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linux_dsm_epyc7002/arch/arm/mach-at91/at91sam9260.c
Olof Johansson 11d73c56b9 This cleanup series gets rid of <mach/timex.h> for platforms not using 
ARCH_MULTIPLATFORM. (For multi-platform code it's already unused since
 387798b (ARM: initial multiplatform support).)
 
 To make this work some code out of arch/arm needed to be adapted. The
 respective changes got acks by their maintainers to be taken via armsoc
 (with Andrew Morton substituting for Alessandro Zummo as rtc maintainer).
 
 Compared to the previous pull request there was another patch added that
 fixes a (non-critical) regression on ixp4xx. Olof Johansson asked to not
 squash this fix into the original commit to save him from the need to
 reverify the series.
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Merge tag 'dropmachtimexh-v2' of git://git.pengutronix.de/git/ukl/linux into next/cleanup

This cleanup series gets rid of <mach/timex.h> for platforms not using
ARCH_MULTIPLATFORM. (For multi-platform code it's already unused since
387798b (ARM: initial multiplatform support).)

To make this work some code out of arch/arm needed to be adapted. The
respective changes got acks by their maintainers to be taken via armsoc
(with Andrew Morton substituting for Alessandro Zummo as rtc maintainer).

Compared to the previous pull request there was another patch added that
fixes a (non-critical) regression on ixp4xx. Olof Johansson asked to not
squash this fix into the original commit to save him from the need to
reverify the series.

* tag 'dropmachtimexh-v2' of git://git.pengutronix.de/git/ukl/linux:
  ARM: ixp4xx: fix timer latch calculation
  ARM: drop <mach/timex.h> for !ARCH_MULTIPLATFORM, too
  ARM: rpc: stop using <mach/timex.h>
  ARM: ixp4xx: stop using <mach/timex.h>
  input: ixp4xx-beeper: don't use symbols from <mach/timex.h>
  ARM: at91: don't use <mach/timex.h>
  ARM: ep93xx: stop using mach/timex.h
  ARM: mmp: stop using mach/timex.h
  ARM: netx: stop using mach/timex.h
  ARM: sa1100: stop using mach/timex.h
  clocksource: sirf/marco+prima2: drop usage of CLOCK_TICK_RATE
  rtc: pxa: drop unused #define TIMER_FREQ
  rtc: at91sam9: include <mach/hardware.h> explicitly
  ARM/serial: at91: switch atmel serial to use gpiolib

