| /* Copyright (c) 2017-2018, 2020, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/of_gpio.h> |
| #include <linux/gpio.h> |
| #include <linux/qpnp/pin.h> |
| #include <linux/delay.h> |
| #include <linux/interrupt.h> |
| #include <linux/leds.h> |
| #include <linux/qpnp/pwm.h> |
| #include <linux/of_device.h> |
| |
| #include "mdss.h" |
| #include "mdss_panel.h" |
| #include "mdss_spi_panel.h" |
| #include "mdss_spi_client.h" |
| #include "mdp3.h" |
| |
| DEFINE_LED_TRIGGER(bl_led_trigger); |
| static int mdss_spi_panel_reset(struct mdss_panel_data *pdata, int enable) |
| { |
| struct spi_panel_data *ctrl_pdata = NULL; |
| struct mdss_panel_info *pinfo = NULL; |
| int i, rc = 0; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| if (!gpio_is_valid(ctrl_pdata->rst_gpio)) { |
| pr_debug("%s:%d, reset line not configured\n", |
| __func__, __LINE__); |
| return rc; |
| } |
| |
| if (!gpio_is_valid(ctrl_pdata->disp_dc_gpio)) { |
| pr_debug("%s:%d, dc line not configured\n", |
| __func__, __LINE__); |
| return rc; |
| } |
| |
| pr_debug("%s: enable = %d\n", __func__, enable); |
| pinfo = &(ctrl_pdata->panel_data.panel_info); |
| |
| if (enable) { |
| rc = gpio_request(ctrl_pdata->rst_gpio, "disp_rst_n"); |
| if (rc) { |
| pr_err("display reset gpio request failed\n"); |
| return rc; |
| } |
| |
| rc = gpio_request(ctrl_pdata->disp_dc_gpio, "disp_dc"); |
| if (rc) { |
| pr_err("display dc gpio request failed\n"); |
| return rc; |
| } |
| |
| if (!pinfo->cont_splash_enabled) { |
| for (i = 0; i < pdata->panel_info.rst_seq_len; ++i) { |
| gpio_direction_output((ctrl_pdata->rst_gpio), |
| pdata->panel_info.rst_seq[i]); |
| if (pdata->panel_info.rst_seq[++i]) |
| usleep_range(pinfo->rst_seq[i] * 1000, |
| pinfo->rst_seq[i] * 1000); |
| } |
| } |
| |
| if (ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT) { |
| pr_debug("%s: Panel Not properly turned OFF\n", |
| __func__); |
| ctrl_pdata->ctrl_state &= ~CTRL_STATE_PANEL_INIT; |
| pr_err("%s: Reset panel done\n", __func__); |
| } |
| } else { |
| gpio_direction_output((ctrl_pdata->rst_gpio), 0); |
| gpio_free(ctrl_pdata->rst_gpio); |
| |
| gpio_direction_output(ctrl_pdata->disp_dc_gpio, 0); |
| gpio_free(ctrl_pdata->disp_dc_gpio); |
| } |
| return rc; |
| } |
| |
| |
| static int mdss_spi_panel_pinctrl_set_state( |
| struct spi_panel_data *ctrl_pdata, |
| bool active) |
| { |
| struct pinctrl_state *pin_state; |
| int rc = -EFAULT; |
| |
| if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.pinctrl)) |
| return PTR_ERR(ctrl_pdata->pin_res.pinctrl); |
| |
| pin_state = active ? ctrl_pdata->pin_res.gpio_state_active |
| : ctrl_pdata->pin_res.gpio_state_suspend; |
| if (!IS_ERR_OR_NULL(pin_state)) { |
| rc = pinctrl_select_state(ctrl_pdata->pin_res.pinctrl, |
| pin_state); |
| if (rc) |
| pr_err("%s: can not set %s pins\n", __func__, |
| active ? MDSS_PINCTRL_STATE_DEFAULT |
| : MDSS_PINCTRL_STATE_SLEEP); |
| } else { |
| pr_err("%s: invalid '%s' pinstate\n", __func__, |
| active ? MDSS_PINCTRL_STATE_DEFAULT |
| : MDSS_PINCTRL_STATE_SLEEP); |
| } |
| return rc; |
| } |
| |
| |
| static int mdss_spi_panel_pinctrl_init(struct platform_device *pdev) |
| { |
| struct spi_panel_data *ctrl_pdata; |
| |
| ctrl_pdata = platform_get_drvdata(pdev); |
| ctrl_pdata->pin_res.pinctrl = devm_pinctrl_get(&pdev->dev); |
| if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.pinctrl)) { |
| pr_err("%s: failed to get pinctrl\n", __func__); |
| return PTR_ERR(ctrl_pdata->pin_res.pinctrl); |
| } |
| |
| ctrl_pdata->pin_res.gpio_state_active |
| = pinctrl_lookup_state(ctrl_pdata->pin_res.pinctrl, |
| MDSS_PINCTRL_STATE_DEFAULT); |
| if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.gpio_state_active)) |
| pr_warn("%s: can not get default pinstate\n", __func__); |
| |
| ctrl_pdata->pin_res.gpio_state_suspend |
| = pinctrl_lookup_state(ctrl_pdata->pin_res.pinctrl, |
| MDSS_PINCTRL_STATE_SLEEP); |
| if (IS_ERR_OR_NULL(ctrl_pdata->pin_res.gpio_state_suspend)) |
| pr_warn("%s: can not get sleep pinstate\n", __func__); |
| |
| return 0; |
| } |
| |
| |
| static int mdss_spi_panel_power_on(struct mdss_panel_data *pdata) |
| { |
| int ret = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| if (!mdp3_res->secure_reg_on) { |
| ret = msm_mdss_enable_vreg( |
| ctrl_pdata->panel_power_data.vreg_config, |
| ctrl_pdata->panel_power_data.num_vreg, 1); |
| if (ret) { |
| pr_err("%s: failed to enable vregs for %s\n", |
| __func__, "PANEL_PM"); |
| } |
| } |
| |
| /* |
| * If continuous splash screen feature is enabled, then we need to |
| * request all the GPIOs that have already been configured in the |
| * bootloader. This needs to be done irresepective of whether |
| * the lp11_init flag is set or not. |
| */ |
| if (pdata->panel_info.cont_splash_enabled) { |
| if (mdss_spi_panel_pinctrl_set_state(ctrl_pdata, true)) |
| pr_debug("reset enable: pinctrl not enabled\n"); |
| |
| ret = mdss_spi_panel_reset(pdata, 1); |
| if (ret) |
| pr_err("%s: Panel reset failed. rc=%d\n", |
| __func__, ret); |
| } |
| |
| return ret; |
| } |
| |
| |
| static int mdss_spi_panel_power_off(struct mdss_panel_data *pdata) |
| { |
| int ret = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| ret = -EINVAL; |
| goto end; |
| } |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| ret = mdss_spi_panel_reset(pdata, 0); |
| if (ret) { |
| pr_warn("%s: Panel reset failed. rc=%d\n", __func__, ret); |
| ret = 0; |
| } |
| |
| if (mdss_spi_panel_pinctrl_set_state(ctrl_pdata, false)) |
| pr_warn("reset disable: pinctrl not enabled\n"); |
| |
| if (!mdp3_res->secure_reg_on) { |
| ret = msm_mdss_enable_vreg( |
| ctrl_pdata->panel_power_data.vreg_config, |
| ctrl_pdata->panel_power_data.num_vreg, 0); |
