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path: root/drivers/media/i2c/ov08x40.c
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Diffstat (limited to 'drivers/media/i2c/ov08x40.c')
-rw-r--r--drivers/media/i2c/ov08x40.c1307
1 files changed, 129 insertions, 1178 deletions
diff --git a/drivers/media/i2c/ov08x40.c b/drivers/media/i2c/ov08x40.c
index abbb0b774d..48df077522 100644
--- a/drivers/media/i2c/ov08x40.c
+++ b/drivers/media/i2c/ov08x40.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2022 Intel Corporation.
+#include <asm-generic/unaligned.h>
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/module.h>
@@ -34,7 +35,7 @@
/* V_TIMING internal */
#define OV08X40_REG_VTS 0x380e
-#define OV08X40_VTS_30FPS 0x1388
+#define OV08X40_VTS_30FPS 0x09c4 /* the VTS need to be half in normal mode */
#define OV08X40_VTS_BIN_30FPS 0x115c
#define OV08X40_VTS_MAX 0x7fff
@@ -44,8 +45,9 @@
/* Exposure control */
#define OV08X40_REG_EXPOSURE 0x3500
-#define OV08X40_EXPOSURE_MAX_MARGIN 31
-#define OV08X40_EXPOSURE_MIN 1
+#define OV08X40_EXPOSURE_MAX_MARGIN 8
+#define OV08X40_EXPOSURE_BIN_MAX_MARGIN 2
+#define OV08X40_EXPOSURE_MIN 4
#define OV08X40_EXPOSURE_STEP 1
#define OV08X40_EXPOSURE_DEFAULT 0x40
@@ -94,6 +96,12 @@
/* Vertical Window Offset */
#define OV08X40_REG_V_WIN_OFFSET 0x3813
+/* Burst Register */
+#define OV08X40_REG_XTALK_FIRST_A 0x5a80
+#define OV08X40_REG_XTALK_LAST_A 0x5b9f
+#define OV08X40_REG_XTALK_FIRST_B 0x5bc0
+#define OV08X40_REG_XTALK_LAST_B 0x5f1f
+
enum {
OV08X40_LINK_FREQ_400MHZ_INDEX,
};
@@ -126,13 +134,17 @@ struct ov08x40_mode {
u32 vts_def;
u32 vts_min;
- /* HTS */
- u32 hts;
+ /* Line Length Pixels */
+ u32 llp;
/* Index of Link frequency config to be used */
u32 link_freq_index;
/* Default register values */
struct ov08x40_reg_list reg_list;
+
+ /* Exposure calculation */
+ u16 exposure_margin;
+ u16 exposure_shift;
};
static const struct ov08x40_reg mipi_data_rate_800mbps[] = {
@@ -665,1158 +677,6 @@ static const struct ov08x40_reg mode_3856x2416_regs[] = {
{0x3502, 0x10},
{0x3508, 0x0f},
{0x3509, 0x80},
- {0x5a80, 0x75},
- {0x5a81, 0x75},
- {0x5a82, 0x75},
- {0x5a83, 0x75},
- {0x5a84, 0x75},
- {0x5a85, 0x75},
- {0x5a86, 0x75},
- {0x5a87, 0x75},
- {0x5a88, 0x75},
- {0x5a89, 0x75},
- {0x5a8a, 0x75},
- {0x5a8b, 0x75},
- {0x5a8c, 0x75},
- {0x5a8d, 0x75},
