Commit a832eb20 authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge tag 'davinci-for-v5.6/soc' of...

Merge tag 'davinci-for-v5.6/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into arm/late

DaVinci SoC updates for v5.6 include migrating DM365 SoC to use
drivers/clocksource based driver for timer. This leads to removal
of machine specific timer driver.

There are two patches adding missing fixed regulators for audio codecs
on DM365 and DM644x EVMs.

* tag 'davinci-for-v5.6/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: dm644x-evm: Add Fixed regulators needed for tlv320aic33
  ARM: davinci: dm365-evm: Add Fixed regulators needed for tlv320aic3101
  ARM: davinci: remove legacy timer support
  ARM: davinci: dm365: switch to using the clocksource driver
  clocksource: davinci: only enable clockevents once tim34 is initialized

Link: https://lore.kernel.org/r/043eb5b2-a302-4de6-a3e8-8238e49483b1@ti.com/

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parents 19d52e94 5e06d196
......@@ -7,8 +7,7 @@
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
# Common objects
obj-y := time.o serial.o usb.o \
common.o sram.o
obj-y := serial.o usb.o common.o sram.o
obj-$(CONFIG_DAVINCI_MUX) += mux.o
......
......@@ -30,6 +30,8 @@
#include <linux/spi/eeprom.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/platform_data/ti-aemif.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
......@@ -245,6 +247,19 @@ static struct davinci_i2c_platform_data i2c_pdata = {
.bus_delay = 0 /* usec */,
};
/* Fixed regulator support */
static struct regulator_consumer_supply fixed_supplies_3_3v[] = {
/* Baseboard 3.3V: 5V -> TPS767D301 -> 3.3V */
REGULATOR_SUPPLY("AVDD", "1-0018"),
REGULATOR_SUPPLY("DRVDD", "1-0018"),
REGULATOR_SUPPLY("IOVDD", "1-0018"),
};
static struct regulator_consumer_supply fixed_supplies_1_8v[] = {
/* Baseboard 1.8V: 5V -> TPS767D301 -> 1.8V */
REGULATOR_SUPPLY("DVDD", "1-0018"),
};
static int dm365evm_keyscan_enable(struct device *dev)
{
return davinci_cfg_reg(DM365_KEYSCAN);
......@@ -800,6 +815,11 @@ static __init void dm365_evm_init(void)
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
regulator_register_always_on(0, "fixed-dummy", fixed_supplies_1_8v,
ARRAY_SIZE(fixed_supplies_1_8v), 1800000);
regulator_register_always_on(1, "fixed-dummy", fixed_supplies_3_3v,
ARRAY_SIZE(fixed_supplies_3_3v), 3300000);
nvmem_add_cell_table(&davinci_nvmem_cell_table);
nvmem_add_cell_lookups(&davinci_nvmem_cell_lookup, 1);
......
......@@ -29,6 +29,8 @@
#include <linux/v4l2-dv-timings.h>
#include <linux/export.h>
#include <linux/leds.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <media/i2c/tvp514x.h>
......@@ -653,6 +655,19 @@ static struct i2c_board_info __initdata i2c_info[] = {
},
};
/* Fixed regulator support */
static struct regulator_consumer_supply fixed_supplies_3_3v[] = {
/* Baseboard 3.3V: 5V -> TPS54310PWP -> 3.3V */
REGULATOR_SUPPLY("AVDD", "1-001b"),
REGULATOR_SUPPLY("DRVDD", "1-001b"),
};
static struct regulator_consumer_supply fixed_supplies_1_8v[] = {
/* Baseboard 1.8V: 5V -> TPS54310PWP -> 1.8V */
REGULATOR_SUPPLY("IOVDD", "1-001b"),
REGULATOR_SUPPLY("DVDD", "1-001b"),
};
#define DM644X_I2C_SDA_PIN GPIO_TO_PIN(2, 12)
#define DM644X_I2C_SCL_PIN GPIO_TO_PIN(2, 11)
......@@ -831,6 +846,11 @@ static __init void davinci_evm_init(void)
dm644x_register_clocks();
regulator_register_always_on(0, "fixed-dummy", fixed_supplies_1_8v,
ARRAY_SIZE(fixed_supplies_1_8v), 1800000);
regulator_register_always_on(1, "fixed-dummy", fixed_supplies_3_3v,
ARRAY_SIZE(fixed_supplies_3_3v), 3300000);
dm644x_init_devices();
ret = dm644x_gpio_register();
......
......@@ -21,7 +21,6 @@
#include <mach/common.h>
#include <mach/cputype.h>
#include <mach/da8xx.h>
#include <mach/time.h>
#include "asp.h"
#include "cpuidle.h"
......
