--- /dev/null
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 "mdfld_dsi_dpi.h"
+#include "mdfld_output.h"
+#include "mdfld_dsi_pkg_sender.h"
+#include "tc35876x-dsi-lvds.h"
+#include <linux/i2c/tc35876x.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/intel_scu_ipc.h>
+
+static struct i2c_client *tc35876x_client;
+static struct i2c_client *cmi_lcd_i2c_client;
+
+#define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) << (end))
+#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
+
+/* DSI D-PHY Layer Registers */
+#define D0W_DPHYCONTTX 0x0004
+#define CLW_DPHYCONTRX 0x0020
+#define D0W_DPHYCONTRX 0x0024
+#define D1W_DPHYCONTRX 0x0028
+#define D2W_DPHYCONTRX 0x002C
+#define D3W_DPHYCONTRX 0x0030
+#define COM_DPHYCONTRX 0x0038
+#define CLW_CNTRL 0x0040
+#define D0W_CNTRL 0x0044
+#define D1W_CNTRL 0x0048
+#define D2W_CNTRL 0x004C
+#define D3W_CNTRL 0x0050
+#define DFTMODE_CNTRL 0x0054
+
+/* DSI PPI Layer Registers */
+#define PPI_STARTPPI 0x0104
+#define PPI_BUSYPPI 0x0108
+#define PPI_LINEINITCNT 0x0110
+#define PPI_LPTXTIMECNT 0x0114
+#define PPI_LANEENABLE 0x0134
+#define PPI_TX_RX_TA 0x013C
+#define PPI_CLS_ATMR 0x0140
+#define PPI_D0S_ATMR 0x0144
+#define PPI_D1S_ATMR 0x0148
+#define PPI_D2S_ATMR 0x014C
+#define PPI_D3S_ATMR 0x0150
+#define PPI_D0S_CLRSIPOCOUNT 0x0164
+#define PPI_D1S_CLRSIPOCOUNT 0x0168
+#define PPI_D2S_CLRSIPOCOUNT 0x016C
+#define PPI_D3S_CLRSIPOCOUNT 0x0170
+#define CLS_PRE 0x0180
+#define D0S_PRE 0x0184
+#define D1S_PRE 0x0188
+#define D2S_PRE 0x018C
+#define D3S_PRE 0x0190
+#define CLS_PREP 0x01A0
+#define D0S_PREP 0x01A4
+#define D1S_PREP 0x01A8
+#define D2S_PREP 0x01AC
+#define D3S_PREP 0x01B0
+#define CLS_ZERO 0x01C0
+#define D0S_ZERO 0x01C4
+#define D1S_ZERO 0x01C8
+#define D2S_ZERO 0x01CC
+#define D3S_ZERO 0x01D0
+#define PPI_CLRFLG 0x01E0
+#define PPI_CLRSIPO 0x01E4
+#define HSTIMEOUT 0x01F0
+#define HSTIMEOUTENABLE 0x01F4
+
+/* DSI Protocol Layer Registers */
+#define DSI_STARTDSI 0x0204
+#define DSI_BUSYDSI 0x0208
+#define DSI_LANEENABLE 0x0210
+#define DSI_LANESTATUS0 0x0214
+#define DSI_LANESTATUS1 0x0218
+#define DSI_INTSTATUS 0x0220
+#define DSI_INTMASK 0x0224
+#define DSI_INTCLR 0x0228
+#define DSI_LPTXTO 0x0230
+
+/* DSI General Registers */
+#define DSIERRCNT 0x0300
+
+/* DSI Application Layer Registers */
+#define APLCTRL 0x0400
+#define RDPKTLN 0x0404
+
+/* Video Path Registers */
+#define VPCTRL 0x0450
