linux-kernel - [PATCH 4/4] clk: meson: meson8b: add the cts

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Date:   Mon, 20 May 2019 22:03:19 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     narmstrong@...libre.com, jbrunet@...libre.com,
        linux-amlogic@...ts.infradead.org
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH 4/4] clk: meson: meson8b: add the cts_i958 clock

Add the cts_i958 clock to control the clock source of the spdif output
block. It is used to select whether the clock source of the spdif output
is cts_amclk (when data are taken from i2s buffer) or the cts_mclk_i958
(when data are taken from the spdif buffer). The setup for this clock is
identical to GXBB, so this ports commit 7eaa44f6207fb6 ("clk: meson:
gxbb: add cts_i958 clock") to the Meson8/Meson8b/Meson8m2 clock driver.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 drivers/clk/meson/meson8b.c | 24 ++++++++++++++++++++++++
 drivers/clk/meson/meson8b.h |  2 +-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index 13ce1783eead..537219fa573e 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -2259,6 +2259,26 @@ static struct clk_regmap meson8b_cts_mclk_i958 = {
 	},
 };
 
+static struct clk_regmap meson8b_cts_i958 = {
+	.data = &(struct clk_regmap_mux_data){
+		.offset = HHI_AUD_CLK_CNTL2,
+		.mask = 0x1,
+		.shift = 27,
+		},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_i958",
+		.ops = &clk_regmap_mux_ops,
+		.parent_names = (const char *[]){ "cts_amclk",
+						  "cts_mclk_i958" },
+		.num_parents = 2,
+		/*
+		 * The parent is specific to origin of the audio data. Let the
+		 * consumer choose the appropriate parent.
+		 */
+		.flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+	},
+};
+
 /* Everything Else (EE) domain gates */
 
 static MESON_GATE(meson8b_ddr, HHI_GCLK_MPEG0, 0);
@@ -2544,6 +2564,7 @@ static struct clk_hw_onecell_data meson8_hw_onecell_data = {
 		[CLKID_CTS_MCLK_I958_SEL]   = &meson8b_cts_mclk_i958_sel.hw,
 		[CLKID_CTS_MCLK_I958_DIV]   = &meson8b_cts_mclk_i958_div.hw,
 		[CLKID_CTS_MCLK_I958]	    = &meson8b_cts_mclk_i958.hw,
+		[CLKID_CTS_I958]	    = &meson8b_cts_i958.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -2759,6 +2780,7 @@ static struct clk_hw_onecell_data meson8b_hw_onecell_data = {
 		[CLKID_CTS_MCLK_I958_SEL]   = &meson8b_cts_mclk_i958_sel.hw,
 		[CLKID_CTS_MCLK_I958_DIV]   = &meson8b_cts_mclk_i958_div.hw,
 		[CLKID_CTS_MCLK_I958]	    = &meson8b_cts_mclk_i958.hw,
+		[CLKID_CTS_I958]	    = &meson8b_cts_i958.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -2976,6 +2998,7 @@ static struct clk_hw_onecell_data meson8m2_hw_onecell_data = {
 		[CLKID_CTS_MCLK_I958_SEL]   = &meson8b_cts_mclk_i958_sel.hw,
 		[CLKID_CTS_MCLK_I958_DIV]   = &meson8b_cts_mclk_i958_div.hw,
 		[CLKID_CTS_MCLK_I958]	    = &meson8b_cts_mclk_i958.hw,
+		[CLKID_CTS_I958]	    = &meson8b_cts_i958.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -3171,6 +3194,7 @@ static struct clk_regmap *const meson8b_clk_regmaps[] = {
 	&meson8b_cts_mclk_i958_sel,
 	&meson8b_cts_mclk_i958_div,
 	&meson8b_cts_mclk_i958,
+	&meson8b_cts_i958,
 };
 
 static const struct meson8b_clk_reset_line {
diff --git a/drivers/clk/meson/meson8b.h b/drivers/clk/meson/meson8b.h
index c3787418088e..c889fbeec30f 100644
--- a/drivers/clk/meson/meson8b.h
+++ b/drivers/clk/meson/meson8b.h
@@ -178,7 +178,7 @@
 #define CLKID_CTS_MCLK_I958_SEL	210
 #define CLKID_CTS_MCLK_I958_DIV	211
 
-#define CLK_NR_CLKS		213
+#define CLK_NR_CLKS		214
 
 /*
  * include the CLKID and RESETID that have
-- 
2.21.0