target/msm8916/target_display.c

/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name of The Linux Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <debug.h>
#include <smem.h>
#include <err.h>
#include <msm_panel.h>
#include <mipi_dsi.h>
#include <pm8x41.h>
#include <pm8x41_wled.h>
#include <board.h>
#include <mdp5.h>
#include <scm.h>
#include <platform/gpio.h>
#include <platform/iomap.h>
#include <target/display.h>
#include <i2c_qup.h>
#include <blsp_qup.h>

#include "include/panel.h"
#include "include/display_resource.h"

#define VCO_DELAY_USEC 1000
#define GPIO_STATE_LOW 0
#define GPIO_STATE_HIGH 2
#define RESET_GPIO_SEQ_LEN 3
#define PWM_DUTY_US 13
#define PWM_PERIOD_US 27

static void mdss_dsi_uniphy_pll_sw_reset_8916(uint32_t pll_base)
{
	writel(0x01, pll_base + 0x0068); /* PLL TEST CFG */
	mdelay(1);
	writel(0x00, pll_base + 0x0068); /* PLL TEST CFG */
	mdelay(1);
}

static uint32_t dsi_pll_enable_seq_8916(uint32_t pll_base)
{
	uint32_t pll_locked = 0;

	writel(0x01, pll_base + 0x0068); /* PLL TEST CFG */
	udelay(1);
	writel(0x00, pll_base + 0x0068); /* PLL TEST CFG */

	/*
	 * Add hardware recommended delays between register writes for
	 * the updates to take effect. These delays are necessary for the
	 * PLL to successfully lock
	 */
	writel(0x34, pll_base + 0x0070); /* CAL CFG1*/
	udelay(1);
	writel(0x01, pll_base + 0x0020); /* GLB CFG */
	udelay(1);
	writel(0x05, pll_base + 0x0020); /* GLB CFG */
	udelay(1);
	writel(0x0f, pll_base + 0x0020); /* GLB CFG */
	udelay(1);

	writel(0x04, pll_base + 0x0064); /* LKDetect CFG2 */
	udelay(1);
	writel(0x05, pll_base + 0x0064); /* LKDetect CFG2 */
	udelay(512);
	pll_locked = readl(pll_base + 0x00c0) & 0x01;

	return pll_locked;
}

int target_backlight_ctrl(struct backlight *bl, uint8_t enable)
{
	struct pm8x41_mpp mpp;
	int rc;

	if (bl->bl_interface_type == BL_DCS)
		return 0;

	mpp.base = PM8x41_MMP4_BASE;
	mpp.vin = MPP_VIN0;
	if (enable) {
		pm_pwm_enable(false);
		rc = pm_pwm_config(PWM_DUTY_US, PWM_PERIOD_US);
		if (rc < 0)
			mpp.mode = MPP_HIGH;
		else {
			mpp.mode = MPP_DTEST1;
			pm_pwm_enable(true);
		}
		pm8x41_config_output_mpp(&mpp);
		pm8x41_enable_mpp(&mpp, MPP_ENABLE);
	} else {
		pm_pwm_enable(false);
		pm8x41_enable_mpp(&mpp, MPP_DISABLE);
	}
	mdelay(20);
	return 0;
}

int target_panel_clock(uint8_t enable, struct msm_panel_info *pinfo)
{
	int32_t ret = 0;
	struct mdss_dsi_pll_config *pll_data;
	dprintf(SPEW, "target_panel_clock\n");

	pll_data = pinfo->mipi.dsi_pll_config;
	pll_data->vco_delay = VCO_DELAY_USEC;

	if (enable) {
		mdp_gdsc_ctrl(enable);
		mdss_bus_clocks_enable();
		mdp_clock_enable();
		ret = restore_secure_cfg(SECURE_DEVICE_MDSS);
		if (ret) {
			dprintf(CRITICAL,
				"%s: Failed to restore MDP security configs",
				__func__);
			mdp_clock_disable();
			mdss_bus_clocks_disable();
			mdp_gdsc_ctrl(0);
			return ret;
		}
		mdss_dsi_uniphy_pll_sw_reset_8916(DSI0_PLL_BASE);
		mdss_dsi_auto_pll_config(DSI0_PLL_BASE,
						MIPI_DSI0_BASE, pll_data);
		if (!dsi_pll_enable_seq_8916(DSI0_PLL_BASE))
			dprintf(CRITICAL, "Not able to enable the pll\n");
		gcc_dsi_clocks_enable(pinfo->mipi.dual_dsi, pll_data->pclk_m,
				pll_data->pclk_n,
				pll_data->pclk_d);
	} else if(!target_cont_splash_screen()) {
		gcc_dsi_clocks_disable(pinfo->mipi.dual_dsi);
		mdp_clock_disable();
		mdss_bus_clocks_disable();
		mdp_gdsc_ctrl(enable);
	}

