* [PATCH] rockchip: boot_mode: find the saradc device name
@ 2020-01-25 16:19 Hugh Cole-Baker
2020-01-30 3:53 ` Kever Yang
0 siblings, 1 reply; 2+ messages in thread
From: Hugh Cole-Baker @ 2020-01-25 16:19 UTC (permalink / raw)
To: u-boot
adc_channel_single_shot() requires the full device name e.g.
"saradc at ff100000", which differs between Rockchip SoC's, but they all
share the prefix "saradc"; find the ADC device with this name prefix and
use its full name.
Signed-off-by: Hugh Cole-Baker <sigmaris@gmail.com>
---
I previously sent this on Jan. 11 as an RFC patch, since there were no
comments on it previously I guess it can just be submitted as a patch
as-is.
arch/arm/mach-rockchip/boot_mode.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-rockchip/boot_mode.c b/arch/arm/mach-rockchip/boot_mode.c
index 08f80bd91a..7598fe4c43 100644
--- a/arch/arm/mach-rockchip/boot_mode.c
+++ b/arch/arm/mach-rockchip/boot_mode.c
@@ -7,6 +7,8 @@
#include <adc.h>
#include <asm/io.h>
#include <asm/arch-rockchip/boot_mode.h>
+#include <dm/device.h>
+#include <dm/uclass.h>
#if (CONFIG_ROCKCHIP_BOOT_MODE_REG == 0)
@@ -35,8 +37,26 @@ void set_back_to_bootrom_dnl_flag(void)
__weak int rockchip_dnl_key_pressed(void)
{
unsigned int val;
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
- if (adc_channel_single_shot("saradc", 1, &val)) {
+ ret = uclass_get(UCLASS_ADC, &uc);
+ if (ret)
+ return false;
+
+ ret = -ENODEV;
+ uclass_foreach_dev(dev, uc) {
+ if (!strncmp(dev->name, "saradc", 6)) {
+ ret = adc_channel_single_shot(dev->name, 1, &val);
+ break;
+ }
+ }
+
+ if (ret == -ENODEV) {
+ pr_warn("%s: no saradc device found\n", __func__);
+ return false;
+ } else if (ret) {
pr_err("%s: adc_channel_single_shot fail!\n", __func__);
return false;
}
--
2.17.2 (Apple Git-113)
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] rockchip: boot_mode: find the saradc device name
2020-01-25 16:19 [PATCH] rockchip: boot_mode: find the saradc device name Hugh Cole-Baker
@ 2020-01-30 3:53 ` Kever Yang
0 siblings, 0 replies; 2+ messages in thread
From: Kever Yang @ 2020-01-30 3:53 UTC (permalink / raw)
To: u-boot
On 2020/1/26 上午12:19, Hugh Cole-Baker wrote:
> adc_channel_single_shot() requires the full device name e.g.
> "saradc at ff100000", which differs between Rockchip SoC's, but they all
> share the prefix "saradc"; find the ADC device with this name prefix and
> use its full name.
>
> Signed-off-by: Hugh Cole-Baker <sigmaris@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Thanks,
- Kever
> ---
> I previously sent this on Jan. 11 as an RFC patch, since there were no
> comments on it previously I guess it can just be submitted as a patch
> as-is.
>
> arch/arm/mach-rockchip/boot_mode.c | 22 +++++++++++++++++++++-
> 1 file changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-rockchip/boot_mode.c b/arch/arm/mach-rockchip/boot_mode.c
> index 08f80bd91a..7598fe4c43 100644
> --- a/arch/arm/mach-rockchip/boot_mode.c
> +++ b/arch/arm/mach-rockchip/boot_mode.c
> @@ -7,6 +7,8 @@
> #include <adc.h>
> #include <asm/io.h>
> #include <asm/arch-rockchip/boot_mode.h>
> +#include <dm/device.h>
> +#include <dm/uclass.h>
>
> #if (CONFIG_ROCKCHIP_BOOT_MODE_REG == 0)
>
> @@ -35,8 +37,26 @@ void set_back_to_bootrom_dnl_flag(void)
> __weak int rockchip_dnl_key_pressed(void)
> {
> unsigned int val;
> + struct udevice *dev;
> + struct uclass *uc;
> + int ret;
>
> - if (adc_channel_single_shot("saradc", 1, &val)) {
> + ret = uclass_get(UCLASS_ADC, &uc);
> + if (ret)
> + return false;
> +
> + ret = -ENODEV;
> + uclass_foreach_dev(dev, uc) {
> + if (!strncmp(dev->name, "saradc", 6)) {
> + ret = adc_channel_single_shot(dev->name, 1, &val);
> + break;
> + }
> + }
> +
> + if (ret == -ENODEV) {
> + pr_warn("%s: no saradc device found\n", __func__);
> + return false;
> + } else if (ret) {
> pr_err("%s: adc_channel_single_shot fail!\n", __func__);
> return false;
> }
^ permalink raw reply [flat|nested] 2+ messages in thread
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