OMAPDSS: Add TPO TD043MTEA1 panel driver
Add TPO TD043MTEA1 panel driver which uses the new DSS device model and DSS ops. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This commit is contained in:
Tomi Valkeinen
Родитель
922ae890a9
Коммит
2e1def0c21
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@ -55,4 +55,11 @@ config DISPLAY_PANEL_SHARP_LS037V7DW01
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depends on BACKLIGHT_CLASS_DEVICE
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help
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LCD Panel used in TI's SDP3430 and EVM boards
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config DISPLAY_PANEL_TPO_TD043MTEA1
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tristate "TPO TD043MTEA1 LCD Panel"
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depends on SPI
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help
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LCD Panel used in OMAP3 Pandora
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endmenu
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@ -8,3 +8,4 @@ obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o
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obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
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obj-$(CONFIG_DISPLAY_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o
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obj-$(CONFIG_DISPLAY_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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obj-$(CONFIG_DISPLAY_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
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@ -0,0 +1,646 @@
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/*
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* TPO TD043MTEA1 Panel driver
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*
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* Author: Gražvydas Ignotas <notasas@gmail.com>
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* Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/spi/spi.h>
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#include <linux/regulator/consumer.h>
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#include <linux/gpio.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <video/omapdss.h>
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#include <video/omap-panel-data.h>
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#define TPO_R02_MODE(x) ((x) & 7)
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#define TPO_R02_MODE_800x480 7
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#define TPO_R02_NCLK_RISING BIT(3)
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#define TPO_R02_HSYNC_HIGH BIT(4)
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#define TPO_R02_VSYNC_HIGH BIT(5)
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#define TPO_R03_NSTANDBY BIT(0)
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#define TPO_R03_EN_CP_CLK BIT(1)
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#define TPO_R03_EN_VGL_PUMP BIT(2)
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#define TPO_R03_EN_PWM BIT(3)
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#define TPO_R03_DRIVING_CAP_100 BIT(4)
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#define TPO_R03_EN_PRE_CHARGE BIT(6)
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#define TPO_R03_SOFTWARE_CTL BIT(7)
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#define TPO_R04_NFLIP_H BIT(0)
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#define TPO_R04_NFLIP_V BIT(1)
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#define TPO_R04_CP_CLK_FREQ_1H BIT(2)
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#define TPO_R04_VGL_FREQ_1H BIT(4)
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#define TPO_R03_VAL_NORMAL (TPO_R03_NSTANDBY | TPO_R03_EN_CP_CLK | \
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TPO_R03_EN_VGL_PUMP | TPO_R03_EN_PWM | \
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TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \
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TPO_R03_SOFTWARE_CTL)
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#define TPO_R03_VAL_STANDBY (TPO_R03_DRIVING_CAP_100 | \
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TPO_R03_EN_PRE_CHARGE | TPO_R03_SOFTWARE_CTL)
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static const u16 tpo_td043_def_gamma[12] = {
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105, 315, 381, 431, 490, 537, 579, 686, 780, 837, 880, 1023
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};
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struct panel_drv_data {
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struct omap_dss_device dssdev;
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struct omap_dss_device *in;
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struct omap_video_timings videomode;
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int data_lines;
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struct spi_device *spi;
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struct regulator *vcc_reg;
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int nreset_gpio;
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u16 gamma[12];
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u32 mode;
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u32 hmirror:1;
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u32 vmirror:1;
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u32 powered_on:1;
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u32 spi_suspended:1;
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u32 power_on_resume:1;
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};
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static const struct omap_video_timings tpo_td043_timings = {
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.x_res = 800,
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.y_res = 480,
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.pixel_clock = 36000,
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.hsw = 1,
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.hfp = 68,
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.hbp = 214,
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.vsw = 1,
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.vfp = 39,
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.vbp = 34,
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.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.data_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
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.de_level = OMAPDSS_SIG_ACTIVE_HIGH,
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.sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
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};
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#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
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static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data)
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{
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struct spi_message m;
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struct spi_transfer xfer;
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u16 w;
