于 2012年07月10日 23:34, Arnd Bergmann 写道:
On Tuesday 10 July 2012, Tony Lindgren wrote:
The following changes since commit 6887a4131da3adaab011613776d865f4bcfb5678:
Linux 3.5-rc5 (2012-06-30 16:08:57 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap tags/omap-devel-board-for-v3.6
for you to fetch changes up to b103a2e22a238085f5c50d96345e1a09bb1efd50:
ARM: OMAP3: Fix omap3evm randconfig error introduced by VBUS support (2012-07-09 23:22:24 -0700)
----------------------------------------------------------------
Board and platform data related changes for omaps
----------------------------------------------------------------
Andy Gross (1):
omap2+: add drm device
Dmitry Lifshitz (2):
ARM: OMAP3: cm-t35: add mt9t001 camera sensor support
ARM: OMAP3: cm-t35: add tvp5150 decoder support
Peter Ujfalusi (2):
ARM: OMAP: board-4430sdp: MUX configuration for sys_nirq2
ARM: OMAP: board-omap4panda: MUX configuration for sys_nirq2
Tony Lindgren (1):
ARM: OMAP3: Fix omap3evm randconfig error introduced by VBUS support
Zumeng Chen (4):
ARM: OMAP3EVM: Add NAND flash definition
ARM: OMAP3EVM: Adding USB internal LDOs board file
ARM: omap3evm: enable VBUS switch for EHCI tranceiver
ARM: OMAP3530evm: set pendown_state and debounce time for ads7846
diff --cc arch/arm/mach-omap2/common-board-devices.c
I got a conflict in arch/arm/mach-omap2/common-board-devices.c between
16aced80f6739 "ARM: OMAP3530evm: set pendown_state and debounce time for
ads7846" and 97ee9f01d6f26 "ARM: OMAP: fix the ads7846 init code",
see my resolution below.
Please check if what I have in the for-next branch makese sense to you
all.
No problem, many thanks Arnd for your information.
I'll check it, test it, and send you feedback.
Regards,
Zumeng
Arnd
* Unmerged path arch/arm/mach-omap2/common-board-devices.c
diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index 1706ebc..1473474 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -35,6 +35,16 @@ static struct omap2_mcspi_device_config ads7846_mcspi_config = {
.turbo_mode = 0,
};
+/*
+ * ADS7846 driver maybe request a gpio according to the value
+ * of pdata->get_pendown_state, but we have done this. So set
+ * get_pendown_state to avoid twice gpio requesting.
+ */
+static int omap3_get_pendown_state(void)
+{
+ return !gpio_get_value(OMAP3_EVM_TS_GPIO);
+}
+
static struct ads7846_platform_data ads7846_config = {
.x_max = 0x0fff,
.y_max = 0x0fff,
@@ -45,6 +55,7 @@ static struct ads7846_platform_data ads7846_config = {
.debounce_rep = 1,
.gpio_pendown = -EINVAL,
.keep_vref_on = 1,
+ .get_pendown_state =&omap3_get_pendown_state,
};
static struct spi_board_info ads7846_spi_board_info __initdata = {
@@ -63,28 +74,30 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
struct spi_board_info *spi_bi =&ads7846_spi_board_info;
int err;
- if (board_pdata&& board_pdata->get_pendown_state) {
- err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
- if (err) {
- pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
- return;
- }
- gpio_export(gpio_pendown, 0);
-
- if (gpio_debounce)
- gpio_set_debounce(gpio_pendown, gpio_debounce);
+ err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
+ if (err) {
+ pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
+ return;
}
+ if (gpio_debounce)
+ gpio_set_debounce(gpio_pendown, gpio_debounce);
+
spi_bi->bus_num = bus_num;
spi_bi->irq = gpio_to_irq(gpio_pendown);
if (board_pdata) {
board_pdata->gpio_pendown = gpio_pendown;
spi_bi->platform_data = board_pdata;
+ if (board_pdata->get_pendown_state)
+ gpio_export(gpio_pendown, 0);
} else {
ads7846_config.gpio_pendown = gpio_pendown;
}
+ if (!board_pdata || (board_pdata&& !board_pdata->get_pendown_state))
+ gpio_free(gpio_pendown);
+
spi_register_board_info(&ads7846_spi_board_info, 1);
}
#else
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