add driver
Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx>
---
drivers/media/i2c/smia/Kconfig | 8 +
drivers/media/i2c/smia/Makefile | 1 +
drivers/media/i2c/smia/et8ek8.c | 1788 +++++++++++++++++++++++++++++++++++++++
3 files changed, 1797 insertions(+)
create mode 100644 drivers/media/i2c/smia/et8ek8.c
diff --git a/drivers/media/i2c/smia/Kconfig b/drivers/media/i2c/smia/Kconfig
index d9be497..13ca043 100644
--- a/drivers/media/i2c/smia/Kconfig
+++ b/drivers/media/i2c/smia/Kconfig
@@ -7,3 +7,11 @@ config VIDEO_SMIAREGS
Also a few helper functions are provided to work with binary
register lists.
+
+config VIDEO_ET8EK8
+ tristate "ET8EK8 camera sensor support"
+ depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ select VIDEO_SMIAREGS
+ ---help---
+ This is a driver for the Toshiba ET8EK8 5 MP camera sensor.
+ It is used for example in Nokia N900 (RX-51).
diff --git a/drivers/media/i2c/smia/Makefile b/drivers/media/i2c/smia/Makefile
index cff67bc..56cf15e 100644
--- a/drivers/media/i2c/smia/Makefile
+++ b/drivers/media/i2c/smia/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_VIDEO_SMIAREGS) += smiaregs.o
+obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8.o
diff --git a/drivers/media/i2c/smia/et8ek8.c b/drivers/media/i2c/smia/et8ek8.c
new file mode 100644
index 0000000..46c112d
--- /dev/null
+++ b/drivers/media/i2c/smia/et8ek8.c
@@ -0,0 +1,1788 @@
+/*
+ * drivers/media/video/et8ek8.c
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * Contact: Sakari Ailus <sakari.ailus@xxxxxxxxx>
+ * Tuukka Toivonen <tuukka.o.toivonen@xxxxxxxxx>
+ *
+ * Based on code from Toni Leinonen <toni.leinonen@xxxxxxxxxx>.
+ *
+ * This driver is based on the Micron MT9T012 camera imager driver
+ * (C) Texas Instruments.
+ *
+ * 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#define DEBUG
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <linux/v4l2-mediabus.h>
+
+#include <media/media-entity.h>
+#include <media/smiaregs.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#define ET8EK8_NAME "et8ek8"
+#define ET8EK8_XCLK_HZ 9600000
+#define ET8EK8_PRIV_MEM_SIZE 128
+
+#define CTRL_GAIN 0
+#define CTRL_EXPOSURE 1
+#define CTRL_TEST_PATTERN 2
+
+#define CID_TO_CTRL(id) ((id)==V4L2_CID_GAIN ? CTRL_GAIN : \
+ (id)==V4L2_CID_EXPOSURE ? CTRL_EXPOSURE : \
+ (id)==V4L2_CID_TEST_PATTERN ? CTRL_TEST_PATTERN : \
+ -EINVAL)
+
+struct et8ek8_sensor {
+ struct v4l2_subdev subdev;
+ struct media_pad pad;
+ struct v4l2_mbus_framefmt format;
+ struct gpio_desc *reset;
+ struct regulator *vana;
+ struct clk *ext_clk;
+
+ u16 version;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *pixel_rate;
+ struct smia_reglist *current_reglist;
+
+ u8 priv_mem[ET8EK8_PRIV_MEM_SIZE];
+
+ struct mutex power_lock;
+ int power_count;
+};
+
+#define to_et8ek8_sensor(sd) container_of(sd, struct et8ek8_sensor, subdev)
+
+enum et8ek8_versions {
+ ET8EK8_REV_1 = 0x0001,
+ ET8EK8_REV_2,
+};
+
+/*
+ * This table describes what should be written to the sensor register
+ * for each gain value. The gain(index in the table) is in terms of
+ * 0.1EV, i.e. 10 indexes in the table give 2 time more gain [0] in
+ * the *analog gain, [1] in the digital gain
+ *
+ * Analog gain [dB] = 20*log10(regvalue/32); 0x20..0x100
+ */
+static struct et8ek8_gain {
+ u16 analog;
+ u16 digital;
+} const et8ek8_gain_table[] = {
+ { 32, 0}, /* x1 */
+ { 34, 0},
+ { 37, 0},
+ { 39, 0},
+ { 42, 0},
+ { 45, 0},
+ { 49, 0},
+ { 52, 0},
+ { 56, 0},
+ { 60, 0},
+ { 64, 0}, /* x2 */
+ { 69, 0},
+ { 74, 0},
+ { 79, 0},
+ { 84, 0},
+ { 91, 0},
+ { 97, 0},
+ {104, 0},
+ {111, 0},
+ {119, 0},
+ {128, 0}, /* x4 */
+ {137, 0},
+ {147, 0},
+ {158, 0},
+ {169, 0},
+ {181, 0},
+ {194, 0},
+ {208, 0},
+ {223, 0},
+ {239, 0},
+ {256, 0}, /* x8 */
+ {256, 73},
+ {256, 152},
+ {256, 236},
+ {256, 327},
+ {256, 424},
+ {256, 528},
+ {256, 639},
+ {256, 758},
+ {256, 886},
+ {256, 1023}, /* x16 */
+};
+
+/* Register definitions */
+#define REG_REVISION_NUMBER_L 0x1200
+#define REG_REVISION_NUMBER_H 0x1201
+
+#define PRIV_MEM_START_REG 0x0008
+#define PRIV_MEM_WIN_SIZE 8
+
+#define ET8EK8_I2C_DELAY 3 /* msec delay b/w accesses */
+
+#define USE_CRC 1
+
+/*
+ *
+ * Stingray sensor mode settings for Scooby
+ *
+ *
+ */
+
+/* Mode1_poweron_Mode2_16VGA_2592x1968_12.07fps */
+static struct smia_reglist mode1_poweron_mode2_16vga_2592x1968_12_07fps = { /* 1 */
+/* (without the +1)
+ * SPCK = 80 MHz
+ * CCP2 = 640 MHz
+ * VCO = 640 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 137 (3288)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 200
+ * VCO_DIV = 0
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_POWERON,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3288,
+ .height = 2016,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 2592,
+ .window_height = 1968,
+ .pixel_clock = 80000000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 1207
+ },
+ .max_exp = 2012,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x126C, 0xCC }, /* Need to set firstly */
+ { SMIA_REG_8BIT, 0x1269, 0x00 }, /* Strobe and Data of CCP2 delay are minimized. */
+ { SMIA_REG_8BIT, 0x1220, 0x89 }, /* Refined value of Min H_COUNT */
+ { SMIA_REG_8BIT, 0x123A, 0x07 }, /* Frequency of SPCK setting (SPCK=MRCK) */
+ { SMIA_REG_8BIT, 0x1241, 0x94 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1242, 0x02 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x124B, 0x00 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1255, 0xFF }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1256, 0x9F }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1258, 0x00 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* From parallel out to serial out */
