2sv3_pdata = {
.cfg_gpio = s3c64xx_i2s_cfg_gpio,
.type = {
.i2s = {
.src_clk = rclksrc,
},
},
};

struct platform_device s3c64xx_device_iis0 = {
Expand Down Expand Up @@ -110,7 +100,6 @@ static struct s3c_audio_pdata i2sv4_pdata = {
.type = {
.i2s = {
.quirks = QUIRK_PRI_6CHAN,
.src_clk = rclksrc,
},
},
};
Expand Down

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