diff options
Diffstat (limited to 'drivers/media/platform/s5p-tv/sii9234_drv.c')
| -rw-r--r-- | drivers/media/platform/s5p-tv/sii9234_drv.c | 407 |
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); 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