On Wednesday 21 of December 2011 at 20:08:15, Tony Lindgren wrote:
> * Janusz Krzysztofik <jkrzyszt@xxxxxxxxxxxx> [111220 13:23]:
> > 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@xxxxxxxxxxx> 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.
> >
> > Created and tested against linux-3.2-rc6.
> >
> > Signed-off-by: Janusz Krzysztofik <jkrzyszt@xxxxxxxxxxxx>
>
> Planning to apply this series. Dmitry, care to ack the drivers/input/serio/
> related change?
Don't we need Jarkko's or Mark's or Liam's ack as well for the change to
the sound/soc/omap/ams-delta.c file?
Thanks,
Janusz
> Regards,
>
> Tony
>
> > ---
> > Changes since the initial version of this patch:
> > * use late_initcall() unconditionally in modules, requested by Russell
> > King (thanks!); an updated patch 7/7 will follow,
> > * in the changelog message, move credits to Tony up a bit, since the
> > person responsible for other changes (he might not necessarily like)
> > is me, not him ;).
> >
> > Comments copied from this patch initial submission:
> > This patch was not present in the initial submission, it replaces the
> > old patch 1/10, providing an alternative solution not touching the
> > gpio-generic driver.
> >
> > arch/arm/mach-omap1/board-ams-delta.c | 28 ++++++++++++++++++++--------
> > drivers/input/serio/ams_delta_serio.c | 2 +-
> > sound/soc/omap/ams-delta.c | 2 +-
> > 3 files changed, 22 insertions(+), 10 deletions(-)
> >
> > diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
> > index b0f15d2..50987c9 100644
> > --- a/arch/arm/mach-omap1/board-ams-delta.c
> > +++ b/arch/arm/mach-omap1/board-ams-delta.c
> > @@ -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)
> > {
> > diff --git a/drivers/input/serio/ams_delta_serio.c b/drivers/input/serio/ams_delta_serio.c
> > index d4d08bd..835d37a 100644
> > --- a/drivers/input/serio/ams_delta_serio.c
> > +++ b/drivers/input/serio/ams_delta_serio.c
> > @@ -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)
> > {
> > diff --git a/sound/soc/omap/ams-delta.c b/sound/soc/omap/ams-delta.c
> > index ccb8a6a..be81bc7 100644
> > --- a/sound/soc/omap/ams-delta.c
> > +++ b/sound/soc/omap/ams-delta.c
> > @@ -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)
> > {
>
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