| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Francisco Jerez | 1688 | 99.47% | 1 | 20.00% |
| David Howells | 4 | 0.24% | 1 | 20.00% |
| Paul Gortmaker | 3 | 0.18% | 1 | 20.00% |
| Arvind Yadav | 1 | 0.06% | 1 | 20.00% |
| Ville Syrjälä | 1 | 0.06% | 1 | 20.00% |
| Total | 1697 | 5 |
/* * Copyright (C) 2010 Francisco Jerez. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ #include <linux/module.h> #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_encoder_slave.h> #include <drm/i2c/sil164.h> struct sil164_priv { struct sil164_encoder_params config; struct i2c_client *duallink_slave; uint8_t saved_state[0x10]; uint8_t saved_slave_state[0x10]; }; #define to_sil164_priv(x) \ ((struct sil164_priv *)to_encoder_slave(x)->slave_priv) #define sil164_dbg(client, format, ...) do { \ if (drm_debug & DRM_UT_KMS) \ dev_printk(KERN_DEBUG, &client->dev, \ "%s: " format, __func__, ## __VA_ARGS__); \ } while (0) #define sil164_info(client, format, ...) \ dev_info(&client->dev, format, __VA_ARGS__) #define sil164_err(client, format, ...) \ dev_err(&client->dev, format, __VA_ARGS__) #define SIL164_I2C_ADDR_MASTER 0x38 #define SIL164_I2C_ADDR_SLAVE 0x39 /* HW register definitions */ #define SIL164_VENDOR_LO 0x0 #define SIL164_VENDOR_HI 0x1 #define SIL164_DEVICE_LO 0x2 #define SIL164_DEVICE_HI 0x3 #define SIL164_REVISION 0x4 #define SIL164_FREQ_MIN 0x6 #define SIL164_FREQ_MAX 0x7 #define SIL164_CONTROL0 0x8 # define SIL164_CONTROL0_POWER_ON 0x01 # define SIL164_CONTROL0_EDGE_RISING 0x02 # define SIL164_CONTROL0_INPUT_24BIT 0x04 # define SIL164_CONTROL0_DUAL_EDGE 0x08 # define SIL164_CONTROL0_HSYNC_ON 0x10 # define SIL164_CONTROL0_VSYNC_ON 0x20 #define SIL164_DETECT 0x9 # define SIL164_DETECT_INTR_STAT 0x01 # define SIL164_DETECT_HOTPLUG_STAT 0x02 # define SIL164_DETECT_RECEIVER_STAT 0x04 # define SIL164_DETECT_INTR_MODE_RECEIVER 0x00 # define SIL164_DETECT_INTR_MODE_HOTPLUG 0x08 # define SIL164_DETECT_OUT_MODE_HIGH 0x00 # define SIL164_DETECT_OUT_MODE_INTR 0x10 # define SIL164_DETECT_OUT_MODE_RECEIVER 0x20 # define SIL164_DETECT_OUT_MODE_HOTPLUG 0x30 # define SIL164_DETECT_VSWING_STAT 0x80 #define SIL164_CONTROL1 0xa # define SIL164_CONTROL1_DESKEW_ENABLE 0x10 # define SIL164_CONTROL1_DESKEW_INCR_SHIFT 5 #define SIL164_GPIO 0xb #define SIL164_CONTROL2 0xc # define SIL164_CONTROL2_FILTER_ENABLE 0x01 # define SIL164_CONTROL2_FILTER_SETTING_SHIFT 1 # define SIL164_CONTROL2_DUALLINK_MASTER 0x40 # define SIL164_CONTROL2_SYNC_CONT 0x80 #define SIL164_DUALLINK 0xd # define SIL164_DUALLINK_ENABLE 0x10 # define SIL164_DUALLINK_SKEW_SHIFT 5 #define SIL164_PLLZONE 0xe # define SIL164_PLLZONE_STAT 0x08 # define SIL164_PLLZONE_FORCE_ON 0x10 # define SIL164_PLLZONE_FORCE_HIGH 0x20 /* HW access functions */ static void sil164_write(struct i2c_client *client, uint8_t addr, uint8_t val) { uint8_t buf[] = {addr, val}; int ret; ret = i2c_master_send(client, buf, ARRAY_SIZE(buf)); if (ret < 0) sil164_err(client, "Error %d writing to subaddress 0x%x\n", ret, addr); } static uint8_t sil164_read(struct i2c_client *client, uint8_t addr) { uint8_t val; int ret; ret = i2c_master_send(client, &addr, sizeof(addr)); if (ret < 0) goto fail; ret = i2c_master_recv(client, &val, sizeof(val)); if (ret < 0) goto fail; return val; fail: sil164_err(client, "Error %d reading from subaddress 0x%x\n", ret, addr); return 0; } static void sil164_save_state(struct i2c_client *client, uint8_t *state) { int i; for (i = 0x8; i <= 0xe; i++) state[i] = sil164_read(client, i); } static