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-   -   OMAP3: beagle: add support for beagleboard xM revision C (http://www.linux-archive.org/ubuntu-kernel-team/618916-omap3-beagle-add-support-beagleboard-xm-revision-c.html)

Paolo Pisati 01-09-2012 10:09 AM

OMAP3: beagle: add support for beagleboard xM revision C
 
From: Joel A Fernandes <joelagnel@ti.com>

OMAP3: beagle: add support for beagleboard xM revision C

The USB enable GPIO has been in beagleboard xM revision C.
The USER button has been moved since beagleboard xM.
Also, board specific initialization has been moved to beagle_config struct
and initialized in omap3_beagle_init_rev. Default values in struct are for xMC.

Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Acked-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
(cherry picked from commit 5fe8b4c19dc24e3bb873daf9e96a2439a83bbd79)

BugLink: http://bugs.launchpad.net/bugs/912199

Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>
---
arch/arm/mach-omap2/board-omap3beagle.c | 78 ++++++++++++++++++++-----------
1 files changed, 51 insertions(+), 27 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 04dad29..7e62818 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -61,7 +61,8 @@
* AXBX = GPIO173, GPIO172, GPIO171: 1 1 1
* C1_3 = GPIO173, GPIO172, GPIO171: 1 1 0
* C4 = GPIO173, GPIO172, GPIO171: 1 0 1
- * XM = GPIO173, GPIO172, GPIO171: 0 0 0
+ * XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
+ * XMC = GPIO173, GPIO172, GPIO171: 0 1 0
*/
enum {
OMAP3BEAGLE_BOARD_UNKN = 0,
@@ -69,14 +70,26 @@ enum {
OMAP3BEAGLE_BOARD_C1_3,
OMAP3BEAGLE_BOARD_C4,
OMAP3BEAGLE_BOARD_XM,
+ OMAP3BEAGLE_BOARD_XMC,
};

static u8 omap3_beagle_version;

-static u8 omap3_beagle_get_rev(void)
-{
- return omap3_beagle_version;
-}
+/*
+ * Board-specific configuration
+ * Defaults to BeagleBoard-xMC
+ */
+static struct {
+ int mmc1_gpio_wp;
+ int usb_pwr_level;
+ int reset_gpio;
+ int usr_button_gpio;
+} beagle_config = {
+ .mmc1_gpio_wp = -EINVAL,
+ .usb_pwr_level = GPIOF_OUT_INIT_LOW,
+ .reset_gpio = 129,
+ .usr_button_gpio = 4,
+};

static struct gpio omap3_beagle_rev_gpios[] __initdata = {
{ 171, GPIOF_IN, "rev_id_0" },
@@ -111,18 +124,32 @@ static void __init omap3_beagle_init_rev(void)
case 7:
printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx
");
omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
+ beagle_config.mmc1_gpio_wp = 29;
+ beagle_config.reset_gpio = 170;
+ beagle_config.usr_button_gpio = 7;
break;
case 6:
printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3
");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
+ beagle_config.mmc1_gpio_wp = 23;
+ beagle_config.reset_gpio = 170;
+ beagle_config.usr_button_gpio = 7;
break;
case 5:
printk(KERN_INFO "OMAP3 Beagle Rev: C4
");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
+ beagle_config.mmc1_gpio_wp = 23;
+ beagle_config.reset_gpio = 170;
+ beagle_config.usr_button_gpio = 7;
break;
case 0:
- printk(KERN_INFO "OMAP3 Beagle Rev: xM
");
+ printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx
");
omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
+ beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
+ break;
+ case 2:
+ printk(KERN_INFO "OMAP3 Beagle Rev: xM C
");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
break;
default:
printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd
", beagle_rev);
@@ -235,7 +262,7 @@ static struct omap2_hsmmc_info mmc[] = {
{
.mmc = 1,
.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
- .gpio_wp = 29,
+ .gpio_wp = -EINVAL,
},
{} /* Terminator */
};
@@ -253,17 +280,11 @@ static struct gpio_led gpio_leds[];
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
- int r, usb_pwr_level;
-
- if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
- mmc[0].gpio_wp = -EINVAL;
- } else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
- (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
- omap_mux_init_gpio(23, OMAP_PIN_INPUT);
- mmc[0].gpio_wp = 23;
- } else {
- omap_mux_init_gpio(29, OMAP_PIN_INPUT);
- }
+ int r;
+
+ if (beagle_config.mmc1_gpio_wp != -EINVAL)
+ omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
+ mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
/* gpio + 0 is "mmc0_cd" (input/IRQ) */
mmc[0].gpio_cd = gpio + 0;
omap2_hsmmc_init(mmc);
@@ -277,9 +298,8 @@ static int beagle_twl_gpio_setup(struct device *dev,
* high / others active low)
* DVI reset GPIO is different between beagle revisions
*/
- if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
- usb_pwr_level = GPIOF_OUT_INIT_HIGH;
- beagle_dvi_device.reset_gpio = 129;
+ /* Valid for all -xM revisions */
+ if (cpu_is_omap3630()) {
/*
* gpio + 1 on Xm controls the TFP410's enable line (active low)
* gpio + 2 control varies depending on the board rev as below:
@@ -297,8 +317,6 @@ static int beagle_twl_gpio_setup(struct device *dev,
pr_err("%s: unable to configure DVI_LDO_EN
",
__func__);
} else {
- usb_pwr_level = GPIOF_OUT_INIT_LOW;
- beagle_dvi_device.reset_gpio = 170;
/*
* REVISIT: need ehci-omap hooks for external VBUS
* power switch and overcurrent detect
@@ -306,8 +324,10 @@ static int beagle_twl_gpio_setup(struct device *dev,
if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
pr_err("%s: unable to configure EHCI_nOC
", __func__);
}
+ beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;

- gpio_request_one(gpio + TWL4030_GPIO_MAX, usb_pwr_level, "nEN_USB_PWR");
+ gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
+ "nEN_USB_PWR");

/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
@@ -458,7 +478,8 @@ static struct platform_device leds_gpio = {
static struct gpio_keys_button gpio_buttons[] = {
{
.code = BTN_EXTRA,
- .gpio = 7,
+ /* Dynamically assigned depending on board */
+ .gpio = -EINVAL,
.desc = "user",
.wakeup = 1,
},
@@ -525,8 +546,8 @@ static void __init beagle_opp_init(void)
return;
}

- /* Custom OPP enabled for XM */
- if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
+ /* Custom OPP enabled for all xM versions */
+ if (cpu_is_omap3630()) {
struct omap_hwmod *mh = omap_hwmod_lookup("mpu");
struct omap_hwmod *dh = omap_hwmod_lookup("iva");
struct device *dev;
@@ -566,6 +587,9 @@ static void __init omap3_beagle_init(void)
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
omap3_beagle_init_rev();
omap3_beagle_i2c_init();
+
+ gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
+
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
omap_display_init(&beagle_dss_data);
--
1.7.5.4


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