	return 0;
}

#define QRD_LCD_I2C_ADDRESS		0x3E
#define QRD_LCD_VPOS_ADDRESS		0x00
#define QRD_LCD_VNEG_ADDRESS		0x01
#define QRD_LCD_DIS_ADDRESS		0x03
#define QRD_LCD_CONTROL_ADDRESS		0xFF

static struct qup_i2c_dev  *i2c_dev;
static int qrd_lcd_i2c_read(uint8_t addr)
{
	int ret = 0;
	/* Create a i2c_msg buffer, that is used to put the controller into read
	   mode and then to read some data. */
	struct i2c_msg msg_buf[] = {
		{QRD_LCD_I2C_ADDRESS, I2C_M_WR, 1, &addr},
		{QRD_LCD_I2C_ADDRESS, I2C_M_RD, 1, &ret}
	};

	ret = qup_i2c_xfer(i2c_dev, msg_buf, 2);
	if(ret < 0) {
		dprintf(CRITICAL, "qup_i2c_xfer error %d\n", ret);
		return ret;
	}
	return 0;
}

static int qrd_lcd_i2c_write(uint8_t addr, uint8_t val)
{
	int ret = 0;
	uint8_t data_buf[] = { addr, val };

	/* Create a i2c_msg buffer, that is used to put the controller into write
	   mode and then to write some data. */
	struct i2c_msg msg_buf[] = { {QRD_LCD_I2C_ADDRESS,
				      I2C_M_WR, 2, data_buf}
	};

	ret = qup_i2c_xfer(i2c_dev, msg_buf, 1);
	if(ret < 0) {
		dprintf(CRITICAL, "qup_i2c_xfer error %d\n", ret);
		return ret;
	}
	return 0;
}

static int target_panel_reset_skuh(uint8_t enable)
{
	int ret = NO_ERROR;
	if (enable) {
		/* for tps65132 ENP pin */
		gpio_tlmm_config(enp_gpio.pin_id, 0,
			enp_gpio.pin_direction, enp_gpio.pin_pull,
			enp_gpio.pin_strength,
			enp_gpio.pin_state);
		gpio_set_dir(enp_gpio.pin_id, 2);

		/* for tps65132 ENN pin*/
		gpio_tlmm_config(enn_gpio.pin_id, 0,
			enn_gpio.pin_direction, enn_gpio.pin_pull,
			enn_gpio.pin_strength,
			enn_gpio.pin_state);
		gpio_set_dir(enn_gpio.pin_id, 2);

		i2c_dev = qup_blsp_i2c_init(BLSP_ID_1, QUP_ID_1, 100000, 19200000);
		if(!i2c_dev) {
			dprintf(CRITICAL, "qup_blsp_i2c_init failed \n");
			ASSERT(0);
		}

		ret = qrd_lcd_i2c_write(QRD_LCD_VPOS_ADDRESS, 0x0E); /* 5.4V */
		if (ret) {
			dprintf(CRITICAL, "VPOS Register: I2C Write failure\n");
		}

		ret = qrd_lcd_i2c_write(QRD_LCD_VNEG_ADDRESS, 0x0E); /* -5.4V */
		if (ret) {
			dprintf(CRITICAL, "VNEG Register: I2C write failure\n");
		}

		ret = qrd_lcd_i2c_write(QRD_LCD_DIS_ADDRESS, 0x0F);
		if (ret) {
			dprintf(CRITICAL, "Apps freq DIS Register: I2C write failure\n");
		}

		ret = qrd_lcd_i2c_write(QRD_LCD_CONTROL_ADDRESS, 0xF0);
		if (ret) {
			dprintf(CRITICAL, "Control Register: I2C write failure\n");
		}
	} else {
		gpio_set_dir(enp_gpio.pin_id, 0); /* ENP */
		gpio_set_dir(enn_gpio.pin_id, 0); /* ENN */
	}
	return 0;
}

static int target_panel_reset_skuk(uint8_t enable)
{
	if (enable) {
		/* for tps65132 ENP pin*/
		gpio_tlmm_config(enp_gpio_skuk.pin_id, 0,
			enp_gpio_skuk.pin_direction, enp_gpio_skuk.pin_pull,
			enp_gpio_skuk.pin_strength, enp_gpio_skuk.pin_state);
		gpio_set_dir(enp_gpio_skuk.pin_id, 2);

		/* for tps65132 ENN pin*/
		gpio_tlmm_config(enn_gpio_skuk.pin_id, 0,
			enn_gpio_skuk.pin_direction, enn_gpio_skuk.pin_pull,
			enn_gpio_skuk.pin_strength, enn_gpio_skuk.pin_state);
		gpio_set_dir(enn_gpio_skuk.pin_id, 2);

