From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/media/platform/s5p-tv/sii9234_drv.c | 408 +++++++++++++++++++++ 1 file changed, 408 insertions(+) create mode 100644 kernel/drivers/media/platform/s5p-tv/sii9234_drv.c (limited to 'kernel/drivers/media/platform/s5p-tv/sii9234_drv.c') diff --git a/kernel/drivers/media/platform/s5p-tv/sii9234_drv.c b/kernel/drivers/media/platform/s5p-tv/sii9234_drv.c new file mode 100644 index 000000000..db8c17bb4 --- /dev/null +++ b/kernel/drivers/media/platform/s5p-tv/sii9234_drv.c @@ -0,0 +1,408 @@ +/* + * Samsung MHL interface driver + * + * Copyright (C) 2011 Samsung Electronics Co.Ltd + * Author: Tomasz Stanislawski + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +MODULE_AUTHOR("Tomasz Stanislawski "); +MODULE_DESCRIPTION("Samsung MHL interface driver"); +MODULE_LICENSE("GPL"); + +struct sii9234_context { + struct i2c_client *client; + struct regulator *power; + int gpio_n_reset; + struct v4l2_subdev sd; +}; + +static inline struct sii9234_context *sd_to_context(struct v4l2_subdev *sd) +{ + return container_of(sd, struct sii9234_context, sd); +} + +static inline int sii9234_readb(struct i2c_client *client, int addr) +{ + return i2c_smbus_read_byte_data(client, addr); +} + +static inline int sii9234_writeb(struct i2c_client *client, int addr, int value) +{ + return i2c_smbus_write_byte_data(client, addr, value); +} + +static inline int sii9234_writeb_mask(struct i2c_client *client, int addr, + int value, int mask) +{ + int ret; + + ret = i2c_smbus_read_byte_data(client, addr); + if (ret < 0) + return ret; + ret = (ret & ~mask) | (value & mask); + return i2c_smbus_write_byte_data(client, addr, ret); +} + +static inline int sii9234_readb_idx(struct i2c_client *client, int addr) +{ + int ret; + ret = i2c_smbus_write_byte_data(client, 0xbc, addr >> 8); + if (ret < 0) + return ret; + ret = i2c_smbus_write_byte_data(client, 0xbd, addr & 0xff); + if (ret < 0) + return ret; + return i2c_smbus_read_byte_data(client, 0xbe); +} + +static inline int sii9234_writeb_idx(struct i2c_client *client, int addr, + int value) +{ + int ret; + ret = i2c_smbus_write_byte_data(client, 0xbc, addr >> 8); + if (ret < 0) + return ret; + ret = i2c_smbus_write_byte_data(client, 0xbd, addr & 0xff); + if (ret < 0) + return ret; + ret = i2c_smbus_write_byte_data(client, 0xbe, value); + return ret; +} + +static inline int sii9234_writeb_idx_mask(struct i2c_client *client, int addr, + int value, int mask) +{ + int ret; + + ret = sii9234_readb_idx(client, addr); + if (ret < 0) + return ret; + ret = (ret & ~mask) | (value & mask); + return sii9234_writeb_idx(client, addr, ret); +} + +static int sii9234_reset(struct sii9234_context *ctx) +{ + struct i2c_client *client = ctx->client; + struct device *dev = &client->dev; + int ret, tries; + + gpio_direction_output(ctx->gpio_n_reset, 1); + mdelay(1); + gpio_direction_output(ctx->gpio_n_reset, 0); + mdelay(1); + gpio_direction_output(ctx->gpio_n_reset, 1); + mdelay(1); + + /* going to TTPI mode */ + ret = sii9234_writeb(client, 0xc7, 0); + if (ret < 0) { + dev_err(dev, "failed to set TTPI mode\n"); + return ret; + } + for (tries = 0; tries < 100 ; ++tries) { + ret = sii9234_readb(client, 0x1b); + if (ret > 0) + break; + if (ret < 0) { + dev_err(dev, "failed to reset device\n"); + return -EIO; + } + mdelay(1); + } + if (tries == 100) { + dev_err(dev, "maximal number of tries reached\n"); + return -EIO; + } + + return 0; +} + +static int sii9234_verify_version(struct i2c_client *client) +{ + struct device *dev = &client->dev; + int family, rev, tpi_rev, dev_id, sub_id, hdcp, id; + + family = sii9234_readb(client, 0x1b); + rev = sii9234_readb(client, 0x1c) & 0x0f; + tpi_rev = sii9234_readb(client, 0x1d) & 0x7f; + dev_id = sii9234_readb_idx(client, 0x0103); + sub_id = sii9234_readb_idx(client, 0x0102); + hdcp = sii9234_readb(client, 0x30); + + if (family < 0 || rev < 0 || tpi_rev < 0 || dev_id < 0 || + sub_id < 0 || hdcp < 0) { + dev_err(dev, "failed to read chip's version\n"); + return -EIO; + } + + id = (dev_id << 8) | sub_id; + + dev_info(dev, "chip: SiL%02x family: %02x, rev: %02x\n", + id, family, rev); + dev_info(dev, "tpi_rev:%02x, hdcp: %02x\n", tpi_rev, hdcp); + if (id != 0x9234) { + dev_err(dev, "not supported chip\n"); + return -ENODEV; + } + + return 0; +} + +static u8 data[][3] = { +/* setup from driver created by doonsoo45.kim */ + { 0x01, 0x05, 0x04 }, /* Enable Auto soft reset on SCDT = 0 */ + { 0x01, 0x08, 0x35 }, /* Power Up TMDS Tx Core */ + { 0x01, 0x0d, 0x1c }, /* HDMI Transcode mode enable */ + { 0x01, 0x2b, 0x01 }, /* Enable HDCP Compliance workaround */ + { 0x01, 0x79, 0x40 }, /* daniel test...MHL_INT */ + { 0x01, 0x80, 0x34 }, /* Enable Rx PLL Clock Value */ + { 0x01, 0x90, 0x27 }, /* Enable CBUS discovery */ + { 0x01, 0x91, 0xe5 }, /* Skip RGND detection */ + { 0x01, 0x92, 0x46 }, /* Force MHD mode */ + { 0x01, 0x93, 0xdc }, /* Disable CBUS pull-up during RGND measurement */ + { 0x01, 0x94, 0x66 }, /* 1.8V CBUS VTH & GND threshold */ + { 0x01, 0x95, 0x31 }, /* RGND block & single discovery attempt */ + { 0x01, 0x96, 0x22 }, /* use 1K and 2K setting */ + { 0x01, 0xa0, 0x10 }, /* SIMG: Term mode */ + { 0x01, 0xa1, 0xfc }, /* Disable internal Mobile HD driver */ + { 0x01, 0xa3, 0xfa }, /* SIMG: Output Swing default EB, 3x Clk Mult */ + { 0x01, 0xa5, 0x80 }, /* SIMG: RGND Hysterisis, 3x mode for Beast */ + { 0x01, 0xa6, 0x0c }, /* SIMG: Swing Offset */ + { 0x02, 0x3d, 0x3f }, /* Power up CVCC 1.2V core */ + { 0x03, 0x00, 0x00 }, /* SIMG: correcting HW default */ + { 0x03, 0x11, 0x01 }, /* Enable TxPLL Clock */ + { 0x03, 0x12, 0x15 }, /* Enable Tx Clock Path & Equalizer */ + { 0x03, 0x13, 0x60 }, /* SIMG: Set termination value */ + { 0x03, 0x14, 0xf0 }, /* SIMG: Change CKDT level */ + { 0x03, 0x17, 0x07 }, /* SIMG: PLL Calrefsel */ + { 0x03, 0x1a, 0x20 }, /* VCO Cal */ + { 0x03, 0x22, 0xe0 }, /* SIMG: Auto EQ */ + { 0x03, 0x23, 0xc0 }, /* SIMG: Auto EQ */ + { 0x03, 0x24, 0xa0 }, /* SIMG: Auto EQ */ + { 0x03, 0x25, 0x80 }, /* SIMG: Auto EQ */ + { 0x03, 0x26, 0x60 }, /* SIMG: Auto EQ */ + { 0x03, 0x27, 0x40 }, /* SIMG: Auto EQ */ + { 0x03, 0x28, 0x20 }, /* SIMG: Auto EQ */ + { 0x03, 0x29, 0x00 }, /* SIMG: Auto EQ */ + { 0x03, 0x31, 0x0b }, /* SIMG: Rx PLL BW value from I2C BW ~ 4MHz */ + { 0x03, 0x45, 0x06 }, /* SIMG: DPLL Mode */ + { 0x03, 0x4b, 0x06 }, /* SIMG: Correcting HW default */ + { 0x03, 0x4c, 0xa0 }, /* Manual zone control */ + { 0x03, 0x4d, 0x02 }, /* SIMG: PLL Mode Value (order is important) */ +}; + +static int sii9234_set_internal(struct sii9234_context *ctx) +{ + struct i2c_client *client = ctx->client; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(data); ++i) { + int addr = (data[i][0] << 8) | data[i][1]; + ret = sii9234_writeb_idx(client, addr, data[i][2]); + if (ret < 0) + return ret; + } + return 0; +} + +static int sii9234_runtime_suspend(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct sii9234_context *ctx = sd_to_context(sd); + struct i2c_client *client = ctx->client; + + dev_info(dev, "suspend start\n"); + + sii9234_writeb_mask(client, 