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ARM: mxs: dynamically allocate mmc device

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Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
[ukleinek: fix naming to include complete device name in functions]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Shawn Guo 2011-03-16 11:31:06 +01:00 • committed by Sascha Hauer
commit 47babe692e
8 changed files with 131 additions and 0 deletions
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15
arch/arm/mach-mxs/clock-mx23.c
View file

@ -521,6 +521,15 @@ static int clk_misc_init(void)
__raw_writel(BM_CLKCTRL_CPU_INTERRUPT_WAIT,
CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_SET);
/*
* 480 MHz seems too high to be ssp clock source directly,
* so set frac to get a 288 MHz ref_io.
*/
reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC);
reg &= ~BM_CLKCTRL_FRAC_IOFRAC;
reg |= 30 << BP_CLKCTRL_FRAC_IOFRAC;
__raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC);
return 0;
}
@ -528,6 +537,12 @@ int __init mx23_clocks_init(void)
{
clk_misc_init();
/*
* source ssp clock from ref_io than ref_xtal,
* as ref_xtal only provides 24 MHz as maximum.
*/
clk_set_parent(&ssp_clk, &ref_io_clk);
clk_enable(&cpu_clk);
clk_enable(&hbus_clk);
clk_enable(&xbus_clk);

18
arch/arm/mach-mxs/clock-mx28.c
View file

@ -618,6 +618,8 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("pll2", NULL, pll2_clk)
_REGISTER_CLOCK("mxs-dma-apbh", NULL, hbus_clk)
_REGISTER_CLOCK("mxs-dma-apbx", NULL, xbus_clk)
_REGISTER_CLOCK("mxs-mmc.0", NULL, ssp0_clk)
_REGISTER_CLOCK("mxs-mmc.1", NULL, ssp1_clk)
_REGISTER_CLOCK("flexcan.0", NULL, can0_clk)
_REGISTER_CLOCK("flexcan.1", NULL, can1_clk)
_REGISTER_CLOCK(NULL, "usb0", usb0_clk)
@ -737,6 +739,15 @@ static int clk_misc_init(void)
reg |= BM_CLKCTRL_ENET_CLK_OUT_EN;
__raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_ENET);
/*
* 480 MHz seems too high to be ssp clock source directly,
* so set frac0 to get a 288 MHz ref_io0.
*/
reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC0);
reg &= ~BM_CLKCTRL_FRAC0_IO0FRAC;
reg |= 30 << BP_CLKCTRL_FRAC0_IO0FRAC;
__raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC0);
return 0;
}
@ -744,6 +755,13 @@ int __init mx28_clocks_init(void)
{
clk_misc_init();
/*
* source ssp clock from ref_io0 than ref_xtal,
* as ref_xtal only provides 24 MHz as maximum.
*/
clk_set_parent(&ssp0_clk, &ref_io0_clk);
clk_set_parent(&ssp1_clk, &ref_io0_clk);
clk_enable(&cpu_clk);
clk_enable(&hbus_clk);
clk_enable(&xbus_clk);

4
arch/arm/mach-mxs/devices-mx23.h
View file

@ -21,6 +21,10 @@ extern const struct mxs_auart_data mx23_auart_data[] __initconst;
#define mx23_add_auart0() mx23_add_auart(0)
#define mx23_add_auart1() mx23_add_auart(1)
extern const struct mxs_mxs_mmc_data mx23_mxs_mmc_data[] __initconst;
#define mx23_add_mxs_mmc(id, pdata) \
mxs_add_mxs_mmc(&mx23_mxs_mmc_data[id], pdata)
#define mx23_add_mxs_pwm(id) mxs_add_mxs_pwm(MX23_PWM_BASE_ADDR, id)
struct platform_device *__init mx23_add_mxsfb(

4
arch/arm/mach-mxs/devices-mx28.h
View file

@ -37,6 +37,10 @@ extern const struct mxs_flexcan_data mx28_flexcan_data[] __initconst;
extern const struct mxs_i2c_data mx28_mxs_i2c_data[] __initconst;
#define mx28_add_mxs_i2c(id) mxs_add_mxs_i2c(&mx28_mxs_i2c_data[id])
extern const struct mxs_mxs_mmc_data mx28_mxs_mmc_data[] __initconst;
#define mx28_add_mxs_mmc(id, pdata) \
mxs_add_mxs_mmc(&mx28_mxs_mmc_data[id], pdata)
#define mx28_add_mxs_pwm(id) mxs_add_mxs_pwm(MX28_PWM_BASE_ADDR, id)
struct platform_device *__init mx28_add_mxsfb(