+#define HTIM1 0x0454
+#define HTIM2 0x0458
+#define VTIM1 0x045C
+#define VTIM2 0x0460
+#define VFUEN 0x0464
+
+/* LVDS Registers */
+#define LVMX0003 0x0480
+#define LVMX0407 0x0484
+#define LVMX0811 0x0488
+#define LVMX1215 0x048C
+#define LVMX1619 0x0490
+#define LVMX2023 0x0494
+#define LVMX2427 0x0498
+#define LVCFG 0x049C
+#define LVPHY0 0x04A0
+#define LVPHY1 0x04A4
+
+/* System Registers */
+#define SYSSTAT 0x0500
+#define SYSRST 0x0504
+
+/* GPIO Registers */
+/*#define GPIOC 0x0520*/
+#define GPIOO 0x0524
+#define GPIOI 0x0528
+
+/* I2C Registers */
+#define I2CTIMCTRL 0x0540
+#define I2CMADDR 0x0544
+#define WDATAQ 0x0548
+#define RDATAQ 0x054C
+
+/* Chip/Rev Registers */
+#define IDREG 0x0580
+
+/* Debug Registers */
+#define DEBUG00 0x05A0
+#define DEBUG01 0x05A4
+
+/* Panel CABC registers */
+#define PANEL_PWM_CONTROL 0x90
+#define PANEL_FREQ_DIVIDER_HI 0x91
+#define PANEL_FREQ_DIVIDER_LO 0x92
+#define PANEL_DUTY_CONTROL 0x93
+#define PANEL_MODIFY_RGB 0x94
+#define PANEL_FRAMERATE_CONTROL 0x96
+#define PANEL_PWM_MIN 0x97
+#define PANEL_PWM_REF 0x98
+#define PANEL_PWM_MAX 0x99
+#define PANEL_ALLOW_DISTORT 0x9A
+#define PANEL_BYPASS_PWMI 0x9B
+
+/* Panel color management registers */
+#define PANEL_CM_ENABLE 0x700
+#define PANEL_CM_HUE 0x701
+#define PANEL_CM_SATURATION 0x702
+#define PANEL_CM_INTENSITY 0x703
+#define PANEL_CM_BRIGHTNESS 0x704
+#define PANEL_CM_CE_ENABLE 0x705
+#define PANEL_CM_PEAK_EN 0x710
+#define PANEL_CM_GAIN 0x711
+#define PANEL_CM_HUETABLE_START 0x730
+#define PANEL_CM_HUETABLE_END 0x747 /* inclusive */
+
+/* Input muxing for registers LVMX0003...LVMX2427 */
+enum {
+ INPUT_R0, /* 0 */
+ INPUT_R1,
+ INPUT_R2,
+ INPUT_R3,
+ INPUT_R4,
+ INPUT_R5,
+ INPUT_R6,
+ INPUT_R7,
+ INPUT_G0, /* 8 */
+ INPUT_G1,
+ INPUT_G2,
+ INPUT_G3,
+ INPUT_G4,
+ INPUT_G5,
+ INPUT_G6,
+ INPUT_G7,
+ INPUT_B0, /* 16 */
+ INPUT_B1,
+ INPUT_B2,
+ INPUT_B3,
+ INPUT_B4,
+ INPUT_B5,
+ INPUT_B6,
+ INPUT_B7,
+ INPUT_HSYNC, /* 24 */
+ INPUT_VSYNC,
+ INPUT_DE,
+ LOGIC_0,
+ /* 28...31 undefined */
+};
+
+#define INPUT_MUX(lvmx03, lvmx02, lvmx01, lvmx00) \
+ (FLD_VAL(lvmx03, 29, 24) | FLD_VAL(lvmx02, 20, 16) | \
+ FLD_VAL(lvmx01, 12, 8) | FLD_VAL(lvmx00, 4, 0))
+
+/**
+ * tc35876x_regw - Write DSI-LVDS bridge register using I2C
+ * @client: struct i2c_client to use
+ * @reg: register address
+ * @value: value to write
+ *
+ * Returns 0 on success, or a negative error value.