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-02-18 22:19:33 -08:00

412 lines
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/*
* arch/arm/mach-at91/at91sam9260.c
*
* Copyright (C) 2006 SAN People
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/clk/at91_pmc.h>
#include <asm/proc-fns.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/system_misc.h>
#include <mach/cpu.h>
#include <mach/at91_dbgu.h>
#include <mach/at91sam9260.h>
#include <mach/hardware.h>
#include "at91_aic.h"
#include "at91_rstc.h"
#include "soc.h"
#include "generic.h"
#include "clock.h"
#include "sam9_smc.h"
#include "pm.h"
/* --------------------------------------------------------------------
* Clocks
* -------------------------------------------------------------------- */
/*
* The peripheral clocks.
*/
static struct clk pioA_clk = {
.name = "pioA_clk",
.pmc_mask = 1 << AT91SAM9260_ID_PIOA,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioB_clk = {
.name = "pioB_clk",
.pmc_mask = 1 << AT91SAM9260_ID_PIOB,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioC_clk = {
.name = "pioC_clk",
.pmc_mask = 1 << AT91SAM9260_ID_PIOC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk adc_clk = {
.name = "adc_clk",
.pmc_mask = 1 << AT91SAM9260_ID_ADC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk adc_op_clk = {
.name = "adc_op_clk",
.type = CLK_TYPE_PERIPHERAL,
.rate_hz = 5000000,
};
static struct clk usart0_clk = {
.name = "usart0_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart1_clk = {
.name = "usart1_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart2_clk = {
.name = "usart2_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc_clk = {
.name = "mci_clk",
.pmc_mask = 1 << AT91SAM9260_ID_MCI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk udc_clk = {
.name = "udc_clk",
.pmc_mask = 1 << AT91SAM9260_ID_UDP,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk twi_clk = {
.name = "twi_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TWI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi0_clk = {
.name = "spi0_clk",
.pmc_mask = 1 << AT91SAM9260_ID_SPI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi1_clk = {
.name = "spi1_clk",
.pmc_mask = 1 << AT91SAM9260_ID_SPI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc_clk = {
.name = "ssc_clk",
.pmc_mask = 1 << AT91SAM9260_ID_SSC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc0_clk = {
.name = "tc0_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc1_clk = {
.name = "tc1_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc2_clk = {
.name = "tc2_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ohci_clk = {
.name = "ohci_clk",
.pmc_mask = 1 << AT91SAM9260_ID_UHP,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk macb_clk = {
.name = "pclk",
.pmc_mask = 1 << AT91SAM9260_ID_EMAC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk isi_clk = {
.name = "isi_clk",
.pmc_mask = 1 << AT91SAM9260_ID_ISI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart3_clk = {
.name = "usart3_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US3,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart4_clk = {
.name = "usart4_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US4,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart5_clk = {
.name = "usart5_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US5,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc3_clk = {
.name = "tc3_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC3,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc4_clk = {
.name = "tc4_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC4,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc5_clk = {
.name = "tc5_clk",
.pmc_mask = 1 << AT91SAM9260_ID_TC5,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk *periph_clocks[] __initdata = {
&pioA_clk,
&pioB_clk,
&pioC_clk,
&adc_clk,
&adc_op_clk,
&usart0_clk,
&usart1_clk,
&usart2_clk,
&mmc_clk,
&udc_clk,
&twi_clk,
&spi0_clk,
&spi1_clk,
&ssc_clk,
&tc0_clk,
&tc1_clk,
&tc2_clk,
&ohci_clk,
&macb_clk,
&isi_clk,
&usart3_clk,
&usart4_clk,
&usart5_clk,
&tc3_clk,
&tc4_clk,
&tc5_clk,
// irq0 .. irq2
};
static struct clk_lookup periph_clocks_lookups[] = {
/* One additional fake clock for macb_hclk */
CLKDEV_CON_ID("hclk", &macb_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc_clk),
CLKDEV_CON_DEV_ID("pclk", "fffbc000.ssc", &ssc_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260.0", &twi_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi_clk),
/* more usart lookup table for DT entries */
CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck),
CLKDEV_CON_DEV_ID("usart", "fffb0000.serial", &usart0_clk),
CLKDEV_CON_DEV_ID("usart", "fffb4000.serial", &usart1_clk),
CLKDEV_CON_DEV_ID("usart", "fffb8000.serial", &usart2_clk),
CLKDEV_CON_DEV_ID("usart", "fffd0000.serial", &usart3_clk),
CLKDEV_CON_DEV_ID("usart", "fffd4000.serial", &usart4_clk),
CLKDEV_CON_DEV_ID("usart", "fffd8000.serial", &usart5_clk),