- {0x5a8e, 0x75},
- {0x5a8f, 0x75},
- {0x5a90, 0x75},
- {0x5a91, 0x75},
- {0x5a92, 0x75},
- {0x5a93, 0x75},
- {0x5a94, 0x75},
- {0x5a95, 0x75},
- {0x5a96, 0x75},
- {0x5a97, 0x75},
- {0x5a98, 0x75},
- {0x5a99, 0x75},
- {0x5a9a, 0x75},
- {0x5a9b, 0x75},
- {0x5a9c, 0x75},
- {0x5a9d, 0x75},
- {0x5a9e, 0x75},
- {0x5a9f, 0x75},
- {0x5aa0, 0x75},
- {0x5aa1, 0x75},
- {0x5aa2, 0x75},
- {0x5aa3, 0x75},
- {0x5aa4, 0x75},
- {0x5aa5, 0x75},
- {0x5aa6, 0x75},
- {0x5aa7, 0x75},
- {0x5aa8, 0x75},
- {0x5aa9, 0x75},
- {0x5aaa, 0x75},
- {0x5aab, 0x75},
- {0x5aac, 0x75},
- {0x5aad, 0x75},
- {0x5aae, 0x75},
- {0x5aaf, 0x75},
- {0x5ab0, 0x75},
- {0x5ab1, 0x75},
- {0x5ab2, 0x75},
- {0x5ab3, 0x75},
- {0x5ab4, 0x75},
- {0x5ab5, 0x75},
- {0x5ab6, 0x75},
- {0x5ab7, 0x75},
- {0x5ab8, 0x75},
- {0x5ab9, 0x75},
- {0x5aba, 0x75},
- {0x5abb, 0x75},
- {0x5abc, 0x75},
- {0x5abd, 0x75},
- {0x5abe, 0x75},
- {0x5abf, 0x75},
- {0x5ac0, 0x75},
- {0x5ac1, 0x75},
- {0x5ac2, 0x75},
- {0x5ac3, 0x75},
- {0x5ac4, 0x75},
- {0x5ac5, 0x75},
- {0x5ac6, 0x75},
- {0x5ac7, 0x75},
- {0x5ac8, 0x75},
- {0x5ac9, 0x75},
- {0x5aca, 0x75},
- {0x5acb, 0x75},
- {0x5acc, 0x75},
- {0x5acd, 0x75},
- {0x5ace, 0x75},
- {0x5acf, 0x75},
- {0x5ad0, 0x75},
- {0x5ad1, 0x75},
- {0x5ad2, 0x75},
- {0x5ad3, 0x75},
- {0x5ad4, 0x75},
- {0x5ad5, 0x75},
- {0x5ad6, 0x75},
- {0x5ad7, 0x75},
- {0x5ad8, 0x75},
- {0x5ad9, 0x75},
- {0x5ada, 0x75},
- {0x5adb, 0x75},
- {0x5adc, 0x75},
- {0x5add, 0x75},
- {0x5ade, 0x75},
- {0x5adf, 0x75},
- {0x5ae0, 0x75},
- {0x5ae1, 0x75},
- {0x5ae2, 0x75},
- {0x5ae3, 0x75},
- {0x5ae4, 0x75},
- {0x5ae5, 0x75},
- {0x5ae6, 0x75},
- {0x5ae7, 0x75},
- {0x5ae8, 0x75},
- {0x5ae9, 0x75},
- {0x5aea, 0x75},
- {0x5aeb, 0x75},
- {0x5aec, 0x75},
- {0x5aed, 0x75},
- {0x5aee, 0x75},
- {0x5aef, 0x75},
- {0x5af0, 0x75},
- {0x5af1, 0x75},
- {0x5af2, 0x75},
- {0x5af3, 0x75},
- {0x5af4, 0x75},
- {0x5af5, 0x75},
- {0x5af6, 0x75},
- {0x5af7, 0x75},
- {0x5af8, 0x75},
- {0x5af9, 0x75},
- {0x5afa, 0x75},
- {0x5afb, 0x75},
- {0x5afc, 0x75},
- {0x5afd, 0x75},
- {0x5afe, 0x75},
- {0x5aff, 0x75},
- {0x5b00, 0x75},
- {0x5b01, 0x75},
- {0x5b02, 0x75},
- {0x5b03, 0x75},
- {0x5b04, 0x75},
- {0x5b05, 0x75},
- {0x5b06, 0x75},
- {0x5b07, 0x75},
- {0x5b08, 0x75},
- {0x5b09, 0x75},
- {0x5b0a, 0x75},
- {0x5b0b, 0x75},
- {0x5b0c, 0x75},
- {0x5b0d, 0x75},
- {0x5b0e, 0x75},