+ */
+static int tc35876x_regw(struct i2c_client *client, u16 reg, u32 value)
+{
+ int r;
+ u8 tx_data[] = {
+ /* NOTE: Register address big-endian, data little-endian. */
+ (reg >> 8) & 0xff,
+ reg & 0xff,
+ value & 0xff,
+ (value >> 8) & 0xff,
+ (value >> 16) & 0xff,
+ (value >> 24) & 0xff,
+ };
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .buf = tx_data,
+ .len = ARRAY_SIZE(tx_data),
+ },
+ };
+
+ r = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (r < 0) {
+ dev_err(&client->dev, "%s: reg 0x%04x val 0x%08x error %d\n",
+ __func__, reg, value, r);
+ return r;
+ }
+
+ if (r < ARRAY_SIZE(msgs)) {
+ dev_err(&client->dev, "%s: reg 0x%04x val 0x%08x msgs %d\n",
+ __func__, reg, value, r);
+ return -EAGAIN;
+ }
+
+ dev_dbg(&client->dev, "%s: reg 0x%04x val 0x%08x\n",
+ __func__, reg, value);
+
+ return 0;
+}
+
+/**
+ * tc35876x_regr - Read DSI-LVDS bridge register using I2C
+ * @client: struct i2c_client to use
+ * @reg: register address
+ * @value: pointer for storing the value
+ *
+ * Returns 0 on success, or a negative error value.
+ */
+static int tc35876x_regr(struct i2c_client *client, u16 reg, u32 *value)
+{
+ int r;
+ u8 tx_data[] = {
+ (reg >> 8) & 0xff,
+ reg & 0xff,
+ };
+ u8 rx_data[4];
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .buf = tx_data,
+ .len = ARRAY_SIZE(tx_data),
+ },
+ {
+ .addr = client->addr,
+ .flags = I2C_M_RD,
+ .buf = rx_data,
+ .len = ARRAY_SIZE(rx_data),
+ },
+ };
+
+ r = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (r < 0) {
+ dev_err(&client->dev, "%s: reg 0x%04x error %d\n", __func__,
+ reg, r);
+ return r;
+ }
+
+ if (r < ARRAY_SIZE(msgs)) {
+ dev_err(&client->dev, "%s: reg 0x%04x msgs %d\n", __func__,
+ reg, r);
+ return -EAGAIN;
+ }
+
+ *value = rx_data[0] << 24 | rx_data[1] << 16 |
+ rx_data[2] << 8 | rx_data[3];
+
+ dev_dbg(&client->dev, "%s: reg 0x%04x value 0x%08x\n", __func__,
+ reg, *value);
+
+ return 0;
+}
+
+void tc35876x_set_bridge_reset_state(struct drm_device *dev, int state)
+{
+ struct tc35876x_platform_data *pdata;
+
+ if (WARN(!tc35876x_client, "%s called before probe", __func__))
+ return;
+
+ dev_dbg(&tc35876x_client->dev, "%s: state %d\n", __func__, state);
+
+ pdata = dev_get_platdata(&tc35876x_client->dev);
+
+ if (pdata->gpio_bridge_reset == -1)
+ return;
+
+ if (state) {
+ gpio_set_value_cansleep(pdata->gpio_bridge_reset, 0);
+ mdelay(10);
+ } else {
+ /* Pull MIPI Bridge reset pin to Low */
+ gpio_set_value_cansleep(pdata->gpio_bridge_reset, 0);
+ mdelay(20);
+ /* Pull MIPI Bridge reset pin to High */
