davinci: MMC platform support

Add SoC and platform-specific data and init for MMC driver.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman 2009-05-11 15:55:03 -07:00
parent 35652fe185
commit 2dbf56aeb7
5 changed files with 271 additions and 0 deletions

View file

@ -36,6 +36,7 @@
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/nand.h>
#include <mach/mmc.h>
#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
@ -191,6 +192,31 @@ static void __init dm355_evm_map_io(void)
dm355_init();
}
static int dm355evm_mmc_get_cd(int module)
{
if (!gpio_is_valid(dm355evm_mmc_gpios))
return -ENXIO;
/* low == card present */
return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
}
static int dm355evm_mmc_get_ro(int module)
{
if (!gpio_is_valid(dm355evm_mmc_gpios))
return -ENXIO;
/* high == card's write protect switch active */
return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
}
static struct davinci_mmc_config dm355evm_mmc_config = {
.get_cd = dm355evm_mmc_get_cd,
.get_ro = dm355evm_mmc_get_ro,
.wires = 4,
.max_freq = 50000000,
.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
.version = MMC_CTLR_VERSION_1,
};
/* Don't connect anything to J10 unless you're only using USB host
* mode *and* have to do so with some kind of gender-bender. If
* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
@ -249,6 +275,9 @@ static __init void dm355_evm_init(void)
/* irlml6401 switches over 1A in under 8 msec */
setup_usb(500, 8);
davinci_setup_mmc(0, &dm355evm_mmc_config);
davinci_setup_mmc(1, &dm355evm_mmc_config);
dm355_init_spi0(BIT(0), dm355_evm_spi_info,
ARRAY_SIZE(dm355_evm_spi_info));
}

View file

@ -35,6 +35,7 @@
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/nand.h>
#include <mach/mmc.h>
#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
@ -190,6 +191,30 @@ static void __init dm355_leopard_map_io(void)
dm355_init();
}
static int dm355leopard_mmc_get_cd(int module)
{
if (!gpio_is_valid(leopard_mmc_gpio))
return -ENXIO;
/* low == card present */
return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
}
static int dm355leopard_mmc_get_ro(int module)
{
if (!gpio_is_valid(leopard_mmc_gpio))
return -ENXIO;
/* high == card's write protect switch active */
return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
}
static struct davinci_mmc_config dm355leopard_mmc_config = {
.get_cd = dm355leopard_mmc_get_cd,
.get_ro = dm355leopard_mmc_get_ro,
.wires = 4,
.max_freq = 50000000,
.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
};
/* Don't connect anything to J10 unless you're only using USB host
* mode *and* have to do so with some kind of gender-bender. If
* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
@ -248,6 +273,9 @@ static __init void dm355_leopard_init(void)
/* irlml6401 switches over 1A in under 8 msec */
setup_usb(500, 8);
davinci_setup_mmc(0, &dm355leopard_mmc_config);
davinci_setup_mmc(1, &dm355leopard_mmc_config);
dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
ARRAY_SIZE(dm355_leopard_spi_info));
}

View file

@ -44,6 +44,7 @@
#include <mach/mux.h>
#include <mach/psc.h>
#include <mach/nand.h>
#include <mach/mmc.h>
#define DM644X_EVM_PHY_MASK (0x2)
#define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
@ -545,6 +546,27 @@ static int dm6444evm_msp430_get_pins(void)
return (buf[3] << 8) | buf[2];
}
static int dm6444evm_mmc_get_cd(int module)
{
int status = dm6444evm_msp430_get_pins();
return (status < 0) ? status : !(status & BIT(1));
}
static int dm6444evm_mmc_get_ro(int module)
{
int status = dm6444evm_msp430_get_pins();
return (status < 0) ? status : status & BIT(6 + 8);
}
static struct davinci_mmc_config dm6446evm_mmc_config = {
.get_cd = dm6444evm_mmc_get_cd,
.get_ro = dm6444evm_mmc_get_ro,
.wires = 4,
.version = MMC_CTLR_VERSION_1
};
static struct i2c_board_info __initdata i2c_info[] = {
{
I2C_BOARD_INFO("dm6446evm_msp", 0x23),
@ -671,6 +693,8 @@ static __init void davinci_evm_init(void)
ARRAY_SIZE(davinci_evm_devices));
evm_init_i2c();
davinci_setup_mmc(0, &dm6446evm_mmc_config);
davinci_serial_init(&uart_config);
/* Register the fixup for PHY on DaVinci */