- {0x5b0f, 0x75},
- {0x5b10, 0x75},
- {0x5b11, 0x75},
- {0x5b12, 0x75},
- {0x5b13, 0x75},
- {0x5b14, 0x75},
- {0x5b15, 0x75},
- {0x5b16, 0x75},
- {0x5b17, 0x75},
- {0x5b18, 0x75},
- {0x5b19, 0x75},
- {0x5b1a, 0x75},
- {0x5b1b, 0x75},
- {0x5b1c, 0x75},
- {0x5b1d, 0x75},
- {0x5b1e, 0x75},
- {0x5b1f, 0x75},
- {0x5b20, 0x75},
- {0x5b21, 0x75},
- {0x5b22, 0x75},
- {0x5b23, 0x75},
- {0x5b24, 0x75},
- {0x5b25, 0x75},
- {0x5b26, 0x75},
- {0x5b27, 0x75},
- {0x5b28, 0x75},
- {0x5b29, 0x75},
- {0x5b2a, 0x75},
- {0x5b2b, 0x75},
- {0x5b2c, 0x75},
- {0x5b2d, 0x75},
- {0x5b2e, 0x75},
- {0x5b2f, 0x75},
- {0x5b30, 0x75},
- {0x5b31, 0x75},
- {0x5b32, 0x75},
- {0x5b33, 0x75},
- {0x5b34, 0x75},
- {0x5b35, 0x75},
- {0x5b36, 0x75},
- {0x5b37, 0x75},
- {0x5b38, 0x75},
- {0x5b39, 0x75},
- {0x5b3a, 0x75},
- {0x5b3b, 0x75},
- {0x5b3c, 0x75},
- {0x5b3d, 0x75},
- {0x5b3e, 0x75},
- {0x5b3f, 0x75},
- {0x5b40, 0x75},
- {0x5b41, 0x75},
- {0x5b42, 0x75},
- {0x5b43, 0x75},
- {0x5b44, 0x75},
- {0x5b45, 0x75},
- {0x5b46, 0x75},
- {0x5b47, 0x75},
- {0x5b48, 0x75},
- {0x5b49, 0x75},
- {0x5b4a, 0x75},
- {0x5b4b, 0x75},
- {0x5b4c, 0x75},
- {0x5b4d, 0x75},
- {0x5b4e, 0x75},
- {0x5b4f, 0x75},
- {0x5b50, 0x75},
- {0x5b51, 0x75},
- {0x5b52, 0x75},
- {0x5b53, 0x75},
- {0x5b54, 0x75},
- {0x5b55, 0x75},
- {0x5b56, 0x75},
- {0x5b57, 0x75},
- {0x5b58, 0x75},
- {0x5b59, 0x75},
- {0x5b5a, 0x75},
- {0x5b5b, 0x75},
- {0x5b5c, 0x75},
- {0x5b5d, 0x75},
- {0x5b5e, 0x75},
- {0x5b5f, 0x75},
- {0x5b60, 0x75},
- {0x5b61, 0x75},
- {0x5b62, 0x75},
- {0x5b63, 0x75},
- {0x5b64, 0x75},
- {0x5b65, 0x75},
- {0x5b66, 0x75},
- {0x5b67, 0x75},
- {0x5b68, 0x75},
- {0x5b69, 0x75},
- {0x5b6a, 0x75},
- {0x5b6b, 0x75},
- {0x5b6c, 0x75},
- {0x5b6d, 0x75},
- {0x5b6e, 0x75},
- {0x5b6f, 0x75},
- {0x5b70, 0x75},
- {0x5b71, 0x75},
- {0x5b72, 0x75},
- {0x5b73, 0x75},
- {0x5b74, 0x75},
- {0x5b75, 0x75},
- {0x5b76, 0x75},
- {0x5b77, 0x75},
- {0x5b78, 0x75},
- {0x5b79, 0x75},
- {0x5b7a, 0x75},
- {0x5b7b, 0x75},
- {0x5b7c, 0x75},
- {0x5b7d, 0x75},
- {0x5b7e, 0x75},
- {0x5b7f, 0x75},
- {0x5b80, 0x75},
- {0x5b81, 0x75},
- {0x5b82, 0x75},
- {0x5b83, 0x75},
- {0x5b84, 0x75},
- {0x5b85, 0x75},
- {0x5b86, 0x75},
- {0x5b87, 0x75},
- {0x5b88, 0x75},
- {0x5b89, 0x75},
- {0x5b8a, 0x75},
- {0x5b8b, 0x75},
- {0x5b8c, 0x75},
- {0x5b8d, 0x75},
- {0x5b8e, 0x75},
- {0x5b8f, 0x75},
- {0x5b90, 0x75},