+ gpio_set_value_cansleep(pdata->gpio_bridge_reset, 1);
+ mdelay(40);
+ }
+}
+
+void tc35876x_configure_lvds_bridge(struct drm_device *dev)
+{
+ struct i2c_client *i2c = tc35876x_client;
+ u32 ppi_lptxtimecnt;
+ u32 txtagocnt;
+ u32 txtasurecnt;
+ u32 id;
+
+ if (WARN(!tc35876x_client, "%s called before probe", __func__))
+ return;
+
+ dev_dbg(&tc35876x_client->dev, "%s\n", __func__);
+
+ if (!tc35876x_regr(i2c, IDREG, &id))
+ dev_info(&tc35876x_client->dev, "tc35876x ID 0x%08x\n", id);
+ else
+ dev_err(&tc35876x_client->dev, "Cannot read ID\n");
+
+ ppi_lptxtimecnt = 4;
+ txtagocnt = (5 * ppi_lptxtimecnt - 3) / 4;
+ txtasurecnt = 3 * ppi_lptxtimecnt / 2;
+ tc35876x_regw(i2c, PPI_TX_RX_TA, FLD_VAL(txtagocnt, 26, 16) |
+ FLD_VAL(txtasurecnt, 10, 0));
+ tc35876x_regw(i2c, PPI_LPTXTIMECNT, FLD_VAL(ppi_lptxtimecnt, 10, 0));
+
+ tc35876x_regw(i2c, PPI_D0S_CLRSIPOCOUNT, FLD_VAL(1, 5, 0));
+ tc35876x_regw(i2c, PPI_D1S_CLRSIPOCOUNT, FLD_VAL(1, 5, 0));
+ tc35876x_regw(i2c, PPI_D2S_CLRSIPOCOUNT, FLD_VAL(1, 5, 0));
+ tc35876x_regw(i2c, PPI_D3S_CLRSIPOCOUNT, FLD_VAL(1, 5, 0));
+
+ /* Enabling MIPI & PPI lanes, Enable 4 lanes */
+ tc35876x_regw(i2c, PPI_LANEENABLE,
+ BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0));
+ tc35876x_regw(i2c, DSI_LANEENABLE,
+ BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0));
+ tc35876x_regw(i2c, PPI_STARTPPI, BIT(0));
+ tc35876x_regw(i2c, DSI_STARTDSI, BIT(0));
+
+ /* Setting LVDS output frequency */
+ tc35876x_regw(i2c, LVPHY0, FLD_VAL(1, 20, 16) |
+ FLD_VAL(2, 15, 14) | FLD_VAL(6, 4, 0)); /* 0x00048006 */
+
+ /* Setting video panel control register,0x00000120 VTGen=ON ?!?!? */
+ tc35876x_regw(i2c, VPCTRL, BIT(8) | BIT(5));
+
+ /* Horizontal back porch and horizontal pulse width. 0x00280028 */
+ tc35876x_regw(i2c, HTIM1, FLD_VAL(40, 24, 16) | FLD_VAL(40, 8, 0));
+
+ /* Horizontal front porch and horizontal active video size. 0x00500500*/
+ tc35876x_regw(i2c, HTIM2, FLD_VAL(80, 24, 16) | FLD_VAL(1280, 10, 0));
+
+ /* Vertical back porch and vertical sync pulse width. 0x000e000a */
+ tc35876x_regw(i2c, VTIM1, FLD_VAL(14, 23, 16) | FLD_VAL(10, 7, 0));
+
+ /* Vertical front porch and vertical display size. 0x000e0320 */
+ tc35876x_regw(i2c, VTIM2, FLD_VAL(14, 23, 16) | FLD_VAL(800, 10, 0));
+
+ /* Set above HTIM1, HTIM2, VTIM1, and VTIM2 at next VSYNC. */
+ tc35876x_regw(i2c, VFUEN, BIT(0));
+
+ /* Soft reset LCD controller. */
+ tc35876x_regw(i2c, SYSRST, BIT(2));
+
+ /* LVDS-TX input muxing */
+ tc35876x_regw(i2c, LVMX0003,
+ INPUT_MUX(INPUT_R5, INPUT_R4, INPUT_R3, INPUT_R2));
+ tc35876x_regw(i2c, LVMX0407,
