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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 13:46:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 13:46:56 -0700
commit7b6181e06841f5ad15c4ff708b967b4db65a64de (patch)
treebdfcf5b74b692f76581156e452d268b64c795200 /arch/arm/mach-omap2/board-omap3beagle.c
parent72e58063d63c5f0a7bf65312f1e3a5ed9bb5c2ff (diff)
parentbc487fb341af05120bccb9f59ce76302391dcc77 (diff)
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (163 commits) omap: complete removal of machine_desc.io_pg_offst and .phys_io omap: UART: fix wakeup registers for OMAP24xx UART2 omap: Fix spotty MMC voltages ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h serial: omap-serial: fix signess error OMAP3: DMA: Errata i541: sDMA FIFO draining does not finish omap: dma: Fix buffering disable bit setting for omap24xx omap: serial: Fix the boot-up crash/reboot without CONFIG_PM OMAP3: PM: fix scratchpad memory accesses for off-mode omap4: pandaboard: enable the ehci port on pandaboard omap4: pandaboard: Fix the init if CONFIG_MMC_OMAP_HS is not set omap4: pandaboard: remove unused hsmmc definition OMAP: McBSP: Remove null omap44xx ops comment OMAP: McBSP: Swap CLKS source definition OMAP: McBSP: Fix CLKR and FSR signal muxing OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks OMAP: control: move plat-omap/control.h to mach-omap2/control.h OMAP: split plat-omap/common.c OMAP: McBSP: implement functional clock switching via clock framework OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c ... Fixed up trivial conflicts in arch/arm/mach-omap2/ {board-zoom-peripherals.c,devices.c} as per Tony
Diffstat (limited to 'arch/arm/mach-omap2/board-omap3beagle.c')
-rw-r--r--arch/arm/mach-omap2/board-omap3beagle.c106
1 files changed, 102 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 9d9f5b881ee8..14f42240ae79 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -27,6 +27,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
+#include <linux/mmc/host.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
@@ -43,13 +44,100 @@
#include <plat/gpmc.h>
#include <plat/nand.h>
#include <plat/usb.h>
-#include <plat/timer-gp.h>
#include "mux.h"
#include "hsmmc.h"
+#include "timer-gp.h"
#define NAND_BLOCK_SIZE SZ_128K
+/*
+ * OMAP3 Beagle revision
+ * Run time detection of Beagle revision is done by reading GPIO.
+ * GPIO ID -
+ * 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
+ */
+enum {
+ OMAP3BEAGLE_BOARD_UNKN = 0,
+ OMAP3BEAGLE_BOARD_AXBX,
+ OMAP3BEAGLE_BOARD_C1_3,
+ OMAP3BEAGLE_BOARD_C4,
+ OMAP3BEAGLE_BOARD_XM,
+};
+
+static u8 omap3_beagle_version;
+
+static u8 omap3_beagle_get_rev(void)
+{
+ return omap3_beagle_version;
+}
+
+static void __init omap3_beagle_init_rev(void)
+{
+ int ret;
+ u16 beagle_rev = 0;
+
+ omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
+ omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
+ omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
+
+ ret = gpio_request(171, "rev_id_0");
+ if (ret < 0)
+ goto fail0;
+
+ ret = gpio_request(172, "rev_id_1");
+ if (ret < 0)
+ goto fail1;
+
+ ret = gpio_request(173, "rev_id_2");
+ if (ret < 0)
+ goto fail2;
+
+ gpio_direction_input(171);
+ gpio_direction_input(172);
+ gpio_direction_input(173);
+
+ beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
+ | (gpio_get_value(173) << 2);
+
+ switch (beagle_rev) {
+ case 7:
+ printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
+ break;
+ case 6:
+ printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
+ break;
+ case 5:
+ printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
+ break;
+ case 0:
+ printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
+ break;
+ default:
+ printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
+ }
+
+ return;
+
+fail2:
+ gpio_free(172);
+fail1:
+ gpio_free(171);
+fail0:
+ printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
+ omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
+
+ return;
+}
+
static struct mtd_partition omap3beagle_nand_partitions[] = {
/* All the partition sizes are listed in terms of NAND block size */
{
@@ -166,7 +254,7 @@ static void __init beagle_display_init(void)
static struct omap2_hsmmc_info mmc[] = {
{
.mmc = 1,
- .wires = 8,
+ .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
.gpio_wp = 29,
},
{} /* Terminator */
@@ -185,7 +273,10 @@ static struct gpio_led gpio_leds[];
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
- if (system_rev >= 0x20 && system_rev <= 0x34301000) {
+ 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 {
@@ -322,13 +413,19 @@ static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
},
};
+static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
+ {
+ I2C_BOARD_INFO("eeprom", 0x50),
+ },
+};
+
static int __init omap3_beagle_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
ARRAY_SIZE(beagle_i2c_boardinfo));
/* Bus 3 is attached to the DVI port where devices like the pico DLP
* projector don't work reliably with 400kHz */
- omap_register_i2c_bus(3, 100, NULL, 0);
+ omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
return 0;
}
@@ -464,6 +561,7 @@ static struct omap_musb_board_data musb_board_data = {
static void __init omap3_beagle_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+ omap3_beagle_init_rev();
omap3_beagle_i2c_init();
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));