......@@ -17,7 +17,6 @@
#include <mach/hardware.h>
#include <mach/cputype.h>
#include <mach/mux.h>
#include <mach/time.h>
#include "davinci.h"
#include "irqs.h"
......@@ -303,21 +302,3 @@ int davinci_gpio_register(struct resource *res, int size, void *pdata)
davinci_gpio_device.dev.platform_data = pdata;
return platform_device_register(&davinci_gpio_device);
}
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*/
struct davinci_timer_instance davinci_timer_instance[2] = {
{
.base = DAVINCI_TIMER0_BASE,
.bottom_irq = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12),
.top_irq = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34),
},
{
.base = DAVINCI_TIMER1_BASE,
.bottom_irq = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT12),
.top_irq = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34),
},
};
......@@ -35,7 +35,8 @@
#include <mach/cputype.h>
#include <mach/mux.h>
#include <mach/serial.h>
#include <mach/time.h>
#include <clocksource/timer-davinci.h>
#include "asp.h"
#include "davinci.h"
......@@ -660,10 +661,16 @@ static struct davinci_id dm365_ids[] = {
},
};
static struct davinci_timer_info dm365_timer_info = {
.timers = davinci_timer_instance,
.clockevent_id = T0_BOT,
.clocksource_id = T0_TOP,
/*
* Bottom half of timer0 is used for clockevent, top half is used for
* clocksource.
*/
static const struct davinci_timer_cfg dm365_timer_cfg = {
.reg = DEFINE_RES_IO(DAVINCI_TIMER0_BASE, SZ_128),
.irq = {
DEFINE_RES_IRQ(DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12)),
DEFINE_RES_IRQ(DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34)),
},
};
#define DM365_UART1_BASE (IO_PHYS + 0x106000)
......@@ -723,7 +730,6 @@ static const struct davinci_soc_info davinci_soc_info_dm365 = {
.pinmux_base = DAVINCI_SYSTEM_MODULE_BASE,
.pinmux_pins = dm365_pins,
.pinmux_pins_num = ARRAY_SIZE(dm365_pins),
.timer_info = &dm365_timer_info,
.emac_pdata = &dm365_emac_pdata,
.sram_dma = 0x00010000,
.sram_len = SZ_32K,
......@@ -771,6 +777,7 @@ void __init dm365_init_time(void)
{
void __iomem *pll1, *pll2, *psc;
struct clk *clk;
int rv;
clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DM365_REF_FREQ);
......@@ -789,7 +796,8 @@ void __init dm365_init_time(void)
return;
}
davinci_timer_init(clk);
rv = davinci_timer_register(clk, &dm365_timer_cfg);
WARN(rv, "Unable to register the timer: %d\n", rv);
}
void __init dm365_register_clocks(void)
......
......@@ -22,22 +22,6 @@
#define DAVINCI_INTC_START NR_IRQS
#define DAVINCI_INTC_IRQ(_irqnum) (DAVINCI_INTC_START + (_irqnum))
void davinci_timer_init(struct clk *clk);
struct davinci_timer_instance {
u32 base;
u32 bottom_irq;
u32 top_irq;
unsigned long cmp_off;
unsigned int cmp_irq;
};
struct davinci_timer_info {
struct davinci_timer_instance *timers;
unsigned int clockevent_id;
unsigned int clocksource_id;
};
struct davinci_gpio_controller;
/*
......@@ -58,7 +42,6 @@ struct davinci_soc_info {
u32 pinmux_base;
const struct mux_config *pinmux_pins;
unsigned long pinmux_pins_num;
struct davinci_timer_info *timer_info;
int gpio_type;
u32 gpio_base;
unsigned gpio_num;
......
/*
* Local header file for DaVinci time code.
