board: stm32: switch to DM STM32 timer

Use available DM stm32_timer driver instead of dedicated
mach-stm32/stm32fx/timer.c.

Remove all defines or files previously used for timer usage in
arch/arm/include/asm/arch-stm32fx and in arch/arm/mach-stm32/stm32fx

Enable DM STM32_TIMER for STM32F4/F7 and H7.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

6 files changed, 7 insertions, 249 deletions

diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig
index f79b1a2c70..13532843fb 100644
--- a/arch/arm/mach-stm32/Kconfig
+++ b/arch/arm/mach-stm32/Kconfig
@@ -13,6 +13,8 @@ config STM32F4
 	select STM32_RCC
 	select STM32_RESET
 	select STM32_SERIAL
+	select STM32_TIMER
+	select TIMER
 
 config STM32F7
 	bool "stm32f7 family"
@@ -27,6 +29,8 @@ config STM32F7
 	select STM32_RCC
 	select STM32_RESET
 	select STM32_SERIAL
+	select STM32_TIMER
+	select TIMER
 	select SUPPORT_SPL
 	select SPL
 	select SPL_BOARD_INIT
@@ -46,6 +50,7 @@ config STM32F7
 	select SPL_RAM
 	select SPL_SERIAL_SUPPORT
 	select SPL_SYS_MALLOC_SIMPLE
+	select SPL_TIMER
 	select SPL_XIP_SUPPORT
 
 config STM32H7
@@ -62,7 +67,9 @@ config STM32H7
 	select STM32_RCC
 	select STM32_RESET
 	select STM32_SERIAL
+	select STM32_TIMER
 	select SYSCON
+	select TIMER
 