		/* configure backlight gpio for SKUK */
		gpio_tlmm_config(bkl_gpio_skuk.pin_id, 0,
			bkl_gpio_skuk.pin_direction, bkl_gpio_skuk.pin_pull,
			bkl_gpio_skuk.pin_strength, bkl_gpio_skuk.pin_state);
		gpio_set_dir(bkl_gpio_skuk.pin_id, 2);
	} else {
		gpio_set_dir(bkl_gpio_skuk.pin_id, 0);
		gpio_set_dir(enp_gpio_skuk.pin_id, 0); /* ENP */
		gpio_set_dir(enn_gpio_skuk.pin_id, 0); /* ENN */
	}
	return 0;
}

int target_panel_reset(uint8_t enable, struct panel_reset_sequence *resetseq,
						struct msm_panel_info *pinfo)
{
	int ret = NO_ERROR;
	uint32_t hw_id = board_hardware_id();
	uint32_t hw_subtype = board_hardware_subtype();

	if (enable) {
		if (pinfo->mipi.use_enable_gpio) {
			/* set enable gpio pin for SKUT1 */
			if ((hw_id == HW_PLATFORM_QRD) &&
				 (hw_subtype == HW_PLATFORM_SUBTYPE_SKUT1))
				enable_gpio = enable_gpio_skut1;
			gpio_tlmm_config(enable_gpio.pin_id, 0,
				enable_gpio.pin_direction, enable_gpio.pin_pull,
				enable_gpio.pin_strength,
				enable_gpio.pin_state);

			gpio_set_dir(enable_gpio.pin_id, 2);
		}

		if (platform_is_msm8939()) {
			if ((hw_id == HW_PLATFORM_QRD) &&
				 (hw_subtype == HW_PLATFORM_SUBTYPE_SKUK))
				target_panel_reset_skuk(enable);
		} else { /* msm8916 */
			if ((hw_id == HW_PLATFORM_QRD) &&
				 (hw_subtype == HW_PLATFORM_SUBTYPE_SKUH))
				target_panel_reset_skuh(enable);
		}

		if (hw_id == HW_PLATFORM_MTP || hw_id == HW_PLATFORM_SURF) {
			/* configure backlight gpio for MTP & CDP */
			gpio_tlmm_config(bkl_gpio.pin_id, 0,
				bkl_gpio.pin_direction, bkl_gpio.pin_pull,
				bkl_gpio.pin_strength, bkl_gpio.pin_state);
			gpio_set_dir(bkl_gpio.pin_id, 2);
		}

		gpio_tlmm_config(reset_gpio.pin_id, 0,
				reset_gpio.pin_direction, reset_gpio.pin_pull,
				reset_gpio.pin_strength, reset_gpio.pin_state);

		gpio_set_dir(reset_gpio.pin_id, 2);

		/* reset */
		for (int i = 0; i < RESET_GPIO_SEQ_LEN; i++) {
			if (resetseq->pin_state[i] == GPIO_STATE_LOW)
				gpio_set_dir(reset_gpio.pin_id, GPIO_STATE_LOW);
			else
				gpio_set_dir(reset_gpio.pin_id, GPIO_STATE_HIGH);
			mdelay(resetseq->sleep[i]);
		}
	} else if(!target_cont_splash_screen()) {
		gpio_set_dir(reset_gpio.pin_id, 0);
		if (pinfo->mipi.use_enable_gpio)
			gpio_set_dir(enable_gpio.pin_id, 0);

		if (platform_is_msm8939()) {
			if ((hw_id == HW_PLATFORM_QRD) &&
				 (hw_subtype == HW_PLATFORM_SUBTYPE_SKUK))
				target_panel_reset_skuk(enable);
		} else { /* msm8916 */
			if ((hw_id == HW_PLATFORM_QRD) &&
				 (hw_subtype == HW_PLATFORM_SUBTYPE_SKUH))
				target_panel_reset_skuh(enable);
		}
	}

	return ret;
}

int target_ldo_ctrl(uint8_t enable, struct msm_panel_info *pinfo)
{
	/*
	 * The PMIC regulators needed for display are enabled in SBL.
	 * There is no access to the regulators is LK.
	 */
	return NO_ERROR;
}

bool target_display_panel_node(char *panel_name, char *pbuf, uint16_t buf_size)
{
	return gcdb_display_cmdline_arg(panel_name, pbuf, buf_size);
}

void target_display_init(const char *panel_name)
{
	uint32_t panel_loop = 0;
	uint32_t ret = 0;

	panel_name += strspn(panel_name, " ");
	if ((!strcmp(panel_name, NO_PANEL_CONFIG))
			|| (!strcmp(panel_name, SIM_VIDEO_PANEL))) {
		dprintf(INFO, "Selected panel: %s\nSkip panel configuration\n",
								panel_name);
		return;
	}

	do {
		target_force_cont_splash_disable(false);
		ret = gcdb_display_init(panel_name, MDP_REV_50, MIPI_FB_ADDR);
		if (!ret || ret == ERR_NOT_SUPPORTED) {
			break;
		} else {
			target_force_cont_splash_disable(true);
			msm_display_off();
		}
	} while (++panel_loop <= oem_panel_max_auto_detect_panels());
}

void target_display_shutdown(void)
{
	gcdb_display_shutdown();
}