| if (ret) |
| pr_err("%s: failed to disable vregs for %s\n", |
| __func__, "PANEL_PM"); |
| } |
| |
| end: |
| return ret; |
| } |
| |
| |
| static int mdss_spi_panel_power_ctrl(struct mdss_panel_data *pdata, |
| int power_state) |
| { |
| int ret; |
| struct mdss_panel_info *pinfo; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| pinfo = &pdata->panel_info; |
| pr_debug("%s: cur_power_state=%d req_power_state=%d\n", __func__, |
| pinfo->panel_power_state, power_state); |
| |
| if (pinfo->panel_power_state == power_state) { |
| pr_debug("%s: no change needed\n", __func__); |
| return 0; |
| } |
| |
| switch (power_state) { |
| case MDSS_PANEL_POWER_OFF: |
| ret = mdss_spi_panel_power_off(pdata); |
| break; |
| case MDSS_PANEL_POWER_ON: |
| ret = mdss_spi_panel_power_on(pdata); |
| break; |
| default: |
| pr_err("%s: unknown panel power state requested (%d)\n", |
| __func__, power_state); |
| ret = -EINVAL; |
| } |
| |
| if (!ret) |
| pinfo->panel_power_state = power_state; |
| |
| return ret; |
| } |
| |
| static int mdss_spi_panel_unblank(struct mdss_panel_data *pdata) |
| { |
| int ret = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| if (!(ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT)) { |
| ret = ctrl_pdata->on(pdata); |
| if (ret) { |
| pr_err("%s: unable to initialize the panel\n", |
| __func__); |
| return ret; |
| } |
| ctrl_pdata->ctrl_state |= CTRL_STATE_PANEL_INIT; |
| } |
| |
| return ret; |
| } |
| |
| static int mdss_spi_panel_blank(struct mdss_panel_data *pdata, int power_state) |
| { |
| int ret = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| if (ctrl_pdata->ctrl_state & CTRL_STATE_PANEL_INIT) { |
| ret = ctrl_pdata->off(pdata); |
| if (ret) { |
| pr_err("%s: Panel OFF failed\n", __func__); |
| return ret; |
| } |
| ctrl_pdata->ctrl_state &= ~CTRL_STATE_PANEL_INIT; |
| } |
| |
| return ret; |
| } |
| |
| |
| static int mdss_spi_panel_event_handler(struct mdss_panel_data *pdata, |
| int event, void *arg) |
| { |
| int rc = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| int power_state; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| switch (event) { |
| case MDSS_EVENT_LINK_READY: |
| rc = mdss_spi_panel_power_ctrl(pdata, MDSS_PANEL_POWER_ON); |
| if (rc) { |
| pr_err("%s:Panel power on failed. rc=%d\n", |
| __func__, rc); |
| return rc; |
| } |
| mdss_spi_panel_pinctrl_set_state(ctrl_pdata, true); |
| mdss_spi_panel_reset(pdata, 1); |
| break; |
| case MDSS_EVENT_UNBLANK: |
| rc = mdss_spi_panel_unblank(pdata); |
| break; |
| case MDSS_EVENT_PANEL_ON: |
| ctrl_pdata->ctrl_state |= CTRL_STATE_MDP_ACTIVE; |
| break; |
| case MDSS_EVENT_BLANK: |
| power_state = (int) (unsigned long) arg; |
| break; |
| case MDSS_EVENT_PANEL_OFF: |
| power_state = (int) (unsigned long) arg; |
| ctrl_pdata->ctrl_state &= ~CTRL_STATE_MDP_ACTIVE; |
| rc = mdss_spi_panel_blank(pdata, power_state); |
| rc = mdss_spi_panel_power_ctrl(pdata, power_state); |
| break; |
| default: |
| pr_debug("%s: unhandled event=%d\n", __func__, event); |
| break; |
| } |
| pr_debug("%s-:event=%d, rc=%d\n", __func__, event, rc); |
| return rc; |
| } |
| |
| int is_spi_panel_continuous_splash_on(struct mdss_panel_data *pdata) |
| { |
| int i = 0, voltage = 0; |
| struct mdss_vreg *vreg; |
| int num_vreg; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| vreg = ctrl_pdata->panel_power_data.vreg_config; |
| num_vreg = ctrl_pdata->panel_power_data.num_vreg; |
| |
| for (i = 0; i < num_vreg; i++) { |
| if (regulator_is_enabled(vreg[i].vreg) <= 0) |
| return false; |
| voltage = regulator_get_voltage(vreg[i].vreg); |
| if (!(voltage >= vreg[i].min_voltage && |
| voltage <= vreg[i].max_voltage)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void enable_spi_panel_te_irq(struct spi_panel_data *ctrl_pdata, |
| bool enable) |
| { |
| static bool is_enabled = true; |
| |
| if (is_enabled == enable) |
| return; |
| |
| if (!gpio_is_valid(ctrl_pdata->disp_te_gpio)) { |
| pr_err("%s:%d,SPI panel TE GPIO not configured\n", |
| __func__, __LINE__); |
| return; |
| } |
| |
| if (enable) |
| enable_irq(gpio_to_irq(ctrl_pdata->disp_te_gpio)); |
| else |
| disable_irq(gpio_to_irq(ctrl_pdata->disp_te_gpio)); |
| |
| is_enabled = enable; |
| } |
| |
| int mdss_spi_panel_kickoff(struct mdss_panel_data *pdata, |
| char __iomem *buf, int len, int dma_stride) |
| { |
| struct spi_panel_data *ctrl_pdata = NULL; |
| char *tx_buf; |
| int rc = 0; |
| int panel_yres; |
| int panel_xres; |
| int padding_length = 0; |
| int actual_stride = 0; |
| int byte_per_pixel = 0; |
| int scan_count = 0; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| tx_buf = ctrl_pdata->tx_buf; |
| panel_xres = ctrl_pdata->panel_data.panel_info.xres; |
| panel_yres = ctrl_pdata->panel_data.panel_info.yres; |
| |
| byte_per_pixel = ctrl_pdata->panel_data.panel_info.bpp / 8; |
| actual_stride = panel_xres * byte_per_pixel; |
| padding_length = dma_stride - actual_stride; |
| |
| /* remove the padding and copy to continuous buffer */ |
| while (scan_count < panel_yres) { |
| memcpy((tx_buf + scan_count * actual_stride), |
| (buf + scan_count * (actual_stride + padding_length)), |
| actual_stride); |
| scan_count++; |
| } |
| |
| enable_spi_panel_te_irq(ctrl_pdata, true); |
| |
| mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| reinit_completion(&ctrl_pdata->spi_panel_te); |
| |
| rc = wait_for_completion_timeout(&ctrl_pdata->spi_panel_te, |
| msecs_to_jiffies(SPI_PANEL_TE_TIMEOUT)); |
| |
| if (rc == 0) |
| pr_err("wait panel TE time out\n"); |
| |
| rc = mdss_spi_tx_pixel(tx_buf, ctrl_pdata->byte_pre_frame); |
| mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| |
| return rc; |