*
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#ifndef __ARCH_ARM_MACH_DAVINCI_TIME_H
#define __ARCH_ARM_MACH_DAVINCI_TIME_H
#define DAVINCI_TIMER1_BASE (IO_PHYS + 0x21800)
enum {
T0_BOT,
T0_TOP,
T1_BOT,
T1_TOP,
NUM_TIMERS
};
#define IS_TIMER1(id) (id & 0x2)
#define IS_TIMER0(id) (!IS_TIMER1(id))
#define IS_TIMER_TOP(id) ((id & 0x1))
#define IS_TIMER_BOT(id) (!IS_TIMER_TOP(id))
#define ID_TO_TIMER(id) (IS_TIMER1(id) != 0)
extern struct davinci_timer_instance davinci_timer_instance[];
#endif /* __ARCH_ARM_MACH_DAVINCI_TIME_H */
/*
* DaVinci timer subsystem
*
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/sched_clock.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <mach/cputype.h>
#include <mach/hardware.h>
#include <mach/time.h>
static struct clock_event_device clockevent_davinci;
static unsigned int davinci_clock_tick_rate;
/*
* This driver configures the 2 64-bit count-up timers as 4 independent
* 32-bit count-up timers used as follows:
*/
enum {
TID_CLOCKEVENT,
TID_CLOCKSOURCE,
};
/* Timer register offsets */
#define PID12 0x0
#define TIM12 0x10
#define TIM34 0x14
#define PRD12 0x18
#define PRD34 0x1c
#define TCR 0x20
#define TGCR 0x24
#define WDTCR 0x28
/* Offsets of the 8 compare registers */
#define CMP12_0 0x60
#define CMP12_1 0x64
#define CMP12_2 0x68
#define CMP12_3 0x6c
#define CMP12_4 0x70
#define CMP12_5 0x74
#define CMP12_6 0x78
#define CMP12_7 0x7c
/* Timer register bitfields */
#define TCR_ENAMODE_DISABLE 0x0
#define TCR_ENAMODE_ONESHOT 0x1
#define TCR_ENAMODE_PERIODIC 0x2
#define TCR_ENAMODE_MASK 0x3
#define TGCR_TIMMODE_SHIFT 2
#define TGCR_TIMMODE_64BIT_GP 0x0
#define TGCR_TIMMODE_32BIT_UNCHAINED 0x1
#define TGCR_TIMMODE_64BIT_WDOG 0x2
#define TGCR_TIMMODE_32BIT_CHAINED 0x3
#define TGCR_TIM12RS_SHIFT 0
#define TGCR_TIM34RS_SHIFT 1
#define TGCR_RESET 0x0
#define TGCR_UNRESET 0x1
#define TGCR_RESET_MASK 0x3
struct timer_s {
char *name;
unsigned int id;
unsigned long period;
unsigned long opts;
unsigned long flags;
void __iomem *base;
unsigned long tim_off;
unsigned long prd_off;
unsigned long enamode_shift;
struct irqaction irqaction;
};
static struct timer_s timers[];
/* values for 'opts' field of struct timer_s */
#define TIMER_OPTS_DISABLED 0x01
#define TIMER_OPTS_ONESHOT 0x02
#define TIMER_OPTS_PERIODIC 0x04
#define TIMER_OPTS_STATE_MASK 0x07
#define TIMER_OPTS_USE_COMPARE 0x80000000
#define USING_COMPARE(t) ((t)->opts & TIMER_OPTS_USE_COMPARE)
static char *id_to_name[] = {
[T0_BOT] = "timer0_0",
[T0_TOP] = "timer0_1",
[T1_BOT] = "timer1_0",
[T1_TOP] = "timer1_1",
};
static int timer32_config(struct timer_s *t)
{
u32 tcr;
struct davinci_soc_info *soc_info = &davinci_soc_info;
if (USING_COMPARE(t)) {
struct davinci_timer_instance *dtip =
soc_info->timer_info->timers;
int event_timer = ID_TO_TIMER(timers[TID_CLOCKEVENT].id);
/*
* Next interrupt should be the current time reg value plus
* the new period (using 32-bit unsigned addition/wrapping
* to 0 on overflow). This assumes that the clocksource
* is setup to count to 2^32-1 before wrapping around to 0.
*/
__raw_writel(__raw_readl(t->base + t->tim_off) + t->period,
t->base + dtip[event_timer].cmp_off);
} else {
tcr = __raw_readl(t->base + TCR);
/* disable timer */
tcr &= ~(TCR_ENAMODE_MASK << t->enamode_shift);
__raw_writel(tcr, t->base + TCR);
/* reset counter to zero, set new period */
__raw_writel(0, t->base + t->tim_off);
__raw_writel(t->period, t->base + t->prd_off);
/* Set enable mode */
if (t->opts & TIMER_OPTS_ONESHOT)
tcr |= TCR_ENAMODE_ONESHOT << t->enamode_shift;
else if (t->opts & TIMER_OPTS_PERIODIC)
tcr |= TCR_ENAMODE_PERIODIC << t->enamode_shift;
__raw_writel(tcr, t->base + TCR);
}
return 0;
}
static inline u32 timer32_read(struct timer_s *t)
{
return __raw_readl(t->base + t->tim_off);
}
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &clockevent_davinci;
evt->event_handler(evt);
return IRQ_HANDLED;
}
/* called when 32-bit counter wraps */
static irqreturn_t freerun_interrupt(int irq, void *dev_id)
{
return IRQ_HANDLED;
}
static struct timer_s timers[] = {
[TID_CLOCKEVENT] = {
.name = "clockevent",
.opts = TIMER_OPTS_DISABLED,
.irqaction = {
.flags = IRQF_TIMER,
.handler = timer_interrupt,
}
},
[TID_CLOCKSOURCE] = {