+ { SMIA_REG_8BIT, 0x125E, 0xC0 }, /* From w/ embeded data to w/o embeded data */
+ { SMIA_REG_8BIT, 0x1263, 0x98 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1268, 0xC6 }, /* CCP2 out is from STOP to ACTIVE */
+ { SMIA_REG_8BIT, 0x1434, 0x00 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1163, 0x44 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1166, 0x29 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1140, 0x02 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1011, 0x24 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1151, 0x80 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1152, 0x23 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1014, 0x05 }, /* Initial setting( for improvement2 of lower frequency noise ) */
+ { SMIA_REG_8BIT, 0x1033, 0x06 },
+ { SMIA_REG_8BIT, 0x1034, 0x79 },
+ { SMIA_REG_8BIT, 0x1423, 0x3F },
+ { SMIA_REG_8BIT, 0x1424, 0x3F },
+ { SMIA_REG_8BIT, 0x1426, 0x00 },
+ { SMIA_REG_8BIT, 0x1439, 0x00 }, /* Switch of Preset-White-balance (0d:disable / 1d:enable) */
+ { SMIA_REG_8BIT, 0x161F, 0x60 }, /* Switch of blemish correction (0d:disable / 1d:enable) */
+ { SMIA_REG_8BIT, 0x1634, 0x00 }, /* Switch of auto noise correction (0d:disable / 1d:enable) */
+ { SMIA_REG_8BIT, 0x1646, 0x00 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1648, 0x00 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x113E, 0x01 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x113F, 0x22 }, /* Initial setting */
+ { SMIA_REG_8BIT, 0x1239, 0x64 },
+ { SMIA_REG_8BIT, 0x1238, 0x02 },
+ { SMIA_REG_8BIT, 0x123B, 0x70 },
+ { SMIA_REG_8BIT, 0x123A, 0x07 },
+ { SMIA_REG_8BIT, 0x121B, 0x64 },
+ { SMIA_REG_8BIT, 0x121D, 0x64 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0x89 },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0x54 },
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode1_16VGA_2592x1968_13.12fps_DPCM10-8 */
+static struct smia_reglist mode1_16vga_2592x1968_13_12fps_dpcm10_8 = { /* 2 */
+/* (without the +1)
+ * SPCK = 80 MHz
+ * CCP2 = 560 MHz
+ * VCO = 560 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 128 (3072)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 175
+ * VCO_DIV = 0
+ * SPCK_DIV = 6
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3072,
+ .height = 2016,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 2592,
+ .window_height = 1968,
+ .pixel_clock = 80000000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 1292
+ },
+ .max_exp = 2012,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10DPCM8,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x57 },
+ { SMIA_REG_8BIT, 0x1238, 0x82 },
+ { SMIA_REG_8BIT, 0x123B, 0x70 },
+ { SMIA_REG_8BIT, 0x123A, 0x06 },
+ { SMIA_REG_8BIT, 0x121B, 0x64 },
+ { SMIA_REG_8BIT, 0x121D, 0x64 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0x80 }, /* <-changed to v14 7E->80 */
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0x54 },
+ { SMIA_REG_8BIT, 0x125D, 0x83 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode3_4VGA_1296x984_29.99fps_DPCM10-8 */
+static struct smia_reglist mode3_4vga_1296x984_29_99fps_dpcm10_8 = { /* 3 */
+/* (without the +1)
+ * SPCK = 96.5333333333333 MHz
+ * CCP2 = 579.2 MHz
+ * VCO = 579.2 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 133 (3192)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 181
+ * VCO_DIV = 0
+ * SPCK_DIV = 5
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3192,
+ .height = 1008,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 1296,
+ .window_height = 984,
+ .pixel_clock = 96533333,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 3000
+ },
+ .max_exp = 1004,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10DPCM8,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x5A }, /* */
+ { SMIA_REG_8BIT, 0x1238, 0x82 }, /* */
+ { SMIA_REG_8BIT, 0x123B, 0x70 }, /* */
+ { SMIA_REG_8BIT, 0x123A, 0x05 }, /* */
+ { SMIA_REG_8BIT, 0x121B, 0x63 }, /* */
+ { SMIA_REG_8BIT, 0x1220, 0x85 }, /* */
+ { SMIA_REG_8BIT, 0x1221, 0x00 }, /* */
+ { SMIA_REG_8BIT, 0x1222, 0x54 }, /* */
+ { SMIA_REG_8BIT, 0x1223, 0x00 }, /* */
+ { SMIA_REG_8BIT, 0x121D, 0x63 },
+ { SMIA_REG_8BIT, 0x125D, 0x83 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode4_SVGA_864x656_29.88fps */
+static struct smia_reglist mode4_svga_864x656_29_88fps = { /* 4 */
+/* (without the +1)
+ * SPCK = 80 MHz
+ * CCP2 = 320 MHz
+ * VCO = 640 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 166 (3984)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 200
+ * VCO_DIV = 0
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 1
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3984,
+ .height = 672,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 864,
+ .window_height = 656,
+ .pixel_clock = 80000000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 2988
+ },
+ .max_exp = 668,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x64 },
+ { SMIA_REG_8BIT, 0x1238, 0x02 },
+ { SMIA_REG_8BIT, 0x123B, 0x71 },
+ { SMIA_REG_8BIT, 0x123A, 0x07 },
+ { SMIA_REG_8BIT, 0x121B, 0x62 },
+ { SMIA_REG_8BIT, 0x121D, 0x62 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0xA6 },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0x54 },
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode5_VGA_648x492_29.93fps */
+static struct smia_reglist mode5_vga_648x492_29_93fps = { /* 5 */
+/* (without the +1)
+ * SPCK = 80 MHz
+ * CCP2 = 320 MHz
+ * VCO = 640 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 221 (5304)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 200
+ * VCO_DIV = 0
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 1
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 5304,
+ .height = 504,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 648,
