Commit fa8df623 authored by Tony Lindgren's avatar Tony Lindgren

Add support for N810 internal MMC. Adapted from Nokia

Maemo sources kernel-source-rx-34-2.6.21.0 with Menelaus
changes left out for now.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 9e0e45e6
......@@ -19,14 +19,20 @@
#ifdef CONFIG_MMC_OMAP
static const int slot_switch_gpio = 96;
static const int n810_slot2_pw_vddf = 23;
static const int n810_slot2_pw_vdd = 9;
static int slot1_cover_open;
static int slot2_cover_open;
static struct device *mmc_device;
/*
* VMMC --> slot 1
* VDCDC3_APE, VMCS2_APE --> slot 2
* VMMC --> slot 1 (N800 & N810)
* VDCDC3_APE, VMCS2_APE --> slot 2 on N800
* GPIO96 --> Menelaus GPIO2
* GPIO23 --> controls slot2 VSD (N810 only)
* GPIO9 --> controls slot2 VIO_SD (N810 only)
*/
static int n800_mmc_switch_slot(struct device *dev, int slot)
......@@ -41,8 +47,8 @@ static int n800_mmc_switch_slot(struct device *dev, int slot)
return 0;
}
static int n800_mmc_set_power(struct device *dev, int slot, int power_on,
int vdd)
static int n800_mmc_set_power_menelaus(struct device *dev, int slot,
int power_on, int vdd)
{
int mV;
......@@ -110,14 +116,42 @@ static int n800_mmc_set_power(struct device *dev, int slot, int power_on,
return 0;
}
static void nokia_mmc_set_power_internal(struct device *dev,
int power_on)
{
dev_dbg(dev, "Set internal slot power %s\n",
power_on ? "on" : "off");
if (power_on) {
omap_set_gpio_dataout(n810_slot2_pw_vddf, 1);
udelay(30);
omap_set_gpio_dataout(n810_slot2_pw_vdd, 1);
udelay(100);
} else {
omap_set_gpio_dataout(n810_slot2_pw_vdd, 0);
msleep(50);
omap_set_gpio_dataout(n810_slot2_pw_vddf, 0);
msleep(50);
}
}
static int n800_mmc_set_power(struct device *dev, int slot, int power_on,
int vdd)
{
if (machine_is_nokia_n800() || slot == 0)
return n800_mmc_set_power_menelaus(dev, slot, power_on, vdd);
nokia_mmc_set_power_internal(dev, power_on);
return 0;
}
static int n800_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
{
int r;
#ifdef CONFIG_MMC_DEBUG
dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
#endif
BUG_ON(slot != 0 && slot != 1);
slot++;
switch (bus_mode) {
......@@ -136,24 +170,6 @@ static int n800_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
return r;
}
#if 0
static int n800_mmc_get_ro(struct device *dev, int slot)
{
int ro;
slot++;
if (slot == 1)
ro = omap_get_gpio_datain(slot1_wp_gpio);
else
ro = omap_get_gpio_datain(slot2_wp_gpio);
#ifdef CONFIG_MMC_DEBUG
dev_dbg(dev, "Get RO slot %d: %s\n",
slot, ro ? "read-only" : "read-write");
#endif
return ro;
}
#endif
static int n800_mmc_get_cover_state(struct device *dev, int slot)
{
slot++;
......@@ -172,6 +188,10 @@ static void n800_mmc_callback(void *data, u8 card_mask)
bit = 1 << 1;
openp = &slot2_cover_open;
index = 1;
} else {
bit = 1;
openp = &slot1_cover_open;
index = 0;
}
if (card_mask & bit)
......@@ -182,18 +202,19 @@ static void n800_mmc_callback(void *data, u8 card_mask)
omap_mmc_notify_cover_event(mmc_device, index, *openp);
}
void n800_mmc_slot1_cover_handler(void *arg, int state)
void n800_mmc_slot1_cover_handler(void *arg, int closed_state)
{
if (mmc_device == NULL)
return;
slot1_cover_open = !state;
omap_mmc_notify_cover_event(mmc_device, 0, state);
slot1_cover_open = !closed_state;
omap_mmc_notify_cover_event(mmc_device, 0, closed_state);
}
static int n800_mmc_late_init(struct device *dev)
{
int r, bit, *openp;
int vs2sel;
mmc_device = dev;
......@@ -201,10 +222,22 @@ static int n800_mmc_late_init(struct device *dev)
if (r < 0)
