[alsa-devel] [PATCH 1/2] ARM: EXYNOS4: Add PCM audio support for WM8994
Sangbeom Kim
sbkim73 at samsung.com
Mon Apr 25 08:54:32 CEST 2011
This patch add pcm audio configuration for SMDKV310 and SMDKC210.
Platform device and pcm clock initialization code is added.
Signed-off-by: Sangbeom Kim <sbkim73 at samsung.com>
---
arch/arm/mach-exynos4/clock.c | 169 ++++++++++++++++++++++-
arch/arm/mach-exynos4/cpu.c | 5 +
arch/arm/mach-exynos4/dev-audio.c | 5 +
arch/arm/mach-exynos4/include/mach/map.h | 3 +
arch/arm/mach-exynos4/include/mach/regs-audss.h | 25 ++++
arch/arm/mach-exynos4/mach-smdkc210.c | 7 +
arch/arm/mach-exynos4/mach-smdkv310.c | 7 +
arch/arm/plat-samsung/include/plat/audio.h | 2 +
8 files changed, 221 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/mach-exynos4/include/mach/regs-audss.h
diff --git a/arch/arm/mach-exynos4/clock.c b/arch/arm/mach-exynos4/clock.c
index 871f9d5..77cd81f 100644
--- a/arch/arm/mach-exynos4/clock.c
+++ b/arch/arm/mach-exynos4/clock.c
@@ -23,6 +23,7 @@
#include <mach/map.h>
#include <mach/regs-clock.h>
+#include <mach/regs-audss.h>
#include <mach/sysmmu.h>
static struct clk clk_sclk_hdmi27m = {
@@ -47,6 +48,31 @@ static struct clk clk_sclk_usbphy1 = {
.id = -1,
};
+static struct clk clk_sclk_xxti = {
+ .name = "sclk_usbphy1",
+ .id = -1,
+};
+
+static struct clk clk_sclk_xusbxti = {
+ .name = "sclk_usbphy1",
+ .id = -1,
+};
+
+static struct clk clk_audiocdclk0 = {
+ .name = "audiocdclk",
+ .id = 0,
+};
+
+static struct clk clk_audiocdclk1 = {
+ .name = "audiocdclk",
+ .id = 1,
+};
+
+static struct clk clk_audiocdclk2 = {
+ .name = "audiocdclk",
+ .id = 2,
+};
+
static int exynos4_clksrc_mask_top_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLKSRC_MASK_TOP, clk, enable);
@@ -127,6 +153,16 @@ static int exynos4_clk_ip_perir_ctrl(struct clk *clk, int enable)
return s5p_gatectrl(S5P_CLKGATE_IP_PERIR, clk, enable);
}
+static int exynos4_clksrc_mask_maudio_ctrl(struct clk *clk, int enable)
+{
+ return s5p_gatectrl(S5P_CLKSRC_MASK_MAUDIO, clk, enable);
+}
+
+static int exynos4_clk_audss_ctrl(struct clk *clk, int enable)
+{
+ return s5p_gatectrl(S5P_CLKGATE_AUDSS, clk, enable);
+}
+
/* Core list of CMU_CPU side */
static struct clksrc_clk clk_mout_apll = {
@@ -561,6 +597,21 @@ static struct clk init_clocks_off[] = {
.enable = exynos4_clk_ip_peril_ctrl,
.ctrlbit = (1 << 27),
}, {
+ .name = "pcm",
+ .id = 0,
+ .enable = exynos4_clk_audss_ctrl,
+ .ctrlbit = S5P_AUDSS_CLKGATE_PCMSPECIAL,
+ }, {
+ .name = "pcm",
+ .id = 1,
+ .enable = exynos4_clk_ip_peril_ctrl,
+ .ctrlbit = (1 << 22),
+ }, {
+ .name = "pcm",
+ .id = 2,
+ .enable = exynos4_clk_ip_peril_ctrl,
+ .ctrlbit = (1 << 23),
+ }, {
.name = "fimg2d",
.id = -1,
.enable = exynos4_clk_ip_image_ctrl,