+ INPUT_MUX(INPUT_G2, INPUT_R7, INPUT_R1, INPUT_R6));
+ tc35876x_regw(i2c, LVMX0811,
+ INPUT_MUX(INPUT_G1, INPUT_G0, INPUT_G4, INPUT_G3));
+ tc35876x_regw(i2c, LVMX1215,
+ INPUT_MUX(INPUT_B2, INPUT_G7, INPUT_G6, INPUT_G5));
+ tc35876x_regw(i2c, LVMX1619,
+ INPUT_MUX(INPUT_B4, INPUT_B3, INPUT_B1, INPUT_B0));
+ tc35876x_regw(i2c, LVMX2023,
+ INPUT_MUX(LOGIC_0, INPUT_B7, INPUT_B6, INPUT_B5));
+ tc35876x_regw(i2c, LVMX2427,
+ INPUT_MUX(INPUT_R0, INPUT_DE, INPUT_VSYNC, INPUT_HSYNC));
+
+ /* Enable LVDS transmitter. */
+ tc35876x_regw(i2c, LVCFG, BIT(0));
+
+ /* Clear notifications. Don't write reserved bits. Was write 0xffffffff
+ * to 0x0288, must be in error?! */
+ tc35876x_regw(i2c, DSI_INTCLR, FLD_MASK(31, 30) | FLD_MASK(22, 0));
+}
+
+#define GPIOPWMCTRL 0x38F
+#define PWM0CLKDIV0 0x62 /* low byte */
+#define PWM0CLKDIV1 0x61 /* high byte */
+
+#define SYSTEMCLK 19200000UL /* 19.2 MHz */
+#define PWM_FREQUENCY 9600 /* Hz */
+
+/* f = baseclk / (clkdiv + 1) => clkdiv = (baseclk - f) / f */
+static inline u16 calc_clkdiv(unsigned long baseclk, unsigned int f)
+{
+ return (baseclk - f) / f;
+}
+
+static void tc35876x_brightness_init(struct drm_device *dev)
+{
+ int ret;
+ u8 pwmctrl;
+ u16 clkdiv;
+
+ /* Make sure the PWM reference is the 19.2 MHz system clock. Read first
+ * instead of setting directly to catch potential conflicts between PWM
+ * users. */
+ ret = intel_scu_ipc_ioread8(GPIOPWMCTRL, &pwmctrl);
+ if (ret || pwmctrl != 0x01) {
+ if (ret)
+ dev_err(&dev->pdev->dev, "GPIOPWMCTRL read failed\n");
+ else
+ dev_warn(&dev->pdev->dev, "GPIOPWMCTRL was not set to system clock (pwmctrl = 0x%02x)\n", pwmctrl);
+
+ ret = intel_scu_ipc_iowrite8(GPIOPWMCTRL, 0x01);
+ if (ret)
+ dev_err(&dev->pdev->dev, "GPIOPWMCTRL set failed\n");
+ }
+
+ clkdiv = calc_clkdiv(SYSTEMCLK, PWM_FREQUENCY);
+
+ ret = intel_scu_ipc_iowrite8(PWM0CLKDIV1, (clkdiv >> 8) & 0xff);
+ if (!ret)
+ ret = intel_scu_ipc_iowrite8(PWM0CLKDIV0, clkdiv & 0xff);
+
+ if (ret)
+ dev_err(&dev->pdev->dev, "PWM0CLKDIV set failed\n");
+ else
+ dev_dbg(&dev->pdev->dev, "PWM0CLKDIV set to 0x%04x (%d Hz)\n",
+ clkdiv, PWM_FREQUENCY);
+}
+
+#define PWM0DUTYCYCLE 0x67
+
+void tc35876x_brightness_control(struct drm_device *dev, int level)
+{
+ int ret;
+ u8 duty_val;
+ u8 panel_duty_val;
+
+ level = clamp(level, 0, MDFLD_DSI_BRIGHTNESS_MAX_LEVEL);
+
+ /* PWM duty cycle 0x00...0x63 corresponds to 0...99% */
+ duty_val = level * 0x63 / MDFLD_DSI_BRIGHTNESS_MAX_LEVEL;
+
+ /* I won't pretend to understand this formula. The panel spec is quite
+ * bad engrish.