| } |
| |
| static int mdss_spi_read_panel_data(struct mdss_panel_data *pdata, |
| u8 reg_addr, u8 *data, u8 len) |
| { |
| int rc = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| gpio_direction_output(ctrl_pdata->disp_dc_gpio, 0); |
| rc = mdss_spi_read_data(reg_addr, data, len); |
| gpio_direction_output(ctrl_pdata->disp_dc_gpio, 1); |
| mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| |
| return rc; |
| } |
| |
| static int mdss_spi_panel_on(struct mdss_panel_data *pdata) |
| { |
| struct spi_panel_data *ctrl = NULL; |
| struct mdss_panel_info *pinfo; |
| int i; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| pinfo = &pdata->panel_info; |
| ctrl = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| for (i = 0; i < ctrl->on_cmds.cmd_cnt; i++) { |
| /* pull down dc gpio indicate this is command */ |
| gpio_direction_output(ctrl->disp_dc_gpio, 0); |
| mdss_spi_tx_command(ctrl->on_cmds.cmds[i].command); |
| gpio_direction_output((ctrl->disp_dc_gpio), 1); |
| |
| if (ctrl->on_cmds.cmds[i].dchdr.dlen > 1) { |
| mdss_spi_tx_parameter(ctrl->on_cmds.cmds[i].parameter, |
| ctrl->on_cmds.cmds[i].dchdr.dlen-1); |
| } |
| if (ctrl->on_cmds.cmds[i].dchdr.wait != 0) |
| msleep(ctrl->on_cmds.cmds[i].dchdr.wait); |
| } |
| |
| pinfo->blank_state = MDSS_PANEL_BLANK_UNBLANK; |
| |
| pr_debug("%s:-\n", __func__); |
| |
| return 0; |
| } |
| |
| |
| static int mdss_spi_panel_off(struct mdss_panel_data *pdata) |
| { |
| struct spi_panel_data *ctrl = NULL; |
| struct mdss_panel_info *pinfo; |
| int i; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return -EINVAL; |
| } |
| |
| pinfo = &pdata->panel_info; |
| ctrl = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| for (i = 0; i < ctrl->off_cmds.cmd_cnt; i++) { |
| /* pull down dc gpio indicate this is command */ |
| gpio_direction_output(ctrl->disp_dc_gpio, 0); |
| mdss_spi_tx_command(ctrl->off_cmds.cmds[i].command); |
| gpio_direction_output((ctrl->disp_dc_gpio), 1); |
| |
| if (ctrl->off_cmds.cmds[i].dchdr.dlen > 1) { |
| mdss_spi_tx_parameter(ctrl->off_cmds.cmds[i].parameter, |
| ctrl->off_cmds.cmds[i].dchdr.dlen-1); |
| } |
| |
| if (ctrl->off_cmds.cmds[i].dchdr.wait != 0) |
| msleep(ctrl->off_cmds.cmds[i].dchdr.wait); |
| } |
| |
| pinfo->blank_state = MDSS_PANEL_BLANK_BLANK; |
| |
| pr_debug("%s:-\n", __func__); |
| return 0; |
| } |
| |
| static void mdss_spi_put_dt_vreg_data(struct device *dev, |
| struct mdss_module_power *module_power) |
| { |
| if (!module_power) { |
| pr_err("%s: invalid input\n", __func__); |
| return; |
| } |
| |
| if (module_power->vreg_config) { |
| devm_kfree(dev, module_power->vreg_config); |
| module_power->vreg_config = NULL; |
| } |
| module_power->num_vreg = 0; |
| } |
| |
| |
| static int mdss_spi_get_panel_vreg_data(struct device *dev, |
| struct mdss_module_power *mp) |
| { |
| int i = 0, rc = 0; |
| u32 tmp = 0; |
| struct device_node *of_node = NULL, *supply_node = NULL; |
| struct device_node *supply_root_node = NULL; |
| |
| if (!dev || !mp) { |
| pr_err("%s: invalid input\n", __func__); |
| rc = -EINVAL; |
| return rc; |
| } |
| |
| of_node = dev->of_node; |
| |
| mp->num_vreg = 0; |
| |
| supply_root_node = of_get_child_by_name(of_node, |
| "qcom,panel-supply-entries"); |
| |
| for_each_available_child_of_node(supply_root_node, supply_node) { |
| mp->num_vreg++; |
| } |
| if (mp->num_vreg == 0) { |
| pr_debug("%s: no vreg\n", __func__); |
| goto novreg; |
| } else { |
| pr_debug("%s: vreg found. count=%d\n", __func__, mp->num_vreg); |
| } |
| |
| mp->vreg_config = kcalloc(mp->num_vreg, sizeof(struct mdss_vreg), |
| GFP_KERNEL); |
| |
| if (mp->vreg_config != NULL) { |
| for_each_available_child_of_node(supply_root_node, |
| supply_node) { |
| const char *st = NULL; |
| /* vreg-name */ |
| rc = of_property_read_string(supply_node, |
| "qcom,supply-name", &st); |
| if (rc) { |
| pr_err("%s: error reading name. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| snprintf(mp->vreg_config[i].vreg_name, |
| ARRAY_SIZE((mp->vreg_config[i].vreg_name)), |
| "%s", st); |
| /* vreg-min-voltage */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-min-voltage", &tmp); |
| if (rc) { |
| pr_err("%s: error reading min volt. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| mp->vreg_config[i].min_voltage = tmp; |
| |
| /* vreg-max-voltage */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-max-voltage", &tmp); |
| if (rc) { |
| pr_err("%s: error reading max volt. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| mp->vreg_config[i].max_voltage = tmp; |
| |
| /* enable-load */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-enable-load", &tmp); |
| if (rc) { |
| pr_err("%s: error read enable load. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| mp->vreg_config[i].load[DSS_REG_MODE_ENABLE] = tmp; |
| |
| /* disable-load */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-disable-load", &tmp); |
| if (rc) { |
| pr_err("%s: error read disable load. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| mp->vreg_config[i].load[DSS_REG_MODE_DISABLE] = tmp; |
| |
| /* pre-sleep */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-pre-on-sleep", &tmp); |
| if (rc) { |
| pr_debug("%s: error read pre on value\n", |
| __func__); |
| rc = 0; |
| } else { |
| mp->vreg_config[i].pre_on_sleep = tmp; |
| } |
| |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-pre-off-sleep", &tmp); |
| if (rc) { |
| pr_debug("%s: error read pre off value\n", |
| __func__); |
| rc = 0; |
| } else { |
| mp->vreg_config[i].pre_off_sleep = tmp; |
| } |
| |
| /* post-sleep */ |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-post-on-sleep", &tmp); |
| if (rc) { |