@@ -686,6 +737,93 @@ static struct clk init_clocks_off[] = {
}
};
+static struct clk *clkset_sclk_audio0_list[] = {
+ [0] = &clk_audiocdclk0,
+ [1] = NULL,
+ [2] = &clk_sclk_hdmi27m,
+ [3] = &clk_sclk_usbphy0,
+ [4] = &clk_sclk_xxti,
+ [5] = &clk_sclk_xusbxti,
+ [6] = &clk_mout_mpll.clk,
+ [7] = &clk_mout_epll.clk,
+ [8] = &clk_sclk_vpll.clk,
+};
+
+static struct clksrc_sources clkset_sclk_audio0 = {
+ .sources = clkset_sclk_audio0_list,
+ .nr_sources = ARRAY_SIZE(clkset_sclk_audio0_list),
+};
+
+static struct clksrc_clk clk_sclk_audio0 = {
+ .clk = {
+ .name = "audio-bus",
+ .id = 0,
+ .enable = exynos4_clksrc_mask_maudio_ctrl,
+ .ctrlbit = (1 << 0),
+ },
+ .sources = &clkset_sclk_audio0,
+ .reg_src = { .reg = S5P_CLKSRC_MAUDIO, .shift = 0, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_MAUDIO, .shift = 0, .size = 4 },
+};
+
+static struct clk *clkset_sclk_audio1_list[] = {
+ [0] = &clk_audiocdclk1,
+ [1] = NULL,
+ [2] = &clk_sclk_hdmi27m,
+ [3] = &clk_sclk_usbphy0,
+ [4] = &clk_sclk_xxti,
+ [5] = &clk_sclk_xusbxti,
+ [6] = &clk_mout_mpll.clk,
+ [7] = &clk_mout_epll.clk,
+ [8] = &clk_sclk_vpll.clk,
+};
+
+static struct clksrc_sources clkset_sclk_audio1 = {
+ .sources = clkset_sclk_audio1_list,
+ .nr_sources = ARRAY_SIZE(clkset_sclk_audio1_list),
+};
+
+static struct clksrc_clk clk_sclk_audio1 = {
+ .clk = {
+ .name = "audio-bus",
+ .id = 1,
+ .enable = exynos4_clksrc_mask_peril1_ctrl,
+ .ctrlbit = (1 << 0),
+ },
+ .sources = &clkset_sclk_audio1,
+ .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 0, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL4, .shift = 4, .size = 8 },
+};
+
+static struct clk *clkset_sclk_audio2_list[] = {
+ [0] = &clk_audiocdclk2,
+ [1] = NULL,
+ [2] = &clk_sclk_hdmi27m,
+ [3] = &clk_sclk_usbphy0,
+ [4] = &clk_sclk_xxti,
+ [5] = &clk_sclk_xusbxti,
+ [6] = &clk_mout_mpll.clk,
+ [7] = &clk_mout_epll.clk,
+ [8] = &clk_sclk_vpll.clk,
+};
+
+static struct clksrc_sources clkset_sclk_audio2 = {
+ .sources = clkset_sclk_audio2_list,
+ .nr_sources = ARRAY_SIZE(clkset_sclk_audio2_list),
+};
+
+static struct clksrc_clk clk_sclk_audio2 = {
+ .clk = {
+ .name = "audio-bus",
+ .id = 2,
+ .enable = exynos4_clksrc_mask_peril1_ctrl,
+ .ctrlbit = (1 << 4),
+ },
+ .sources = &clkset_sclk_audio2,
+ .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 4, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL4, .shift = 16, .size = 4 },
+};
+
static struct clk init_clocks[] = {
{
.name = "uart",
@@ -1079,7 +1217,28 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = (1 << 16),
},
.reg_div = { .reg = S5P_CLKDIV_FSYS3, .shift = 8, .size = 8 },
- }
+ }, {
+ .clk = {
+ .name = "sclk_pcm",
+ .id = 0,
+ .parent = &clk_sclk_audio0.clk,
+ },
+ .reg_div = { .reg = S5P_CLKDIV_MAUDIO, .shift = 4, .size = 8 },