+ */
+ panel_duty_val = (2 * level - 100) * 0xA9 /
+ MDFLD_DSI_BRIGHTNESS_MAX_LEVEL + 0x56;
+
+ ret = intel_scu_ipc_iowrite8(PWM0DUTYCYCLE, duty_val);
+ if (ret)
+ dev_err(&tc35876x_client->dev, "%s: ipc write fail\n",
+ __func__);
+
+ if (cmi_lcd_i2c_client) {
+ ret = i2c_smbus_write_byte_data(cmi_lcd_i2c_client,
+ PANEL_PWM_MAX, panel_duty_val);
+ if (ret < 0)
+ dev_err(&cmi_lcd_i2c_client->dev, "%s: i2c write failed\n",
+ __func__);
+ }
+}
+
+void tc35876x_toshiba_bridge_panel_off(struct drm_device *dev)
+{
+ struct tc35876x_platform_data *pdata;
+
+ if (WARN(!tc35876x_client, "%s called before probe", __func__))
+ return;
+
+ dev_dbg(&tc35876x_client->dev, "%s\n", __func__);
+
+ pdata = dev_get_platdata(&tc35876x_client->dev);
+
+ if (pdata->gpio_panel_bl_en != -1)
+ gpio_set_value_cansleep(pdata->gpio_panel_bl_en, 0);
+
+ if (pdata->gpio_panel_vadd != -1)
+ gpio_set_value_cansleep(pdata->gpio_panel_vadd, 0);
+}
+
+void tc35876x_toshiba_bridge_panel_on(struct drm_device *dev)
+{
+ struct tc35876x_platform_data *pdata;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+
+ if (WARN(!tc35876x_client, "%s called before probe", __func__))
+ return;
+
+ dev_dbg(&tc35876x_client->dev, "%s\n", __func__);
+
+ pdata = dev_get_platdata(&tc35876x_client->dev);
+
+ if (pdata->gpio_panel_vadd != -1) {
+ gpio_set_value_cansleep(pdata->gpio_panel_vadd, 1);
+ msleep(260);
+ }
+
+ if (cmi_lcd_i2c_client) {
+ int ret;
+ dev_dbg(&cmi_lcd_i2c_client->dev, "setting TCON\n");
+ /* Bit 4 is average_saving. Setting it to 1, the brightness is
+ * referenced to the average of the frame content. 0 means
+ * reference to the maximum of frame contents. Bits 3:0 are
+ * allow_distort. When set to a nonzero value, all color values
+ * between 255-allow_distort*2 and 255 are mapped to the
+ * 255-allow_distort*2 value.
+ */
+ ret = i2c_smbus_write_byte_data(cmi_lcd_i2c_client,
+ PANEL_ALLOW_DISTORT, 0x10);
+ if (ret < 0)
+ dev_err(&cmi_lcd_i2c_client->dev,
+ "i2c write failed (%d)\n", ret);
+ ret = i2c_smbus_write_byte_data(cmi_lcd_i2c_client,
+ PANEL_BYPASS_PWMI, 0);
+ if (ret < 0)
+ dev_err(&cmi_lcd_i2c_client->dev,
+ "i2c write failed (%d)\n", ret);
+ /* Set minimum brightness value - this is tunable */
+ ret = i2c_smbus_write_byte_data(cmi_lcd_i2c_client,
+ PANEL_PWM_MIN, 0x35);
+ if (ret < 0)
+ dev_err(&cmi_lcd_i2c_client->dev,
+ "i2c write failed (%d)\n", ret);
+ }
+
+ if (pdata->gpio_panel_bl_en != -1)
+ gpio_set_value_cansleep(pdata->gpio_panel_bl_en, 1);
+
+ tc35876x_brightness_control(dev, dev_priv->brightness_adjusted);
+}
+
+static struct drm_display_mode *tc35876x_get_config_mode(struct drm_device *dev)
+{
+ struct drm_display_mode *mode;
+
+ dev_dbg(&dev->pdev->dev, "%s\n", __func__);
+
+ mode = kzalloc(sizeof(*mode), GFP_KERNEL);
+ if (!mode)
+ return NULL;
+
+ /* FIXME: do this properly. */
+ mode->hdisplay = 1280;
+ mode->vdisplay = 800;
+ mode->hsync_start = 1360;
+ mode->hsync_end = 1400;
+ mode->htotal = 1440;
