Merge branch 'master' of git://www.denx.de/git/u-boot-imx

[u-boot] / arch / arm / cpu / arm926ejs / mxs / spl_lradc_init.c

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
index c1df81de2bd54d77672e718d1b45fe8b0af52c5f..96bd32f8adac9106584dcdb04d7ac251ed8368a0 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c
@@ -4,23 +4,7 @@
  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  * on behalf of DENX Software Engineering GmbH
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -28,12 +12,14 @@
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 
-#include "mx28_init.h"
+#include "mxs_init.h"
 
-void mx28_lradc_init(void)
+void mxs_lradc_init(void)
 {
        struct mxs_lradc_regs *regs = (struct mxs_lradc_regs *)MXS_LRADC_BASE;
 
+       debug("SPL: Initialisating LRADC\n");
+
        writel(LRADC_CTRL0_SFTRST, &regs->hw_lradc_ctrl0_clr);
        writel(LRADC_CTRL0_CLKGATE, &regs->hw_lradc_ctrl0_clr);
        writel(LRADC_CTRL0_ONCHIP_GROUNDREF, &regs->hw_lradc_ctrl0_clr);
@@ -49,13 +35,19 @@ void mx28_lradc_init(void)
                        LRADC_CTRL4_LRADC6SELECT_CHANNEL10);
 }
 
-void mx28_lradc_enable_batt_measurement(void)
+void mxs_lradc_enable_batt_measurement(void)
 {
        struct mxs_lradc_regs *regs = (struct mxs_lradc_regs *)MXS_LRADC_BASE;
 
+       debug("SPL: Enabling LRADC battery measurement\n");
+
        /* Check if the channel is present at all. */
-       if (!(readl(&regs->hw_lradc_status) & LRADC_STATUS_CHANNEL7_PRESENT))
+       if (!(readl(&regs->hw_lradc_status) & LRADC_STATUS_CHANNEL7_PRESENT)) {
+               debug("SPL: LRADC channel 7 is not present - aborting\n");
                return;
+       }
+
+       debug("SPL: LRADC channel 7 is present - configuring\n");
 
        writel(LRADC_CTRL1_LRADC7_IRQ_EN, &regs->hw_lradc_ctrl1_clr);
        writel(LRADC_CTRL1_LRADC7_IRQ, &regs->hw_lradc_ctrl1_clr);
@@ -81,6 +73,7 @@ void mx28_lradc_enable_batt_measurement(void)
                100, &regs->hw_lradc_delay3);
 
        writel(0xffffffff, &regs->hw_lradc_ch7_clr);
-
        writel(LRADC_DELAY_KICK, &regs->hw_lradc_delay3_set);
+
+       debug("SPL: LRADC channel 7 configuration complete\n");
 }