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path: root/drivers/media/platform/s5p-tv/sii9234_drv.c
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Diffstat (limited to 'drivers/media/platform/s5p-tv/sii9234_drv.c')
-rw-r--r--drivers/media/platform/s5p-tv/sii9234_drv.c407
1 files changed, 0 insertions, 407 deletions
diff --git a/drivers/media/platform/s5p-tv/sii9234_drv.c b/drivers/media/platform/s5p-tv/sii9234_drv.c
deleted file mode 100644
index 0a97f9ab4f76..000000000000
--- a/drivers/media/platform/s5p-tv/sii9234_drv.c
+++ /dev/null
@@ -1,407 +0,0 @@
-/*
- * Samsung MHL interface driver
- *
- * Copyright (C) 2011 Samsung Electronics Co.Ltd
- * Author: Tomasz Stanislawski <t.stanislaws@samsung.com>
- *
- * 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 <linux/delay.h>
-#include <linux/err.h>
-#include <linux/freezer.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kthread.h>
-#include <linux/module.h>
-#include <linux/pm_runtime.h>
-#include <linux/regulator/machine.h>
-#include <linux/slab.h>
-
-#include <linux/platform_data/media/sii9234.h>
-#include <media/v4l2-subdev.h>
-
-MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>");
-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",
- .pm = &sii9234_pm_ops,
- },
- .probe = sii9234_probe,
- .remove = sii9234_remove,
- .id_table = sii9234_id,
-};
-
-module_i2c_driver(sii9234_driver);