0x1e, 3, 3); + regulator_disable(ctx->power); + + return 0; +} + +static int sii9234_runtime_resume(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct sii9234_context *ctx = sd_to_context(sd); + struct i2c_client *client = ctx->client; + int ret; + + dev_info(dev, "resume start\n"); + ret = regulator_enable(ctx->power); + if (ret < 0) + return ret; + + ret = sii9234_reset(ctx); + if (ret) + goto fail; + + /* enable tpi */ + ret = sii9234_writeb_mask(client, 0x1e, 1, 0); + if (ret < 0) + goto fail; + ret = sii9234_set_internal(ctx); + if (ret < 0) + goto fail; + + return 0; + +fail: + dev_err(dev, "failed to resume\n"); + regulator_disable(ctx->power); + + return ret; +} + +static const struct dev_pm_ops sii9234_pm_ops = { + .runtime_suspend = sii9234_runtime_suspend, + .runtime_resume = sii9234_runtime_resume, +}; + +static int sii9234_s_power(struct v4l2_subdev *sd, int on) +{ + struct sii9234_context *ctx = sd_to_context(sd); + int ret; + + if (on) + ret = pm_runtime_get_sync(&ctx->client->dev); + else + ret = pm_runtime_put(&ctx->client->dev); + /* only values < 0 indicate errors */ + return ret < 0 ? ret : 0; +} + +static int sii9234_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct sii9234_context *ctx = sd_to_context(sd); + + /* (dis/en)able TDMS output */ + sii9234_writeb_mask(ctx->client, 0x1a, enable ? 0 : ~0 , 1 << 4); + return 0; +} + +static const struct v4l2_subdev_core_ops sii9234_core_ops = { + .s_power = sii9234_s_power, +}; + +static const struct v4l2_subdev_video_ops sii9234_video_ops = { + .s_stream = sii9234_s_stream, +}; + +static const struct v4l2_subdev_ops sii9234_ops = { + .core = &sii9234_core_ops, + .video = &sii9234_video_ops, +}; + +static int sii9234_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct sii9234_platform_data *pdata = dev->platform_data; + struct sii9234_context *ctx; + int ret; + + ctx = devm_kzalloc(&client->dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) { + dev_err(dev, "out of memory\n"); + ret = -ENOMEM; + goto fail; + } + ctx->client = client; + + ctx->power = devm_regulator_get(dev, "hdmi-en"); + if (IS_ERR(ctx->power)) { + dev_err(dev, "failed to acquire regulator hdmi-en\n"); + return PTR_ERR(ctx->power); + } + + ctx->gpio_n_reset = pdata->gpio_n_reset; + ret = devm_gpio_request(dev, ctx->gpio_n_reset, "MHL_RST"); + if (ret) { + dev_err(dev, "failed to acquire MHL_RST gpio\n"); + return ret; + } + + v4l2_i2c_subdev_init(&ctx->sd, client, &sii9234_ops); + + pm_runtime_enable(dev); + + /* enable device */ + ret = pm_runtime_get_sync(dev); + if (ret) + goto fail_pm; + + /* verify chip version */ + ret = sii9234_verify_version(client); + if (ret) + goto fail_pm_get; + + /* stop processing */ + pm_runtime_put(dev); + + dev_info(dev, "probe successful\n"); + + return 0; + +fail_pm_get: + pm_runtime_put_sync(dev); + +fail_pm: + pm_runtime_disable(dev); + +fail: + dev_err(dev, "probe failed\n"); + + return ret; +} + +static int sii9234_remove(struct i2c_client *client) +{ + struct device *dev = &client->dev; + + pm_runtime_disable(dev); + + dev_info(dev, "remove successful\n"); + + return 0; +} + + +static const struct i2c_device_id sii9234_id[] = { + { "SII9234", 0 }, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, sii9234_id); +static struct i2c_driver sii9234_driver = { + .driver = { + .name = "sii9234", + .owner = THIS_MODULE, + .pm = &sii9234_pm_ops, + }, + .probe = sii9234_probe, + .remove = sii9234_remove, + .id_table = sii9234_id, +}; + +module_i2c_driver(sii9234_driver); -- cgit 1.2.3-korg