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path: root/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
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Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c')
-rw-r--r--drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c513
1 files changed, 0 insertions, 513 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
deleted file mode 100644
index ce09217da597..000000000000
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
+++ /dev/null
@@ -1,513 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * TPO TD043MTEA1 Panel driver
- *
- * Author: Gražvydas Ignotas <notasas@gmail.com>
- * Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com>
- */
-
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-#include <linux/spi/spi.h>
-
-#include "../dss/omapdss.h"
-
-#define TPO_R02_MODE(x) ((x) & 7)
-#define TPO_R02_MODE_800x480 7
-#define TPO_R02_NCLK_RISING BIT(3)
-#define TPO_R02_HSYNC_HIGH BIT(4)
-#define TPO_R02_VSYNC_HIGH BIT(5)
-
-#define TPO_R03_NSTANDBY BIT(0)
-#define TPO_R03_EN_CP_CLK BIT(1)
-#define TPO_R03_EN_VGL_PUMP BIT(2)
-#define TPO_R03_EN_PWM BIT(3)
-#define TPO_R03_DRIVING_CAP_100 BIT(4)
-#define TPO_R03_EN_PRE_CHARGE BIT(6)
-#define TPO_R03_SOFTWARE_CTL BIT(7)
-
-#define TPO_R04_NFLIP_H BIT(0)
-#define TPO_R04_NFLIP_V BIT(1)
-#define TPO_R04_CP_CLK_FREQ_1H BIT(2)
-#define TPO_R04_VGL_FREQ_1H BIT(4)
-
-#define TPO_R03_VAL_NORMAL (TPO_R03_NSTANDBY | TPO_R03_EN_CP_CLK | \
- TPO_R03_EN_VGL_PUMP | TPO_R03_EN_PWM | \
- TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \
- TPO_R03_SOFTWARE_CTL)
-
-#define TPO_R03_VAL_STANDBY (TPO_R03_DRIVING_CAP_100 | \
- TPO_R03_EN_PRE_CHARGE | TPO_R03_SOFTWARE_CTL)
-
-static const u16 tpo_td043_def_gamma[12] = {
- 105, 315, 381, 431, 490, 537, 579, 686, 780, 837, 880, 1023
-};
-
-struct panel_drv_data {
- struct omap_dss_device dssdev;
-
- struct videomode vm;
-
- struct spi_device *spi;
- struct regulator *vcc_reg;
- struct gpio_desc *reset_gpio;
- u16 gamma[12];
- u32 mode;
- u32 vmirror:1;
- u32 powered_on:1;
- u32 spi_suspended:1;
- u32 power_on_resume:1;
-};
-
-static const struct videomode tpo_td043_vm = {
- .hactive = 800,
- .vactive = 480,
-
- .pixelclock = 36000000,
-
- .hsync_len = 1,
- .hfront_porch = 68,
- .hback_porch = 214,
-
- .vsync_len = 1,
- .vfront_porch = 39,
- .vback_porch = 34,
-
- .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW,
-};
-
-#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
-
-static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data)
-{
- struct spi_message m;
- struct spi_transfer xfer;
- u16 w;
- int r;
-
- spi_message_init(&m);
-
- memset(&xfer, 0, sizeof(xfer));
-
- w = ((u16)addr << 10) | (1 << 8) | data;
- xfer.tx_buf = &w;
- xfer.bits_per_word = 16;
- xfer.len = 2;
- spi_message_add_tail(&xfer, &m);
-
- r = spi_sync(spi, &m);
- if (r < 0)
- dev_warn(&spi->dev, "failed to write to LCD reg (%d)\n", r);
- return r;
-}
-
-static void tpo_td043_write_gamma(struct spi_device *spi, u16 gamma[12])
-{
- u8 i, val;
-
- /* gamma bits [9:8] */
- for (val = i = 0; i < 4; i++)
- val |= (gamma[i] & 0x300) >> ((i + 1) * 2);
- tpo_td043_write(spi, 0x11, val);
-
- for (val = i = 0; i < 4; i++)
- val |= (gamma[i+4] & 0x300) >> ((i + 1) * 2);
- tpo_td043_write(spi, 0x12, val);
-
- for (val = i = 0; i < 4; i++)
- val |= (gamma[i+8] & 0x300) >> ((i + 1) * 2);
- tpo_td043_write(spi, 0x13, val);
-
- /* gamma bits [7:0] */
- for (val = i = 0; i < 12; i++)
- tpo_td043_write(spi, 0x14 + i, gamma[i] & 0xff);
-}
-
-static int tpo_td043_write_mirror(struct spi_device *spi, bool h, bool v)
-{
- u8 reg4 = TPO_R04_NFLIP_H | TPO_R04_NFLIP_V |
- TPO_R04_CP_CLK_FREQ_1H | TPO_R04_VGL_FREQ_1H;
- if (h)
- reg4 &= ~TPO_R04_NFLIP_H;
- if (v)
- reg4 &= ~TPO_R04_NFLIP_V;
-
- return tpo_td043_write(spi, 4, reg4);
-}
-
