Thread (26 messages) 26 messages, 2 authors, 2015-05-19

[PATCH 5/8] clk: sunxi: mod1 clock support

From: Maxime Ripard <hidden>
Date: 2015-05-15 07:41:07
Also in: linux-clk

On Thu, May 14, 2015 at 09:43:19PM +0800, Chen-Yu Tsai wrote:
On Sat, May 2, 2015 at 7:24 PM, Maxime Ripard
[off-list ref] wrote:
quoted
From: Emilio L?pez <emilio@elopez.com.ar>

The module 1 type of clocks consist of a gate and a mux and are used on
the audio blocks to mux and gate the PLL2 outputs for AC97, IIS or
SPDIF. This commit adds support for them on the sunxi clock driver.

Signed-off-by: Emilio L?pez <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <redacted>
Signed-off-by: Maxime Ripard <redacted>
---
 drivers/clk/sunxi/Makefile       |  1 +
 drivers/clk/sunxi/clk-a10-mod1.c | 85 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 drivers/clk/sunxi/clk-a10-mod1.c
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index 6fa845e13067..960eeabc375f 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -5,6 +5,7 @@
 obj-y += clk-sunxi.o clk-factors.o
 obj-y += clk-a10-codec.o
 obj-y += clk-a10-hosc.o
+obj-y += clk-a10-mod1.o
 obj-y += clk-a10-pll2.o
 obj-y += clk-a20-gmac.o
 obj-y += clk-mod0.o
diff --git a/drivers/clk/sunxi/clk-a10-mod1.c b/drivers/clk/sunxi/clk-a10-mod1.c
new file mode 100644
index 000000000000..6fc1b7a6de00
--- /dev/null
+++ b/drivers/clk/sunxi/clk-a10-mod1.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2013 Emilio L?pez
+ *
+ * Emilio L?pez <emilio@elopez.com.ar>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+static DEFINE_SPINLOCK(mod1_lock);
+
+#define SUN4I_MOD1_ENABLE      31
+#define SUN4I_MOD1_MUX         16
+#define SUN4I_MOD1_MUX_WIDTH   2
+#define SUN4I_MOD1_MAX_PARENTS 4
+
+static void __init sun4i_mod1_clk_setup(struct device_node *node)
+{
+       struct clk *clk;
+       struct clk_mux *mux;
+       struct clk_gate *gate;
+       const char *parents[4];
+       const char *clk_name = node->name;
+       void __iomem *reg;
+       int i = 0;
+
+       reg = of_io_request_and_map(node, 0, of_node_full_name(node));
+       if (IS_ERR(reg))
+               return;
+
+       mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+       if (!mux)
+               goto err_unmap;
+
+       gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+       if (!gate)
+               goto err_free_mux;
+
+       of_property_read_string(node, "clock-output-names", &clk_name);
+       reg = of_iomap(node, 0);
Is this left over from some change?
Yes :/

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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