openwrtv3/target/linux/imx6/patches-3.12/0004-ARM-imx6q-use-common-soc-revision-helpers.patch

From 3f75978b3742157853618c5c6dd4a5f49aa950b1 Mon Sep 17 00:00:00 2001
From: Shawn Guo <shawn.guo@linaro.org>
Date: Tue, 13 Aug 2013 14:10:29 +0800
Subject: [PATCH] ARM: imx6q: use common soc revision helpers

It calls imx_set_soc_revision() to set up soc revision in
imx6q_init_revision(), and replaces all the occurrences of
imx6q_revision() with common helper imx_get_soc_revision().

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 arch/arm/mach-imx/clk-imx6q.c  |  5 +++--
 arch/arm/mach-imx/common.h     |  1 -
 arch/arm/mach-imx/mach-imx6q.c | 13 ++++---------
 3 files changed, 7 insertions(+), 12 deletions(-)

--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -300,7 +300,7 @@ static void __init imx6q_clocks_init(str
 	WARN_ON(!base);
 
 	/* Audio/video PLL post dividers do not work on i.MX6q revision 1.0 */
-	if (cpu_is_imx6q() && imx6q_revision() == IMX_CHIP_REVISION_1_0) {
+	if (cpu_is_imx6q() && imx_get_soc_revision() == IMX_CHIP_REVISION_1_0) {
 		post_div_table[1].div = 1;
 		post_div_table[2].div = 1;
 		video_div_table[1].div = 1;
@@ -574,7 +574,8 @@ static void __init imx6q_clocks_init(str
 	clk_register_clkdev(clk[pll4_post_div], "pll4_post_div", NULL);
 	clk_register_clkdev(clk[pll4_audio], "pll4_audio", NULL);
 
-	if ((imx6q_revision() != IMX_CHIP_REVISION_1_0) || cpu_is_imx6dl()) {
+	if ((imx_get_soc_revision() != IMX_CHIP_REVISION_1_0) ||
+	    cpu_is_imx6dl()) {
 		clk_set_parent(clk[ldb_di0_sel], clk[pll5_video_div]);
 		clk_set_parent(clk[ldb_di1_sel], clk[pll5_video_div]);
 	}
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -77,7 +77,6 @@ extern void mxc_restart(enum reboot_mode
 extern void mxc_arch_reset_init(void __iomem *);
 extern void mxc_arch_reset_init_dt(void);
 extern int mx53_revision(void);
-extern int imx6q_revision(void);
 extern int mx53_display_revision(void);
 extern void imx_set_aips(void __iomem *);
 extern int mxc_device_init(void);
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -40,16 +40,10 @@
 #include "cpuidle.h"
 #include "hardware.h"
 
-static u32 chip_revision;
-
-int imx6q_revision(void)
-{
-	return chip_revision;
-}
-
 static void __init imx6q_init_revision(void)
 {
 	u32 rev = imx_anatop_get_digprog();
+	u32 chip_revision;
 
 	switch (rev & 0xff) {
 	case 0:
@@ -66,6 +60,7 @@ static void __init imx6q_init_revision(v
 	}
 
 	mxc_set_cpu_type(rev >> 16 & 0xff);
+	imx_set_soc_revision(chip_revision);
 }
 
 static void imx6q_restart(enum reboot_mode mode, const char *cmd)
@@ -269,7 +264,7 @@ static void __init imx6q_init_late(void)
 	 * WAIT mode is broken on TO 1.0 and 1.1, so there is no point
 	 * to run cpuidle on them.
 	 */
-	if (imx6q_revision() > IMX_CHIP_REVISION_1_1)
+	if (imx_get_soc_revision() > IMX_CHIP_REVISION_1_1)
 		imx6q_cpuidle_init();
 
 	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) {
@@ -298,7 +293,7 @@ static void __init imx6q_timer_init(void
 	of_clk_init(NULL);
 	clocksource_of_init();
 	imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q",
-			      imx6q_revision());
+			      imx_get_soc_revision());
 }
 
 static const char *imx6q_dt_compat[] __initdata = {