User:Oogwaymaki

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Revision as of 23:52, 25 June 2020 by Oogwaymaki (talk | contribs)
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Summary:

After following these steps:

- You'll have a Custom UBOOT (Crust ENABLED) that allows MultiBOOT Using 3 different OS's depending on key combo of volume up / volume down or none pressing on boot - You'll be able to experiment on SD Card without Touching your EMMC - You'll learn how to take a part a PINE PHONE IMAGE (most, and put each OS On one partition

=============================================================================================

All the information here, has been discussed in the open source community on web sites. I have simply developed a process on how to do this on the pine phone.

We use utilities such as Cross Compilation, Uboot, Patches, which will be credited.

First step, make sure you have a cross compiler for your Computer, for particularly the arm device, you will need to download a few packages, I assume we're using Debian Linux (if your using another OS you can find similar commands by searching on the web or to make it simpler download a docker Debian image, and install the pre-requisites which I will list here for Debian)

You an also use vagrant/virtual box VMware or other virtualization platforms.


First please install these Dependencies:

apt-get install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu build-essential autoconf libtool cmake pkg-config git python-dev swig3.0 libpcre3-dev nodejs-dev crossbuild-essential-arm64 git

The following main sources are needed:

This will download quite a few sources needed for Uboot and existing OS's available to PinePhone

https://github.com/crust-firmware/meta.git

We will also apply this patch:

https://megous.com/git/u-boot/patch/?id=0ab6225154c3d8b74f06fb3b181b52a9a64b4602

(I will attach the one I used I had to modify the above patch to work with the code.)

The crust-firmware also says you need to download the or1k compiler:

https://musl.cc/or1k-linux-musl-cross.tgz

I suggest untarring this in the /opt folder.


1. Once you have these dependency:

  1. cd /usr/src
  2. git clone https://github.com/crust-firmware/meta.git
  3. cd /usr/src/meta


Edit the following file Make file

  1. Cross compiler

CROSS_aarch64 = aarch64-linux-musl- CROSS_or1k = or1k-linux-musl-

  1. General options

DEBUG ?= 0 REPRODUCIBLE ?= 0

  1. Board selection

BOARD ?= pinebook


Example:

  1. Cross compiler

CROSS_aarch64 = /usr/bin/aarch64-linux-gnu- CROSS_or1k = /opt/or1k-linux-musl-cross/bin/or1k-linux-musl-

  1. General options

DEBUG ?= 0 REPRODUCIBLE ?= 0

  1. Board selection

BOARD ?= pinephone

  1. make

(this should take a 10-30 mins depending on speed..I hope less than 30 mins!!)

After making apply the patch..


Sites Referenced/Inspiration:

https://www.96boards.org/documentation/iot/ https://github.com/dreemurrs-embedded/Jumpdrive https://github.com/dreemurrs-embedded/Pineloader https://www.thegeekstuff.com/2014/12/patch-command-examples/ https://stackoverflow.com/questions/9980186/how-to-create-a-patch-for-a-whole-directory-to-update-it


patch from the link above to work: 