+ }, {
+ .clk = {
+ .name = "sclk_pcm",
+ .id = 1,
+ .parent = &clk_sclk_audio1.clk,
+ },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL4, .shift = 4, .size = 8 },
+ }, {
+ .clk = {
+ .name = "sclk_pcm",
+ .id = 2,
+ .parent = &clk_sclk_audio2.clk,
+ },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL4, .shift = 20, .size = 8 },
+ },
};
/* Clock initialization code */
@@ -1112,6 +1271,9 @@ static struct clksrc_clk *sysclks[] = {
&clk_dout_mmc2,
&clk_dout_mmc3,
&clk_dout_mmc4,
+ &clk_sclk_audio0,
+ &clk_sclk_audio1,
+ &clk_sclk_audio2,
};
static int xtal_rate;
@@ -1191,10 +1353,13 @@ void __init_or_cpufreq exynos4_setup_clocks(void)
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
+
+ clk_audiocdclk0.rate = PCM_EXTCLK0;
+ clk_set_parent(&clk_sclk_audio0.clk, &clk_audiocdclk0);
}
static struct clk *clks[] __initdata = {
- /* Nothing here yet */
+ &clk_audiocdclk0,
};
void __init exynos4_register_clocks(void)
diff --git a/arch/arm/mach-exynos4/cpu.c b/arch/arm/mach-exynos4/cpu.c
index 7930113..620b41f 100644
--- a/arch/arm/mach-exynos4/cpu.c
+++ b/arch/arm/mach-exynos4/cpu.c
@@ -97,6 +97,11 @@ static struct map_desc exynos4_iodesc[] __initdata = {
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_AUDSS,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_AUDSS),
+ .length = SZ_1K,
+ .type = MT_DEVICE,
},
};
diff --git a/arch/arm/mach-exynos4/dev-audio.c b/arch/arm/mach-exynos4/dev-audio.c
index 1eed5f9..383a4aa 100644
--- a/arch/arm/mach-exynos4/dev-audio.c
+++ b/arch/arm/mach-exynos4/dev-audio.c
@@ -187,6 +187,11 @@ static int exynos4_pcm_cfg_gpio(struct platform_device *pdev)
static struct s3c_audio_pdata s3c_pcm_pdata = {
.cfg_gpio = exynos4_pcm_cfg_gpio,
+ .type = {
+ .i2s = {
+ .quirks = QUIRK_NO_DIV,
+ },
+ },
};
static struct resource exynos4_pcm0_resource[] = {
diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h
index 6330b73..063854e 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -30,6 +30,8 @@
#define EXYNOS4_PA_FIMC2 0x11820000
#define EXYNOS4_PA_FIMC3 0x11830000
+#define EXYNOS4_PA_AUDSS 0x03810000
+
#define EXYNOS4_PA_I2S0 0x03830000
#define EXYNOS4_PA_I2S1 0xE3100000
#define EXYNOS4_PA_I2S2 0xE2A00000
@@ -143,6 +145,7 @@
#define S5P_PA_SROMC EXYNOS4_PA_SROMC
#define S5P_PA_SYSCON EXYNOS4_PA_SYSCON
#define S5P_PA_TIMER EXYNOS4_PA_TIMER
+#define S5P_PA_AUDSS EXYNOS4_PA_AUDSS
#define SAMSUNG_PA_KEYPAD EXYNOS4_PA_KEYPAD
diff --git a/arch/arm/mach-exynos4/include/mach/regs-audss.h b/arch/arm/mach-exynos4/include/mach/regs-audss.h
new file mode 100644
index 0000000..23c1d3a
--- /dev/null
+++ b/arch/arm/mach-exynos4/include/mach/regs-audss.h
@@ -0,0 +1,25 @@
+/* arch/arm/mach-exynos4/include/mach/regs-audss.h
+ *
+ * Copyright (c) 2011 Samsung Electronics