CLKDEV_CON_DEV_ID(NULL, "fffac000.i2c", &twi_clk),
/* more tc lookup table for DT entries */
CLKDEV_CON_DEV_ID("t0_clk", "fffa0000.timer", &tc0_clk),
CLKDEV_CON_DEV_ID("t1_clk", "fffa0000.timer", &tc1_clk),
CLKDEV_CON_DEV_ID("t2_clk", "fffa0000.timer", &tc2_clk),
CLKDEV_CON_DEV_ID("t0_clk", "fffdc000.timer", &tc3_clk),
CLKDEV_CON_DEV_ID("t1_clk", "fffdc000.timer", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "fffdc000.timer", &tc5_clk),
CLKDEV_CON_DEV_ID("hclk", "500000.ohci", &ohci_clk),
CLKDEV_CON_DEV_ID("mci_clk", "fffa8000.mmc", &mmc_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffc8000.spi", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffcc000.spi", &spi1_clk),
/* fake hclk clock */
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
CLKDEV_CON_ID("pioA", &pioA_clk),
CLKDEV_CON_ID("pioB", &pioB_clk),
CLKDEV_CON_ID("pioC", &pioC_clk),
CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk),
CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk),
CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.5", &usart4_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.6", &usart5_clk),
};
/*
* The two programmable clocks.
* You must configure pin multiplexing to bring these signals out.
*/
static struct clk pck0 = {
.name = "pck0",
.pmc_mask = AT91_PMC_PCK0,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 0,
};
static struct clk pck1 = {
.name = "pck1",
.pmc_mask = AT91_PMC_PCK1,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 1,
};
static void __init at91sam9260_register_clocks(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
clk_register(periph_clocks[i]);
clkdev_add_table(periph_clocks_lookups,
ARRAY_SIZE(periph_clocks_lookups));
clkdev_add_table(usart_clocks_lookups,
ARRAY_SIZE(usart_clocks_lookups));
clk_register(&pck0);
clk_register(&pck1);
}
/* --------------------------------------------------------------------
* GPIO
* -------------------------------------------------------------------- */
static struct at91_gpio_bank at91sam9260_gpio[] __initdata = {
{
.id = AT91SAM9260_ID_PIOA,
.regbase = AT91SAM9260_BASE_PIOA,
}, {
.id = AT91SAM9260_ID_PIOB,
.regbase = AT91SAM9260_BASE_PIOB,
}, {
.id = AT91SAM9260_ID_PIOC,
.regbase = AT91SAM9260_BASE_PIOC,
}
};
/* --------------------------------------------------------------------
* AT91SAM9260 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9xe_map_io(void)
{
unsigned long sram_size;
switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) {
case AT91_CIDR_SRAMSIZ_32K:
sram_size = 2 * SZ_16K;
break;
case AT91_CIDR_SRAMSIZ_16K:
default:
sram_size = SZ_16K;
}
at91_init_sram(0, AT91SAM9XE_SRAM_BASE, sram_size);
}
static void __init at91sam9260_map_io(void)
{
if (cpu_is_at91sam9xe())
at91sam9xe_map_io();
else if (cpu_is_at91sam9g20())
at91_init_sram(0, AT91SAM9G20_SRAM_BASE, AT91SAM9G20_SRAM_SIZE);
else
at91_init_sram(0, AT91SAM9260_SRAM_BASE, AT91SAM9260_SRAM_SIZE);
}
static void __init at91sam9260_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9260_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9260_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9260_BASE_SDRAMC, 512);
at91sam926x_ioremap_pit(AT91SAM9260_BASE_PIT);
at91sam9_ioremap_smc(0, AT91SAM9260_BASE_SMC);
at91_ioremap_matrix(AT91SAM9260_BASE_MATRIX);
at91_pm_set_standby(at91sam9_sdram_standby);
}
static void __init at91sam9260_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
/* Register GPIO subsystem */
at91_gpio_init(at91sam9260_gpio, 3);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
/*
* The default interrupt priority levels (0 = lowest, 7 = highest).
*/
static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
7, /* Advanced Interrupt Controller */
7, /* System Peripherals */
1, /* Parallel IO Controller A */
1, /* Parallel IO Controller B */
1, /* Parallel IO Controller C */
0, /* Analog-to-Digital Converter */
5, /* USART 0 */
5, /* USART 1 */
5, /* USART 2 */
0, /* Multimedia Card Interface */
2, /* USB Device Port */
6, /* Two-Wire Interface */
5, /* Serial Peripheral Interface 0 */
5, /* Serial Peripheral Interface 1 */
5, /* Serial Synchronous Controller */
0,
0,
0, /* Timer Counter 0 */
0, /* Timer Counter 1 */
0, /* Timer Counter 2 */
2, /* USB Host port */
3, /* Ethernet */
0, /* Image Sensor Interface */
5, /* USART 3 */
5, /* USART 4 */
5, /* USART 5 */
0, /* Timer Counter 3 */
0, /* Timer Counter 4 */
0, /* Timer Counter 5 */
0, /* Advanced Interrupt Controller */
0, /* Advanced Interrupt Controller */
0, /* Advanced Interrupt Controller */
};
AT91_SOC_START(at91sam9260)
.map_io = at91sam9260_map_io,
.default_irq_priority = at91sam9260_default_irq_priority,
.extern_irq = (1 << AT91SAM9260_ID_IRQ0) | (1 << AT91SAM9260_ID_IRQ1)
| (1 << AT91SAM9260_ID_IRQ2),
.ioremap_registers = at91sam9260_ioremap_registers,
.register_clocks = at91sam9260_register_clocks,
.init = at91sam9260_initialize,
AT91_SOC_END
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