diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.1/163-clk-sunxi-mod1-clock.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.1/163-clk-sunxi-mod1-clock.patch | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.1/163-clk-sunxi-mod1-clock.patch b/target/linux/sunxi/patches-4.1/163-clk-sunxi-mod1-clock.patch new file mode 100644 index 0000000000..87ec3feb2a --- /dev/null +++ b/target/linux/sunxi/patches-4.1/163-clk-sunxi-mod1-clock.patch @@ -0,0 +1,107 @@ +From 7fbbca069587b7f467e76f583ad640977de1a4ff Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar> +Date: Fri, 18 Jul 2014 15:28:02 -0300 +Subject: [PATCH] clk: sunxi: mod1 clock support +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +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 López <emilio@elopez.com.ar> +Signed-off-by: Hans de Goede <hdegoede@redhat.com> +--- + drivers/clk/sunxi/Makefile | 1 + + drivers/clk/sunxi/clk-a10-mod1.c | 69 ++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 70 insertions(+) + create mode 100644 drivers/clk/sunxi/clk-a10-mod1.c + +diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile +index 6fa845e..960eeab 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 0000000..1357641 +--- /dev/null ++++ b/drivers/clk/sunxi/clk-a10-mod1.c +@@ -0,0 +1,69 @@ ++/* ++ * Copyright 2013 Emilio López ++ * ++ * Emilio López <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; ++ ++ mux = kzalloc(sizeof(*mux), GFP_KERNEL); ++ gate = kzalloc(sizeof(*gate), GFP_KERNEL); ++ if (!mux || !gate) { ++ kfree(mux); ++ kfree(gate); ++ return; ++ } ++ ++ of_property_read_string(node, "clock-output-names", &clk_name); ++ reg = of_iomap(node, 0); ++ ++ while (i < SUN4I_MOD1_MAX_PARENTS && ++ (parents[i] = of_clk_get_parent_name(node, i)) != NULL) ++ i++; ++ ++ gate->reg = reg; ++ gate->bit_idx = SUN4I_MOD1_ENABLE; ++ gate->lock = &mod1_lock; ++ mux->reg = reg; ++ mux->shift = SUN4I_MOD1_MUX; ++ mux->mask = BIT(SUN4I_MOD1_MUX_WIDTH) - 1; ++ mux->lock = &mod1_lock; ++ ++ clk = clk_register_composite(NULL, clk_name, parents, i, ++ &mux->hw, &clk_mux_ops, ++ NULL, NULL, ++ &gate->hw, &clk_gate_ops, 0); ++ if (!IS_ERR(clk)) ++ of_clk_add_provider(node, of_clk_src_simple_get, clk); ++} ++CLK_OF_DECLARE(sun4i_mod1, "allwinner,sun4i-a10-mod1-clk", sun4i_mod1_clk_setup); |