                  
Binary files /src/meta/u-boot/.git/index and ./u-boot/.git/index differ
diff -ruN /src/meta/u-boot/.git/logs/HEAD ./u-boot/.git/logs/HEAD
--- /src/meta/u-boot/.git/logs/HEAD	2020-06-23 03:16:48.487289000 +0000
+++ ./u-boot/.git/logs/HEAD	2020-06-25 23:16:49.879090000 +0000
@@ -1 +1 @@
-0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1592882208 +0000	clone: from https://github.com/crust-firmware/u-boot
+0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1593127009 +0000	clone: from https://github.com/crust-firmware/u-boot
diff -ruN /src/meta/u-boot/.git/logs/refs/heads/crust ./u-boot/.git/logs/refs/heads/crust
--- /src/meta/u-boot/.git/logs/refs/heads/crust	2020-06-23 03:16:48.487289000 +0000
+++ ./u-boot/.git/logs/refs/heads/crust	2020-06-25 23:16:49.879090000 +0000
@@ -1 +1 @@
-0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1592882208 +0000	clone: from https://github.com/crust-firmware/u-boot
+0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1593127009 +0000	clone: from https://github.com/crust-firmware/u-boot
diff -ruN /src/meta/u-boot/.git/logs/refs/remotes/origin/HEAD ./u-boot/.git/logs/refs/remotes/origin/HEAD
--- /src/meta/u-boot/.git/logs/refs/remotes/origin/HEAD	2020-06-23 03:16:48.486289000 +0000
+++ ./u-boot/.git/logs/refs/remotes/origin/HEAD	2020-06-25 23:16:49.878090000 +0000
@@ -1 +1 @@
-0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1592882208 +0000	clone: from https://github.com/crust-firmware/u-boot
+0000000000000000000000000000000000000000 139397e64e17241f74dad09ea850c1edbb75d803 root <root@dd0f8cc09d17.(none)> 1593127009 +0000	clone: from https://github.com/crust-firmware/u-boot
Binary files /src/meta/u-boot/.git/objects/pack/pack-3218e3429c37fdc4cecbad96d991289088857a99.idx and ./u-boot/.git/objects/pack/pack-3218e3429c37fdc4cecbad96d991289088857a99.idx differ
Binary files /src/meta/u-boot/.git/objects/pack/pack-3218e3429c37fdc4cecbad96d991289088857a99.pack and ./u-boot/.git/objects/pack/pack-3218e3429c37fdc4cecbad96d991289088857a99.pack differ
Binary files /src/meta/u-boot/.git/objects/pack/pack-4226e7694f44c85876868652dfd7446a40535fd4.idx and ./u-boot/.git/objects/pack/pack-4226e7694f44c85876868652dfd7446a40535fd4.idx differ
Binary files /src/meta/u-boot/.git/objects/pack/pack-4226e7694f44c85876868652dfd7446a40535fd4.pack and ./u-boot/.git/objects/pack/pack-4226e7694f44c85876868652dfd7446a40535fd4.pack differ
diff -ruN /src/meta/u-boot/board/pinephonevolume.patch ./u-boot/board/pinephonevolume.patch
--- /src/meta/u-boot/board/pinephonevolume.patch	2020-06-25 08:40:08.398880000 +0000
+++ ./u-boot/board/pinephonevolume.patch	1970-01-01 00:00:00.000000000 +0000
@@ -1,179 +0,0 @@
-bplist00?_WebMainResource?
-