- {0x5b91, 0x75},
- {0x5b92, 0x75},
- {0x5b93, 0x75},
- {0x5b94, 0x75},
- {0x5b95, 0x75},
- {0x5b96, 0x75},
- {0x5b97, 0x75},
- {0x5b98, 0x75},
- {0x5b99, 0x75},
- {0x5b9a, 0x75},
- {0x5b9b, 0x75},
- {0x5b9c, 0x75},
- {0x5b9d, 0x75},
- {0x5b9e, 0x75},
- {0x5b9f, 0x75},
- {0x5bc0, 0x75},
- {0x5bc1, 0x75},
- {0x5bc2, 0x75},
- {0x5bc3, 0x75},
- {0x5bc4, 0x75},
- {0x5bc5, 0x75},
- {0x5bc6, 0x75},
- {0x5bc7, 0x75},
- {0x5bc8, 0x75},
- {0x5bc9, 0x75},
- {0x5bca, 0x75},
- {0x5bcb, 0x75},
- {0x5bcc, 0x75},
- {0x5bcd, 0x75},
- {0x5bce, 0x75},
- {0x5bcf, 0x75},
- {0x5bd0, 0x75},
- {0x5bd1, 0x75},
- {0x5bd2, 0x75},
- {0x5bd3, 0x75},
- {0x5bd4, 0x75},
- {0x5bd5, 0x75},
- {0x5bd6, 0x75},
- {0x5bd7, 0x75},
- {0x5bd8, 0x75},
- {0x5bd9, 0x75},
- {0x5bda, 0x75},
- {0x5bdb, 0x75},
- {0x5bdc, 0x75},
- {0x5bdd, 0x75},
- {0x5bde, 0x75},
- {0x5bdf, 0x75},
- {0x5be0, 0x75},
- {0x5be1, 0x75},
- {0x5be2, 0x75},
- {0x5be3, 0x75},
- {0x5be4, 0x75},
- {0x5be5, 0x75},
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- {0x5be7, 0x75},
- {0x5be8, 0x75},
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- {0x5beb, 0x75},
- {0x5bec, 0x75},
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- {0x5bef, 0x75},
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- {0x5bf4, 0x75},
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- {0x5c11, 0x75},
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- {0x5c15, 0x75},
- {0x5c16, 0x75},
- {0x5c17, 0x75},
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- {0x5c19, 0x75},
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- {0x5ed8, 0x75},
- {0x5ed9, 0x75},
- {0x5eda, 0x75},
- {0x5edb, 0x75},
- {0x5edc, 0x75},
- {0x5edd, 0x75},
- {0x5ede, 0x75},
- {0x5edf, 0x75},
- {0x5ee0, 0x75},
- {0x5ee1, 0x75},
- {0x5ee2, 0x75},
- {0x5ee3, 0x75},
- {0x5ee4, 0x75},
- {0x5ee5, 0x75},
- {0x5ee6, 0x75},
- {0x5ee7, 0x75},
- {0x5ee8, 0x75},
- {0x5ee9, 0x75},
- {0x5eea, 0x75},
- {0x5eeb, 0x75},
- {0x5eec, 0x75},
- {0x5eed, 0x75},
- {0x5eee, 0x75},
- {0x5eef, 0x75},
- {0x5ef0, 0x75},
- {0x5ef1, 0x75},
- {0x5ef2, 0x75},
- {0x5ef3, 0x75},
- {0x5ef4, 0x75},
- {0x5ef5, 0x75},
- {0x5ef6, 0x75},
- {0x5ef7, 0x75},
- {0x5ef8, 0x75},
- {0x5ef9, 0x75},
- {0x5efa, 0x75},
- {0x5efb, 0x75},
- {0x5efc, 0x75},
- {0x5efd, 0x75},
- {0x5efe, 0x75},
- {0x5eff, 0x75},
- {0x5f00, 0x75},
- {0x5f01, 0x75},