+ mode->vsync_start = 814;
+ mode->vsync_end = 824;
+ mode->vtotal = 838;
+ mode->clock = 33324 << 1;
+
+ dev_info(&dev->pdev->dev, "hdisplay(w) = %d\n", mode->hdisplay);
+ dev_info(&dev->pdev->dev, "vdisplay(h) = %d\n", mode->vdisplay);
+ dev_info(&dev->pdev->dev, "HSS = %d\n", mode->hsync_start);
+ dev_info(&dev->pdev->dev, "HSE = %d\n", mode->hsync_end);
+ dev_info(&dev->pdev->dev, "htotal = %d\n", mode->htotal);
+ dev_info(&dev->pdev->dev, "VSS = %d\n", mode->vsync_start);
+ dev_info(&dev->pdev->dev, "VSE = %d\n", mode->vsync_end);
+ dev_info(&dev->pdev->dev, "vtotal = %d\n", mode->vtotal);
+ dev_info(&dev->pdev->dev, "clock = %d\n", mode->clock);
+
+ drm_mode_set_name(mode);
+ drm_mode_set_crtcinfo(mode, 0);
+
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+ return mode;
+}
+
+/* DV1 Active area 216.96 x 135.6 mm */
+#define DV1_PANEL_WIDTH 217
+#define DV1_PANEL_HEIGHT 136
+
+static int tc35876x_get_panel_info(struct drm_device *dev, int pipe,
+ struct panel_info *pi)
+{
+ if (!dev || !pi)
+ return -EINVAL;
+
+ pi->width_mm = DV1_PANEL_WIDTH;
+ pi->height_mm = DV1_PANEL_HEIGHT;
+
+ return 0;
+}
+
+static int tc35876x_bridge_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tc35876x_platform_data *pdata;
+
+ dev_info(&client->dev, "%s\n", __func__);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(&client->dev, "%s: i2c_check_functionality() failed\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ pdata = dev_get_platdata(&client->dev);
+ if (!pdata) {
+ dev_err(&client->dev, "%s: no platform data\n", __func__);
+ return -ENODEV;
+ }
+
+ if (pdata->gpio_bridge_reset != -1) {
+ gpio_request(pdata->gpio_bridge_reset, "tc35876x bridge reset");
+ gpio_direction_output(pdata->gpio_bridge_reset, 0);
+ }
+
+ if (pdata->gpio_panel_bl_en != -1) {
+ gpio_request(pdata->gpio_panel_bl_en, "tc35876x panel bl en");
+ gpio_direction_output(pdata->gpio_panel_bl_en, 0);
+ }
+
+ if (pdata->gpio_panel_vadd != -1) {
+ gpio_request(pdata->gpio_panel_vadd, "tc35876x panel vadd");
+ gpio_direction_output(pdata->gpio_panel_vadd, 0);
+ }
+
+ tc35876x_client = client;
+
+ return 0;
+}
+
+static int tc35876x_bridge_remove(struct i2c_client *client)
+{
+ struct tc35876x_platform_data *pdata = dev_get_platdata(&client->dev);
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (pdata->gpio_bridge_reset != -1)
+ gpio_free(pdata->gpio_bridge_reset);
+
+ if (pdata->gpio_panel_bl_en != -1)
+ gpio_free(pdata->gpio_panel_bl_en);
+
+ if (pdata->gpio_panel_vadd != -1)
+ gpio_free(pdata->gpio_panel_vadd);
+
+ tc35876x_client = NULL;
+
+ return 0;
+}
+
+static const struct i2c_device_id tc35876x_bridge_id[] = {
+ { "i2c_disp_brig", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tc35876x_bridge_id);
+
+static struct i2c_driver tc35876x_bridge_i2c_driver = {
+ .driver = {
+ .name = "i2c_disp_brig",
+ },
+ .id_table = tc35876x_bridge_id,
+ .probe = tc35876x_bridge_probe,
+ .remove = tc35876x_bridge_remove,