 _ebResourceTextEncodingName^WebResourceURL_WebResourceFrameName_WebResourceData_WebResourceMIMETypeUUTF-8_Phttps://megous.com/git/u-boot/patch/?id=0ab6225154c3d8b74f06fb3b181b52a9a64b4602PO?<html><head></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">From 0ab6225154c3d8b74f06fb3b181b52a9a64b4602 Mon Sep 17 00:00:00 2001
-From: Ondrej Jirman
-Date: Tue, 11 Feb 2020 14:10:05 +0100
-Subject: pinephone: Add volume_key environment variable
-
-When the user has a volume key pressed volume_key variable will
-contain either value 'down' or 'up', otherwise it will be empty.
-
-Signed-off-by: Ondrej Jirman <megous@megous.com>
----
- board/sunxi/Makefile |  1 +
- board/sunxi/board.c  | 18 ++++++++++++
- board/sunxi/lradc.c  | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++
- board/sunxi/lradc.h  | 11 +++++++
- 4 files changed, 111 insertions(+)
- create mode 100644 board/sunxi/lradc.c
- create mode 100644 board/sunxi/lradc.h
-
-diff --git a/board/sunxi/Makefile b/board/sunxi/Makefile
-index c4e13f8c38..6a8a2f5b42 100644
---- a/board/sunxi/Makefile
-+++ b/board/sunxi/Makefile
-@@ -11,3 +11,4 @@ obj-$(CONFIG_SUN7I_GMAC)	+= gmac.o
- obj-$(CONFIG_MACH_SUN4I)	+= dram_sun4i_auto.o
- obj-$(CONFIG_MACH_SUN5I)	+= dram_sun5i_auto.o
- obj-$(CONFIG_MACH_SUN7I)	+= dram_sun5i_auto.o
-+obj-$(CONFIG_MACH_SUN50I)	+= lradc.o
-diff --git a/board/sunxi/board.c b/board/sunxi/board.c
-index 6de4b53b11..2bedf7a16a 100644
---- a/board/sunxi/board.c
-+++ b/board/sunxi/board.c
-@@ -39,6 +39,7 @@
- #include <spl.h>
- #include <sy8106a.h>
- #include <asm/setup.h>
-+#include "lradc.h"
- 
- #if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD)
- /* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */
-@@ -622,6 +623,12 @@ void sunxi_board_init(void)
- {
- 	int power_failed = 0;
- 
-+#ifdef CONFIG_MACH_SUN50I
-+	// we init the lradc in SPL to get the ADC started early to have
-+	// a valid sample when U-Boot main binary gets executed.
-+	lradc_enable();
-+#endif
-+
- #ifdef CONFIG_PINEPHONE_LEDS
- 	/* PD18:G PD19:R PD20:B */
- 	gpio_request(SUNXI_GPD(18), "led:green");
-@@ -905,6 +912,17 @@ int misc_init_r(void)
- 		env_set("mmc_bootdev", "1");
- 	}
- 
-+#ifdef CONFIG_MACH_SUN50I
-+	int key = lradc_get_pressed_key();
-+	if (key == KEY_VOLUMEDOWN)
-+		env_set("volume_key", "down");
-+	else if (key == KEY_VOLUMEUP)
-+		env_set("volume_key", "up");
-+	
-+	// no longer needed
-+	lradc_disable();
-+#endif
-+
- 	setup_environment(gd->fdt_blob);
- 
- #ifdef CONFIG_USB_ETHER
-diff --git a/board/sunxi/lradc.c b/board/sunxi/lradc.c
-new file mode 100644
-index 0000000000..693b198e25
---- /dev/null
-+++ b/board/sunxi/lradc.c
-@@ -0,0 +1,81 @@
-+#include <common.h>
-+#include <asm/io.h>
-+#include "lradc.h"
-+
-+#define LRADC_BASE		0x1c21800
-+
-+#define LRADC_CTRL		(LRADC_BASE + 0x00)
-+#define LRADC_INTC		(LRADC_BASE + 0x04)
-+#define LRADC_INTS		(LRADC_BASE + 0x08)
-+#define LRADC_DATA0		(LRADC_BASE + 0x0c)
-+#define LRADC_DATA1		(LRADC_BASE + 0x10)
-+
-+/* LRADC_CTRL bits */
-+#define FIRST_CONVERT_DLY(x)	((x) << 24) /* 8 bits */
-+#define CHAN_SELECT(x)		((x) << 22) /* 2 bits */
-+#define CONTINUE_TIME_SEL(x)	((x) << 16) /* 4 bits */
-+#define KEY_MODE_SEL(x)		((x) << 12) /* 2 bits */
-+#define LEVELA_B_CNT(x)		((x) << 8)  /* 4 bits */
-+#define HOLD_KEY_EN(x)		((x) << 7)
-+#define HOLD_EN(x)		((x) << 6)
-+#define LEVELB_VOL(x)		((x) << 4)  /* 2 bits */
-+#define SAMPLE_RATE(x)		((x) << 2)  /* 2 bits */
-+#define ENABLE(x)		((x) << 0)
-+
-+/* LRADC_INTC and LRADC_INTS bits */
-+#define CHAN1_KEYUP_IRQ		BIT(12)
-+#define CHAN1_ALRDY_HOLD_IRQ	BIT(11)
-+#define CHAN1_HOLD_IRQ		BIT(10)
-+#define	CHAN1_KEYDOWN_IRQ	BIT(9)
-+#define CHAN1_DATA_IRQ		BIT(8)
-+#define CHAN0_KEYUP_IRQ		BIT(4)
-+#define CHAN0_ALRDY_HOLD_IRQ	BIT(3)
-+#define CHAN0_HOLD_IRQ		BIT(2)
-+#define	CHAN0_KEYDOWN_IRQ	BIT(1)
-+#define CHAN0_DATA_IRQ		BIT(0)
-+
-+// this is for PinePhone only
-+
-+int lradc_get_pressed_key(void)
-+{
-+	uint32_t val;
-+	uint32_t vref = 3000000 * 2 / 3;
-+
-+	val = readl(LRADC_DATA0) & 0x3f;
-+	val = val * vref / 63;
-+
-+//	printf("lradc=%u\n", val);
-+
-+	if (val < 200000) // 158730
-+		return KEY_VOLUMEUP;
-+	else if (val < 400000) // 349206
-+		return KEY_VOLUMEDOWN;
-+
-+	return 0;
-+}
-+
-+void lradc_enable(void)
-+{
-+	// aldo3 is always on and defaults to 3V
-+
-+	writel(0xffffffff, LRADC_INTS);
-+	writel(0, LRADC_INTC);
-+
-+	/*
-+	 * Set sample time to 4 ms / 250 Hz. Wait 2 * 4 ms for key to
-+	 * stabilize on press, wait (1 + 1) * 4 ms for key release
-+	 */
-+	writel(FIRST_CONVERT_DLY(0) | LEVELA_B_CNT(0) | HOLD_EN(0) |
-+		SAMPLE_RATE(0) | ENABLE(1), LRADC_CTRL);
-+
-+}
-+
-+void lradc_disable(void)
-+{
-+	writel(0xffffffff, LRADC_INTS);
-+	writel(0, LRADC_INTC);
-+
-+	/* Disable lradc, leave other settings unchanged */
-+	writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) |
-+		SAMPLE_RATE(2), LRADC_CTRL);
-+}
-diff --git a/board/sunxi/lradc.h b/board/sunxi/lradc.h
-new file mode 100644
-index 0000000000..c908401b5b
---- /dev/null
-+++ b/board/sunxi/lradc.h
-@@ -0,0 +1,11 @@
-+#pragma once
-+
-+enum {
-+	KEY_NONE = 0,
-+	KEY_VOLUMEDOWN = 1,
-+	KEY_VOLUMEUP = 2,
-+};
-+
-+int lradc_get_pressed_key(void);
-+void lradc_enable(void);
-+void lradc_disable(void);
--- 
-cgit v1.2.3
-
-