- {0x5f02, 0x75},
- {0x5f03, 0x75},
- {0x5f04, 0x75},
- {0x5f05, 0x75},
- {0x5f06, 0x75},
- {0x5f07, 0x75},
- {0x5f08, 0x75},
- {0x5f09, 0x75},
- {0x5f0a, 0x75},
- {0x5f0b, 0x75},
- {0x5f0c, 0x75},
- {0x5f0d, 0x75},
- {0x5f0e, 0x75},
- {0x5f0f, 0x75},
- {0x5f10, 0x75},
- {0x5f11, 0x75},
- {0x5f12, 0x75},
- {0x5f13, 0x75},
- {0x5f14, 0x75},
- {0x5f15, 0x75},
- {0x5f16, 0x75},
- {0x5f17, 0x75},
- {0x5f18, 0x75},
- {0x5f19, 0x75},
- {0x5f1a, 0x75},
- {0x5f1b, 0x75},
- {0x5f1c, 0x75},
- {0x5f1d, 0x75},
- {0x5f1e, 0x75},
- {0x5f1f, 0x75},
};
static const struct ov08x40_reg mode_1928x1208_regs[] = {
@@ -2354,7 +1214,7 @@ static const char * const ov08x40_test_pattern_menu[] = {
/* Configurations for supported link frequencies */
#define OV08X40_LINK_FREQ_400MHZ 400000000ULL
-
+#define OV08X40_SCLK_96MHZ 96000000ULL
#define OV08X40_EXT_CLK 19200000
#define OV08X40_DATA_LANES 4
@@ -2392,26 +1252,30 @@ static const struct ov08x40_mode supported_modes[] = {
.height = 2416,
.vts_def = OV08X40_VTS_30FPS,
.vts_min = OV08X40_VTS_30FPS,
- .hts = 640,
+ .llp = 0x10aa, /* in normal mode, tline time = 2 * HTS / SCLK */
.lanes = 4,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_3856x2416_regs),
.regs = mode_3856x2416_regs,
},
.link_freq_index = OV08X40_LINK_FREQ_400MHZ_INDEX,
+ .exposure_shift = 1,
+ .exposure_margin = OV08X40_EXPOSURE_MAX_MARGIN,
},
{
.width = 1928,
.height = 1208,
.vts_def = OV08X40_VTS_BIN_30FPS,
.vts_min = OV08X40_VTS_BIN_30FPS,
- .hts = 720,
+ .llp = 0x960,
.lanes = 4,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1928x1208_regs),
.regs = mode_1928x1208_regs,
},
.link_freq_index = OV08X40_LINK_FREQ_400MHZ_INDEX,
+ .exposure_shift = 0,
+ .exposure_margin = OV08X40_EXPOSURE_BIN_MAX_MARGIN,
},
};
@@ -2432,6 +1296,9 @@ struct ov08x40 {
/* Mutex for serialized access */
struct mutex mutex;
+
+ /* True if the device has been identified */
+ bool identified;
};
#define to_ov08x40(_sd) container_of(_sd, struct ov08x40, sd)
@@ -2472,6 +1339,40 @@ static int ov08x40_read_reg(struct ov08x40 *ov08x,
return 0;
}
+static int ov08x40_burst_fill_regs(struct ov08x40 *ov08x, u16 first_reg,
+ u16 last_reg, u8 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
+ struct i2c_msg msgs;
+ size_t i, num_regs;
+ int ret;
+
+ num_regs = last_reg - first_reg + 1;
+ msgs.addr = client->addr;