+ .window_height = 492,
+ .pixel_clock = 80000000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 2993
+ },
+ .max_exp = 500,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x64 },
+ { SMIA_REG_8BIT, 0x1238, 0x02 },
+ { SMIA_REG_8BIT, 0x123B, 0x71 },
+ { SMIA_REG_8BIT, 0x123A, 0x07 },
+ { SMIA_REG_8BIT, 0x121B, 0x61 },
+ { SMIA_REG_8BIT, 0x121D, 0x61 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0xDD },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0x54 },
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode2_16VGA_2592x1968_3.99fps */
+static struct smia_reglist mode2_16vga_2592x1968_3_99fps = { /* 6 */
+/* (without the +1)
+ * SPCK = 80 MHz
+ * CCP2 = 640 MHz
+ * VCO = 640 MHz
+ * VCOUNT = 254 (6096)
+ * HCOUNT = 137 (3288)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 200
+ * VCO_DIV = 0
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3288,
+ .height = 6096,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 2592,
+ .window_height = 1968,
+ .pixel_clock = 80000000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 399
+ },
+ .max_exp = 6092,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x64 },
+ { SMIA_REG_8BIT, 0x1238, 0x02 },
+ { SMIA_REG_8BIT, 0x123B, 0x70 },
+ { SMIA_REG_8BIT, 0x123A, 0x07 },
+ { SMIA_REG_8BIT, 0x121B, 0x64 },
+ { SMIA_REG_8BIT, 0x121D, 0x64 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0x89 },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0xFE },
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode_648x492_5fps */
+static struct smia_reglist mode_648x492_5fps = { /* 7 */
+/* (without the +1)
+ * SPCK = 13.3333333333333 MHz
+ * CCP2 = 53.3333333333333 MHz
+ * VCO = 640 MHz
+ * VCOUNT = 84 (2016)
+ * HCOUNT = 221 (5304)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 200
+ * VCO_DIV = 5
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 1
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 5304,
+ .height = 504,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 648,
+ .window_height = 492,
+ .pixel_clock = 13333333,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 499
+ },
+ .max_exp = 500,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x64 },
+ { SMIA_REG_8BIT, 0x1238, 0x02 },
+ { SMIA_REG_8BIT, 0x123B, 0x71 },
+ { SMIA_REG_8BIT, 0x123A, 0x57 },
+ { SMIA_REG_8BIT, 0x121B, 0x61 },
+ { SMIA_REG_8BIT, 0x121D, 0x61 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0xDD },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0x54 },
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode3_4VGA_1296x984_5fps */
+static struct smia_reglist mode3_4vga_1296x984_5fps = { /* 8 */
+/* (without the +1)
+ * SPCK = 49.4 MHz
+ * CCP2 = 395.2 MHz
+ * VCO = 790.4 MHz
+ * VCOUNT = 250 (6000)
+ * HCOUNT = 137 (3288)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 247
+ * VCO_DIV = 1
+ * SPCK_DIV = 7
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3288,
+ .height = 3000,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 1296,
+ .window_height = 984,
+ .pixel_clock = 49400000,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 501
+ },
+ .max_exp = 2996,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x7B },
+ { SMIA_REG_8BIT, 0x1238, 0x82 },
+ { SMIA_REG_8BIT, 0x123B, 0x70 },
+ { SMIA_REG_8BIT, 0x123A, 0x17 },
+ { SMIA_REG_8BIT, 0x121B, 0x63 },
+ { SMIA_REG_8BIT, 0x121D, 0x63 },
+ { SMIA_REG_8BIT, 0x1221, 0x00 },
+ { SMIA_REG_8BIT, 0x1220, 0x89 },
+ { SMIA_REG_8BIT, 0x1223, 0x00 },
+ { SMIA_REG_8BIT, 0x1222, 0xFA },
+ { SMIA_REG_8BIT, 0x125D, 0x88 }, /* CCP_LVDS_MODE/ */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+/* Mode_4VGA_1296x984_25fps_DPCM10-8 */
+static struct smia_reglist mode_4vga_1296x984_25fps_dpcm10_8 = { /* 9 */
+/* (without the +1)
+ * SPCK = 84.2666666666667 MHz
+ * CCP2 = 505.6 MHz
+ * VCO = 505.6 MHz
+ * VCOUNT = 88 (2112)
+ * HCOUNT = 133 (3192)
+ * CKREF_DIV = 2
+ * CKVAR_DIV = 158
+ * VCO_DIV = 0
+ * SPCK_DIV = 5
+ * MRCK_DIV = 7
+ * LVDSCK_DIV = 0
+ */
+ .type = SMIA_REGLIST_MODE,
+ .mode = {
+ .sensor_width = 2592,
+ .sensor_height = 1968,
+ .sensor_window_origin_x = 0,
+ .sensor_window_origin_y = 0,
+ .sensor_window_width = 2592,
+ .sensor_window_height = 1968,
+ .width = 3192,
+ .height = 1056,
+ .window_origin_x = 0,
+ .window_origin_y = 0,
+ .window_width = 1296,
+ .window_height = 984,
+ .pixel_clock = 84266667,
+ .ext_clock = 9600000,
+ .timeperframe = {
+ .numerator = 100,
+ .denominator = 2500
+ },
+ .max_exp = 1052,
+ /* .max_gain = 0, */
+ .pixel_format = V4L2_PIX_FMT_SGRBG10DPCM8,
+ .sensitivity = 65536
+ },
+ .regs = {
+ { SMIA_REG_8BIT, 0x1239, 0x4F }, /* */
+ { SMIA_REG_8BIT, 0x1238, 0x02 }, /* */
+ { SMIA_REG_8BIT, 0x123B, 0x70 }, /* */
+ { SMIA_REG_8BIT, 0x123A, 0x05 }, /* */
+ { SMIA_REG_8BIT, 0x121B, 0x63 }, /* */
+ { SMIA_REG_8BIT, 0x1220, 0x85 }, /* */
+ { SMIA_REG_8BIT, 0x1221, 0x00 }, /* */
+ { SMIA_REG_8BIT, 0x1222, 0x58 }, /* */
+ { SMIA_REG_8BIT, 0x1223, 0x00 }, /* */
+ { SMIA_REG_8BIT, 0x121D, 0x63 }, /* */
+ { SMIA_REG_8BIT, 0x125D, 0x83 }, /* */
+ { SMIA_REG_TERM, 0, 0}
+ }
+};
+
+static struct smia_meta_reglist et8ek8_smia_meta_reglist = {
+ .magic = SMIA_MAGIC,
+ .version = "V14 03-June-2008",
+ .reglist = {
+ { .ptr = &mode1_poweron_mode2_16vga_2592x1968_12_07fps },
+ { .ptr = &mode1_16vga_2592x1968_13_12fps_dpcm10_8 },
+ { .ptr = &mode3_4vga_1296x984_29_99fps_dpcm10_8 },
+ { .ptr = &mode4_svga_864x656_29_88fps },
+ { .ptr = &mode5_vga_648x492_29_93fps },
+ { .ptr = &mode2_16vga_2592x1968_3_99fps },
+ { .ptr = &mode_648x492_5fps },
+ { .ptr = &mode3_4vga_1296x984_5fps },
+ { .ptr = &mode_4vga_1296x984_25fps_dpcm10_8 },
+ { .ptr = 0 }
+ }
+};
+
+/*
+ * Return time of one row in microseconds, .8 fixed point format.