</body></html>Ztext/plain

? (FUl~????? \ No newline at end of file diff -ruN /src/meta/u-boot/board/sunxi/Makefile ./u-boot/board/sunxi/Makefile --- /src/meta/u-boot/board/sunxi/Makefile 2020-06-25 08:41:18.140731000 +0000 +++ ./u-boot/board/sunxi/Makefile 2020-06-25 23:16:52.460090000 +0000 @@ -11,4 +11,3 @@ 

obj-$(CONFIG_MACH_SUN4I)	+= dram_sun4i_auto.o
obj-$(CONFIG_MACH_SUN5I)	+= dram_sun5i_auto.o
obj-$(CONFIG_MACH_SUN7I)	+= dram_sun5i_auto.o

-obj-$(CONFIG_MACH_SUN50I) += lradc.o diff -ruN /src/meta/u-boot/board/sunxi/board.c ./u-boot/board/sunxi/board.c --- /src/meta/u-boot/board/sunxi/board.c 2020-06-25 09:02:37.104020000 +0000 +++ ./u-boot/board/sunxi/board.c 2020-06-25 23:16:52.461090000 +0000 @@ -44,10 +44,8 @@ 

#include <spl.h>
#include <sy8106a.h>
#include <asm/setup.h>

-#include "lradc.h" 

#if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD)

- 

/* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */
int soft_i2c_gpio_sda;
int soft_i2c_gpio_scl;