.name = "free-run counter",
.period = ~0,
.opts = TIMER_OPTS_PERIODIC,
.irqaction = {
.flags = IRQF_TIMER,
.handler = freerun_interrupt,
}
},
};
static void __init timer_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
struct davinci_timer_instance *dtip = soc_info->timer_info->timers;
void __iomem *base[2];
int i;
/* Global init of each 64-bit timer as a whole */
for(i=0; i<2; i++) {
u32 tgcr;
base[i] = ioremap(dtip[i].base, SZ_4K);
if (WARN_ON(!base[i]))
continue;
/* Disabled, Internal clock source */
__raw_writel(0, base[i] + TCR);
/* reset both timers, no pre-scaler for timer34 */
tgcr = 0;
__raw_writel(tgcr, base[i] + TGCR);
/* Set both timers to unchained 32-bit */
tgcr = TGCR_TIMMODE_32BIT_UNCHAINED << TGCR_TIMMODE_SHIFT;
__raw_writel(tgcr, base[i] + TGCR);
/* Unreset timers */
tgcr |= (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) |
(TGCR_UNRESET << TGCR_TIM34RS_SHIFT);
__raw_writel(tgcr, base[i] + TGCR);
/* Init both counters to zero */
__raw_writel(0, base[i] + TIM12);
__raw_writel(0, base[i] + TIM34);
}
/* Init of each timer as a 32-bit timer */
for (i=0; i< ARRAY_SIZE(timers); i++) {
struct timer_s *t = &timers[i];
int timer = ID_TO_TIMER(t->id);
u32 irq;
t->base = base[timer];
if (!t->base)
continue;
if (IS_TIMER_BOT(t->id)) {
t->enamode_shift = 6;
t->tim_off = TIM12;
t->prd_off = PRD12;
irq = dtip[timer].bottom_irq;
} else {
t->enamode_shift = 22;
t->tim_off = TIM34;
t->prd_off = PRD34;
irq = dtip[timer].top_irq;
}
/* Register interrupt */
t->irqaction.name = t->name;
t->irqaction.dev_id = (void *)t;
if (t->irqaction.handler != NULL) {
irq = USING_COMPARE(t) ? dtip[i].cmp_irq : irq;
setup_irq(irq, &t->irqaction);
}
}
}
/*
* clocksource
*/
static u64 read_cycles(struct clocksource *cs)
{
struct timer_s *t = &timers[TID_CLOCKSOURCE];
return (cycles_t)timer32_read(t);
}
static struct clocksource clocksource_davinci = {
.rating = 300,
.read = read_cycles,
.mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/*
* Overwrite weak default sched_clock with something more precise
*/
static u64 notrace davinci_read_sched_clock(void)
{
return timer32_read(&timers[TID_CLOCKSOURCE]);
}
/*
* clockevent
*/
static int davinci_set_next_event(unsigned long cycles,
struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->period = cycles;
timer32_config(t);
return 0;
}
static int davinci_shutdown(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_DISABLED;
return 0;
}
static int davinci_set_oneshot(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_ONESHOT;
return 0;
}
static int davinci_set_periodic(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->period = davinci_clock_tick_rate / (HZ);
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_PERIODIC;
timer32_config(t);
return 0;
}
static struct clock_event_device clockevent_davinci = {
.features = CLOCK_EVT_FEAT_PERIODIC |
CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = davinci_set_next_event,
.set_state_shutdown = davinci_shutdown,
.set_state_periodic = davinci_set_periodic,
.set_state_oneshot = davinci_set_oneshot,
};
void __init davinci_timer_init(struct clk *timer_clk)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
unsigned int clockevent_id;
unsigned int clocksource_id;
int i;
clockevent_id = soc_info->timer_info->clockevent_id;
clocksource_id = soc_info->timer_info->clocksource_id;
timers[TID_CLOCKEVENT].id = clockevent_id;
timers[TID_CLOCKSOURCE].id = clocksource_id;
/*
* If using same timer for both clock events & clocksource,
* a compare register must be used to generate an event interrupt.
* This is equivalent to a oneshot timer only (not periodic).
*/
if (clockevent_id == clocksource_id) {
struct davinci_timer_instance *dtip =
soc_info->timer_info->timers;
int event_timer = ID_TO_TIMER(clockevent_id);
/* Only bottom timers can use compare regs */
if (IS_TIMER_TOP(clockevent_id))
pr_warn("%s: Invalid use of system timers. Results unpredictable.\n",
__func__);
else if ((dtip[event_timer].cmp_off == 0)
|| (dtip[event_timer].cmp_irq == 0))
pr_warn("%s: Invalid timer instance setup. Results unpredictable.\n",
__func__);
else {
timers[TID_CLOCKEVENT].opts |= TIMER_OPTS_USE_COMPARE;
clockevent_davinci.features = CLOCK_EVT_FEAT_ONESHOT;
}
}