Skip to content

Commit

Permalink
ARM: OMAP2: Use hwmod to initialize mmc for 2420
Browse files Browse the repository at this point in the history 
This allows us to pass dma request lines in platform data to
MMC driver the same way as we already do for omap2430 and later.

Also note that we need to only build this code if MMC_OMAP
is selected, so change Makefile accordingly and place it near
the MMC_OMAP_HS in the Makefile.

Signed-off-by: Tony Lindgren <[email protected]>
  • Loading branch information
@tmlind
tmlind committed Jun 26, 2012
1 parent 5f7b900 commit b955eef
Show file tree
Hide file tree
Showing 2 changed files with 73 additions and 70 deletions.
70 changes: 0 additions & 70 deletions arch/arm/mach-omap2/devices.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@

#include "iomap.h"
#include <plat/board.h>
#include <plat/mmc.h>
#include <plat/dma.h>
#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
Expand Down Expand Up @@ -603,75 +602,6 @@ static inline void omap_init_aes(void) { }

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

static inline void omap242x_mmc_mux(struct omap_mmc_platform_data
*mmc_controller)
{
if ((mmc_controller->slots[0].switch_pin > 0) && \
(mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES))
omap_mux_init_gpio(mmc_controller->slots[0].switch_pin,
OMAP_PIN_INPUT_PULLUP);
if ((mmc_controller->slots[0].gpio_wp > 0) && \
(mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES))
omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp,
OMAP_PIN_INPUT_PULLUP);

omap_mux_init_signal("sdmmc_cmd", 0);
omap_mux_init_signal("sdmmc_clki", 0);
omap_mux_init_signal("sdmmc_clko", 0);
omap_mux_init_signal("sdmmc_dat0", 0);
omap_mux_init_signal("sdmmc_dat_dir0", 0);
omap_mux_init_signal("sdmmc_cmd_dir", 0);
if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) {
omap_mux_init_signal("sdmmc_dat1", 0);
omap_mux_init_signal("sdmmc_dat2", 0);
omap_mux_init_signal("sdmmc_dat3", 0);
omap_mux_init_signal("sdmmc_dat_dir1", 0);
omap_mux_init_signal("sdmmc_dat_dir2", 0);
omap_mux_init_signal("sdmmc_dat_dir3", 0);
}

/*
* Use internal loop-back in MMC/SDIO Module Input Clock
* selection
*/
if (mmc_controller->slots[0].internal_clock) {
u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
v |= (1 << 24);
omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
}
}

void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
{
struct platform_device *pdev;
struct omap_hwmod *oh;
int id = 0;
char *oh_name = "msdi1";
char *dev_name = "mmci-omap";

if (!mmc_data[0]) {
pr_err("%s fails: Incomplete platform data\n", __func__);
return;
}

omap242x_mmc_mux(mmc_data[0]);

oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
return;
}
pdev = omap_device_build(dev_name, id, oh, mmc_data[0],
sizeof(struct omap_mmc_platform_data), NULL, 0, 0);
if (IS_ERR(pdev))
WARN(1, "Can'd build omap_device for %s:%s.\n",
dev_name, oh->name);
}

#endif

#if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
#if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
Expand Down
73 changes: 73 additions & 0 deletions arch/arm/mach-omap2/msdi.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,15 @@
*/

#include <linux/kernel.h>
#include <linux/err.h>

#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
#include <plat/mmc.h>

#include "common.h"
#include "control.h"
#include "mux.h"

/*
* MSDI_CON_OFFSET: offset in bytes of the MSDI IP block's CON register
Expand Down Expand Up @@ -86,3 +90,72 @@ int omap_msdi_reset(struct omap_hwmod *oh)

return 0;
}

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

static inline void omap242x_mmc_mux(struct omap_mmc_platform_data
*mmc_controller)
{
if ((mmc_controller->slots[0].switch_pin > 0) && \
(mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES))
omap_mux_init_gpio(mmc_controller->slots[0].switch_pin,
OMAP_PIN_INPUT_PULLUP);
if ((mmc_controller->slots[0].gpio_wp > 0) && \
(mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES))
omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp,
OMAP_PIN_INPUT_PULLUP);

omap_mux_init_signal("sdmmc_cmd", 0);
omap_mux_init_signal("sdmmc_clki", 0);
omap_mux_init_signal("sdmmc_clko", 0);
omap_mux_init_signal("sdmmc_dat0", 0);
omap_mux_init_signal("sdmmc_dat_dir0", 0);
omap_mux_init_signal("sdmmc_cmd_dir", 0);
if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) {
omap_mux_init_signal("sdmmc_dat1", 0);
omap_mux_init_signal("sdmmc_dat2", 0);
omap_mux_init_signal("sdmmc_dat3", 0);
omap_mux_init_signal("sdmmc_dat_dir1", 0);
omap_mux_init_signal("sdmmc_dat_dir2", 0);
omap_mux_init_signal("sdmmc_dat_dir3", 0);
}

/*
* Use internal loop-back in MMC/SDIO Module Input Clock
* selection
*/
if (mmc_controller->slots[0].internal_clock) {
u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
v |= (1 << 24);
omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
}
}

void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
{
struct platform_device *pdev;
struct omap_hwmod *oh;
int id = 0;
char *oh_name = "msdi1";
char *dev_name = "mmci-omap";

if (!mmc_data[0]) {
pr_err("%s fails: Incomplete platform data\n", __func__);
return;
}

omap242x_mmc_mux(mmc_data[0]);

oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
return;
}
pdev = omap_device_build(dev_name, id, oh, mmc_data[0],
sizeof(struct omap_mmc_platform_data), NULL, 0, 0);
if (IS_ERR(pdev))
WARN(1, "Can'd build omap_device for %s:%s.\n",
dev_name, oh->name);
}

#endif

0 comments on commit b955eef

Please sign in to comment.