linux-kernel - [PATCH 03/10] ARM: omap2: remove unused omap_hwmod

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Message-Id: <20221024153814.254652-4-arnd@kernel.org>
Date:   Mon, 24 Oct 2022 17:38:07 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 03/10] ARM: omap2: remove unused omap_hwmod_reset.c

From: Arnd Bergmann <arnd@...db.de>

Since commit 90aa4ed5a43f ("ARM: OMAP2+: Drop legacy platform
data for dra7 rtcss"), this is not used any more and can be
removed.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/mach-omap2/Makefile           |  2 +-
 arch/arm/mach-omap2/omap_hwmod.h       |  7 --
 arch/arm/mach-omap2/omap_hwmod_reset.c | 98 --------------------------
 3 files changed, 1 insertion(+), 106 deletions(-)
 delete mode 100644 arch/arm/mach-omap2/omap_hwmod_reset.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 2feb9f6630af..43b44e0858c1 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -7,7 +7,7 @@
 obj-y := id.o io.o control.o devices.o fb.o pm.o \
 	 common.o dma.o omap-headsmp.o sram.o
 
-hwmod-common				= omap_hwmod.o omap_hwmod_reset.o \
+hwmod-common				= omap_hwmod.o \
 					  omap_hwmod_common_data.o \
 					  omap_hwmod_common_ipblock_data.o \
 					  omap_device.o display.o hdq1w.o \
diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
index 6962a8d267e7..1bb42f3d2e83 100644
--- a/arch/arm/mach-omap2/omap_hwmod.h
+++ b/arch/arm/mach-omap2/omap_hwmod.h
@@ -669,13 +669,6 @@ omap_hwmod_for_each_by_class(const char *classname,
 }
 #endif	/* CONFIG_OMAP_HWMOD */
 
-/*
- *
- */
-
-void omap_hwmod_rtc_unlock(struct omap_hwmod *oh);
-void omap_hwmod_rtc_lock(struct omap_hwmod *oh);
-
 /*
  * Chip variant-specific hwmod init routines - XXX should be converted
  * to use initcalls once the initial boot ordering is straightened out
diff --git a/arch/arm/mach-omap2/omap_hwmod_reset.c b/arch/arm/mach-omap2/omap_hwmod_reset.c
deleted file mode 100644
index 143623bb056d..000000000000
--- a/arch/arm/mach-omap2/omap_hwmod_reset.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * OMAP IP block custom reset and preprogramming stubs
- *
- * Copyright (C) 2012 Texas Instruments, Inc.
- * Paul Walmsley
- *
- * A small number of IP blocks need custom reset and preprogramming
- * functions.  The stubs in this file provide a standard way for the
- * hwmod code to call these functions, which are to be located under
- * drivers/.
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; 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., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-
-#include "omap_hwmod.h"
-#include "common.h"
-
-#define OMAP_RTC_STATUS_REG	0x44
-#define OMAP_RTC_KICK0_REG	0x6c
-#define OMAP_RTC_KICK1_REG	0x70
-
-#define OMAP_RTC_KICK0_VALUE	0x83E70B13
-#define OMAP_RTC_KICK1_VALUE	0x95A4F1E0
-#define OMAP_RTC_STATUS_BUSY	BIT(0)
-#define OMAP_RTC_MAX_READY_TIME	50
-
-/**
- * omap_rtc_wait_not_busy - Wait for the RTC BUSY flag
- * @oh: struct omap_hwmod *
- *
- * For updating certain RTC registers, the MPU must wait
- * for the BUSY status in OMAP_RTC_STATUS_REG to become zero.
- * Once the BUSY status is zero, there is a 15 microseconds access
- * period in which the MPU can program.
- */
-static void omap_rtc_wait_not_busy(struct omap_hwmod *oh)
-{
-	int i;
-
-	/* BUSY may stay active for 1/32768 second (~30 usec) */
-	omap_test_timeout(omap_hwmod_read(oh, OMAP_RTC_STATUS_REG)
-			  & OMAP_RTC_STATUS_BUSY, OMAP_RTC_MAX_READY_TIME, i);
-	/* now we have ~15 microseconds to read/write various registers */
-}
-
-/**
- * omap_hwmod_rtc_unlock - Unlock the Kicker mechanism.
- * @oh: struct omap_hwmod *
- *
- * RTC IP have kicker feature. This prevents spurious writes to its registers.
- * In order to write into any of the RTC registers, KICK values has te be
- * written in respective KICK registers. This is needed for hwmod to write into
- * sysconfig register.
- */
-void omap_hwmod_rtc_unlock(struct omap_hwmod *oh)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	omap_rtc_wait_not_busy(oh);
-	omap_hwmod_write(OMAP_RTC_KICK0_VALUE, oh, OMAP_RTC_KICK0_REG);
-	omap_hwmod_write(OMAP_RTC_KICK1_VALUE, oh, OMAP_RTC_KICK1_REG);
-	local_irq_restore(flags);
-}
-
-/**
- * omap_hwmod_rtc_lock - Lock the Kicker mechanism.
- * @oh: struct omap_hwmod *
- *
- * RTC IP have kicker feature. This prevents spurious writes to its registers.
- * Once the RTC registers are written, KICK mechanism needs to be locked,
- * in order to prevent any spurious writes. This function locks back the RTC
- * registers once hwmod completes its write into sysconfig register.
- */
-void omap_hwmod_rtc_lock(struct omap_hwmod *oh)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	omap_rtc_wait_not_busy(oh);
-	omap_hwmod_write(0x0, oh, OMAP_RTC_KICK0_REG);
-	omap_hwmod_write(0x0, oh, OMAP_RTC_KICK1_REG);
-	local_irq_restore(flags);
-}
-- 
2.29.2