+ * If the sensor is not set to any mode, return zero.
+ */
+static int et8ek8_get_row_time(struct et8ek8_sensor *sensor)
+{
+ unsigned int clock; /* Pixel clock in Hz>>10 fixed point */
+ unsigned int rt; /* Row time in .8 fixed point */
+
+ if (!sensor->current_reglist)
+ return 0;
+
+ clock = sensor->current_reglist->mode.pixel_clock;
+ clock = (clock + (1 << 9)) >> 10;
+ rt = sensor->current_reglist->mode.width * (1000000 >> 2);
+ rt = (rt + (clock >> 1)) / clock;
+
+ return rt;
+}
+
+/*
+ * Convert exposure time `us' to rows. Modify `us' to make it to
+ * correspond to the actual exposure time.
+ */
+static int et8ek8_exposure_us_to_rows(struct et8ek8_sensor *sensor, u32 *us)
+{
+ unsigned int rows; /* Exposure value as written to HW (ie. rows) */
+ unsigned int rt; /* Row time in .8 fixed point */
+
+ /* Assume that the maximum exposure time is at most ~8 s,
+ * and the maximum width (with blanking) ~8000 pixels.
+ * The formula here is in principle as simple as
+ * rows = exptime / 1e6 / width * pixel_clock
+ * but to get accurate results while coping with value ranges,
+ * have to do some fixed point math.
+ */
+
+ rt = et8ek8_get_row_time(sensor);
+ rows = ((*us << 8) + (rt >> 1)) / rt;
+
+ if (rows > sensor->current_reglist->mode.max_exp)
+ rows = sensor->current_reglist->mode.max_exp;
+
+ /* Set the exposure time to the rounded value */
+ *us = (rt * rows + (1 << 7)) >> 8;
+
+ return rows;
+}
+
+/*
+ * Convert exposure time in rows to microseconds
+ */
+static int et8ek8_exposure_rows_to_us(struct et8ek8_sensor *sensor, int rows)
+{
+ return (et8ek8_get_row_time(sensor) * rows + (1 << 7)) >> 8;
+}
+
+/* Called to change the V4L2 gain control value. This function
+ * rounds and clamps the given value and updates the V4L2 control value.
+ * If power is on, also updates the sensor analog and digital gains.
+ * gain is in 0.1 EV (exposure value) units.
+ */
+static int et8ek8_set_gain(struct et8ek8_sensor *sensor, s32 gain)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
+ struct et8ek8_gain new;
+ int r;
+
+ new = et8ek8_gain_table[gain];
+
+ /* FIXME: optimise I2C writes! */
+ r = smia_i2c_write_reg(client, SMIA_REG_8BIT,
+ 0x124a, new.analog >> 8);
+ if (r)
+ return r;
+ r = smia_i2c_write_reg(client, SMIA_REG_8BIT,
+ 0x1249, new.analog & 0xff);
+ if (r)
+ return r;
+
+ r = smia_i2c_write_reg(client, SMIA_REG_8BIT,
+ 0x124d, new.digital >> 8);
+ if (r)
+ return r;
+ r = smia_i2c_write_reg(client, SMIA_REG_8BIT,
+ 0x124c, new.digital & 0xff);
+
+ return r;
+}
+
+static int et8ek8_set_test_pattern(struct et8ek8_sensor *sensor, s32 mode)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
+ int cbh_mode, cbv_mode, tp_mode, din_sw, r1420, rval;
+
+ /* Values for normal mode */
+ cbh_mode = 0;
+ cbv_mode = 0;
+ tp_mode = 0;
+ din_sw = 0x00;
+ r1420 = 0xF0;
+
+ if (mode != 0) {
+ /* Test pattern mode */
+ if (mode < 5) {
+ cbh_mode = 1;
+ cbv_mode = 1;
+ tp_mode = mode + 3;
+ } else {
+ cbh_mode = 0;
+ cbv_mode = 0;
+ tp_mode = mode - 4 + 3;
+ }
+ din_sw = 0x01;
+ r1420 = 0xE0;
+ }
+
+ rval = smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x111B, tp_mode << 4);
+ if (rval)
+ goto out;
+
+ rval = smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x1121, cbh_mode << 7);
+ if (rval)
+ goto out;
+
+ rval = smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x1124, cbv_mode << 7);
+ if (rval)
+ goto out;
+
+ rval = smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x112C, din_sw);
+ if (rval)
+ goto out;
+
+ rval = smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x1420, r1420);
+ if (rval)
+ goto out;
+
+out:
+ return rval;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 controls
+ */
+
+static int et8ek8_get_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct et8ek8_sensor *sensor =
+ container_of(ctrl->handler, struct et8ek8_sensor, ctrl_handler);
+ const struct smia_mode *mode = &sensor->current_reglist->mode;
+
+ switch (ctrl->id) {
+ case V4L2_CID_MODE_FRAME_WIDTH:
+ ctrl->cur.val = mode->width;
+ break;
+ case V4L2_CID_MODE_FRAME_HEIGHT:
+ ctrl->cur.val = mode->height;
+ break;
+ case V4L2_CID_MODE_VISIBLE_WIDTH:
+ ctrl->cur.val = mode->window_width;
+ break;
+ case V4L2_CID_MODE_VISIBLE_HEIGHT:
+ ctrl->cur.val = mode->window_height;
+ break;
+ case V4L2_CID_MODE_PIXELCLOCK:
+ ctrl->cur.val = mode->pixel_clock;
+ break;
+ case V4L2_CID_MODE_SENSITIVITY:
+ ctrl->cur.val = mode->sensitivity;
+ break;
+ case V4L2_CID_MODE_OPSYSCLOCK:
+ ctrl->cur.val = mode->opsys_clock;
+ break;
+ }
+
+ return 0;
+}
+
+static int et8ek8_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct et8ek8_sensor *sensor =
+ container_of(ctrl->handler, struct et8ek8_sensor, ctrl_handler);