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int r;
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spi_message_init(&m);
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memset(&xfer, 0, sizeof(xfer));
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w = ((u16)addr << 10) | (1 << 8) | data;
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xfer.tx_buf = &w;
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xfer.bits_per_word = 16;
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xfer.len = 2;
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spi_message_add_tail(&xfer, &m);
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r = spi_sync(spi, &m);
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if (r < 0)
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dev_warn(&spi->dev, "failed to write to LCD reg (%d)\n", r);
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return r;
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}
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static void tpo_td043_write_gamma(struct spi_device *spi, u16 gamma[12])
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{
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u8 i, val;
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/* gamma bits [9:8] */
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for (val = i = 0; i < 4; i++)
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val |= (gamma[i] & 0x300) >> ((i + 1) * 2);
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tpo_td043_write(spi, 0x11, val);
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for (val = i = 0; i < 4; i++)
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val |= (gamma[i+4] & 0x300) >> ((i + 1) * 2);
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tpo_td043_write(spi, 0x12, val);
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for (val = i = 0; i < 4; i++)
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val |= (gamma[i+8] & 0x300) >> ((i + 1) * 2);
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tpo_td043_write(spi, 0x13, val);
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/* gamma bits [7:0] */
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for (val = i = 0; i < 12; i++)
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tpo_td043_write(spi, 0x14 + i, gamma[i] & 0xff);
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}
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static int tpo_td043_write_mirror(struct spi_device *spi, bool h, bool v)
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{
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u8 reg4 = TPO_R04_NFLIP_H | TPO_R04_NFLIP_V |
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TPO_R04_CP_CLK_FREQ_1H | TPO_R04_VGL_FREQ_1H;
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if (h)
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reg4 &= ~TPO_R04_NFLIP_H;
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if (v)
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reg4 &= ~TPO_R04_NFLIP_V;
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return tpo_td043_write(spi, 4, reg4);
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}
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static int tpo_td043_set_hmirror(struct omap_dss_device *dssdev, bool enable)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
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ddata->hmirror = enable;
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return tpo_td043_write_mirror(ddata->spi, ddata->hmirror,
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ddata->vmirror);
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}
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static bool tpo_td043_get_hmirror(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
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return ddata->hmirror;
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}
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static ssize_t tpo_td043_vmirror_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE, "%d\n", ddata->vmirror);
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}
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static ssize_t tpo_td043_vmirror_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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int val;
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int ret;
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ret = kstrtoint(buf, 0, &val);
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if (ret < 0)
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return ret;
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val = !!val;
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ret = tpo_td043_write_mirror(ddata->spi, ddata->hmirror, val);
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if (ret < 0)
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return ret;
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ddata->vmirror = val;
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return count;
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}
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static ssize_t tpo_td043_mode_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE, "%d\n", ddata->mode);
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}
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static ssize_t tpo_td043_mode_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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long val;
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int ret;
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ret = kstrtol(buf, 0, &val);
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if (ret != 0 || val & ~7)
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return -EINVAL;
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ddata->mode = val;
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val |= TPO_R02_NCLK_RISING;
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tpo_td043_write(ddata->spi, 2, val);
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return count;
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}
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static ssize_t tpo_td043_gamma_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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ssize_t len = 0;
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int ret;
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int i;
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for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++) {
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ret = snprintf(buf + len, PAGE_SIZE - len, "%u ",
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ddata->gamma[i]);
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if (ret < 0)
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return ret;
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len += ret;
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}
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buf[len - 1] = '\n';
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return len;
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}
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static ssize_t tpo_td043_gamma_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct panel_drv_data *ddata = dev_get_drvdata(dev);
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unsigned int g[12];