@@ -641,10 +639,6 @@ 

void sunxi_board_init(void)
{
	int power_failed = 0;

-#ifdef CONFIG_MACH_SUN50I - lradc_enable(); -#endif - 

#ifdef CONFIG_SY8106A_POWER
	power_failed = sy8106a_set_vout1(CONFIG_SY8106A_VOUT1_VOLT);

@@ -905,20 +899,6 @@ 

		env_set("fdtfile", str);
	}

- - -#ifdef CONFIG_MACH_SUN50I - int key = lradc_get_pressed_key(); - if (key == KEY_VOLUMEDOWN) - env_set("volume_key", "down"); - else if (key == KEY_VOLUMEUP) - env_set("volume_key", "up"); - - // no longer needed - lradc_disable(); -#endif - - 

	setup_environment(gd->fdt_blob);

#ifdef CONFIG_USB_ETHER

diff -ruN /src/meta/u-boot/board/sunxi/lradc.c ./u-boot/board/sunxi/lradc.c --- /src/meta/u-boot/board/sunxi/lradc.c 2020-06-25 09:12:37.560760000 +0000 +++ ./u-boot/board/sunxi/lradc.c 1970-01-01 00:00:00.000000000 +0000 @@ -1,81 +0,0 @@ -#include <common.h> -#include <asm/io.h> -#include "lradc.h" - -#define LRADC_BASE 0x1c21800 - -#define LRADC_CTRL (LRADC_BASE + 0x00) -#define LRADC_INTC (LRADC_BASE + 0x04) -#define LRADC_INTS (LRADC_BASE + 0x08) -#define LRADC_DATA0 (LRADC_BASE + 0x0c) -#define LRADC_DATA1 (LRADC_BASE + 0x10) - -/* LRADC_CTRL bits */ -#define FIRST_CONVERT_DLY(x) ((x) << 24) /* 8 bits */ -#define CHAN_SELECT(x) ((x) << 22) /* 2 bits */ -#define CONTINUE_TIME_SEL(x) ((x) << 16) /* 4 bits */ -#define KEY_MODE_SEL(x) ((x) << 12) /* 2 bits */ -#define LEVELA_B_CNT(x) ((x) << 8) /* 4 bits */ -#define HOLD_KEY_EN(x) ((x) << 7) -#define HOLD_EN(x) ((x) << 6) -#define LEVELB_VOL(x) ((x) << 4) /* 2 bits */ -#define SAMPLE_RATE(x) ((x) << 2) /* 2 bits */ -#define ENABLE(x) ((x) << 0) - -/* LRADC_INTC and LRADC_INTS bits */ -#define CHAN1_KEYUP_IRQ BIT(12) -#define CHAN1_ALRDY_HOLD_IRQ BIT(11) -#define CHAN1_HOLD_IRQ BIT(10) -#define CHAN1_KEYDOWN_IRQ BIT(9) -#define CHAN1_DATA_IRQ BIT(8) -#define CHAN0_KEYUP_IRQ BIT(4) -#define CHAN0_ALRDY_HOLD_IRQ BIT(3) -#define CHAN0_HOLD_IRQ BIT(2) -#define CHAN0_KEYDOWN_IRQ BIT(1) -#define CHAN0_DATA_IRQ BIT(0) - -// this is for PinePhone only - -int lradc_get_pressed_key(void) -{ - uint32_t val; - uint32_t vref = 3000000 * 2 / 3; - - val = readl(LRADC_DATA0) & 0x3f; - val = val * vref / 63; - -// printf("lradc=%u\n", val); - - if (val < 200000) // 158730 - return KEY_VOLUMEUP; - else if (val < 400000) // 349206 - return KEY_VOLUMEDOWN; - - return 0; -} - -void lradc_enable(void) -{ - // aldo3 is always on and defaults to 3V - - writel(0xffffffff, LRADC_INTS); - writel(0, LRADC_INTC); - - /* - * Set sample time to 4 ms / 250 Hz. Wait 2 * 4 ms for key to - * stabilize on press, wait (1 + 1) * 4 ms for key release - */ - writel(FIRST_CONVERT_DLY(0) | LEVELA_B_CNT(0) | HOLD_EN(0) | - SAMPLE_RATE(0) | ENABLE(1), LRADC_CTRL); - -} - -void lradc_disable(void) -{ - writel(0xffffffff, LRADC_INTS); - writel(0, LRADC_INTC); - - /* Disable lradc, leave other settings unchanged */ - writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) | - SAMPLE_RATE(2), LRADC_CTRL); -} diff -ruN /src/meta/u-boot/board/sunxi/lradc.h ./u-boot/board/sunxi/lradc.h --- /src/meta/u-boot/board/sunxi/lradc.h 2020-06-25 08:41:18.146731000 +0000 +++ ./u-boot/board/sunxi/lradc.h 1970-01-01 00:00:00.000000000 +0000 @@ -1,11 +0,0 @@ -#pragma once - -enum { - KEY_NONE = 0, - KEY_VOLUMEDOWN = 1, - KEY_VOLUMEUP = 2, -}; - -int lradc_get_pressed_key(void); -void lradc_enable(void); -void lradc_disable(void); diff -ruN /src/meta/u-boot/include/config/uboot.release ./u-boot/include/config/uboot.release --- /src/meta/u-boot/include/config/uboot.release 2020-06-25 09:03:05.577923000 +0000 +++ ./u-boot/include/config/uboot.release 2020-06-25 23:17:06.876958000 +0000 @@ -1 +1 @@ -2020.07-rc4""-18358-g139397e64e-dirty +2020.07-rc4""-18358-g139397e64e diff -ruN /src/meta/u-boot/include/generated/timestamp_autogenerated.h ./u-boot/include/generated/timestamp_autogenerated.h --- /src/meta/u-boot/include/generated/timestamp_autogenerated.h 2020-06-24 05:31:52.865232000 +0000 +++ ./u-boot/include/generated/timestamp_autogenerated.h 2020-06-25 23:17:06.968958000 +0000 @@ -1,5 +1,5 @@ -#define U_BOOT_DATE "Jun 23 2020" -#define U_BOOT_TIME "03:14:42" +#define U_BOOT_DATE "Jun 25 2020" +#define U_BOOT_TIME "23:14:54" 