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
+ int uninitialized_var(rows);
+
+ if (ctrl->id == V4L2_CID_EXPOSURE)
+ rows = et8ek8_exposure_us_to_rows(sensor, (u32 *)&ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_GAIN:
+ return et8ek8_set_gain(sensor, ctrl->val);
+
+ case V4L2_CID_EXPOSURE:
+ return smia_i2c_write_reg(client, SMIA_REG_16BIT, 0x1243,
+ swab16(rows));
+
+ case V4L2_CID_TEST_PATTERN:
+ return et8ek8_set_test_pattern(sensor, ctrl->val);
+
+ case V4L2_CID_PIXEL_RATE:
+ /* For v4l2_ctrl_s_ctrl_int64() used internally. */
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct v4l2_ctrl_ops et8ek8_ctrl_ops = {
+ .g_volatile_ctrl = et8ek8_get_ctrl,
+ .s_ctrl = et8ek8_set_ctrl,
+};
+
+static const char *et8ek8_test_pattern_menu[] = {
+ "Normal",
+ "Vertical colorbar",
+ "Horizontal colorbar",
+ "Scale",
+ "Ramp",
+ "Small vertical colorbar",
+ "Small horizontal colorbar",
+ "Small scale",
+ "Small ramp",
+};
+
+static const struct v4l2_ctrl_config et8ek8_ctrls[] = {
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_TEST_PATTERN,
+ .type = V4L2_CTRL_TYPE_MENU,
+ .name = "Test pattern mode",
+ .min = 0,
+ .max = ARRAY_SIZE(et8ek8_test_pattern_menu) - 1,
+ .step = 0,
+ .def = 0,
+ .flags = 0,
+ .qmenu = et8ek8_test_pattern_menu,
+ },
+ {
+ .id = V4L2_CID_MODE_CLASS,
+ .type = V4L2_CTRL_TYPE_CTRL_CLASS,
+ .name = "SMIA-type sensor information",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_WRITE_ONLY,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_FRAME_WIDTH,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Frame width",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_FRAME_HEIGHT,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Frame height",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_VISIBLE_WIDTH,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Visible width",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_VISIBLE_HEIGHT,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Visible height",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_PIXELCLOCK,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Pixel clock [Hz]",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_SENSITIVITY,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Sensivity",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+ {
+ .ops = &et8ek8_ctrl_ops,
+ .id = V4L2_CID_MODE_OPSYSCLOCK,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Output pixel clock [Hz]",
+ .min = 0,
+ .max = 0,
+ .step = 1,
+ .def = 0,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY
+ | V4L2_CTRL_FLAG_VOLATILE,
+ },
+};
+
+static int et8ek8_init_controls(struct et8ek8_sensor *sensor)
+{
+ unsigned int i;
+ u32 min, max;
+
+ v4l2_ctrl_handler_init(&sensor->ctrl_handler,
+ ARRAY_SIZE(et8ek8_ctrls) + 2);
+
+ /* V4L2_CID_GAIN */
+ v4l2_ctrl_new_std(&sensor->ctrl_handler, &et8ek8_ctrl_ops,
+ V4L2_CID_GAIN, 0, ARRAY_SIZE(et8ek8_gain_table) - 1,
+ 1, 0);
+
+ /* V4L2_CID_EXPOSURE */
+ min = et8ek8_exposure_rows_to_us(sensor, 1);
+ max = et8ek8_exposure_rows_to_us(sensor,
+ sensor->current_reglist->mode.max_exp);
+ sensor->exposure =
+ v4l2_ctrl_new_std(&sensor->ctrl_handler, &et8ek8_ctrl_ops,
+ V4L2_CID_EXPOSURE, min, max, min, max);
+ sensor->pixel_rate =
+ v4l2_ctrl_new_std(&sensor->ctrl_handler, &et8ek8_ctrl_ops,
+ V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
+
+ /* V4L2_CID_TEST_PATTERN and V4L2_CID_MODE_* */
+ for (i = 0; i < ARRAY_SIZE(et8ek8_ctrls); ++i)
+ v4l2_ctrl_new_custom(&sensor->ctrl_handler, &et8ek8_ctrls[i],
+ NULL);
+
+ if (sensor->ctrl_handler.error)
+ return sensor->ctrl_handler.error;
+
+ sensor->subdev.ctrl_handler = &sensor->ctrl_handler;
+ return 0;
+}
+
+static void et8ek8_update_controls(struct et8ek8_sensor *sensor)
+{
+ struct v4l2_ctrl *ctrl = sensor->exposure;
+ u32 min, max;
+
+ min = et8ek8_exposure_rows_to_us(sensor, 1);
+ max = et8ek8_exposure_rows_to_us(sensor,
+ sensor->current_reglist->mode.max_exp);
+
+ v4l2_ctrl_lock(ctrl);
+ ctrl->minimum = min;
+ ctrl->maximum = max;
+ ctrl->step = min;
+ ctrl->default_value = max;
+ ctrl->val = max;
+ ctrl->cur.val = max;
+ __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate,
+ sensor->current_reglist->mode.ext_clock);
+ v4l2_ctrl_unlock(ctrl);
+}
+
+static int et8ek8_configure(struct et8ek8_sensor *sensor)
+{
+ struct v4l2_subdev *subdev = &sensor->subdev;
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int rval;
+
+ rval = smia_i2c_write_regs(client, sensor->current_reglist->regs);
+ if (rval)
+ goto fail;
+
+ /* Controls set while the power to the sensor is turned off are saved
+ * but not applied to the hardware. Now that we're about to start
+ * streaming apply all the current values to the hardware.