+ msgs.flags = 0;
+ msgs.len = 2 + num_regs;
+ msgs.buf = kmalloc(msgs.len, GFP_KERNEL);
+
+ if (!msgs.buf)
+ return -ENOMEM;
+
+ put_unaligned_be16(first_reg, msgs.buf);
+
+ for (i = 0; i < num_regs; ++i)
+ msgs.buf[2 + i] = val;
+
+ ret = i2c_transfer(client->adapter, &msgs, 1);
+
+ kfree(msgs.buf);
+
+ if (ret != 1) {
+ dev_err(&client->dev, "Failed regs transferred: %d\n", ret);
+ return -EIO;
+ }
+
+ return 0;
+}
+
/* Write registers up to 4 at a time */
static int ov08x40_write_reg(struct ov08x40 *ov08x,
u16 reg, u32 len, u32 __val)
@@ -2664,13 +1565,23 @@ static int ov08x40_set_ctrl(struct v4l2_ctrl *ctrl)
struct ov08x40, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
s64 max;
+ int exp;
+ int fll;
int ret = 0;
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
- max = ov08x->cur_mode->height + ctrl->val - OV08X40_EXPOSURE_MAX_MARGIN;
+ /*
+ * because in normal mode, 1 HTS = 0.5 tline
+ * fps = sclk / hts / vts
+ * so the vts value needs to be double
+ */
+ max = ((ov08x->cur_mode->height + ctrl->val) <<
+ ov08x->cur_mode->exposure_shift) -
+ ov08x->cur_mode->exposure_margin;
+
__v4l2_ctrl_modify_range(ov08x->exposure,
ov08x->exposure->minimum,
max, ov08x->exposure->step, max);
@@ -2694,15 +1605,20 @@ static int ov08x40_set_ctrl(struct v4l2_ctrl *ctrl)
ret = ov08x40_update_digital_gain(ov08x, ctrl->val);
break;
case V4L2_CID_EXPOSURE:
+ exp = (ctrl->val << ov08x->cur_mode->exposure_shift) -
+ ov08x->cur_mode->exposure_margin;
+
ret = ov08x40_write_reg(ov08x, OV08X40_REG_EXPOSURE,
OV08X40_REG_VALUE_24BIT,
- ctrl->val);
+ exp);
break;
case V4L2_CID_VBLANK:
+ fll = ((ov08x->cur_mode->height + ctrl->val) <<
+ ov08x->cur_mode->exposure_shift);
+
ret = ov08x40_write_reg(ov08x, OV08X40_REG_VTS,
OV08X40_REG_VALUE_16BIT,
- ov08x->cur_mode->height
- + ctrl->val);
+ fll);
break;
case V4L2_CID_TEST_PATTERN:
ret = ov08x40_enable_test_pattern(ov08x, ctrl->val);
@@ -2812,6 +1728,7 @@ ov08x40_set_pad_format(struct v4l2_subdev *sd,
s64 h_blank;
s64 pixel_rate;
s64 link_freq;
+ u64 steps;
mutex_lock(&ov08x->mutex);
@@ -2839,13 +1756,22 @@ ov08x40_set_pad_format(struct v4l2_subdev *sd,
ov08x->cur_mode->height;
vblank_min = ov08x->cur_mode->vts_min -
ov08x->cur_mode->height;
+
+ /*
+ * The frame length line should be aligned to a multiple of 4,
+ * as provided by the sensor vendor, in normal mode.