| pr_debug("%s: error read post on value\n", |
| __func__); |
| rc = 0; |
| } else { |
| mp->vreg_config[i].post_on_sleep = tmp; |
| } |
| |
| rc = of_property_read_u32(supply_node, |
| "qcom,supply-post-off-sleep", &tmp); |
| if (rc) { |
| pr_debug("%s: error read post off value\n", |
| __func__); |
| rc = 0; |
| } else { |
| mp->vreg_config[i].post_off_sleep = tmp; |
| } |
| |
| ++i; |
| } |
| } |
| return rc; |
| error: |
| kfree(mp->vreg_config); |
| mp->vreg_config = NULL; |
| |
| novreg: |
| mp->num_vreg = 0; |
| |
| return rc; |
| |
| } |
| |
| static int mdss_spi_panel_parse_cmds(struct device_node *np, |
| struct spi_panel_cmds *pcmds, char *cmd_key) |
| { |
| const char *data; |
| int blen = 0, len; |
| char *buf, *bp; |
| struct spi_ctrl_hdr *dchdr; |
| int i, cnt; |
| |
| data = of_get_property(np, cmd_key, &blen); |
| if (!data) { |
| pr_err("%s: failed, key=%s\n", __func__, cmd_key); |
| return -ENOMEM; |
| } |
| |
| buf = kcalloc(blen, sizeof(char), GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| memcpy(buf, data, blen); |
| |
| /* scan dcs commands */ |
| bp = buf; |
| len = blen; |
| cnt = 0; |
| while (len >= sizeof(*dchdr)) { |
| dchdr = (struct spi_ctrl_hdr *)bp; |
| if (dchdr->dlen > len) { |
| pr_err("%s: dtsi parse error, len=%d", |
| __func__, dchdr->dlen); |
| goto exit_free; |
| } |
| bp += sizeof(*dchdr); |
| len -= sizeof(*dchdr); |
| bp += dchdr->dlen; |
| len -= dchdr->dlen; |
| cnt++; |
| } |
| |
| if (len != 0) { |
| pr_err("%s: dcs_cmd=%x len=%d error", |
| __func__, buf[0], len); |
| goto exit_free; |
| } |
| |
| pcmds->cmds = kcalloc(cnt, sizeof(struct spi_cmd_desc), |
| GFP_KERNEL); |
| if (!pcmds->cmds) |
| goto exit_free; |
| |
| pcmds->cmd_cnt = cnt; |
| pcmds->buf = buf; |
| pcmds->blen = blen; |
| |
| bp = buf; |
| len = blen; |
| for (i = 0; i < cnt; i++) { |
| dchdr = (struct spi_ctrl_hdr *)bp; |
| len -= sizeof(*dchdr); |
| bp += sizeof(*dchdr); |
| pcmds->cmds[i].dchdr = *dchdr; |
| pcmds->cmds[i].command = bp; |
| pcmds->cmds[i].parameter = bp + sizeof(char); |
| bp += dchdr->dlen; |
| len -= dchdr->dlen; |
| } |
| |
| pr_debug("%s: dcs_cmd=%x, len=%d, cmd_cnt=%d\n", __func__, |
| pcmds->buf[0], pcmds->blen, pcmds->cmd_cnt); |
| |
| return 0; |
| |
| exit_free: |
| kfree(buf); |
| return -ENOMEM; |
| } |
| static int mdss_spi_panel_parse_reset_seq(struct device_node *np, |
| u32 rst_seq[MDSS_SPI_RST_SEQ_LEN], u32 *rst_len, |
| const char *name) |
| { |
| int num = 0, i; |
| int rc; |
| struct property *data; |
| u32 tmp[MDSS_SPI_RST_SEQ_LEN]; |
| |
| *rst_len = 0; |
| data = of_find_property(np, name, &num); |
| num /= sizeof(u32); |
| if (!data || !num || num > MDSS_SPI_RST_SEQ_LEN || num % 2) { |
| pr_err("%s:%d, error reading %s, length found = %d\n", |
| __func__, __LINE__, name, num); |
| } else { |
| rc = of_property_read_u32_array(np, name, tmp, num); |
| if (rc) |
| pr_err("%s:%d, error reading %s, rc = %d\n", |
| __func__, __LINE__, name, rc); |
| else { |
| for (i = 0; i < num; ++i) |
| rst_seq[i] = tmp[i]; |
| *rst_len = num; |
| } |
| } |
| return 0; |
| } |
| |
| static bool mdss_send_panel_cmd_for_esd(struct spi_panel_data *ctrl_pdata) |
| { |
| |
| if (ctrl_pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return false; |
| } |
| |
| mutex_lock(&ctrl_pdata->spi_tx_mutex); |
| mdss_spi_panel_on(&ctrl_pdata->panel_data); |
| mutex_unlock(&ctrl_pdata->spi_tx_mutex); |
| |
| return true; |
| } |
| |
| static bool mdss_spi_reg_status_check(struct spi_panel_data *ctrl_pdata) |
| { |
| int ret = 0; |
| int i = 0; |
| |
| if (ctrl_pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return false; |
| } |
| |
| pr_debug("%s: Checking Register status\n", __func__); |
| |
| ret = mdss_spi_read_panel_data(&ctrl_pdata->panel_data, |
| ctrl_pdata->panel_status_reg, |
| ctrl_pdata->act_status_value, |
| ctrl_pdata->status_cmds_rlen); |
| if (ret < 0) { |
| pr_err("%s: Read status register returned error\n", __func__); |
| } else { |
| for (i = 0; i < ctrl_pdata->status_cmds_rlen; i++) { |
| pr_debug("act_value[%d] = %x, exp_value[%d] = %x\n", |
| i, ctrl_pdata->act_status_value[i], |
| i, ctrl_pdata->exp_status_value[i]); |
| if (ctrl_pdata->act_status_value[i] != |
| ctrl_pdata->exp_status_value[i]) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| static void mdss_spi_parse_esd_params(struct device_node *np, |
| struct spi_panel_data *ctrl) |
| { |
| u32 tmp; |
| int rc; |
| struct property *data; |
| const char *string; |
| struct mdss_panel_info *pinfo = &ctrl->panel_data.panel_info; |
| |
| pinfo->esd_check_enabled = of_property_read_bool(np, |
| "qcom,esd-check-enabled"); |
| |
| if (!pinfo->esd_check_enabled) |
| return; |
| |
| ctrl->status_mode = SPI_ESD_MAX; |
| |
| rc = of_property_read_string(np, |
| "qcom,mdss-spi-panel-status-check-mode", &string); |
| if (!rc) { |
| if (!strcmp(string, "reg_read")) { |
| ctrl->status_mode = SPI_ESD_REG; |
| ctrl->check_status = |
| mdss_spi_reg_status_check; |
| } else if (!strcmp(string, "send_init_command")) { |
| ctrl->status_mode = SPI_SEND_PANEL_COMMAND; |
| ctrl->check_status = |
| mdss_send_panel_cmd_for_esd; |
| return; |
| } else { |
| pr_err("No valid panel-status-check-mode string\n"); |
| pinfo->esd_check_enabled = false; |
| return; |
| } |
| } |
| |
| rc = of_property_read_u8(np, "qcom,mdss-spi-panel-status-reg", |
| &ctrl->panel_status_reg); |
| if (rc) { |
| pr_warn("%s:%d, Read status reg failed, disable ESD check\n", |
| __func__, __LINE__); |
| pinfo->esd_check_enabled = false; |
| return; |
| } |
| |
| rc = of_property_read_u32(np, "qcom,mdss-spi-panel-status-read-length", |
| &tmp); |
| if (rc) { |
| pr_warn("%s:%d, Read reg length failed, disable ESD check\n", |