-static ssize_t tpo_td043_vmirror_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
-
- return snprintf(buf, PAGE_SIZE, "%d\n", ddata->vmirror);
-}
-
-static ssize_t tpo_td043_vmirror_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
- int val;
- int ret;
-
- ret = kstrtoint(buf, 0, &val);
- if (ret < 0)
- return ret;
-
- val = !!val;
-
- ret = tpo_td043_write_mirror(ddata->spi, false, val);
- if (ret < 0)
- return ret;
-
- ddata->vmirror = val;
-
- return count;
-}
-
-static ssize_t tpo_td043_mode_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
-
- return snprintf(buf, PAGE_SIZE, "%d\n", ddata->mode);
-}
-
-static ssize_t tpo_td043_mode_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
- long val;
- int ret;
-
- ret = kstrtol(buf, 0, &val);
- if (ret != 0 || val & ~7)
- return -EINVAL;
-
- ddata->mode = val;
-
- val |= TPO_R02_NCLK_RISING;
- tpo_td043_write(ddata->spi, 2, val);
-
- return count;
-}
-
-static ssize_t tpo_td043_gamma_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
- ssize_t len = 0;
- int ret;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++) {
- ret = snprintf(buf + len, PAGE_SIZE - len, "%u ",
- ddata->gamma[i]);
- if (ret < 0)
- return ret;
- len += ret;
- }
- buf[len - 1] = '\n';
-
- return len;
-}
-
-static ssize_t tpo_td043_gamma_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dev);
- unsigned int g[12];
- int ret;
- int i;
-
- ret = sscanf(buf, "%u %u %u %u %u %u %u %u %u %u %u %u",
- &g[0], &g[1], &g[2], &g[3], &g[4], &g[5],
- &g[6], &g[7], &g[8], &g[9], &g[10], &g[11]);
-
- if (ret != 12)
- return -EINVAL;
-
- for (i = 0; i < 12; i++)
- ddata->gamma[i] = g[i];
-
- tpo_td043_write_gamma(ddata->spi, ddata->gamma);
-
- return count;
-}
-
-static DEVICE_ATTR(vmirror, S_IRUGO | S_IWUSR,
- tpo_td043_vmirror_show, tpo_td043_vmirror_store);
-static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
- tpo_td043_mode_show, tpo_td043_mode_store);
-static DEVICE_ATTR(gamma, S_IRUGO | S_IWUSR,
- tpo_td043_gamma_show, tpo_td043_gamma_store);
-
-static struct attribute *tpo_td043_attrs[] = {
- &dev_attr_vmirror.attr,
- &dev_attr_mode.attr,
- &dev_attr_gamma.attr,
- NULL,
-};
-
-static const struct attribute_group tpo_td043_attr_group = {
- .attrs = tpo_td043_attrs,
-};
-
-static int tpo_td043_power_on(struct panel_drv_data *ddata)
-{
- int r;
-
- if (ddata->powered_on)
- return 0;
-
- r = regulator_enable(ddata->vcc_reg);
- if (r != 0)
- return r;
-
- /* wait for panel to stabilize */
- msleep(160);
-
- gpiod_set_value(ddata->reset_gpio, 0);
-
- tpo_td043_write(ddata->spi, 2,
- TPO_R02_MODE(ddata->mode) | TPO_R02_NCLK_RISING);
- tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_NORMAL);
- tpo_td043_write(ddata->spi, 0x20, 0xf0);
- tpo_td043_write(ddata->spi, 0x21, 0xf0);
- tpo_td043_write_mirror(ddata->spi, false, ddata->vmirror);
- tpo_td043_write_gamma(ddata->spi, ddata->gamma);
-
- ddata->powered_on = 1;
- return 0;
-}
-
-static void tpo_td043_power_off(struct panel_drv_data *ddata)
-{
- if (!ddata->powered_on)
- return;
-
- tpo_td043_write(ddata->spi, 3,
- TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM);
-
- gpiod_set_value(ddata->reset_gpio, 1);
-
- /* wait for at least 2 vsyncs before cutting off power */
- msleep(50);
-
- tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_STANDBY);
-
- regulator_disable(ddata->vcc_reg);
-
- ddata->powered_on = 0;
-}
-
-static int tpo_td043_connect(struct omap_dss_device *src,
- struct omap_dss_device *dst)
-{
- return 0;
-}
-
-static void tpo_td043_disconnect(struct omap_dss_device *src,
- struct omap_dss_device *dst)
-{
-}
-
-static void tpo_td043_enable(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = to_panel_data(dssdev);
- int r;
-
- /*
- * If we are resuming from system suspend, SPI clocks might not be
- * enabled yet, so we'll program the LCD from SPI PM resume callback.