View file

@ -23,8 +23,13 @@
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <mach/mux.h>
#include <mach/edma.h>
#include <mach/mmc.h>
#define DAVINCI_I2C_BASE 0x01C21000
#define DAVINCI_MMCSD0_BASE 0x01E10000
#define DM355_MMCSD0_BASE 0x01E11000
#define DM355_MMCSD1_BASE 0x01E00000
static struct resource i2c_resources[] = {
{
@ -54,6 +59,158 @@ void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
(void) platform_device_register(&davinci_i2c_device);
}
#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
static u64 mmcsd0_dma_mask = DMA_32BIT_MASK;
static struct resource mmcsd0_resources[] = {
{
/* different on dm355 */
.start = DAVINCI_MMCSD0_BASE,
.end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
/* IRQs: MMC/SD, then SDIO */
{
.start = IRQ_MMCINT,
.flags = IORESOURCE_IRQ,
}, {
/* different on dm355 */
.start = IRQ_SDIOINT,
.flags = IORESOURCE_IRQ,
},
/* DMA channels: RX, then TX */
{
.start = DAVINCI_DMA_MMCRXEVT,
.flags = IORESOURCE_DMA,
}, {
.start = DAVINCI_DMA_MMCTXEVT,
.flags = IORESOURCE_DMA,
},
};
static struct platform_device davinci_mmcsd0_device = {
.name = "davinci_mmc",
.id = 0,
.dev = {
.dma_mask = &mmcsd0_dma_mask,
.coherent_dma_mask = DMA_32BIT_MASK,
},
.num_resources = ARRAY_SIZE(mmcsd0_resources),
.resource = mmcsd0_resources,
};
static u64 mmcsd1_dma_mask = DMA_32BIT_MASK;
static struct resource mmcsd1_resources[] = {
{
.start = DM355_MMCSD1_BASE,
.end = DM355_MMCSD1_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
/* IRQs: MMC/SD, then SDIO */
{
.start = IRQ_DM355_MMCINT1,
.flags = IORESOURCE_IRQ,
}, {
.start = IRQ_DM355_SDIOINT1,
.flags = IORESOURCE_IRQ,
},
/* DMA channels: RX, then TX */
{
.start = 30, /* rx */
.flags = IORESOURCE_DMA,
}, {
.start = 31, /* tx */
.flags = IORESOURCE_DMA,
},
};
static struct platform_device davinci_mmcsd1_device = {
.name = "davinci_mmc",
.id = 1,
.dev = {
.dma_mask = &mmcsd1_dma_mask,
.coherent_dma_mask = DMA_32BIT_MASK,
},
.num_resources = ARRAY_SIZE(mmcsd1_resources),
.resource = mmcsd1_resources,
};
void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
struct platform_device *pdev = NULL;
if (WARN_ON(cpu_is_davinci_dm646x()))
return;
/* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
* for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
*
* FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
* not handled right here ...
*/
switch (module) {
case 1:
if (!cpu_is_davinci_dm355())
break;
/* REVISIT we may not need all these pins if e.g. this
* is a hard-wired SDIO device...
*/
davinci_cfg_reg(DM355_SD1_CMD);
davinci_cfg_reg(DM355_SD1_CLK);
davinci_cfg_reg(DM355_SD1_DATA0);
davinci_cfg_reg(DM355_SD1_DATA1);
davinci_cfg_reg(DM355_SD1_DATA2);
davinci_cfg_reg(DM355_SD1_DATA3);
pdev = &davinci_mmcsd1_device;
break;
case 0:
if (cpu_is_davinci_dm355()) {
mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
/* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
davinci_cfg_reg(DM355_MMCSD0);
/* enable RX EDMA */
davinci_cfg_reg(DM355_EVT26_MMC0_RX);
}
else if (cpu_is_davinci_dm644x()) {
/* REVISIT: should this be in board-init code? */
void __iomem *base =
IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
/* Power-on 3.3V IO cells */
__raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
/*Set up the pull regiter for MMC */
davinci_cfg_reg(DM644X_MSTK);
}
pdev = &davinci_mmcsd0_device;
break;
}
if (WARN_ON(!pdev))
return;
pdev->dev.platform_data = config;
platform_device_register(pdev);
}
#else
void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
}
#endif
/*-------------------------------------------------------------------------*/
static struct resource wdt_resources[] = {

View file

@ -0,0 +1,33 @@
/*
* Board-specific MMC configuration
*/
#ifndef _DAVINCI_MMC_H
#define _DAVINCI_MMC_H
#include <linux/types.h>
#include <linux/mmc/host.h>
struct davinci_mmc_config {
/* get_cd()/get_wp() may sleep */
int (*get_cd)(int module);
int (*get_ro)(int module);
/* wires == 0 is equivalent to wires == 4 (4-bit parallel) */
u8 wires;
u32 max_freq;
/* any additional host capabilities: OR'd in to mmc->f_caps */
u32 caps;
/* Version of the MMC/SD controller */
u8 version;
};
void davinci_setup_mmc(int module, struct davinci_mmc_config *config);
enum {
MMC_CTLR_VERSION_1 = 0, /* DM644x and DM355 */
MMC_CTLR_VERSION_2, /* DA830 */
};
#endif