| __func__, __LINE__); |
| pinfo->esd_check_enabled = false; |
| return; |
| } |
| |
| ctrl->status_cmds_rlen = (!rc ? tmp : 1); |
| |
| ctrl->exp_status_value = kzalloc(sizeof(u8) * |
| (ctrl->status_cmds_rlen + 1), GFP_KERNEL); |
| ctrl->act_status_value = kzalloc(sizeof(u8) * |
| (ctrl->status_cmds_rlen + 1), GFP_KERNEL); |
| |
| if (!ctrl->exp_status_value || !ctrl->act_status_value) { |
| pr_err("%s: Error allocating memory for status buffer\n", |
| __func__); |
| pinfo->esd_check_enabled = false; |
| return; |
| } |
| |
| data = of_find_property(np, "qcom,mdss-spi-panel-status-value", &tmp); |
| tmp /= sizeof(u8); |
| if (!data || (tmp != ctrl->status_cmds_rlen)) { |
| pr_err("%s: Panel status values not found\n", __func__); |
| pinfo->esd_check_enabled = false; |
| memset(ctrl->exp_status_value, 0, ctrl->status_cmds_rlen); |
| } else { |
| rc = of_property_read_u8_array(np, |
| "qcom,mdss-spi-panel-status-value", |
| ctrl->exp_status_value, tmp); |
| if (rc) { |
| pr_err("%s: Error reading panel status values\n", |
| __func__); |
| pinfo->esd_check_enabled = false; |
| memset(ctrl->exp_status_value, 0, |
| ctrl->status_cmds_rlen); |
| } |
| } |
| } |
| |
| static int mdss_spi_panel_parse_dt(struct device_node *np, |
| struct spi_panel_data *ctrl_pdata) |
| { |
| u32 tmp; |
| int rc; |
| const char *data; |
| struct mdss_panel_info *pinfo = &(ctrl_pdata->panel_data.panel_info); |
| |
| pinfo->cont_splash_enabled = of_property_read_bool(np, |
| "qcom,cont-splash-enabled"); |
| |
| rc = of_property_read_u32(np, "qcom,mdss-spi-panel-width", &tmp); |
| if (rc) { |
| pr_err("%s: panel width not specified\n", __func__); |
| return -EINVAL; |
| } |
| pinfo->xres = (!rc ? tmp : 240); |
| |
| rc = of_property_read_u32(np, "qcom,mdss-spi-panel-height", &tmp); |
| if (rc) { |
| pr_err("%s:panel height not specified\n", __func__); |
| return -EINVAL; |
| } |
| pinfo->yres = (!rc ? tmp : 320); |
| |
| rc = of_property_read_u32(np, |
| "qcom,mdss-pan-physical-width-dimension", &tmp); |
| pinfo->physical_width = (!rc ? tmp : 0); |
| rc = of_property_read_u32(np, |
| "qcom,mdss-pan-physical-height-dimension", &tmp); |
| pinfo->physical_height = (!rc ? tmp : 0); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-panel-framerate", &tmp); |
| pinfo->spi.frame_rate = (!rc ? tmp : 30); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-h-front-porch", &tmp); |
| pinfo->lcdc.h_front_porch = (!rc ? tmp : 6); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-h-back-porch", &tmp); |
| pinfo->lcdc.h_back_porch = (!rc ? tmp : 6); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-h-pulse-width", &tmp); |
| pinfo->lcdc.h_pulse_width = (!rc ? tmp : 2); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-h-sync-skew", &tmp); |
| pinfo->lcdc.hsync_skew = (!rc ? tmp : 0); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-v-back-porch", &tmp); |
| pinfo->lcdc.v_back_porch = (!rc ? tmp : 6); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-v-front-porch", &tmp); |
| pinfo->lcdc.v_front_porch = (!rc ? tmp : 6); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-v-pulse-width", &tmp); |
| pinfo->lcdc.v_pulse_width = (!rc ? tmp : 2); |
| |
| |
| rc = of_property_read_u32(np, "qcom,mdss-spi-bpp", &tmp); |
| if (rc) { |
| pr_err("%s: bpp not specified\n", __func__); |
| return -EINVAL; |
| } |
| pinfo->bpp = (!rc ? tmp : 16); |
| |
| pinfo->pdest = DISPLAY_1; |
| |
| ctrl_pdata->bklt_ctrl = SPI_UNKNOWN_CTRL; |
| data = of_get_property(np, "qcom,mdss-spi-bl-pmic-control-type", NULL); |
| if (data) { |
| if (!strcmp(data, "bl_ctrl_wled")) { |
| led_trigger_register_simple("bkl-trigger", |
| &bl_led_trigger); |
| pr_debug("%s: SUCCESS-> WLED TRIGGER register\n", |
| __func__); |
| ctrl_pdata->bklt_ctrl = SPI_BL_WLED; |
| } else if (!strcmp(data, "bl_gpio_pulse")) { |
| led_trigger_register_simple("gpio-bklt-trigger", |
| &bl_led_trigger); |
| pr_debug("%s: SUCCESS-> GPIO PULSE TRIGGER register\n", |
| __func__); |
| ctrl_pdata->bklt_ctrl = SPI_BL_WLED; |
| } else if (!strcmp(data, "bl_ctrl_pwm")) { |
| ctrl_pdata->bklt_ctrl = SPI_BL_PWM; |
| ctrl_pdata->pwm_pmi = of_property_read_bool(np, |
| "qcom,mdss-spi-bl-pwm-pmi"); |
| rc = of_property_read_u32(np, |
| "qcom,mdss-spi-bl-pmic-pwm-frequency", &tmp); |
| if (rc) { |
| pr_err("%s: Error, panel pwm_period\n", |
| __func__); |
| return -EINVAL; |
| } |
| ctrl_pdata->pwm_period = tmp; |
| if (ctrl_pdata->pwm_pmi) { |
| ctrl_pdata->pwm_bl = of_pwm_get(np, NULL); |
| if (IS_ERR(ctrl_pdata->pwm_bl)) { |
| pr_err("%s: Error, pwm device\n", |
| __func__); |
| ctrl_pdata->pwm_bl = NULL; |
| return -EINVAL; |
| } |
| } else { |
| rc = of_property_read_u32(np, |
| "qcom,mdss-spi-bl-pmic-bank-select", |
| &tmp); |
| if (rc) { |
| pr_err("%s: Error, lpg channel\n", |
| __func__); |
| return -EINVAL; |
| } |
| ctrl_pdata->pwm_lpg_chan = tmp; |
| tmp = of_get_named_gpio(np, |
| "qcom,mdss-spi-pwm-gpio", 0); |
| ctrl_pdata->pwm_pmic_gpio = tmp; |
| pr_debug("%s: Configured PWM bklt ctrl\n", |
| __func__); |
| } |
| } |
| } |
| rc = of_property_read_u32(np, "qcom,mdss-brightness-max-level", &tmp); |
| pinfo->brightness_max = (!rc ? tmp : MDSS_MAX_BL_BRIGHTNESS); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-bl-min-level", &tmp); |
| pinfo->bl_min = (!rc ? tmp : 0); |
| rc = of_property_read_u32(np, "qcom,mdss-spi-bl-max-level", &tmp); |
| pinfo->bl_max = (!rc ? tmp : 255); |
| ctrl_pdata->bklt_max = pinfo->bl_max; |
| |
| |
| mdss_spi_panel_parse_reset_seq(np, pinfo->rst_seq, |
| &(pinfo->rst_seq_len), |
| "qcom,mdss-spi-reset-sequence"); |
| |
| mdss_spi_panel_parse_cmds(np, &ctrl_pdata->on_cmds, |
| "qcom,mdss-spi-on-command"); |
| |