+ * http://www.samsung.com
+ *
+ * Exynos4 Audio SubSystem clock register definitions
+ *
+ * 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 __PLAT_REGS_AUDSS_H
+#define __PLAT_REGS_AUDSS_H __FILE__
+
+#define S5P_AUDSSREG(x) (S5P_VA_AUDSS + (x))
+
+#define S5P_CLKGATE_AUDSS S5P_AUDSSREG(0x8)
+
+#define PCM_EXTCLK0 16934400
+
+/* IP Clock Gate 0 Registers */
+#define S5P_AUDSS_CLKGATE_PCMSPECIAL (1<<5)
+
+#endif /* _PLAT_REGS_AUDSS_H */
diff --git a/arch/arm/mach-exynos4/mach-smdkc210.c b/arch/arm/mach-exynos4/mach-smdkc210.c
index e645f7a..ac53e49 100644
--- a/arch/arm/mach-exynos4/mach-smdkc210.c
+++ b/arch/arm/mach-exynos4/mach-smdkc210.c
@@ -142,6 +142,11 @@ static struct platform_device smdkc210_smsc911x = {
},
};
+static struct platform_device smdkc210_pcm_device = {
+ .name = "samsung-smdk-pcm",
+ .id = -1,
+};
+
static struct i2c_board_info i2c_devs1[] __initdata = {
{I2C_BOARD_INFO("wm8994", 0x1a),},
};
@@ -156,6 +161,7 @@ static struct platform_device *smdkc210_devices[] __initdata = {
&s3c_device_wdt,
&exynos4_device_ac97,
&exynos4_device_i2s0,
+ &exynos4_device_pcm0,
&exynos4_device_pd[PD_MFC],
&exynos4_device_pd[PD_G3D],
&exynos4_device_pd[PD_LCD0],
@@ -166,6 +172,7 @@ static struct platform_device *smdkc210_devices[] __initdata = {
&exynos4_device_sysmmu,
&samsung_asoc_dma,
&smdkc210_smsc911x,
+ &smdkc210_pcm_device,
};
static void __init smdkc210_smsc911x_init(void)
diff --git a/arch/arm/mach-exynos4/mach-smdkv310.c b/arch/arm/mach-exynos4/mach-smdkv310.c
index 1526764..7e3ee6c 100644
--- a/arch/arm/mach-exynos4/mach-smdkv310.c
+++ b/arch/arm/mach-exynos4/mach-smdkv310.c
@@ -163,6 +163,11 @@ static struct samsung_keypad_platdata smdkv310_keypad_data __initdata = {
.cols = 8,
};
+static struct platform_device smdkv310_pcm_device = {
+ .name = "samsung-smdk-pcm",
+ .id = -1,
+};
+
static struct i2c_board_info i2c_devs1[] __initdata = {
{I2C_BOARD_INFO("wm8994", 0x1a),},
};
@@ -186,8 +191,10 @@ static struct platform_device *smdkv310_devices[] __initdata = {
&exynos4_device_pd[PD_TV],
&exynos4_device_pd[PD_GPS],
&exynos4_device_sysmmu,
+ &exynos4_device_pcm0,
&samsung_asoc_dma,
&smdkv310_smsc911x,
+ &smdkv310_pcm_device,
};
static void __init smdkv310_smsc911x_init(void)
diff --git a/arch/arm/plat-samsung/include/plat/audio.h b/arch/arm/plat-samsung/include/plat/audio.h
index a0826ed..1310547 100644
--- a/arch/arm/plat-samsung/include/plat/audio.h
+++ b/arch/arm/plat-samsung/include/plat/audio.h
@@ -36,6 +36,8 @@ struct samsung_i2s {
*/
#define QUIRK_NO_MUXPSR (1 << 2)
#define QUIRK_NEED_RSTCLR (1 << 3)
+/* If the PCM block has no internal prescalar or MUX */
+#define QUIRK_NO_DIV (1 << 4)
/* Quirks of the I2S controller */
u32 quirks;
--
1.7.1
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