+ */
+ rval = v4l2_ctrl_handler_setup(&sensor->ctrl_handler);
+ if (rval)
+ goto fail;
+
+ return 0;
+
+fail:
+ dev_err(&client->dev, "sensor configuration failed\n");
+ return rval;
+}
+
+static int et8ek8_stream_on(struct et8ek8_sensor *sensor)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
+
+ return smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x1252, 0xb0);
+}
+
+static int et8ek8_stream_off(struct et8ek8_sensor *sensor)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
+
+ return smia_i2c_write_reg(client, SMIA_REG_8BIT, 0x1252, 0x30);
+}
+
+static int et8ek8_s_stream(struct v4l2_subdev *subdev, int streaming)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ int ret;
+
+ if (!streaming)
+ return et8ek8_stream_off(sensor);
+
+ ret = et8ek8_configure(sensor);
+ if (ret < 0)
+ return ret;
+
+ return et8ek8_stream_on(sensor);
+}
+
+/* --------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+
+static int et8ek8_power_off(struct et8ek8_sensor *sensor)
+{
+ int rval;
+
+ gpiod_set_value(sensor->reset, 0);
+ udelay(1);
+
+ clk_disable_unprepare(sensor->ext_clk);
+
+ rval = regulator_disable(sensor->vana);
+ return rval;
+}
+
+static int et8ek8_power_on(struct et8ek8_sensor *sensor)
+{
+ struct v4l2_subdev *subdev = &sensor->subdev;
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ unsigned int hz = ET8EK8_XCLK_HZ;
+ int val, rval;
+
+ rval = regulator_enable(sensor->vana);
+ if (rval) {
+ dev_err(&client->dev, "failed to enable vana regulator\n");
+ return rval;
+ }
+
+ if (sensor->current_reglist)
+ hz = sensor->current_reglist->mode.ext_clock;
+
+ rval = clk_set_rate(sensor->ext_clk, hz);
+ if (rval < 0) {
+ dev_err(&client->dev,
+ "unable to set extclk clock freq to %u\n", hz);
+ goto out;
+ }
+ rval = clk_prepare_enable(sensor->ext_clk);
+ if (rval < 0) {
+ dev_err(&client->dev, "failed to enable extclk\n");
+ goto out;
+ }
+
+ if (rval)
+ goto out;
+
+ udelay(10); /* I wish this is a good value */
+
+ gpiod_set_value(sensor->reset, 1);
+
+ msleep(5000*1000/hz+1); /* Wait 5000 cycles */
+
+ rval = smia_i2c_reglist_find_write(client,
+ &et8ek8_smia_meta_reglist,
+ SMIA_REGLIST_POWERON);
+ if (rval)
+ goto out;
+
+#ifdef USE_CRC
+ rval = smia_i2c_read_reg(client,
+ SMIA_REG_8BIT, 0x1263, &val);
+ if (rval)
+ goto out;
+#if USE_CRC
+ val |= (1<<4);
+#else
+ val &= ~(1<<4);
+#endif
+ rval = smia_i2c_write_reg(client,
+ SMIA_REG_8BIT, 0x1263, val);
+ if (rval)
+ goto out;
+#endif
+
+out:
+ if (rval)
+ et8ek8_power_off(sensor);
+
+ return rval;
+}
+
+/* --------------------------------------------------------------------------
+ * V4L2 subdev video operations
+ */
+
+static int et8ek8_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ return smia_reglist_enum_mbus_code(&et8ek8_smia_meta_reglist, code);
+}
+
+static int et8ek8_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ return smia_reglist_enum_frame_size(&et8ek8_smia_meta_reglist, fse);
+}
+
+static int et8ek8_enum_frame_ival(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ return smia_reglist_enum_frame_ival(&et8ek8_smia_meta_reglist, fie);
+}
+
+static struct v4l2_mbus_framefmt *
+__et8ek8_get_pad_format(struct et8ek8_sensor *sensor,
+ struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(&sensor->subdev, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &sensor->format;
+ default:
+ return NULL;
+ }
+}
+
+static int et8ek8_get_pad_format(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *fmt)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __et8ek8_get_pad_format(sensor, cfg, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+static int et8ek8_set_pad_format(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *fmt)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct v4l2_mbus_framefmt *format;
+ struct smia_reglist *reglist;
+
+ format = __et8ek8_get_pad_format(sensor, cfg, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ reglist = smia_reglist_find_mode_fmt(&et8ek8_smia_meta_reglist,
+ &fmt->format);
+ smia_reglist_to_mbus(reglist, &fmt->format);
+ *format = fmt->format;
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ sensor->current_reglist = reglist;
+ et8ek8_update_controls(sensor);
+ }
+
+ return 0;
+}
+
+static int et8ek8_get_frame_interval(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+
+ memset(fi, 0, sizeof(*fi));
+ fi->interval = sensor->current_reglist->mode.timeperframe;
+
+ return 0;
+}
+
+static int et8ek8_set_frame_interval(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct smia_reglist *reglist;
+
+ reglist = smia_reglist_find_mode_ival(&et8ek8_smia_meta_reglist,
+ sensor->current_reglist,
+ &fi->interval);
+
+ if (!reglist)
+ return -EINVAL;
+
+ if (sensor->current_reglist->mode.ext_clock != reglist->mode.ext_clock)
+ return -EINVAL;
+
+ sensor->current_reglist = reglist;
+ et8ek8_update_controls(sensor);
+
+ return 0;
+}
+
+static int et8ek8_g_priv_mem(struct v4l2_subdev *subdev)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ unsigned int length = ET8EK8_PRIV_MEM_SIZE;