| mdss_spi_panel_parse_cmds(np, &ctrl_pdata->off_cmds, |
| "qcom,mdss-spi-off-command"); |
| |
| mdss_spi_parse_esd_params(np, ctrl_pdata); |
| |
| |
| return 0; |
| } |
| |
| static void mdss_spi_panel_pwm_cfg(struct spi_panel_data *ctrl) |
| { |
| if (ctrl->pwm_pmi) |
| return; |
| |
| ctrl->pwm_bl = pwm_request(ctrl->pwm_lpg_chan, "lcd-bklt"); |
| if (ctrl->pwm_bl == NULL || IS_ERR(ctrl->pwm_bl)) { |
| pr_err("%s: Error: lpg_chan=%d pwm request failed", |
| __func__, ctrl->pwm_lpg_chan); |
| } |
| ctrl->pwm_enabled = 0; |
| } |
| |
| static void mdss_spi_panel_bklt_pwm(struct spi_panel_data *ctrl, int level) |
| { |
| int ret; |
| u32 duty; |
| u32 period_ns; |
| |
| if (ctrl->pwm_bl == NULL) { |
| pr_err("%s: no PWM\n", __func__); |
| return; |
| } |
| |
| if (level == 0) { |
| if (ctrl->pwm_enabled) { |
| ret = pwm_config(ctrl->pwm_bl, 0, |
| ctrl->pwm_period * NSEC_PER_USEC); |
| if (ret) |
| pr_err("%s: pwm_config() failed err=%d.\n", |
| __func__, ret); |
| pwm_disable(ctrl->pwm_bl); |
| } |
| ctrl->pwm_enabled = 0; |
| return; |
| } |
| |
| duty = level * ctrl->pwm_period; |
| duty /= ctrl->bklt_max; |
| |
| pr_debug("%s: bklt_ctrl=%d pwm_period=%d pwm_gpio=%d pwm_lpg_chan=%d\n", |
| __func__, ctrl->bklt_ctrl, ctrl->pwm_period, |
| ctrl->pwm_pmic_gpio, ctrl->pwm_lpg_chan); |
| |
| if (ctrl->pwm_period >= USEC_PER_SEC) { |
| ret = pwm_config_us(ctrl->pwm_bl, duty, ctrl->pwm_period); |
| if (ret) { |
| pr_err("%s: pwm_config_us() failed err=%d\n", |
| __func__, ret); |
| return; |
| } |
| } else { |
| period_ns = ctrl->pwm_period * NSEC_PER_USEC; |
| ret = pwm_config(ctrl->pwm_bl, |
| level * period_ns / ctrl->bklt_max, |
| period_ns); |
| if (ret) { |
| pr_err("%s: pwm_config() failed err=%d\n", |
| __func__, ret); |
| return; |
| } |
| } |
| |
| if (!ctrl->pwm_enabled) { |
| ret = pwm_enable(ctrl->pwm_bl); |
| if (ret) |
| pr_err("%s: pwm_enable() failed err=%d\n", __func__, |
| ret); |
| ctrl->pwm_enabled = 1; |
| } |
| } |
| |
| static void mdss_spi_panel_bl_ctrl(struct mdss_panel_data *pdata, |
| u32 bl_level) |
| { |
| /* Allow panel backlight update if secure UI is enabled */ |
| if (bl_level && !mdp3_res->secure_update_bl) { |
| mdp3_res->bklt_level = bl_level; |
| mdp3_res->bklt_update = true; |
| } else { |
| mdss_spi_panel_bl_ctrl_update(pdata, bl_level); |
| } |
| } |
| |
| #if defined(CONFIG_FB_MSM_MDSS_SPI_PANEL) && defined(CONFIG_SPI_QUP) |
| void mdss_spi_panel_bl_ctrl_update(struct mdss_panel_data *pdata, |
| u32 bl_level) |
| { |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| if ((bl_level < pdata->panel_info.bl_min) && (bl_level != 0)) |
| bl_level = pdata->panel_info.bl_min; |
| |
| switch (ctrl_pdata->bklt_ctrl) { |
| case SPI_BL_WLED: |
| led_trigger_event(bl_led_trigger, bl_level); |
| break; |
| case SPI_BL_PWM: |
| mdss_spi_panel_bklt_pwm(ctrl_pdata, bl_level); |
| break; |
| default: |
| pr_err("%s: Unknown bl_ctrl configuration %d\n", |
| __func__, ctrl_pdata->bklt_ctrl); |
| break; |
| } |
| } |
| #endif |
| |
| static int mdss_spi_panel_init(struct device_node *node, |
| struct spi_panel_data *ctrl_pdata, |
| bool cmd_cfg_cont_splash) |
| { |
| int rc = 0; |
| static const char *panel_name; |
| struct mdss_panel_info *pinfo; |
| |
| if (!node || !ctrl_pdata) { |
| pr_err("%s: Invalid arguments\n", __func__); |
| return -ENODEV; |
| } |
| |
| pinfo = &ctrl_pdata->panel_data.panel_info; |
| |
| pr_debug("%s:%d\n", __func__, __LINE__); |
| pinfo->panel_name[0] = '\0'; |
| panel_name = of_get_property(node, "qcom,mdss-spi-panel-name", NULL); |
| if (!panel_name) { |
| pr_info("%s:%d, Panel name not specified\n", |
| __func__, __LINE__); |
| } else { |
| pr_debug("%s: Panel Name = %s\n", __func__, panel_name); |
| strlcpy(&pinfo->panel_name[0], panel_name, MDSS_MAX_PANEL_LEN); |
| } |
| rc = mdss_spi_panel_parse_dt(node, ctrl_pdata); |
| if (rc) { |
| pr_err("%s:%d panel dt parse failed\n", __func__, __LINE__); |
| return rc; |
| } |
| |
| ctrl_pdata->byte_pre_frame = pinfo->xres * pinfo->yres * pinfo->bpp/8; |
| |
| ctrl_pdata->tx_buf = kmalloc(ctrl_pdata->byte_pre_frame, GFP_KERNEL); |
| |
| if (!cmd_cfg_cont_splash) |
| pinfo->cont_splash_enabled = false; |
| |
| pr_info("%s: Continuous splash %s\n", __func__, |
| pinfo->cont_splash_enabled ? "enabled" : "disabled"); |
| |
| pinfo->dynamic_switch_pending = false; |
| pinfo->is_lpm_mode = false; |
| pinfo->esd_rdy = false; |
| |
| ctrl_pdata->on = mdss_spi_panel_on; |
| ctrl_pdata->off = mdss_spi_panel_off; |
| ctrl_pdata->panel_data.set_backlight = mdss_spi_panel_bl_ctrl; |
| |
| return 0; |
| } |
| |
| static int mdss_spi_get_panel_cfg(char *panel_cfg, |
| struct spi_panel_data *ctrl_pdata) |
| { |
| int rc; |
| struct mdss_panel_cfg *pan_cfg = NULL; |
| |
| if (!ctrl_pdata) |
| return MDSS_PANEL_INTF_INVALID; |
| |
| pan_cfg = ctrl_pdata->mdss_util->panel_intf_type(MDSS_PANEL_INTF_SPI); |
| if (IS_ERR(pan_cfg)) { |
| return PTR_ERR(pan_cfg); |
| } else if (!pan_cfg) { |
| panel_cfg[0] = 0; |
| return 0; |
| } |
| |
| pr_debug("%s:%d: cfg:[%s]\n", __func__, __LINE__, |
| pan_cfg->arg_cfg); |
| ctrl_pdata->panel_data.panel_info.is_prim_panel = true; |
| rc = strlcpy(panel_cfg, pan_cfg->arg_cfg, |
| sizeof(pan_cfg->arg_cfg)); |
| return rc; |
| } |
| |
| static int mdss_spi_panel_regulator_init(struct platform_device *pdev) |
| { |
| int rc = 0; |
| |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (!pdev) { |
| pr_err("%s: invalid input\n", __func__); |
| return -EINVAL; |
| } |
| |
| ctrl_pdata = platform_get_drvdata(pdev); |
| if (!ctrl_pdata) { |
| pr_err("%s: invalid driver data\n", __func__); |
| return -EINVAL; |
| } |
| |
| rc = msm_mdss_config_vreg(&pdev->dev, |
| ctrl_pdata->panel_power_data.vreg_config, |