#define U_BOOT_TZ "+0000"

-#define U_BOOT_DMI_DATE "06/23/2020" -#define U_BOOT_BUILD_DATE 0x20200623 +#define U_BOOT_DMI_DATE "06/25/2020" +#define U_BOOT_BUILD_DATE 0x20200625 diff -ruN /src/meta/u-boot/include/generated/version_autogenerated.h ./u-boot/include/generated/version_autogenerated.h --- /src/meta/u-boot/include/generated/version_autogenerated.h 2020-06-25 09:03:05.598923000 +0000 +++ ./u-boot/include/generated/version_autogenerated.h 2020-06-25 23:17:06.930958000 +0000 @@ -1,4 +1,4 @@ -#define PLAIN_VERSION "2020.07-rc4-18358-g139397e64e-dirty" +#define PLAIN_VERSION "2020.07-rc4-18358-g139397e64e" 

#define U_BOOT_VERSION "U-Boot " PLAIN_VERSION
#define CC_VERSION_STRING "aarch64-linux-gnu-gcc (Debian 8.3.0-2) 8.3.0"
#define LD_VERSION_STRING "GNU ld (GNU Binutils for Debian) 2.31.1"

diff -ruN /src/meta/u-boot/pinephonevolume.patch ./u-boot/pinephonevolume.patch --- /src/meta/u-boot/pinephonevolume.patch 2020-06-25 08:38:59.272827000 +0000 +++ ./u-boot/pinephonevolume.patch 1970-01-01 00:00:00.000000000 +0000 @@ -1,179 +0,0 @@ -bplist00?_WebMainResource? -