+ unsigned int offset = 0;
+ u8 *ptr = sensor->priv_mem;
+ int rval = 0;
+
+ /* Read the EEPROM window-by-window, each window 8 bytes */
+ do {
+ u8 buffer[PRIV_MEM_WIN_SIZE];
+ struct i2c_msg msg;
+ int bytes, i;
+ int ofs;
+
+ /* Set the current window */
+ rval = smia_i2c_write_reg(client,
+ SMIA_REG_8BIT,
+ 0x0001,
+ 0xe0 | (offset >> 3));
+ if (rval < 0)
+ goto out;
+
+ /* Wait for status bit */
+ for (i = 0; i < 1000; ++i) {
+ u32 status;
+ rval = smia_i2c_read_reg(client,
+ SMIA_REG_8BIT,
+ 0x0003,
+ &status);
+ if (rval < 0)
+ goto out;
+ if ((status & 0x08) == 0)
+ break;
+ msleep(1);
+ };
+
+ if (i == 1000) {
+ rval = -EIO;
+ goto out;
+ }
+
+ /* Read window, 8 bytes at once, and copy to user space */
+ ofs = offset & 0x07; /* Offset within this window */
+ bytes = length + ofs > 8 ? 8-ofs : length;
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.len = 2;
+ msg.buf = buffer;
+ ofs += PRIV_MEM_START_REG;
+ buffer[0] = (u8)(ofs >> 8);
+ buffer[1] = (u8)(ofs & 0xFF);
+ rval = i2c_transfer(client->adapter, &msg, 1);
+ if (rval < 0)
+ goto out;
+ mdelay(ET8EK8_I2C_DELAY);
+ msg.addr = client->addr;
+ msg.len = bytes;
+ msg.flags = I2C_M_RD;
+ msg.buf = buffer;
+ memset(buffer, 0, sizeof(buffer));
+ rval = i2c_transfer(client->adapter, &msg, 1);
+ if (rval < 0)
+ goto out;
+ rval = 0;
+ memcpy(ptr, buffer, bytes);
+
+ length -= bytes;
+ offset += bytes;
+ ptr += bytes;
+ } while (length > 0);
+
+out:
+ return rval;
+}
+
+static int et8ek8_dev_init(struct v4l2_subdev *subdev)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ int rval, rev_l, rev_h;
+
+ rval = et8ek8_power_on(sensor);
+ if (rval) {
+ dev_err(&client->dev, "could not power on\n");
+ return rval;
+ }
+
+ if (smia_i2c_read_reg(client, SMIA_REG_8BIT,
+ REG_REVISION_NUMBER_L, &rev_l) != 0
+ || smia_i2c_read_reg(client, SMIA_REG_8BIT,
+ REG_REVISION_NUMBER_H, &rev_h) != 0) {
+ dev_err(&client->dev,
+ "no et8ek8 sensor detected\n");
+ rval = -ENODEV;
+ goto out_poweroff;
+ }
+ sensor->version = (rev_h << 8) + rev_l;
+ if (sensor->version != ET8EK8_REV_1
+ && sensor->version != ET8EK8_REV_2)
+ dev_info(&client->dev,
+ "unknown version 0x%x detected, "
+ "continuing anyway\n", sensor->version);
+
+ rval = smia_reglist_import(&et8ek8_smia_meta_reglist);
+ if (rval) {
+ dev_err(&client->dev,
+ "invalid register list %s, import failed\n",
+ ET8EK8_NAME);
+ goto out_poweroff;
+ }
+
+ sensor->current_reglist =
+ smia_reglist_find_type(&et8ek8_smia_meta_reglist,
+ SMIA_REGLIST_MODE);
+ if (!sensor->current_reglist) {
+ dev_err(&client->dev,
+ "invalid register list %s, no mode found\n",
+ ET8EK8_NAME);
+ rval = -ENODEV;
+ goto out_poweroff;
+ }
+
+ smia_reglist_to_mbus(sensor->current_reglist, &sensor->format);
+
+ rval = smia_i2c_reglist_find_write(client,
+ &et8ek8_smia_meta_reglist,
+ SMIA_REGLIST_POWERON);
+ if (rval) {
+ dev_err(&client->dev,
+ "invalid register list %s, no POWERON mode found\n",
+ ET8EK8_NAME);
+ goto out_poweroff;
+ }
+ rval = et8ek8_stream_on(sensor); /* Needed to be able to read EEPROM */
+ if (rval)
+ goto out_poweroff;
+ rval = et8ek8_g_priv_mem(subdev);
+ if (rval)
+ dev_warn(&client->dev,
+ "can not read OTP (EEPROM) memory from sensor\n");
+ rval = et8ek8_stream_off(sensor);
+ if (rval)
+ goto out_poweroff;
+
+ rval = et8ek8_power_off(sensor);
+ if (rval)
+ goto out_poweroff;
+
+ return 0;
+
+out_poweroff:
+ et8ek8_power_off(sensor);
+
+ return rval;
+}
+
+/* --------------------------------------------------------------------------
+ * sysfs attributes
+ */
+static ssize_t
+et8ek8_priv_mem_read(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+
+#if PAGE_SIZE < ET8EK8_PRIV_MEM_SIZE
+#error PAGE_SIZE too small!
+#endif
+
+ memcpy(buf, sensor->priv_mem, ET8EK8_PRIV_MEM_SIZE);
+
+ return ET8EK8_PRIV_MEM_SIZE;
+}
+static DEVICE_ATTR(priv_mem, S_IRUGO, et8ek8_priv_mem_read, NULL);
+
+/* --------------------------------------------------------------------------
+ * V4L2 subdev core operations
+ */
+
+static int
+et8ek8_registered(struct v4l2_subdev *subdev)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ struct v4l2_mbus_framefmt *format;
+ int rval;
+
+ dev_dbg(&client->dev, "registered!");
+
+ if (device_create_file(&client->dev, &dev_attr_priv_mem) != 0) {
+ dev_err(&client->dev, "could not register sysfs entry\n");
+ return -EBUSY;
+ }
+
+ rval = et8ek8_dev_init(subdev);
+ if (rval)
+ return rval;
+
+ rval = et8ek8_init_controls(sensor);
+ if (rval) {
+ dev_err(&client->dev, "controls initialization failed\n");
+ return rval;
+ }
+
+ format = __et8ek8_get_pad_format(sensor, NULL, 0,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+ return 0;
+}
+
+static int __et8ek8_set_power(struct et8ek8_sensor *sensor, bool on)
+{
+ return on ? et8ek8_power_on(sensor) : et8ek8_power_off(sensor);
+}
+
+static int et8ek8_set_power(struct v4l2_subdev *subdev, int on)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ int ret = 0;
+
+ mutex_lock(&sensor->power_lock);
+
+ /* If the power count is modified from 0 to != 0 or from != 0 to 0,
+ * update the power state.
