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f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
93 lines
2.4 KiB
Diff
93 lines
2.4 KiB
Diff
From 34220db79008820c110473fe804cf02af3037889 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Thu, 18 May 2017 15:42:34 +0100
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Subject: [PATCH 323/454] ov5647: Add support for PWDN GPIO.
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Add support for an optional GPIO connected to PWDN on the sensor.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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drivers/media/i2c/ov5647.c | 28 ++++++++++++++++++++++++++++
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1 file changed, 28 insertions(+)
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--- a/drivers/media/i2c/ov5647.c
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+++ b/drivers/media/i2c/ov5647.c
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@@ -21,6 +21,7 @@
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#include <linux/clk.h>
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#include <linux/delay.h>
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+#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/io.h>
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@@ -35,6 +36,13 @@
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#define SENSOR_NAME "ov5647"
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+/*
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+ * From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes
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+ * high if reset is inserted after PWDN goes high, host can access sensor's
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+ * SCCB to initialize sensor."
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+ */
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+#define PWDN_ACTIVE_DELAY_MS 20
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+
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#define OV5647_SW_RESET 0x0103
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#define OV5647_REG_CHIPID_H 0x300A
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#define OV5647_REG_CHIPID_L 0x300B
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@@ -77,6 +85,7 @@ struct ov5647 {
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unsigned int height;
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int power_count;
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struct clk *xclk;
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+ struct gpio_desc *pwdn;
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};
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static inline struct ov5647 *to_state(struct v4l2_subdev *sd)
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@@ -334,6 +343,11 @@ static int ov5647_sensor_power(struct v4
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if (on && !ov5647->power_count) {
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dev_dbg(&client->dev, "OV5647 power on\n");
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+ if (ov5647->pwdn) {
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+ gpiod_set_value(ov5647->pwdn, 0);
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+ msleep(PWDN_ACTIVE_DELAY_MS);
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+ }
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+
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ret = clk_prepare_enable(ov5647->xclk);
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if (ret < 0) {
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dev_err(&client->dev, "clk prepare enable failed\n");
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@@ -371,6 +385,8 @@ static int ov5647_sensor_power(struct v4
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dev_dbg(&client->dev, "soft stby failed\n");
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clk_disable_unprepare(ov5647->xclk);
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+
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+ gpiod_set_value(ov5647->pwdn, 1);
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}
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/* Update the power count. */
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@@ -583,6 +599,10 @@ static int ov5647_probe(struct i2c_clien
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return -EINVAL;
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}
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+ /* Request the power down GPIO asserted */
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+ sensor->pwdn = devm_gpiod_get_optional(&client->dev, "pwdn",
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+ GPIOD_OUT_HIGH);
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+
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mutex_init(&sensor->lock);
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sd = &sensor->sd;
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@@ -596,7 +616,15 @@ static int ov5647_probe(struct i2c_clien
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if (ret < 0)
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goto mutex_remove;
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+ if (sensor->pwdn) {
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+ gpiod_set_value(sensor->pwdn, 0);
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+ msleep(PWDN_ACTIVE_DELAY_MS);
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+ }
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+
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ret = ov5647_detect(sd);
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+
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+ gpiod_set_value(sensor->pwdn, 1);
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+
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if (ret < 0)
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goto error;
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