_ebResourceTextEncodingName^WebResourceURL_WebResourceFrameName_WebResourceData_WebResourceMIMETypeUUTF-8_Phttps://megous.com/git/u-boot/patch/?id=0ab6225154c3d8b74f06fb3b181b52a9a64b4602PO?<html><head></head><body>

From 0ab6225154c3d8b74f06fb3b181b52a9a64b4602 Mon Sep 17 00:00:00 2001
-From: Ondrej Jirman
-Date: Tue, 11 Feb 2020 14:10:05 +0100
-Subject: pinephone: Add volume_key environment variable
-
-When the user has a volume key pressed volume_key variable will
-contain either value 'down' or 'up', otherwise it will be empty.
-
-Signed-off-by: Ondrej Jirman <megous@megous.com>
----
- board/sunxi/Makefile |  1 +
- board/sunxi/board.c  | 18 ++++++++++++
- board/sunxi/lradc.c  | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++
- board/sunxi/lradc.h  | 11 +++++++
- 4 files changed, 111 insertions(+)
- create mode 100644 board/sunxi/lradc.c
- create mode 100644 board/sunxi/lradc.h
-
-diff --git a/board/sunxi/Makefile b/board/sunxi/Makefile
-index c4e13f8c38..6a8a2f5b42 100644
---- a/board/sunxi/Makefile
-+++ b/board/sunxi/Makefile
-@@ -11,3 +11,4 @@ obj-$(CONFIG_SUN7I_GMAC)	+= gmac.o
- obj-$(CONFIG_MACH_SUN4I)	+= dram_sun4i_auto.o
- obj-$(CONFIG_MACH_SUN5I)	+= dram_sun5i_auto.o
- obj-$(CONFIG_MACH_SUN7I)	+= dram_sun5i_auto.o
-+obj-$(CONFIG_MACH_SUN50I)	+= lradc.o
-diff --git a/board/sunxi/board.c b/board/sunxi/board.c
-index 6de4b53b11..2bedf7a16a 100644
---- a/board/sunxi/board.c
-+++ b/board/sunxi/board.c
-@@ -39,6 +39,7 @@
- #include <spl.h>
- #include <sy8106a.h>
- #include <asm/setup.h>
-+#include "lradc.h"
- 
- #if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD)
- /* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */
-@@ -622,6 +623,12 @@ void sunxi_board_init(void)
- {
- 	int power_failed = 0;
- 
-+#ifdef CONFIG_MACH_SUN50I
-+	// we init the lradc in SPL to get the ADC started early to have
-+	// a valid sample when U-Boot main binary gets executed.
-+	lradc_enable();
-+#endif
-+
- #ifdef CONFIG_PINEPHONE_LEDS
- 	/* PD18:G PD19:R PD20:B */
- 	gpio_request(SUNXI_GPD(18), "led:green");
-@@ -905,6 +912,17 @@ int misc_init_r(void)
- 		env_set("mmc_bootdev", "1");
- 	}
- 
-+#ifdef CONFIG_MACH_SUN50I
-+	int key = lradc_get_pressed_key();
-+	if (key == KEY_VOLUMEDOWN)
-+		env_set("volume_key", "down");
-+	else if (key == KEY_VOLUMEUP)
-+		env_set("volume_key", "up");
-+	
-+	// no longer needed
-+	lradc_disable();
-+#endif
-+
- 	setup_environment(gd->fdt_blob);
- 
- #ifdef CONFIG_USB_ETHER
-diff --git a/board/sunxi/lradc.c b/board/sunxi/lradc.c
-new file mode 100644
-index 0000000000..693b198e25
---- /dev/null
-+++ b/board/sunxi/lradc.c
-@@ -0,0 +1,81 @@
-+#include <common.h>