- */
- if (!ddata->spi_suspended) {
- r = tpo_td043_power_on(ddata);
- if (r) {
- dev_err(&ddata->spi->dev, "%s: power on failed (%d)\n",
- __func__, r);
- return;
- }
- }
-}
-
-static void tpo_td043_disable(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = to_panel_data(dssdev);
-
- if (!ddata->spi_suspended)
- tpo_td043_power_off(ddata);
-}
-
-static int tpo_td043_get_modes(struct omap_dss_device *dssdev,
- struct drm_connector *connector)
-{
- struct panel_drv_data *ddata = to_panel_data(dssdev);
-
- return omapdss_display_get_modes(connector, &ddata->vm);
-}
-
-static const struct omap_dss_device_ops tpo_td043_ops = {
- .connect = tpo_td043_connect,
- .disconnect = tpo_td043_disconnect,
-
- .enable = tpo_td043_enable,
- .disable = tpo_td043_disable,
-
- .get_modes = tpo_td043_get_modes,
-};
-
-static int tpo_td043_probe(struct spi_device *spi)
-{
- struct panel_drv_data *ddata;
- struct omap_dss_device *dssdev;
- struct gpio_desc *gpio;
- 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;
-
- 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");
- return PTR_ERR(ddata->vcc_reg);
- }
-
- gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
- if (IS_ERR(gpio)) {
- dev_err(&spi->dev, "failed to get reset gpio\n");
- return PTR_ERR(gpio);
- }
-
- ddata->reset_gpio = gpio;
-
- r = sysfs_create_group(&spi->dev.kobj, &tpo_td043_attr_group);
- if (r) {
- dev_err(&spi->dev, "failed to create sysfs files\n");
- return r;
- }
-
- ddata->vm = tpo_td043_vm;
-
- dssdev = &ddata->dssdev;
- dssdev->dev = &spi->dev;
- dssdev->ops = &tpo_td043_ops;
- dssdev->type = OMAP_DISPLAY_TYPE_DPI;
- dssdev->display = true;
- dssdev->owner = THIS_MODULE;
- dssdev->of_ports = BIT(0);
- dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES;
-
- /*
- * Note: According to the panel documentation:
- * SYNC needs to be driven on the FALLING edge
- */
- dssdev->bus_flags = DRM_BUS_FLAG_DE_HIGH
- | DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE
- | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE;
-
- omapdss_display_init(dssdev);
- omapdss_device_register(dssdev);
-
- return 0;
-}
-
-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;
-
- dev_dbg(&ddata->spi->dev, "%s\n", __func__);
-
- omapdss_device_unregister(dssdev);
-
- if (omapdss_device_is_enabled(dssdev))
- tpo_td043_disable(dssdev);
-
- 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 const struct of_device_id tpo_td043_of_match[] = {
- { .compatible = "omapdss,tpo,td043mtea1", },
- {},
-};
-
-MODULE_DEVICE_TABLE(of, tpo_td043_of_match);
-
-static struct spi_driver tpo_td043_spi_driver = {
- .driver = {
- .name = "panel-tpo-td043mtea1",
- .pm = &tpo_td043_spi_pm,
- .of_match_table = tpo_td043_of_match,
- .suppress_bind_attrs = true,
- },
- .probe = tpo_td043_probe,
- .remove = tpo_td043_remove,
-};
-
-module_spi_driver(tpo_td043_spi_driver);
-
-MODULE_ALIAS("spi:tpo,td043mtea1");
-MODULE_AUTHOR("Gražvydas Ignotas <notasas@gmail.com>");
-MODULE_DESCRIPTION("TPO TD043MTEA1 LCD Driver");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-11 08:22:52 +0000