+ */
+ steps = mode->exposure_shift == 1 ? 4 : 1;
+
__v4l2_ctrl_modify_range(ov08x->vblank, vblank_min,
OV08X40_VTS_MAX
- ov08x->cur_mode->height,
- 1,
+ steps,
vblank_def);
__v4l2_ctrl_s_ctrl(ov08x->vblank, vblank_def);
- h_blank = ov08x->cur_mode->hts;
+
+ h_blank = ov08x->cur_mode->llp - ov08x->cur_mode->width;
+
__v4l2_ctrl_modify_range(ov08x->hblank, h_blank,
h_blank, 1, h_blank);
}
@@ -2887,6 +1813,22 @@ static int ov08x40_start_streaming(struct ov08x40 *ov08x)
return ret;
}
+ /* Use i2c burst to write register on full size registers */
+ if (ov08x->cur_mode->exposure_shift == 1) {
+ ret = ov08x40_burst_fill_regs(ov08x, OV08X40_REG_XTALK_FIRST_A,
+ OV08X40_REG_XTALK_LAST_A, 0x75);
+ if (ret == 0)
+ ret = ov08x40_burst_fill_regs(ov08x,
+ OV08X40_REG_XTALK_FIRST_B,
+ OV08X40_REG_XTALK_LAST_B,
+ 0x75);
+ }
+
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set regs\n", __func__);
+ return ret;
+ }
+
/* Apply customized values from user */
ret = __v4l2_ctrl_handler_setup(ov08x->sd.ctrl_handler);
if (ret)
@@ -2948,6 +1890,9 @@ static int ov08x40_identify_module(struct ov08x40 *ov08x)
int ret;
u32 val;
+ if (ov08x->identified)
+ return 0;
+
ret = ov08x40_read_reg(ov08x, OV08X40_REG_CHIP_ID,
OV08X40_REG_VALUE_24BIT, &val);
if (ret)
@@ -2956,9 +1901,11 @@ static int ov08x40_identify_module(struct ov08x40 *ov08x)
if (val != OV08X40_CHIP_ID) {
dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
OV08X40_CHIP_ID, val);
- return -EIO;
+ return -ENXIO;
}
+ ov08x->identified = true;
+
return 0;
}
@@ -3035,7 +1982,8 @@ static int ov08x40_init_controls(struct ov08x40 *ov08x)
OV08X40_VTS_MAX - mode->height, 1,
vblank_def);
- hblank = ov08x->cur_mode->hts;
+ hblank = ov08x->cur_mode->llp - ov08x->cur_mode->width;
+
ov08x->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
V4L2_CID_HBLANK,
hblank, hblank, 1, hblank);
@@ -3175,6 +2123,7 @@ static int ov08x40_probe(struct i2c_client *client)
{
struct ov08x40 *ov08x;
int ret;
+ bool full_power;
/* Check HW config */
ret = ov08x40_check_hwcfg(&client->dev);
@@ -3190,11 +2139,14 @@ static int ov08x40_probe(struct i2c_client *client)
/* Initialize subdev */
v4l2_i2c_subdev_init(&ov08x->sd, client, &ov08x40_subdev_ops);
- /* Check module identity */
- ret = ov08x40_identify_module(ov08x);
- if (ret) {
- dev_err(&client->dev, "failed to find sensor: %d\n", ret);
- return ret;
+ full_power = acpi_dev_state_d0(&client->dev);
+ if (full_power) {
+ /* Check module identity */
+ ret = ov08x40_identify_module(ov08x);
+ if (ret) {
+ dev_err(&client->dev, "failed to find sensor: %d\n", ret);
+ return ret;
+ }
}
/* Set default mode to max resolution */
@@ -3222,11 +2174,8 @@ static int ov08x40_probe(struct i2c_client *client)
if (ret < 0)
goto error_media_entity;
- /*
- * Device is already turned on by i2c-core with ACPI domain PM.
- * Enable runtime PM and turn off the device.
- */
- pm_runtime_set_active(&client->dev);
+ if (full_power)
+ pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
@@ -3270,11 +2219,13 @@ static struct i2c_driver ov08x40_i2c_driver = {
},
.probe = ov08x40_probe,
.remove = ov08x40_remove,
+ .flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
};
module_i2c_driver(ov08x40_i2c_driver);
MODULE_AUTHOR("Jason Chen <jason.z.chen@intel.com>");
+MODULE_AUTHOR("Qingwu Zhang <qingwu.zhang@intel.com>");
MODULE_AUTHOR("Shawn Tu");
MODULE_DESCRIPTION("OmniVision OV08X40 sensor driver");
MODULE_LICENSE("GPL");