3
arch/arm/mach-mxs/devices/Kconfig
View file

@ -15,6 +15,9 @@ config MXS_HAVE_PLATFORM_FLEXCAN
config MXS_HAVE_PLATFORM_MXS_I2C
bool
config MXS_HAVE_PLATFORM_MXS_MMC
bool
config MXS_HAVE_PLATFORM_MXS_PWM
bool

1
arch/arm/mach-mxs/devices/Makefile
View file

@ -4,5 +4,6 @@ obj-y += platform-dma.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_FEC) += platform-fec.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_I2C) += platform-mxs-i2c.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_MMC) += platform-mxs-mmc.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_PWM) += platform-mxs-pwm.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_MXSFB) += platform-mxsfb.o

73
arch/arm/mach-mxs/devices/platform-mxs-mmc.c Normal file
View file

@ -0,0 +1,73 @@
/*
* Copyright (C) 2010 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
*
* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
*/
#include <linux/compiler.h>
#include <linux/err.h>
#include <linux/init.h>
#include <mach/mx23.h>
#include <mach/mx28.h>
#include <mach/devices-common.h>
#define mxs_mxs_mmc_data_entry_single(soc, _id, hwid) \
{ \
.id = _id, \
.iobase = soc ## _SSP ## hwid ## _BASE_ADDR, \
.dma = soc ## _DMA_SSP ## hwid, \
.irq_err = soc ## _INT_SSP ## hwid ## _ERROR, \
.irq_dma = soc ## _INT_SSP ## hwid ## _DMA, \
}
#define mxs_mxs_mmc_data_entry(soc, _id, hwid) \
[_id] = mxs_mxs_mmc_data_entry_single(soc, _id, hwid)
#ifdef CONFIG_SOC_IMX23
const struct mxs_mxs_mmc_data mx23_mxs_mmc_data[] __initconst = {
mxs_mxs_mmc_data_entry(MX23, 0, 1),
mxs_mxs_mmc_data_entry(MX23, 1, 2),
};
#endif
#ifdef CONFIG_SOC_IMX28
const struct mxs_mxs_mmc_data mx28_mxs_mmc_data[] __initconst = {
mxs_mxs_mmc_data_entry(MX28, 0, 0),
mxs_mxs_mmc_data_entry(MX28, 1, 1),
};
#endif
struct platform_device *__init mxs_add_mxs_mmc(
const struct mxs_mxs_mmc_data *data,
const struct mxs_mmc_platform_data *pdata)
{
struct resource res[] = {
{
.start = data->iobase,
.end = data->iobase + SZ_8K - 1,
.flags = IORESOURCE_MEM,
}, {
.start = data->dma,
.end = data->dma,
.flags = IORESOURCE_DMA,
}, {
.start = data->irq_err,
.end = data->irq_err,
.flags = IORESOURCE_IRQ,
}, {
.start = data->irq_dma,
.end = data->irq_dma,
.flags = IORESOURCE_IRQ,
},
};
return mxs_add_platform_device("mxs-mmc", data->id,
res, ARRAY_SIZE(res), pdata, sizeof(*pdata));
}

13
arch/arm/mach-mxs/include/mach/devices-common.h
View file

@ -73,6 +73,19 @@ struct mxs_i2c_data {
};
struct platform_device * __init mxs_add_mxs_i2c(const struct mxs_i2c_data *data);
/* mmc */
#include <mach/mmc.h>
struct mxs_mxs_mmc_data {
int id;
resource_size_t iobase;
resource_size_t dma;
resource_size_t irq_err;
resource_size_t irq_dma;
};
struct platform_device *__init mxs_add_mxs_mmc(
const struct mxs_mxs_mmc_data *data,
const struct mxs_mmc_platform_data *pdata);
/* pwm */
struct platform_device *__init mxs_add_mxs_pwm(
resource_size_t iobase, int id);