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int ret;
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int i;
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ret = sscanf(buf, "%u %u %u %u %u %u %u %u %u %u %u %u",
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&g[0], &g[1], &g[2], &g[3], &g[4], &g[5],
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&g[6], &g[7], &g[8], &g[9], &g[10], &g[11]);
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if (ret != 12)
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return -EINVAL;
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for (i = 0; i < 12; i++)
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ddata->gamma[i] = g[i];
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tpo_td043_write_gamma(ddata->spi, ddata->gamma);
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return count;
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}
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static DEVICE_ATTR(vmirror, S_IRUGO | S_IWUSR,
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tpo_td043_vmirror_show, tpo_td043_vmirror_store);
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static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
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tpo_td043_mode_show, tpo_td043_mode_store);
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static DEVICE_ATTR(gamma, S_IRUGO | S_IWUSR,
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tpo_td043_gamma_show, tpo_td043_gamma_store);
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static struct attribute *tpo_td043_attrs[] = {
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&dev_attr_vmirror.attr,
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&dev_attr_mode.attr,
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&dev_attr_gamma.attr,
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NULL,
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};
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static struct attribute_group tpo_td043_attr_group = {
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.attrs = tpo_td043_attrs,
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};
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static int tpo_td043_power_on(struct panel_drv_data *ddata)
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{
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int r;
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if (ddata->powered_on)
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return 0;
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r = regulator_enable(ddata->vcc_reg);
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if (r != 0)
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return r;
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/* wait for panel to stabilize */
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msleep(160);
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if (gpio_is_valid(ddata->nreset_gpio))
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gpio_set_value(ddata->nreset_gpio, 1);
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tpo_td043_write(ddata->spi, 2,
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TPO_R02_MODE(ddata->mode) | TPO_R02_NCLK_RISING);
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tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_NORMAL);
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tpo_td043_write(ddata->spi, 0x20, 0xf0);
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tpo_td043_write(ddata->spi, 0x21, 0xf0);
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tpo_td043_write_mirror(ddata->spi, ddata->hmirror,
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ddata->vmirror);
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tpo_td043_write_gamma(ddata->spi, ddata->gamma);
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ddata->powered_on = 1;
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return 0;
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}
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static void tpo_td043_power_off(struct panel_drv_data *ddata)
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{
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if (!ddata->powered_on)
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return;
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tpo_td043_write(ddata->spi, 3,
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TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM);
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if (gpio_is_valid(ddata->nreset_gpio))
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gpio_set_value(ddata->nreset_gpio, 0);
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/* wait for at least 2 vsyncs before cutting off power */
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msleep(50);
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tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_STANDBY);
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regulator_disable(ddata->vcc_reg);
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ddata->powered_on = 0;
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}
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static int tpo_td043_connect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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if (omapdss_device_is_connected(dssdev))
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return 0;
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r = in->ops.dpi->connect(in, dssdev);
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if (r)
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return r;
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return 0;
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}
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static void tpo_td043_disconnect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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if (!omapdss_device_is_connected(dssdev))
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return;
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in->ops.dpi->disconnect(in, dssdev);
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}
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static int tpo_td043_enable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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if (!omapdss_device_is_connected(dssdev))
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return -ENODEV;
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if (omapdss_device_is_enabled(dssdev))
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return 0;
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in->ops.dpi->set_data_lines(in, ddata->data_lines);
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in->ops.dpi->set_timings(in, &ddata->videomode);
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r = in->ops.dpi->enable(in);
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if (r)
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return r;
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/*
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* If we are resuming from system suspend, SPI clocks might not be
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* enabled yet, so we'll program the LCD from SPI PM resume callback.