+};
+
+/* LCD panel I2C */
+static int cmi_lcd_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ dev_info(&client->dev, "%s\n", __func__);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(&client->dev, "%s: i2c_check_functionality() failed\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ cmi_lcd_i2c_client = client;
+
+ return 0;
+}
+
+static int cmi_lcd_i2c_remove(struct i2c_client *client)
+{
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ cmi_lcd_i2c_client = NULL;
+
+ return 0;
+}
+
+static const struct i2c_device_id cmi_lcd_i2c_id[] = {
+ { "cmi-lcd", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, cmi_lcd_i2c_id);
+
+static struct i2c_driver cmi_lcd_i2c_driver = {
+ .driver = {
+ .name = "cmi-lcd",
+ },
+ .id_table = cmi_lcd_i2c_id,
+ .probe = cmi_lcd_i2c_probe,
+ .remove = cmi_lcd_i2c_remove,
+};
+
+/* HACK to create I2C device while it's not created by platform code */
+#define CMI_LCD_I2C_ADAPTER 2
+#define CMI_LCD_I2C_ADDR 0x60
+
+static int cmi_lcd_hack_create_device(void)
+{
+ struct i2c_adapter *adapter;
+ struct i2c_client *client;
+ struct i2c_board_info info = {
+ .type = "cmi-lcd",
+ .addr = CMI_LCD_I2C_ADDR,
+ };
+
+ pr_debug("%s\n", __func__);
+
+ adapter = i2c_get_adapter(CMI_LCD_I2C_ADAPTER);
+ if (!adapter) {
+ pr_err("%s: i2c_get_adapter(%d) failed\n", __func__,
+ CMI_LCD_I2C_ADAPTER);
+ return -EINVAL;
+ }
+
+ client = i2c_new_device(adapter, &info);
+ if (!client) {
+ pr_err("%s: i2c_new_device() failed\n", __func__);
+ i2c_put_adapter(adapter);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct drm_encoder_helper_funcs tc35876x_encoder_helper_funcs = {
+ .dpms = mdfld_dsi_dpi_dpms,
+ .mode_fixup = mdfld_dsi_dpi_mode_fixup,
+ .prepare = mdfld_dsi_dpi_prepare,
+ .mode_set = mdfld_dsi_dpi_mode_set,
+ .commit = mdfld_dsi_dpi_commit,
+};
+
+static const struct drm_encoder_funcs tc35876x_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+const struct panel_funcs mdfld_tc35876x_funcs = {
+ .encoder_funcs = &tc35876x_encoder_funcs,
+ .encoder_helper_funcs = &tc35876x_encoder_helper_funcs,
+ .get_config_mode = tc35876x_get_config_mode,
+ .get_panel_info = tc35876x_get_panel_info,
+};
+
+void tc35876x_init(struct drm_device *dev)
+{
+ int r;
+
+ dev_dbg(&dev->pdev->dev, "%s\n", __func__);
+
+ cmi_lcd_hack_create_device();
+
+ r = i2c_add_driver(&cmi_lcd_i2c_driver);
+ if (r < 0)
+ dev_err(&dev->pdev->dev,
+ "%s: i2c_add_driver() for %s failed (%d)\n",
+ __func__, cmi_lcd_i2c_driver.driver.name, r);
+
+ r = i2c_add_driver(&tc35876x_bridge_i2c_driver);
+ if (r < 0)
+ dev_err(&dev->pdev->dev,
+ "%s: i2c_add_driver() for %s failed (%d)\n",
+ __func__, tc35876x_bridge_i2c_driver.driver.name, r);
+
+ tc35876x_brightness_init(dev);
+}
+
+void tc35876x_exit(void)
+{
+ pr_debug("%s\n", __func__);
+
+ i2c_del_driver(&tc35876x_bridge_i2c_driver);
+
+ if (cmi_lcd_i2c_client)
+ i2c_del_driver(&cmi_lcd_i2c_driver);
+}
Code Review / kvmfornfv.git / blobdiff