 source "arch/arm/mach-stm32/stm32f4/Kconfig"
 source "arch/arm/mach-stm32/stm32f7/Kconfig"
diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile
index c2806af69b..d0f2a96b9f 100644
--- a/arch/arm/mach-stm32/Makefile
+++ b/arch/arm/mach-stm32/Makefile
@@ -5,5 +5,3 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 obj-y += soc.o
-obj-$(CONFIG_STM32F4) += stm32f4/
-obj-$(CONFIG_STM32F7) += stm32f7/
diff --git a/arch/arm/mach-stm32/stm32f4/Makefile b/arch/arm/mach-stm32/stm32f4/Makefile
deleted file mode 100644
index 86c81bbe44..0000000000
--- a/arch/arm/mach-stm32/stm32f4/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# (C) Copyright 2000-2006
-# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# (C) Copyright 2015
-# Kamil Lulko, <kamil.lulko@gmail.com>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
-
-obj-y += timer.o
diff --git a/arch/arm/mach-stm32/stm32f4/timer.c b/arch/arm/mach-stm32/stm32f4/timer.c
deleted file mode 100644
index 00b1d4abda..0000000000
--- a/arch/arm/mach-stm32/stm32f4/timer.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * (C) Copyright 2015
- * Kamil Lulko, <kamil.lulko@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <stm32_rcc.h>
-#include <asm/io.h>
-#include <asm/armv7m.h>
-#include <asm/arch/stm32.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define STM32_TIM2_BASE	(STM32_APB1PERIPH_BASE + 0x0000)
-
-#define RCC_APB1ENR_TIM2EN	(1 << 0)
-
-struct stm32_tim2_5 {
-	u32 cr1;
-	u32 cr2;
-	u32 smcr;
-	u32 dier;
-	u32 sr;
-	u32 egr;
-	u32 ccmr1;
-	u32 ccmr2;
-	u32 ccer;
-	u32 cnt;
-	u32 psc;
-	u32 arr;
-	u32 reserved1;
-	u32 ccr1;
-	u32 ccr2;
-	u32 ccr3;
-	u32 ccr4;
-	u32 reserved2;
-	u32 dcr;
-	u32 dmar;
-	u32 or;
-};
-
-#define TIM_CR1_CEN	(1 << 0)
-
-#define TIM_EGR_UG	(1 << 0)
-
-int timer_init(void)
-{
-	struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
-
-	setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_TIM2EN);
-
-	writel(((CONFIG_SYS_CLK_FREQ / 2) / CONFIG_SYS_HZ_CLOCK) - 1,
-	       &tim->psc);
-
-	writel(0xFFFFFFFF, &tim->arr);
-	writel(TIM_CR1_CEN, &tim->cr1);
-	setbits_le32(&tim->egr, TIM_EGR_UG);
-
-	gd->arch.tbl = 0;
-	gd->arch.tbu = 0;
-	gd->arch.lastinc = 0;
-
-	return 0;
-}
-
-ulong get_timer(ulong base)
-{
-	return (get_ticks() / (CONFIG_SYS_HZ_CLOCK / CONFIG_SYS_HZ)) - base;
-}
-
-unsigned long long get_ticks(void)
-{
-	struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
-	u32 now;
-
-	now = readl(&tim->cnt);
-
-	if (now >= gd->arch.lastinc)
-		gd->arch.tbl += (now - gd->arch.lastinc);
-	else
-		gd->arch.tbl += (0xFFFFFFFF - gd->arch.lastinc) + now;
-
-	gd->arch.lastinc = now;
-
-	return gd->arch.tbl;
-}
-
-void reset_timer(void)
-{
-	struct stm32_tim2_5 *tim = (struct stm32_tim2_5 *)STM32_TIM2_BASE;
-
-	gd->arch.lastinc = readl(&tim->cnt);
-	gd->arch.tbl = 0;
-}
-
-/* delay x useconds */
-void __udelay(ulong usec)
-{
-	unsigned long long start;
-
-	start = get_ticks();		/* get current timestamp */
-	while ((get_ticks() - start) < usec)
-		;			/* loop till time has passed */
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk(void)
-{
-	return CONFIG_SYS_HZ_CLOCK;
-}
diff --git a/arch/arm/mach-stm32/stm32f7/Makefile b/arch/arm/mach-stm32/stm32f7/Makefile
deleted file mode 100644
index 8132c13234..0000000000
--- a/arch/arm/mach-stm32/stm32f7/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Copyright (C) 2016, STMicroelectronics - All Rights Reserved
-# Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
-
-obj-y += timer.o
diff --git a/arch/arm/mach-stm32/stm32f7/timer.c b/arch/arm/mach-stm32/stm32f7/timer.c
deleted file mode 100644
index 69d37a7c70..0000000000
--- a/arch/arm/mach-stm32/stm32f7/timer.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
- * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <stm32_rcc.h>
-#include <asm/io.h>
-#include <asm/arch/stm32.h>
-#include <asm/arch/stm32_defs.h>
-#include <asm/arch/gpt.h>
-
-#define READ_TIMER()	(readl(&gpt1_regs_ptr->cnt) & GPT_FREE_RUNNING)
-#define GPT_RESOLUTION	(CONFIG_SYS_HZ_CLOCK/CONFIG_STM32_HZ)
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define timestamp gd->arch.tbl
-#define lastdec gd->arch.lastinc
-
-int timer_init(void)
-{
-	/* Timer2 clock configuration */
-	clock_setup(TIMER2_CLOCK_CFG);
-	/* Stop the timer */
-	writel(readl(&gpt1_regs_ptr->cr1) & ~GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
-
-	writel((CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ_CLOCK) - 1,
-						&gpt1_regs_ptr->psc);
-
-	/* Configure timer for auto-reload */
-	writel(readl(&gpt1_regs_ptr->cr1) | GPT_MODE_AUTO_RELOAD,
-						&gpt1_regs_ptr->cr1);
-
-	/* load value for free running */
-	writel(GPT_FREE_RUNNING, &gpt1_regs_ptr->arr);
-
-	/* start timer */
-	writel(readl(&gpt1_regs_ptr->cr1) | GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
-
-	writel(readl(&gpt1_regs_ptr->egr) | TIM_EGR_UG, &gpt1_regs_ptr->egr);
-
-	/* Reset the timer */
-	lastdec = READ_TIMER();
-	timestamp = 0;
-
-	return 0;
-}
-
-/*
- * timer without interrupts
- */
-ulong get_timer(ulong base)
-{
-	return (get_timer_masked() / GPT_RESOLUTION) - base;
-}
-
-void __udelay(unsigned long usec)
-{
-	ulong tmo;
-	ulong start = get_timer_masked();
-	ulong tenudelcnt = CONFIG_SYS_HZ_CLOCK / (1000 * 100);
-	ulong rndoff;
-
-	rndoff = (usec % 10) ? 1 : 0;
-
-	/* tenudelcnt timer tick gives 10 microsecconds delay */
-	tmo = ((usec / 10) + rndoff) * tenudelcnt;
-
-	while ((ulong) (get_timer_masked() - start) < tmo)
-		;
-}
-
-ulong get_timer_masked(void)
-{
-	ulong now = READ_TIMER();
-
-	if (now >= lastdec) {
-		/* normal mode */
-		timestamp += now - lastdec;
-	} else {
-		/* we have an overflow ... */
-		timestamp += now + GPT_FREE_RUNNING - lastdec;
-	}
-	lastdec = now;
-
-	return timestamp;
-}
-
-void udelay_masked(unsigned long usec)
-{
-	return udelay(usec);
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
-	return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk(void)
-{
-	return CONFIG_STM32_HZ;
-}