linux-kernel - [PATCH RFC 3/5] ARM: samsung: add clock setup for FIMC and FIMD

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Date:	Mon, 26 Aug 2013 13:38:32 +0200
From:	Mateusz Krawczuk <m.krawczuk@...tner.samsung.com>
To:	kgene.kim@...sung.com
Cc:	kyungmin.park@...sung.com, t.figa@...sung.com,
	tomasz.figa@...il.com, rob.herring@...xeda.com, pawel.moll@....com,
	mark.rutland@....com, swarren@...dotorg.org,
	ian.campbell@...rix.com, rob@...dley.net, mturquette@...aro.org,
	thomas.abraham@...aro.org, t.stanislaws@...sung.com,
	m.chehab@...sung.com, s.nawrocki@...sung.com,
	m.szyprowski@...ung.com, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	Mateusz Krawczuk <m.krawczuk@...tner.samsung.com>
Subject: [PATCH RFC 3/5] ARM: samsung: add clock setup for FIMC and FIMD

This patch adds code that sets correct parents and rates for clocks
used by FIMC and FIMD on Goni board.

Signed-off-by: Mateusz Krawczuk <m.krawczuk@...tner.samsung.com>
---
 arch/arm/mach-s5pv210/mach-goni.c | 48 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index e5cd9fb..309b5ad 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -55,6 +55,7 @@
 #include <media/s5p_fimc.h>
 #include <media/noon010pc30.h>
 
+#include <linux/clk.h>
 #include "common.h"
 
 /* Following are default values for UCON, ULCON and UFCON UART registers */
@@ -195,6 +196,49 @@ static struct platform_device goni_spi_gpio = {
 	},
 };
 
+static void set_fimd_clock(void)
+{
+	struct clk *lcd_clk, *parent_clk;
+
+	lcd_clk = clk_get(NULL, "sclk_fimd");
+	parent_clk = clk_get(NULL, "mout_mpll");
+	clk_set_parent(lcd_clk, parent_clk);
+	clk_set_rate(lcd_clk, clk_get_rate(parent_clk)/3);
+
+	clk_put(parent_clk);
+	clk_put(lcd_clk);
+}
+
+static void set_fimc_clock(void)
+{
+	struct clk *cam0_clk, *cam1_clk, *fimc2_clk, *fimc1_clk,
+			*fimc0_clk, *parent_clk, *vpll_clk, *csis_clk;
+
+	parent_clk = clk_get(NULL, "mout_mpll");
+	vpll_clk = clk_get(NULL, "mout_vpll");
+	cam0_clk = clk_get(NULL, "mout_cam0");
+	cam1_clk = clk_get(NULL, "mout_cam1");
+	fimc2_clk = clk_get(NULL, "mout_fimc2");
+	fimc1_clk = clk_get(NULL, "mout_fimc1");
+	fimc0_clk = clk_get(NULL, "mout_fimc0");
+	csis_clk = clk_get(NULL, "mout_csis");
+
+	clk_set_parent(cam0_clk, vpll_clk);
+	clk_set_parent(cam1_clk, vpll_clk);
+	clk_set_parent(fimc2_clk, parent_clk);
+	clk_set_parent(fimc1_clk, parent_clk);
+	clk_set_parent(fimc0_clk, parent_clk);
+	clk_set_parent(csis_clk, parent_clk);
+
+	clk_put(parent_clk);
+	clk_put(vpll_clk);
+	clk_put(cam0_clk);
+	clk_put(cam1_clk);
+	clk_put(fimc2_clk);
+	clk_put(fimc1_clk);
+	clk_put(fimc0_clk);
+}
+
 /* KEYPAD */
 static uint32_t keymap[] __initdata = {
 	/* KEY(row, col, keycode) */
@@ -931,6 +975,10 @@ static void __init goni_machine_init(void)
 	s3c_i2c2_set_platdata(&i2c2_data);
 	i2c_register_board_info(2, i2c2_devs, ARRAY_SIZE(i2c2_devs));
 
+	/* FIMD AND FIMC set clock config */
+	set_fimd_clock();
+	set_fimc_clock();
+
 	/* PMIC */
 	goni_pmic_init();
 	i2c_register_board_info(AP_I2C_GPIO_PMIC_BUS_4, i2c_gpio_pmic_devs,
-- 
1.8.1.2

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