diff options
author | Ian Molton <spyro@f2s.com> | 2008-09-26 13:38:59 +0100 |
---|---|---|
committer | Ian Molton <spyro@f2s.com> | 2008-12-15 03:29:34 +0000 |
commit | b1ae1b7b274f67c149bee4731e38a7516c723de4 (patch) | |
tree | 9f31ef6e8fb28359f6dbc8bb7ecac2c75bce2fa1 /arch/arm/mach-pxa/eseries.c | |
parent | f4ad9a9624fafec4647e7e45469e0446586f81fb (diff) | |
download | kernel_samsung_smdk4412-b1ae1b7b274f67c149bee4731e38a7516c723de4.tar.gz kernel_samsung_smdk4412-b1ae1b7b274f67c149bee4731e38a7516c723de4.tar.bz2 kernel_samsung_smdk4412-b1ae1b7b274f67c149bee4731e38a7516c723de4.zip |
[ARM] pxa: Add multi-io support for e-series
This patchset provides support for the TMIO based IO controller used in the
Toshiba e-series PDAs.
Signed-off-by: Ian Molton <spyro@f2s.com>
Acked-by: Samuel Ortiz <sameo@openedhand.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/eseries.c')
-rw-r--r-- | arch/arm/mach-pxa/eseries.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/eseries.c b/arch/arm/mach-pxa/eseries.c index ee79e33b174..dfce7d5b659 100644 --- a/arch/arm/mach-pxa/eseries.c +++ b/arch/arm/mach-pxa/eseries.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/gpio.h> +#include <linux/delay.h> #include <linux/platform_device.h> #include <asm/setup.h> @@ -26,6 +27,7 @@ #include <mach/irda.h> #include "generic.h" +#include "clock.h" /* Only e800 has 128MB RAM */ void __init eseries_fixup(struct machine_desc *desc, @@ -86,3 +88,82 @@ struct pxaficp_platform_data e7xx_ficp_platform_data = { .shutdown = e7xx_irda_shutdown, }; +int eseries_tmio_enable(struct platform_device *dev) +{ + /* Reset - bring SUSPEND high before PCLR */ + gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0); + gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 0); + msleep(1); + gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 1); + msleep(1); + gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 1); + msleep(1); + return 0; +} + +int eseries_tmio_disable(struct platform_device *dev) +{ + gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0); + gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 0); + return 0; +} + +int eseries_tmio_suspend(struct platform_device *dev) +{ + gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0); + return 0; +} + +int eseries_tmio_resume(struct platform_device *dev) +{ + gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 1); + msleep(1); + return 0; +} + +void eseries_get_tmio_gpios(void) +{ + gpio_request(GPIO_ESERIES_TMIO_SUSPEND, NULL); + gpio_request(GPIO_ESERIES_TMIO_PCLR, NULL); + gpio_direction_output(GPIO_ESERIES_TMIO_SUSPEND, 0); + gpio_direction_output(GPIO_ESERIES_TMIO_PCLR, 0); +} + +/* TMIO controller uses the same resources on all e-series machines. */ +struct resource eseries_tmio_resources[] = { + [0] = { + .start = PXA_CS4_PHYS, + .end = PXA_CS4_PHYS + 0x1fffff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_GPIO(GPIO_ESERIES_TMIO_IRQ), + .end = IRQ_GPIO(GPIO_ESERIES_TMIO_IRQ), + .flags = IORESOURCE_IRQ, + }, +}; + +/* Some e-series hardware cannot control the 32K clock */ +static void clk_32k_dummy(struct clk *clk) +{ +} + +static const struct clkops clk_32k_dummy_ops = { + .enable = clk_32k_dummy, + .disable = clk_32k_dummy, +}; + +static struct clk tmio_dummy_clk = { + .ops = &clk_32k_dummy_ops, + .rate = 32768, +}; + +static struct clk_lookup eseries_clkregs[] = { + INIT_CLKREG(&tmio_dummy_clk, NULL, "CLK_CK32K"), +}; + +void eseries_register_clks(void) +{ + clks_register(eseries_clkregs, ARRAY_SIZE(eseries_clkregs)); +} + |