+ */
+ if (sensor->power_count == !on) {
+ ret = __et8ek8_set_power(sensor, !!on);
+ if (ret < 0)
+ goto done;
+ }
+
+ /* Update the power count. */
+ sensor->power_count += on ? 1 : -1;
+ WARN_ON(sensor->power_count < 0);
+
+done:
+ mutex_unlock(&sensor->power_lock);
+ return ret;
+}
+
+static int et8ek8_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(sd);
+ struct v4l2_mbus_framefmt *format;
+ struct smia_reglist *reglist;
+
+ reglist = smia_reglist_find_type(&et8ek8_smia_meta_reglist,
+ SMIA_REGLIST_MODE);
+ format = __et8ek8_get_pad_format(sensor, fh->pad, 0, V4L2_SUBDEV_FORMAT_TRY);
+ smia_reglist_to_mbus(reglist, format);
+
+ return et8ek8_set_power(sd, true);
+}
+
+static int et8ek8_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ return et8ek8_set_power(sd, false);
+}
+
+static const struct v4l2_subdev_video_ops et8ek8_video_ops = {
+ .s_stream = et8ek8_s_stream,
+ .g_frame_interval = et8ek8_get_frame_interval,
+ .s_frame_interval = et8ek8_set_frame_interval,
+};
+
+static const struct v4l2_subdev_core_ops et8ek8_core_ops = {
+ .s_power = et8ek8_set_power,
+};
+
+static const struct v4l2_subdev_pad_ops et8ek8_pad_ops = {
+ .enum_mbus_code = et8ek8_enum_mbus_code,
+ .enum_frame_size = et8ek8_enum_frame_size,
+ .enum_frame_interval = et8ek8_enum_frame_ival,
+ .get_fmt = et8ek8_get_pad_format,
+ .set_fmt = et8ek8_set_pad_format,
+};
+
+static const struct v4l2_subdev_ops et8ek8_ops = {
+ .core = &et8ek8_core_ops,
+ .video = &et8ek8_video_ops,
+ .pad = &et8ek8_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops et8ek8_internal_ops = {
+ .registered = et8ek8_registered,
+ .open = et8ek8_open,
+ .close = et8ek8_close,
+};
+
+/* --------------------------------------------------------------------------
+ * I2C driver
+ */
+#ifdef CONFIG_PM
+
+static int et8ek8_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+
+ if (!sensor->power_count)
+ return 0;
+
+ return __et8ek8_set_power(sensor, false);
+}
+
+static int et8ek8_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+
+ if (!sensor->power_count)
+ return 0;
+
+ return __et8ek8_set_power(sensor, true);
+}
+
+static struct dev_pm_ops et8ek8_pm_ops = {
+ .suspend = et8ek8_suspend,
+ .resume = et8ek8_resume,
+};
+
+#else
+
+#define et8ek8_pm_ops NULL
+
+#endif /* CONFIG_PM */
+
+static int et8ek8_probe(struct i2c_client *client,
+ const struct i2c_device_id *devid)
+{
+ struct et8ek8_sensor *sensor;
+ int ret;
+
+ sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
+ if (!sensor)
+ return -ENOMEM;
+
+ sensor->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(sensor->reset)) {
+ dev_dbg(&client->dev, "could not request reset gpio\n");
+ return PTR_ERR(sensor->reset);;
+ }
+
+ sensor->vana = devm_regulator_get(&client->dev, "vana");
+ if (IS_ERR(sensor->vana)) {
+ dev_err(&client->dev, "could not get regulator for vana\n");
+ return PTR_ERR(sensor->vana);
+ }
+
+ sensor->ext_clk = devm_clk_get(&client->dev, "extclk");
+ if (IS_ERR(sensor->ext_clk)) {
+ dev_err(&client->dev, "could not get clock\n");
+ return PTR_ERR(sensor->ext_clk);
+ }
+
+ mutex_init(&sensor->power_lock);
+
+ v4l2_i2c_subdev_init(&sensor->subdev, client, &et8ek8_ops);
+ sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sensor->subdev.internal_ops = &et8ek8_internal_ops;
+
+ sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad);
+ if (ret < 0) {
+ dev_err(&client->dev, "media entity init failed!\n");
+ return ret;
+ }
+
+ ret = v4l2_async_register_subdev(&sensor->subdev);
+ if (ret < 0) {
+ media_entity_cleanup(&sensor->subdev.entity);
+ return ret;
+ }
+
+ dev_dbg(&client->dev, "initialized!\n");
+
+ return 0;
+}
+
+static int __exit et8ek8_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+ struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+
+ if (sensor->power_count) {
+ gpiod_set_value(sensor->reset, 0);
+ clk_disable_unprepare(sensor->ext_clk);
+ sensor->power_count = 0;
+ }
+
+ v4l2_device_unregister_subdev(&sensor->subdev);
+ device_remove_file(&client->dev, &dev_attr_priv_mem);
+ v4l2_ctrl_handler_free(&sensor->ctrl_handler);
+ media_entity_cleanup(&sensor->subdev.entity);
+
+ return 0;
+}
+
+static const struct of_device_id et8ek8_of_table[] = {
+ { .compatible = "toshiba,et8ek8" },
+ { },
+};
+
+static const struct i2c_device_id et8ek8_id_table[] = {
+ { ET8EK8_NAME, 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, et8ek8_id_table);
+
+static struct i2c_driver et8ek8_i2c_driver = {
+ .driver = {
+ .name = ET8EK8_NAME,
+ .pm = &et8ek8_pm_ops,
+ .of_match_table = et8ek8_of_table,
+ },
+ .probe = et8ek8_probe,
+ .remove = __exit_p(et8ek8_remove),
+ .id_table = et8ek8_id_table,
+};
+
+module_i2c_driver(et8ek8_i2c_driver);
+
+MODULE_AUTHOR("Sakari Ailus <sakari.ailus@xxxxxxxxx>");
+MODULE_DESCRIPTION("Toshiba ET8EK8 camera sensor driver");
+MODULE_LICENSE("GPL");
--
1.9.1
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