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ARM: OMAP1: ams-delta: register latch dependent devices later

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In preparation to converting Amstrad Delta on-board latches to
basic_mmio_gpio devices, registration of platform devices which depend
on latches and will require initialization of their GPIO pins first,
should be moved out of .machine_init down to late_initcall level, as the
gpio-generic driver is not available until device_initcall time.  The
latch reset operation, which will be replaced with GPIO initialization,
must also be moved to late_initcall for the same reason.

Since there was already another, separate arch_initcall function for
setting up one of those latch dependent devices, the on-board modem
device, reuse that function, i.e., rename it to a name that matches the
new purpose, extend with other device setup relocated from
.machine_init, and move down to the late_initcall level.

While being at it, add missing gpio_free() in case the modem platform
device registration fails.

Thanks to Tony Lindgren <tony@atomide.com> who suggested this approach
instead of shifting up the gpio-generic driver initialization.

In addition, defer registration of the Amstrad Delta ASoC and serio
devices, done from their device driver files, until late_initcall time,
as those drivers will depend on their GPIO pins already requested from
the board late_init() function until updated to register their GPIO pins
themselves.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Janusz Krzysztofik 2011-12-20 22:54:18 +01:00 committed by Tony Lindgren
parent c116abc43d
commit f7519d8c82
3 changed files with 22 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
arch/arm/mach-omap1/board-ams-delta.c
View File

@ -275,11 +275,14 @@ static struct omap1_cam_platform_data ams_delta_camera_platform_data = {
};
static struct platform_device *ams_delta_devices[] __initdata = {
&ams_delta_nand_device,
&ams_delta_kp_device,
&ams_delta_camera_device,
};
static struct platform_device *late_devices[] __initdata = {
&ams_delta_nand_device,
&ams_delta_lcd_device,
&ams_delta_led_device,
&ams_delta_camera_device,
};
static void __init ams_delta_init(void)
@ -307,9 +310,6 @@ static void __init ams_delta_init(void)
omap_serial_init();
omap_register_i2c_bus(1, 100, NULL, 0);
/* Clear latch2 (NAND, LCD, modem enable) */
ams_delta_latch2_write(~0, 0);
omap1_usb_init(&ams_delta_usb_config);
omap1_set_camera_info(&ams_delta_camera_platform_data);
#ifdef CONFIG_LEDS_TRIGGERS
@ -345,13 +345,18 @@ static struct platform_device ams_delta_modem_device = {
},
};
static int __init ams_delta_modem_init(void)
static int __init late_init(void)
{
int err;
if (!machine_is_ams_delta())
return -ENODEV;
/* Clear latch2 (NAND, LCD, modem enable) */
ams_delta_latch2_write(~0, 0);
platform_add_devices(late_devices, ARRAY_SIZE(late_devices));
omap_cfg_reg(M14_1510_GPIO2);
ams_delta_modem_ports[0].irq =
gpio_to_irq(AMS_DELTA_GPIO_PIN_MODEM_IRQ);
@ -367,9 +372,16 @@ static int __init ams_delta_modem_init(void)
AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC,
AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC);
return platform_device_register(&ams_delta_modem_device);
err = platform_device_register(&ams_delta_modem_device);
if (err)
goto gpio_free;
return 0;
gpio_free:
gpio_free(AMS_DELTA_GPIO_PIN_MODEM_IRQ);
return err;
}
arch_initcall(ams_delta_modem_init);
late_initcall(late_init);
static void __init ams_delta_map_io(void)
{

2
drivers/input/serio/ams_delta_serio.c
View File

@ -165,7 +165,7 @@ serio:
kfree(ams_delta_serio);
return err;
}
module_init(ams_delta_serio_init);
late_initcall(ams_delta_serio_init);
static void __exit ams_delta_serio_exit(void)
{

2
sound/soc/omap/ams-delta.c
View File

@ -636,7 +636,7 @@ err:
platform_device_put(ams_delta_audio_platform_device);
return ret;
}
module_init(ams_delta_module_init);
late_initcall(ams_delta_module_init);
static void __exit ams_delta_module_exit(void)
{