void sil164_restore_state(struct i2c_client *client, uint8_t *state) { int i; for (i = 0x8; i <= 0xe; i++) sil164_write(client, i, state[i]); } static void sil164_set_power_state(struct i2c_client *client, bool on) { uint8_t control0 = sil164_read(client, SIL164_CONTROL0); if (on) control0 |= SIL164_CONTROL0_POWER_ON; else control0 &= ~SIL164_CONTROL0_POWER_ON; sil164_write(client, SIL164_CONTROL0, control0); } static void sil164_init_state(struct i2c_client *client, struct sil164_encoder_params *config, bool duallink) { sil164_write(client, SIL164_CONTROL0, SIL164_CONTROL0_HSYNC_ON | SIL164_CONTROL0_VSYNC_ON | (config->input_edge ? SIL164_CONTROL0_EDGE_RISING : 0) | (config->input_width ? SIL164_CONTROL0_INPUT_24BIT : 0) | (config->input_dual ? SIL164_CONTROL0_DUAL_EDGE : 0)); sil164_write(client, SIL164_DETECT, SIL164_DETECT_INTR_STAT | SIL164_DETECT_OUT_MODE_RECEIVER); sil164_write(client, SIL164_CONTROL1, (config->input_skew ? SIL164_CONTROL1_DESKEW_ENABLE : 0) | (((config->input_skew + 4) & 0x7) << SIL164_CONTROL1_DESKEW_INCR_SHIFT)); sil164_write(client, SIL164_CONTROL2, SIL164_CONTROL2_SYNC_CONT | (config->pll_filter ? 0 : SIL164_CONTROL2_FILTER_ENABLE) | (4 << SIL164_CONTROL2_FILTER_SETTING_SHIFT)); sil164_write(client, SIL164_PLLZONE, 0); if (duallink) sil164_write(client, SIL164_DUALLINK, SIL164_DUALLINK_ENABLE | (((config->duallink_skew + 4) & 0x7) << SIL164_DUALLINK_SKEW_SHIFT)); else sil164_write(client, SIL164_DUALLINK, 0); } /* DRM encoder functions */ static void sil164_encoder_set_config(struct drm_encoder *encoder, void *params) { struct sil164_priv *priv = to_sil164_priv(encoder); priv->config = *(struct sil164_encoder_params *)params; } static void sil164_encoder_dpms(struct drm_encoder *encoder, int mode) { struct sil164_priv *priv = to_sil164_priv(encoder); bool on = (mode == DRM_MODE_DPMS_ON); bool duallink = (on && encoder->crtc->mode.clock > 165000); sil164_set_power_state(drm_i2c_encoder_get_client(encoder), on); if (priv->duallink_slave) sil164_set_power_state(priv->duallink_slave, duallink); } static void sil164_encoder_save(struct drm_encoder *encoder) { struct sil164_priv *priv = to_sil164_priv(encoder); sil164_save_state(drm_i2c_encoder_get_client(encoder), priv->saved_state); if (priv->duallink_slave) sil164_save_state(priv->duallink_slave, priv->saved_slave_state); } static void sil164_encoder_restore(struct drm_encoder *encoder) { struct sil164_priv *priv = to_sil164_priv(encoder); sil164_restore_state(drm_i2c_encoder_get_client(encoder), priv->saved_state); if (priv->duallink_slave) sil164_restore_state(priv->duallink_slave, priv->saved_slave_state); } static int sil164_encoder_mode_valid(struct drm_encoder *encoder, struct drm_display_mode *mode) { struct sil164_priv *priv = to_sil164_priv(encoder); if (mode->clock < 32000) return MODE_CLOCK_LOW; if (mode->clock > 330000 || (mode->clock > 165000 && !priv->duallink_slave)) return MODE_CLOCK_HIGH; return MODE_OK; } static void sil164_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct sil164_priv *priv = to_sil164_priv(encoder); bool duallink = adjusted_mode->clock > 165000; sil164_init_state(drm_i2c_encoder_get_client(encoder), &priv->config, duallink); if (priv->duallink_slave) sil164_init_state(priv->duallink_slave, &priv->config, duallink); sil164_encoder_dpms(encoder, DRM_MODE_DPMS_ON); } static enum drm_connector_status sil164_encoder_detect(struct drm_encoder *encoder, struct drm_connector *connector) { struct i2c_client *client = drm_i2c_encoder_get_client(encoder); if (sil164_read(client, SIL164_DETECT) & SIL164_DETECT_HOTPLUG_STAT) return connector_status_connected; else return connector_status_disconnected; } static int sil164_encoder_get_modes(struct drm_encoder *encoder, struct drm_connector *connector) { return 0; } static int sil164_encoder_create_resources(struct drm_encoder *encoder, struct drm_connector *connector) { return 0; } static int sil164_encoder_set_property(struct drm_encoder *encoder, struct drm_connector *connector, struct drm_property *property, uint64_t val) { return 0; } static void sil164_encoder_destroy(struct drm_encoder *encoder) { struct sil164_priv *priv = to_sil164_priv(encoder); i2c_unregister_device(priv->duallink_slave); kfree(priv); drm_i2c_encoder_destroy(encoder); } static const struct drm_encoder_slave_funcs sil164_encoder_funcs = { .set_config = sil164_encoder_set_config, .destroy = sil164_encoder_destroy, .dpms = sil164_encoder_dpms, .save = sil164_encoder_save, .restore = sil164_encoder_restore, .mode_valid = sil164_encoder_mode_valid, .mode_set = sil164_encoder_mode_set, .detect = sil164_encoder_detect, .get_modes = sil164_encoder_get_modes, .create_resources = sil164_encoder_create_resources, .set_property = sil164_encoder_set_property, }; /* I2C driver functions */ static int sil164_probe(struct i2c_client *client, const struct i2c_device_id *id) { int vendor = sil164_read(client, SIL164_VENDOR_HI) << 8 | sil164_read(client, SIL164_VENDOR_LO); int device = sil164_read(client, SIL164_DEVICE_HI) << 8 | sil164_read(client, SIL164_DEVICE_LO); int rev = sil164_read(client, SIL164_REVISION); if (vendor != 0x1 || device != 0x6) { sil164_dbg(client, "Unknown device %x:%x.%x\n", vendor, device, rev); return -ENODEV; } sil164_info(client, "Detected device %x:%x.%x\n", vendor, device, rev); return 0; } static int sil164_remove(struct i2c_client *client) { return 0; } static struct i2c_client * sil164_detect_slave(struct i2c_client *client) { struct i2c_adapter *adap = client->adapter; struct i2c_msg msg = { .addr = SIL164_I2C_ADDR_SLAVE, .len = 0, }; const struct i2c_board_info info = { I2C_BOARD_INFO("sil164", SIL164_I2C_ADDR_SLAVE) }; if (i2c_transfer(adap, &msg, 1) != 1) { sil164_dbg(adap, "No dual-link slave found."); return NULL; } return i2c_new_device(adap, &info); } static int sil164_encoder_init(struct i2c_client *client, struct drm_device *dev, struct drm_encoder_slave *encoder) { struct sil164_priv *priv; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; encoder->slave_priv = priv; encoder->slave_funcs = &sil164_encoder_funcs; priv->duallink_slave = sil164_detect_slave(client); return 0; } static const struct i2c_device_id sil164_ids[] = { { "sil164", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, sil164_ids); static struct drm_i2c_encoder_driver sil164_driver = { .i2c_driver = { .probe = sil164_probe, .remove = sil164_remove, .driver = { .name = "sil164", }, .id_table = sil164_ids, }, .encoder_init = sil164_encoder_init, }; /* Module initialization */ static int __init sil164_init(void) { return drm_i2c_encoder_register(THIS_MODULE, &sil164_driver); } static void __exit sil164_exit(void) { drm_i2c_encoder_unregister(&sil164_driver); } MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>"); MODULE_DESCRIPTION("Silicon Image sil164 TMDS transmitter driver"); MODULE_LICENSE("GPL and additional rights"); module_init(sil164_init); module_exit(sil164_exit);
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