-+#include <asm/io.h>
-+#include "lradc.h"
-+
-+#define LRADC_BASE		0x1c21800
-+
-+#define LRADC_CTRL		(LRADC_BASE + 0x00)
-+#define LRADC_INTC		(LRADC_BASE + 0x04)
-+#define LRADC_INTS		(LRADC_BASE + 0x08)
-+#define LRADC_DATA0		(LRADC_BASE + 0x0c)
-+#define LRADC_DATA1		(LRADC_BASE + 0x10)
-+
-+/* LRADC_CTRL bits */
-+#define FIRST_CONVERT_DLY(x)	((x) << 24) /* 8 bits */
-+#define CHAN_SELECT(x)		((x) << 22) /* 2 bits */
-+#define CONTINUE_TIME_SEL(x)	((x) << 16) /* 4 bits */
-+#define KEY_MODE_SEL(x)		((x) << 12) /* 2 bits */
-+#define LEVELA_B_CNT(x)		((x) << 8)  /* 4 bits */
-+#define HOLD_KEY_EN(x)		((x) << 7)
-+#define HOLD_EN(x)		((x) << 6)
-+#define LEVELB_VOL(x)		((x) << 4)  /* 2 bits */
-+#define SAMPLE_RATE(x)		((x) << 2)  /* 2 bits */
-+#define ENABLE(x)		((x) << 0)
-+
-+/* LRADC_INTC and LRADC_INTS bits */
-+#define CHAN1_KEYUP_IRQ		BIT(12)
-+#define CHAN1_ALRDY_HOLD_IRQ	BIT(11)
-+#define CHAN1_HOLD_IRQ		BIT(10)
-+#define	CHAN1_KEYDOWN_IRQ	BIT(9)
-+#define CHAN1_DATA_IRQ		BIT(8)
-+#define CHAN0_KEYUP_IRQ		BIT(4)
-+#define CHAN0_ALRDY_HOLD_IRQ	BIT(3)
-+#define CHAN0_HOLD_IRQ		BIT(2)
-+#define	CHAN0_KEYDOWN_IRQ	BIT(1)
-+#define CHAN0_DATA_IRQ		BIT(0)
-+
-+// this is for PinePhone only
-+
-+int lradc_get_pressed_key(void)
-+{
-+	uint32_t val;
-+	uint32_t vref = 3000000 * 2 / 3;
-+
-+	val = readl(LRADC_DATA0) & 0x3f;
-+	val = val * vref / 63;
-+
-+//	printf("lradc=%u\n", val);
-+
-+	if (val < 200000) // 158730
-+		return KEY_VOLUMEUP;
-+	else if (val < 400000) // 349206
-+		return KEY_VOLUMEDOWN;
-+
-+	return 0;
-+}
-+
-+void lradc_enable(void)
-+{
-+	// aldo3 is always on and defaults to 3V
-+
-+	writel(0xffffffff, LRADC_INTS);
-+	writel(0, LRADC_INTC);
-+
-+	/*
-+	 * Set sample time to 4 ms / 250 Hz. Wait 2 * 4 ms for key to
-+	 * stabilize on press, wait (1 + 1) * 4 ms for key release
-+	 */
-+	writel(FIRST_CONVERT_DLY(0) | LEVELA_B_CNT(0) | HOLD_EN(0) |
-+		SAMPLE_RATE(0) | ENABLE(1), LRADC_CTRL);
-+
-+}
-+
-+void lradc_disable(void)
-+{
-+	writel(0xffffffff, LRADC_INTS);
-+	writel(0, LRADC_INTC);
-+
-+	/* Disable lradc, leave other settings unchanged */
-+	writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) |
-+		SAMPLE_RATE(2), LRADC_CTRL);
-+}
-diff --git a/board/sunxi/lradc.h b/board/sunxi/lradc.h
-new file mode 100644
-index 0000000000..c908401b5b
---- /dev/null
-+++ b/board/sunxi/lradc.h
-@@ -0,0 +1,11 @@
-+#pragma once
-+
-+enum {
-+	KEY_NONE = 0,
-+	KEY_VOLUMEDOWN = 1,
-+	KEY_VOLUMEUP = 2,
-+};
-+
-+int lradc_get_pressed_key(void);
-+void lradc_enable(void);
-+void lradc_disable(void);
--- 
-cgit v1.2.3
-
-

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