| ctrl_pdata->panel_power_data.num_vreg, 1); |
| if (rc) |
| pr_err("%s: failed to init vregs for %s\n", |
| __func__, "PANEL_PM"); |
| |
| return rc; |
| |
| } |
| |
| static irqreturn_t spi_panel_te_handler(int irq, void *data) |
| { |
| struct spi_panel_data *ctrl_pdata = (struct spi_panel_data *)data; |
| static int count = 2; |
| |
| if (!ctrl_pdata) { |
| pr_err("%s: SPI display not available\n", __func__); |
| return IRQ_HANDLED; |
| } |
| complete(&ctrl_pdata->spi_panel_te); |
| |
| if (ctrl_pdata->vsync_client.handler && !(--count)) { |
| ctrl_pdata->vsync_client.handler(ctrl_pdata->vsync_client.arg); |
| count = 2; |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| void mdp3_spi_vsync_enable(struct mdss_panel_data *pdata, |
| struct mdp3_notification *vsync_client) |
| { |
| int updated = 0; |
| struct spi_panel_data *ctrl_pdata = NULL; |
| |
| if (pdata == NULL) { |
| pr_err("%s: Invalid input data\n", __func__); |
| return; |
| } |
| |
| ctrl_pdata = container_of(pdata, struct spi_panel_data, |
| panel_data); |
| |
| if (vsync_client) { |
| if (ctrl_pdata->vsync_client.handler != vsync_client->handler) { |
| ctrl_pdata->vsync_client = *vsync_client; |
| updated = 1; |
| } |
| } else { |
| if (ctrl_pdata->vsync_client.handler) { |
| ctrl_pdata->vsync_client.handler = NULL; |
| ctrl_pdata->vsync_client.arg = NULL; |
| updated = 1; |
| } |
| } |
| |
| if (updated) { |
| if (vsync_client && vsync_client->handler) |
| enable_spi_panel_te_irq(ctrl_pdata, true); |
| else |
| enable_spi_panel_te_irq(ctrl_pdata, false); |
| } |
| } |
| |
| static struct device_node *mdss_spi_pref_prim_panel( |
| struct platform_device *pdev) |
| { |
| struct device_node *spi_pan_node = NULL; |
| |
| pr_debug("%s:%d: Select primary panel from dt\n", |
| __func__, __LINE__); |
| spi_pan_node = of_parse_phandle(pdev->dev.of_node, |
| "qcom,spi-pref-prim-pan", 0); |
| if (!spi_pan_node) |
| pr_err("%s:can't find panel phandle\n", __func__); |
| |
| return spi_pan_node; |
| } |
| |
| static int spi_panel_device_register(struct device_node *pan_node, |
| struct spi_panel_data *ctrl_pdata) |
| { |
| int rc; |
| struct mdss_panel_info *pinfo = &(ctrl_pdata->panel_data.panel_info); |
| struct device_node *spi_ctrl_np = NULL; |
| struct platform_device *ctrl_pdev = NULL; |
| |
| pinfo->type = SPI_PANEL; |
| |
| spi_ctrl_np = of_parse_phandle(pan_node, |
| "qcom,mdss-spi-panel-controller", 0); |
| if (!spi_ctrl_np) { |
| pr_err("%s: SPI controller node not initialized\n", __func__); |
| return -EPROBE_DEFER; |
| } |
| |
| ctrl_pdev = of_find_device_by_node(spi_ctrl_np); |
| if (!ctrl_pdev) { |
| of_node_put(spi_ctrl_np); |
| pr_err("%s: SPI controller node not find\n", __func__); |
| return -EPROBE_DEFER; |
| } |
| |
| rc = mdss_spi_panel_regulator_init(ctrl_pdev); |
| if (rc) { |
| pr_err("%s: failed to init regulator, rc=%d\n", |
| __func__, rc); |
| return rc; |
| } |
| |
| pinfo->panel_max_fps = mdss_panel_get_framerate(pinfo, |
| FPS_RESOLUTION_HZ); |
| pinfo->panel_max_vtotal = mdss_panel_get_vtotal(pinfo); |
| |
| ctrl_pdata->disp_te_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| "qcom,platform-te-gpio", 0); |
| if (!gpio_is_valid(ctrl_pdata->disp_te_gpio)) |
| pr_err("%s:%d, TE gpio not specified\n", |
| __func__, __LINE__); |
| |
| ctrl_pdata->disp_dc_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| "qcom,platform-spi-dc-gpio", 0); |
| if (!gpio_is_valid(ctrl_pdata->disp_dc_gpio)) |
| pr_err("%s:%d, SPI DC gpio not specified\n", |
| __func__, __LINE__); |
| |
| ctrl_pdata->rst_gpio = of_get_named_gpio(ctrl_pdev->dev.of_node, |
| "qcom,platform-reset-gpio", 0); |
| if (!gpio_is_valid(ctrl_pdata->rst_gpio)) |
| pr_err("%s:%d, reset gpio not specified\n", |
| __func__, __LINE__); |
| |
| ctrl_pdata->panel_data.event_handler = mdss_spi_panel_event_handler; |
| |
| if (ctrl_pdata->bklt_ctrl == SPI_BL_PWM) |
| mdss_spi_panel_pwm_cfg(ctrl_pdata); |
| |
| ctrl_pdata->ctrl_state = CTRL_STATE_UNKNOWN; |
| |
| if (pinfo->cont_splash_enabled) { |
| rc = mdss_spi_panel_power_ctrl(&(ctrl_pdata->panel_data), |
| MDSS_PANEL_POWER_ON); |
| if (rc) { |
| pr_err("%s: Panel power on failed\n", __func__); |
| return rc; |
| } |
| if (ctrl_pdata->bklt_ctrl == SPI_BL_PWM) |
| ctrl_pdata->pwm_enabled = 1; |
| pinfo->blank_state = MDSS_PANEL_BLANK_UNBLANK; |
| ctrl_pdata->ctrl_state |= |
| (CTRL_STATE_PANEL_INIT | CTRL_STATE_MDP_ACTIVE); |
| } else { |
| pinfo->panel_power_state = MDSS_PANEL_POWER_OFF; |
| } |
| |
| rc = mdss_register_panel(ctrl_pdev, &(ctrl_pdata->panel_data)); |
| if (rc) { |
| pr_err("%s: unable to register SPI panel\n", __func__); |
| return rc; |
| } |
| |
| pr_debug("%s: Panel data initialized\n", __func__); |
| return 0; |
| } |
| |
| |
| /** |
| * mdss_spi_find_panel_of_node(): find device node of spi panel |
| * @pdev: platform_device of the spi ctrl node |
| * @panel_cfg: string containing intf specific config data |
| * |
| * Function finds the panel device node using the interface |
| * specific configuration data. This configuration data is |
| * could be derived from the result of bootloader's GCDB |
| * panel detection mechanism. If such config data doesn't |
| * exist then this panel returns the default panel configured |
| * in the device tree. |
| * |
| * returns pointer to panel node on success, NULL on error. |
| */ |
| static struct device_node *mdss_spi_find_panel_of_node( |
| struct platform_device *pdev, char *panel_cfg) |
| { |
| int len, i; |
| int ctrl_id = pdev->id - 1; |
| char panel_name[MDSS_MAX_PANEL_LEN] = ""; |
| char ctrl_id_stream[3] = "0:"; |
| char *stream = NULL, *pan = NULL; |
| struct device_node *spi_pan_node = NULL, *mdss_node = NULL; |