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*/
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if (!ddata->spi_suspended) {
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r = tpo_td043_power_on(ddata);
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if (r) {
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in->ops.dpi->disable(in);
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return r;
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}
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}
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dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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return 0;
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}
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static void tpo_td043_disable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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if (!omapdss_device_is_enabled(dssdev))
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return;
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in->ops.dpi->disable(in);
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if (!ddata->spi_suspended)
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tpo_td043_power_off(ddata);
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dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
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}
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static void tpo_td043_set_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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ddata->videomode = *timings;
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dssdev->panel.timings = *timings;
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in->ops.dpi->set_timings(in, timings);
|
||||
}
|
||||
|
||||
static void tpo_td043_get_timings(struct omap_dss_device *dssdev,
|
||||
struct omap_video_timings *timings)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
|
||||
*timings = ddata->videomode;
|
||||
}
|
||||
|
||||
static int tpo_td043_check_timings(struct omap_dss_device *dssdev,
|
||||
struct omap_video_timings *timings)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
return in->ops.dpi->check_timings(in, timings);
|
||||
}
|
||||
|
||||
static struct omap_dss_driver tpo_td043_ops = {
|
||||
.connect = tpo_td043_connect,
|
||||
.disconnect = tpo_td043_disconnect,
|
||||
|
||||
.enable = tpo_td043_enable,
|
||||
.disable = tpo_td043_disable,
|
||||
|
||||
.set_timings = tpo_td043_set_timings,
|
||||
.get_timings = tpo_td043_get_timings,
|
||||
.check_timings = tpo_td043_check_timings,
|
||||
|
||||
.set_mirror = tpo_td043_set_hmirror,
|
||||
.get_mirror = tpo_td043_get_hmirror,
|
||||
|
||||
.get_resolution = omapdss_default_get_resolution,
|
||||
};
|
||||
|
||||
|
||||
static int tpo_td043_probe_pdata(struct spi_device *spi)
|
||||
{
|
||||
const struct panel_tpo_td043mtea1_platform_data *pdata;
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
||||
struct omap_dss_device *dssdev, *in;
|
||||
|
||||
pdata = dev_get_platdata(&spi->dev);
|
||||
|
||||
ddata->nreset_gpio = pdata->nreset_gpio;
|
||||
|
||||
in = omap_dss_find_output(pdata->source);
|
||||
if (in == NULL) {
|
||||
dev_err(&spi->dev, "failed to find video source '%s'\n",
|
||||
pdata->source);
|
||||
return -EPROBE_DEFER;
|
||||
}
|
||||
ddata->in = in;
|
||||
|
||||
ddata->data_lines = pdata->data_lines;
|
||||
|
||||
dssdev = &ddata->dssdev;
|
||||
dssdev->name = pdata->name;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tpo_td043_probe(struct spi_device *spi)
|
||||
{
|
||||
struct panel_drv_data *ddata;
|
||||
struct omap_dss_device *dssdev;
|
||||
int r;
|
||||
|
||||
dev_dbg(&spi->dev, "%s\n", __func__);
|
||||
|
||||
spi->bits_per_word = 16;
|
||||
spi->mode = SPI_MODE_0;
|
||||
|
||||
r = spi_setup(spi);
|
||||
if (r < 0) {
|
||||
dev_err(&spi->dev, "spi_setup failed: %d\n", r);
|
||||
return r;
|
||||
}
|
||||
|
||||
ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
|
||||
if (ddata == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
dev_set_drvdata(&spi->dev, ddata);