return r;
if (machine_is_nokia_n800())
vs2sel = 0;
else
vs2sel = 2;
r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
if (r < 0)
return r;
n800_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
n800_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
r = menelaus_set_mmc_slot(1, 1, 0, 1);
if (r < 0)
return r;
r = menelaus_set_mmc_slot(2, 1, 0, 1);
r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
if (r < 0)
return r;
......@@ -215,6 +248,10 @@ static int n800_mmc_late_init(struct device *dev)
if (machine_is_nokia_n800()) {
bit = 1 << 1;
openp = &slot2_cover_open;
} else {
bit = 1;
openp = &slot1_cover_open;
slot2_cover_open = 0;
}
/* All slot pin bits seem to be inversed until first swith change */
......@@ -231,9 +268,29 @@ static int n800_mmc_late_init(struct device *dev)
return r;
}
static void n800_mmc_shutdown(struct device *dev)
{
int vs2sel;
if (machine_is_nokia_n800())
vs2sel = 0;
else
vs2sel = 2;
menelaus_set_mmc_slot(1, 0, 0, 0);
menelaus_set_mmc_slot(2, 0, vs2sel, 0);
}
static void n800_mmc_cleanup(struct device *dev)
{
menelaus_unregister_mmc_callback();
omap_free_gpio(slot_switch_gpio);
if (machine_is_nokia_n810()) {
omap_free_gpio(n810_slot2_pw_vddf);
omap_free_gpio(n810_slot2_pw_vdd);
}
}
static struct omap_mmc_platform_data n800_mmc_data = {
......@@ -241,14 +298,15 @@ static struct omap_mmc_platform_data n800_mmc_data = {
.switch_slot = n800_mmc_switch_slot,
.init = n800_mmc_late_init,
.cleanup = n800_mmc_cleanup,
.shutdown = n800_mmc_shutdown,
.max_freq = 24000000,
.slots[0] = {
.set_power = n800_mmc_set_power,
.set_bus_mode = n800_mmc_set_bus_mode,
.get_ro = NULL,
.get_cover_state= n800_mmc_get_cover_state,
.ocr_mask = MMC_VDD_165_195 |
MMC_VDD_28_29 | MMC_VDD_30_31 |
MMC_VDD_32_33 | MMC_VDD_33_34,
.ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
MMC_VDD_32_33 | MMC_VDD_33_34,
.name = "internal",
},
.slots[1] = {
......@@ -266,14 +324,39 @@ static struct omap_mmc_platform_data n800_mmc_data = {
};
void __init n800_mmc_init(void)
{
if (machine_is_nokia_n810()) {
n800_mmc_data.slots[0].name = "external";
/*
* Some Samsung Movinand chips do not like open-ended
* multi-block reads and fall to braind-dead state
* while doing so. Reducing the number of blocks in
* the transfer or delays in clock disable do not help
*/
n800_mmc_data.slots[1].name = "internal";
n800_mmc_data.slots[1].ban_openended = 1;
}
omap_set_mmc_info(1, &n800_mmc_data);
if (omap_request_gpio(slot_switch_gpio) < 0)
BUG();
omap_set_gpio_dataout(slot_switch_gpio, 0);
omap_set_gpio_direction(slot_switch_gpio, 0);
}
if (machine_is_nokia_n810()) {
if (omap_request_gpio(n810_slot2_pw_vddf) < 0)
BUG();
omap_set_gpio_dataout(n810_slot2_pw_vddf, 0);
omap_set_gpio_direction(n810_slot2_pw_vddf, 0);
if (omap_request_gpio(n810_slot2_pw_vdd) < 0)
BUG();
omap_set_gpio_dataout(n810_slot2_pw_vdd, 0);
omap_set_gpio_direction(n810_slot2_pw_vdd, 0);
}
}
#else
void __init n800_mmc_init(void)
......
......@@ -35,6 +35,7 @@ struct omap_mmc_platform_data {
* not supported */
int (* init)(struct device *dev);
void (* cleanup)(struct device *dev);
void (* shutdown)(struct device *dev);
/* To handle board related suspend/resume functionality for MMC */
int (*suspend)(struct device *dev, int slot);
......@@ -59,6 +60,9 @@ struct omap_mmc_platform_data {
/* Card detection IRQs */
int card_detect_irq;
int (* card_detect)(int irq);
unsigned int ban_openended:1;
} slots[OMAP_MMC_MAX_SLOTS];
};
......
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