| |
| len = strlen(panel_cfg); |
| if (!len) { |
| /* no panel cfg chg, parse dt */ |
| pr_err("%s:%d: no cmd line cfg present\n", |
| __func__, __LINE__); |
| goto end; |
| } else { |
| if (ctrl_id == 1) |
| strlcpy(ctrl_id_stream, "1:", 3); |
| |
| stream = strnstr(panel_cfg, ctrl_id_stream, len); |
| if (!stream) { |
| pr_err("controller config is not present\n"); |
| goto end; |
| } |
| stream += 2; |
| |
| pan = strnchr(stream, strlen(stream), ':'); |
| if (!pan) { |
| strlcpy(panel_name, stream, MDSS_MAX_PANEL_LEN); |
| } else { |
| for (i = 0; (stream + i) < pan; i++) |
| panel_name[i] = *(stream + i); |
| panel_name[i] = 0; |
| } |
| |
| pr_debug("%s:%d:%s:%s\n", __func__, __LINE__, |
| panel_cfg, panel_name); |
| |
| mdss_node = of_parse_phandle(pdev->dev.of_node, |
| "qcom,mdss-mdp", 0); |
| if (!mdss_node) { |
| pr_err("%s: %d: mdss_node null\n", |
| __func__, __LINE__); |
| return NULL; |
| } |
| |
| spi_pan_node = of_find_node_by_name(mdss_node, |
| panel_name); |
| if (!spi_pan_node) { |
| pr_err("%s: invalid pan node, selecting prim panel\n", |
| __func__); |
| goto end; |
| } |
| return spi_pan_node; |
| } |
| end: |
| if (strcmp(panel_name, NONE_PANEL)) |
| spi_pan_node = mdss_spi_pref_prim_panel(pdev); |
| of_node_put(mdss_node); |
| return spi_pan_node; |
| } |
| |
| |
| static int mdss_spi_panel_probe(struct platform_device *pdev) |
| { |
| int rc = 0; |
| struct spi_panel_data *ctrl_pdata; |
| struct mdss_panel_cfg *pan_cfg = NULL; |
| struct device_node *spi_pan_node = NULL; |
| bool cmd_cfg_cont_splash = true; |
| char panel_cfg[MDSS_MAX_PANEL_LEN]; |
| struct mdss_util_intf *util; |
| const char *ctrl_name; |
| |
| util = mdss_get_util_intf(); |
| if (util == NULL) { |
| pr_err("Failed to get mdss utility functions\n"); |
| return -ENODEV; |
| } |
| |
| if (!util->mdp_probe_done) { |
| pr_err("%s: MDP not probed yet\n", __func__); |
| return -EPROBE_DEFER; |
| } |
| |
| if (!pdev->dev.of_node) { |
| pr_err("SPI driver only supports device tree probe\n"); |
| return -ENOTSUPP; |
| } |
| |
| pan_cfg = util->panel_intf_type(MDSS_PANEL_INTF_DSI); |
| if (IS_ERR(pan_cfg)) { |
| pr_err("%s: return MDSS_PANEL_INTF_DSI\n", __func__); |
| return PTR_ERR(pan_cfg); |
| } else if (pan_cfg) { |
| pr_err("%s: DSI is primary\n", __func__); |
| return -ENODEV; |
| } |
| |
| ctrl_pdata = platform_get_drvdata(pdev); |
| if (!ctrl_pdata) { |
| ctrl_pdata = devm_kzalloc(&pdev->dev, |
| sizeof(struct spi_panel_data), |
| GFP_KERNEL); |
| if (!ctrl_pdata) { |
| pr_err("%s: FAILED: cannot alloc spi panel\n", |
| __func__); |
| rc = -ENOMEM; |
| goto error_no_mem; |
| } |
| platform_set_drvdata(pdev, ctrl_pdata); |
| } |
| |
| ctrl_pdata->mdss_util = util; |
| |
| ctrl_name = of_get_property(pdev->dev.of_node, "label", NULL); |
| if (!ctrl_name) |
| pr_info("%s:%d, Ctrl name not specified\n", |
| __func__, __LINE__); |
| else |
| pr_debug("%s: Ctrl name = %s\n", |
| __func__, ctrl_name); |
| |
| |
| rc = of_platform_populate(pdev->dev.of_node, |
| NULL, NULL, &pdev->dev); |
| if (rc) { |
| dev_err(&pdev->dev, |
| "%s: failed to add child nodes, rc=%d\n", |
| __func__, rc); |
| goto error_no_mem; |
| } |
| |
| rc = mdss_spi_panel_pinctrl_init(pdev); |
| if (rc) |
| pr_warn("%s: failed to get pin resources\n", __func__); |
| |
| rc = mdss_spi_get_panel_vreg_data(&pdev->dev, |
| &ctrl_pdata->panel_power_data); |
| if (rc) { |
| dev_err(&pdev->dev, |
| "%s: failed to get panel vreg data, rc=%d\n", |
| __func__, rc); |
| goto error_vreg; |
| } |
| |
| /* SPI panels can be different between controllers */ |
| rc = mdss_spi_get_panel_cfg(panel_cfg, ctrl_pdata); |
| if (!rc) |
| /* spi panel cfg not present */ |
| pr_warn("%s:%d:spi specific cfg not present\n", |
| __func__, __LINE__); |
| |
| /* find panel device node */ |
| spi_pan_node = mdss_spi_find_panel_of_node(pdev, panel_cfg); |
| if (!spi_pan_node) { |
| pr_err("%s: can't find panel node %s\n", __func__, panel_cfg); |
| goto error_pan_node; |
| } |
| |
| cmd_cfg_cont_splash = true; |
| |
| rc = mdss_spi_panel_init(spi_pan_node, ctrl_pdata, cmd_cfg_cont_splash); |
| if (rc) { |
| pr_err("%s: spi panel init failed\n", __func__); |
| goto error_pan_node; |
| } |
| |
| rc = spi_panel_device_register(spi_pan_node, ctrl_pdata); |
| if (rc) { |
| pr_err("%s: spi panel dev reg failed\n", __func__); |
| goto error_pan_node; |
| } |
| |
| ctrl_pdata->panel_data.event_handler = mdss_spi_panel_event_handler; |
| |
| |
| init_completion(&ctrl_pdata->spi_panel_te); |
| mutex_init(&ctrl_pdata->spi_tx_mutex); |
| |
| rc = devm_request_irq(&pdev->dev, |
| gpio_to_irq(ctrl_pdata->disp_te_gpio), |
| spi_panel_te_handler, IRQF_TRIGGER_RISING, |
| "TE_GPIO", ctrl_pdata); |
| if (rc) { |
| pr_err("TE request_irq failed.\n"); |
| return rc; |
| } |
| |
| pr_debug("%s: spi panel initialized\n", __func__); |
| return 0; |
| |
| error_pan_node: |
| of_node_put(spi_pan_node); |
| error_vreg: |
| mdss_spi_put_dt_vreg_data(&pdev->dev, |
| &ctrl_pdata->panel_power_data); |
| error_no_mem: |
| devm_kfree(&pdev->dev, ctrl_pdata); |
| return rc; |
| } |
| |
| |
| static const struct of_device_id mdss_spi_panel_match[] = { |
| { .compatible = "qcom,mdss-spi-display" }, |
| {}, |
| }; |
| |
| static struct platform_driver this_driver = { |
| .probe = mdss_spi_panel_probe, |
| .driver = { |
| .name = "spi_panel", |
| .owner = THIS_MODULE, |
| .of_match_table = mdss_spi_panel_match, |
| }, |
| }; |
| |
| static int __init mdss_spi_display_init(void) |
| { |
| int ret; |
| |
| ret = platform_driver_register(&this_driver); |
| return 0; |
| } |
| module_init(mdss_spi_display_init); |
| |
| MODULE_DEVICE_TABLE(of, mdss_spi_panel_match); |
| MODULE_LICENSE("GPL v2"); |