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author | Alan Cox <alan@linux.intel.com> | 2017-02-17 16:55:17 +0000 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-06 09:39:54 +0100 |
commit | a49d25364dfb9f8a64037488a39ab1f56c5fa419 (patch) | |
tree | bd97382cf06a958cef045e75334fc622500ba209 /drivers/staging/media/atomisp/i2c/ov5693/ad5823.h | |
parent | 372499b589ae5ec38d3dec88b72f2bde3b3790d4 (diff) | |
download | linux-stable-a49d25364dfb9f8a64037488a39ab1f56c5fa419.tar.gz linux-stable-a49d25364dfb9f8a64037488a39ab1f56c5fa419.tar.bz2 linux-stable-a49d25364dfb9f8a64037488a39ab1f56c5fa419.zip |
staging/atomisp: Add support for the Intel IPU v2
This patch adds support for the Intel IPU v2 as found on Android and IoT
Baytrail-T and Baytrail-CR platforms (those with the IPU PCI mapped). You
will also need the firmware files from your device (Android usually puts
them into /etc) - or you can find them in the downloadable restore/upgrade
kits if you blew them away for some reason.
It may be possible to extend the driver to handle the BYT/T windows
platforms such as the ASUS T100TA. These platforms don't expose the IPU via
the PCI interface but via ACPI buried in the GPU description and with the
camera information somewhere unknown so would need a platform driver
interface adding to the codebase *IFF* the firmware works on such devices.
To get good results you also need a suitable support library such as
libxcam. The camera is intended to be driven from Android so it has a lot of
features that many desktop apps don't fully spport.
In theory all the pieces are there to build it with -DISP2401 and some
differing files to get CherryTrail/T support, but unifying the drivers
properlly is a work in progress.
The IPU driver represents the work of a lot of people within Intel over many
years. It's historical goal was portability rather than Linux upstream. Any
queries about the upstream aimed driver should be sent to me not to the
original authors.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/ov5693/ad5823.h')
-rw-r--r-- | drivers/staging/media/atomisp/i2c/ov5693/ad5823.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/i2c/ov5693/ad5823.h b/drivers/staging/media/atomisp/i2c/ov5693/ad5823.h new file mode 100644 index 000000000000..2dd894989cd9 --- /dev/null +++ b/drivers/staging/media/atomisp/i2c/ov5693/ad5823.h @@ -0,0 +1,67 @@ +/* + * Support for AD5823 VCM. + * + * Copyright (c) 2013 Intel Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + */ + +#ifndef __AD5823_H__ +#define __AD5823_H__ + +#include <linux/types.h> + + +#define AD5823_VCM_ADDR 0x0c + +#define AD5823_REG_RESET 0x01 +#define AD5823_REG_MODE 0x02 +#define AD5823_REG_VCM_MOVE_TIME 0x03 +#define AD5823_REG_VCM_CODE_MSB 0x04 +#define AD5823_REG_VCM_CODE_LSB 0x05 +#define AD5823_REG_VCM_THRESHOLD_MSB 0x06 +#define AD5823_REG_VCM_THRESHOLD_LSB 0x07 + +#define AD5823_REG_LENGTH 0x1 + +#define AD5823_RING_CTRL_ENABLE 0x04 +#define AD5823_RING_CTRL_DISABLE 0x00 + +#define AD5823_RESONANCE_PERIOD 100000 +#define AD5823_RESONANCE_COEF 512 +#define AD5823_HIGH_FREQ_RANGE 0x80 + +#define VCM_CODE_MSB_MASK 0xfc +#define AD5823_INIT_FOCUS_POS 350 + +enum ad5823_tok_type { + AD5823_8BIT = 0x1, + AD5823_16BIT = 0x2, +}; + +enum ad5823_vcm_mode { + AD5823_ARC_RES0 = 0x0, /* Actuator response control RES1 */ + AD5823_ARC_RES1 = 0x1, /* Actuator response control RES0.5 */ + AD5823_ARC_RES2 = 0x2, /* Actuator response control RES2 */ + AD5823_ESRC = 0x3, /* Enhanced slew rate control */ + AD5823_DIRECT = 0x4, /* Direct control */ +}; + +#define AD5823_INVALID_CONFIG 0xffffffff +#define AD5823_MAX_FOCUS_POS 1023 +#define DELAY_PER_STEP_NS 1000000 +#define DELAY_MAX_PER_STEP_NS (1000000 * 1023) +#endif |