|
||||
|
||||
ddata->spi = spi;
|
||||
|
||||
if (dev_get_platdata(&spi->dev)) {
|
||||
r = tpo_td043_probe_pdata(spi);
|
||||
if (r)
|
||||
return r;
|
||||
} else {
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ddata->mode = TPO_R02_MODE_800x480;
|
||||
memcpy(ddata->gamma, tpo_td043_def_gamma, sizeof(ddata->gamma));
|
||||
|
||||
ddata->vcc_reg = devm_regulator_get(&spi->dev, "vcc");
|
||||
if (IS_ERR(ddata->vcc_reg)) {
|
||||
dev_err(&spi->dev, "failed to get LCD VCC regulator\n");
|
||||
r = PTR_ERR(ddata->vcc_reg);
|
||||
goto err_regulator;
|
||||
}
|
||||
|
||||
if (gpio_is_valid(ddata->nreset_gpio)) {
|
||||
r = devm_gpio_request_one(&spi->dev,
|
||||
ddata->nreset_gpio, GPIOF_OUT_INIT_LOW,
|
||||
"lcd reset");
|
||||
if (r < 0) {
|
||||
dev_err(&spi->dev, "couldn't request reset GPIO\n");
|
||||
goto err_gpio_req;
|
||||
}
|
||||
}
|
||||
|
||||
r = sysfs_create_group(&spi->dev.kobj, &tpo_td043_attr_group);
|
||||
if (r) {
|
||||
dev_err(&spi->dev, "failed to create sysfs files\n");
|
||||
goto err_sysfs;
|
||||
}
|
||||
|
||||
ddata->videomode = tpo_td043_timings;
|
||||
|
||||
dssdev = &ddata->dssdev;
|
||||
dssdev->dev = &spi->dev;
|
||||
dssdev->driver = &tpo_td043_ops;
|
||||
dssdev->type = OMAP_DISPLAY_TYPE_DPI;
|
||||
dssdev->owner = THIS_MODULE;
|
||||
dssdev->panel.timings = ddata->videomode;
|
||||
|
||||
r = omapdss_register_display(dssdev);
|
||||
if (r) {
|
||||
dev_err(&spi->dev, "Failed to register panel\n");
|
||||
goto err_reg;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_reg:
|
||||
sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group);
|
||||
err_sysfs:
|
||||
err_gpio_req:
|
||||
err_regulator:
|
||||
omap_dss_put_device(ddata->in);
|
||||
return r;
|
||||
}
|
||||
|
||||
static int tpo_td043_remove(struct spi_device *spi)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
||||
struct omap_dss_device *dssdev = &ddata->dssdev;
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
dev_dbg(&ddata->spi->dev, "%s\n", __func__);
|
||||
|
||||
omapdss_unregister_display(dssdev);
|
||||
|
||||
tpo_td043_disable(dssdev);
|
||||
tpo_td043_disconnect(dssdev);
|
||||
|
||||
omap_dss_put_device(in);
|
||||
|
||||
sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int tpo_td043_spi_suspend(struct device *dev)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(dev);
|
||||
|
||||
dev_dbg(dev, "tpo_td043_spi_suspend, tpo %p\n", ddata);
|
||||
|
||||
ddata->power_on_resume = ddata->powered_on;
|
||||
tpo_td043_power_off(ddata);
|
||||
ddata->spi_suspended = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tpo_td043_spi_resume(struct device *dev)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
dev_dbg(dev, "tpo_td043_spi_resume\n");
|
||||
|
||||
if (ddata->power_on_resume) {
|
||||
ret = tpo_td043_power_on(ddata);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
ddata->spi_suspended = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(tpo_td043_spi_pm,
|
||||
tpo_td043_spi_suspend, tpo_td043_spi_resume);
|
||||
|
||||
static struct spi_driver tpo_td043_spi_driver = {
|
||||
.driver = {
|
||||
.name = "panel-tpo-td043mtea1",
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &tpo_td043_spi_pm,
|
||||
},
|
||||
.probe = tpo_td043_probe,
|
||||
.remove = tpo_td043_remove,
|
||||
};
|
||||
|
||||
module_spi_driver(tpo_td043_spi_driver);
|
||||
|
||||
MODULE_AUTHOR("Gražvydas Ignotas <notasas@gmail.com>");
|
||||
MODULE_DESCRIPTION("TPO TD043MTEA1 LCD Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -322,4 +322,20 @@ struct panel_sharp_ls037v7dw01_platform_data {
|
|||
int ud_gpio;
|
||||
};
|
||||
|
||||
/**
|
||||
* panel-tpo-td043mtea1 platform data
|
||||
* @name: name for this display entity
|
||||
* @source: name of the display entity used as a video source
|
||||
* @data_lines: number of DPI datalines
|
||||
* @nreset_gpio: reset signal
|
||||
*/
|
||||
struct panel_tpo_td043mtea1_platform_data {
|
||||
const char *name;
|
||||
const char *source;
|
||||
|
||||
int data_lines;
|
||||
|
||||
int nreset_gpio;
|
||||
};
|
||||
|
||||
#endif /* __OMAP_PANEL_DATA_H */
|
||||
|
|
|
|||
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