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Diffstat (limited to 'ANDROID_3.4.5/drivers/video/omap/lcd_mipid.c')
-rw-r--r--ANDROID_3.4.5/drivers/video/omap/lcd_mipid.c615
1 files changed, 0 insertions, 615 deletions
diff --git a/ANDROID_3.4.5/drivers/video/omap/lcd_mipid.c b/ANDROID_3.4.5/drivers/video/omap/lcd_mipid.c
deleted file mode 100644
index e3880c4a..00000000
--- a/ANDROID_3.4.5/drivers/video/omap/lcd_mipid.c
+++ /dev/null
@@ -1,615 +0,0 @@
-/*
- * LCD driver for MIPI DBI-C / DCS compatible LCDs
- *
- * Copyright (C) 2006 Nokia Corporation
- * Author: Imre Deak <imre.deak@nokia.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/spi/spi.h>
-#include <linux/module.h>
-
-#include <plat/lcd_mipid.h>
-
-#include "omapfb.h"
-
-#define MIPID_MODULE_NAME "lcd_mipid"
-
-#define MIPID_CMD_READ_DISP_ID 0x04
-#define MIPID_CMD_READ_RED 0x06
-#define MIPID_CMD_READ_GREEN 0x07
-#define MIPID_CMD_READ_BLUE 0x08
-#define MIPID_CMD_READ_DISP_STATUS 0x09
-#define MIPID_CMD_RDDSDR 0x0F
-#define MIPID_CMD_SLEEP_IN 0x10
-#define MIPID_CMD_SLEEP_OUT 0x11
-#define MIPID_CMD_DISP_OFF 0x28
-#define MIPID_CMD_DISP_ON 0x29
-
-#define MIPID_ESD_CHECK_PERIOD msecs_to_jiffies(5000)
-
-#define to_mipid_device(p) container_of(p, struct mipid_device, \
- panel)
-struct mipid_device {
- int enabled;
- int revision;
- unsigned int saved_bklight_level;
- unsigned long hw_guard_end; /* next value of jiffies
- when we can issue the
- next sleep in/out command */
- unsigned long hw_guard_wait; /* max guard time in jiffies */
-
- struct omapfb_device *fbdev;
- struct spi_device *spi;
- struct mutex mutex;
- struct lcd_panel panel;
-
- struct workqueue_struct *esd_wq;
- struct delayed_work esd_work;
- void (*esd_check)(struct mipid_device *m);
-};
-
-static void mipid_transfer(struct mipid_device *md, int cmd, const u8 *wbuf,
- int wlen, u8 *rbuf, int rlen)
-{
- struct spi_message m;
- struct spi_transfer *x, xfer[4];
- u16 w;
- int r;
-
- BUG_ON(md->spi == NULL);
-
- spi_message_init(&m);
-
- memset(xfer, 0, sizeof(xfer));
- x = &xfer[0];
-
- cmd &= 0xff;
- x->tx_buf = &cmd;
- x->bits_per_word = 9;
- x->len = 2;
- spi_message_add_tail(x, &m);
-
- if (wlen) {
- x++;
- x->tx_buf = wbuf;
- x->len = wlen;
- x->bits_per_word = 9;
- spi_message_add_tail(x, &m);
- }
-
- if (rlen) {
- x++;
- x->rx_buf = &w;
- x->len = 1;
- spi_message_add_tail(x, &m);
-
- if (rlen > 1) {
- /* Arrange for the extra clock before the first
- * data bit.
- */
- x->bits_per_word = 9;
- x->len = 2;
-
- x++;
- x->rx_buf = &rbuf[1];
- x->len = rlen - 1;
- spi_message_add_tail(x, &m);
- }
- }
-
- r = spi_sync(md->spi, &m);
- if (r < 0)
- dev_dbg(&md->spi->dev, "spi_sync %d\n", r);
-
- if (rlen)
- rbuf[0] = w & 0xff;
-}
-
-static inline void mipid_cmd(struct mipid_device *md, int cmd)
-{
- mipid_transfer(md, cmd, NULL, 0, NULL, 0);
-}
-
-static inline void mipid_write(struct mipid_device *md,
- int reg, const u8 *buf, int len)
-{
- mipid_transfer(md, reg, buf, len, NULL, 0);
-}
-
-static inline void mipid_read(struct mipid_device *md,
- int reg, u8 *buf, int len)
-{
- mipid_transfer(md, reg, NULL, 0, buf, len);
-}
-
-static void set_data_lines(struct mipid_device *md, int data_lines)
-{
- u16 par;
-
- switch (data_lines) {
- case 16:
- par = 0x150;
- break;
- case 18:
- par = 0x160;
- break;
- case 24:
- par = 0x170;
- break;
- }
- mipid_write(md, 0x3a, (u8 *)&par, 2);
-}
-
-static void send_init_string(struct mipid_device *md)
-{
- u16 initpar[] = { 0x0102, 0x0100, 0x0100 };
-
- mipid_write(md, 0xc2, (u8 *)initpar, sizeof(initpar));
- set_data_lines(md, md->panel.data_lines);
-}
-
-static void hw_guard_start(struct mipid_device *md, int guard_msec)
-{
- md->hw_guard_wait = msecs_to_jiffies(guard_msec);
- md->hw_guard_end = jiffies + md->hw_guard_wait;
-}
-
-static void hw_guard_wait(struct mipid_device *md)
-{
- unsigned long wait = md->hw_guard_end - jiffies;
-
- if ((long)wait > 0 && wait <= md->hw_guard_wait) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(wait);
- }
-}
-
-static void set_sleep_mode(struct mipid_device *md, int on)
-{
- int cmd, sleep_time = 50;
-
- if (on)
- cmd = MIPID_CMD_SLEEP_IN;
- else
- cmd = MIPID_CMD_SLEEP_OUT;
- hw_guard_wait(md);
- mipid_cmd(md, cmd);
- hw_guard_start(md, 120);
- /*
- * When we enable the panel, it seems we _have_ to sleep
- * 120 ms before sending the init string. When disabling the
- * panel we'll sleep for the duration of 2 frames, so that the
- * controller can still provide the PCLK,HS,VS signals.
- */
- if (!on)
- sleep_time = 120;
- msleep(sleep_time);
-}
-
-static void set_display_state(struct mipid_device *md, int enabled)
-{
- int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
-
- mipid_cmd(md, cmd);
-}
-
-static int mipid_set_bklight_level(struct lcd_panel *panel, unsigned int level)
-{
- struct mipid_device *md = to_mipid_device(panel);
- struct mipid_platform_data *pd = md->spi->dev.platform_data;
-
- if (pd->get_bklight_max == NULL || pd->set_bklight_level == NULL)
- return -ENODEV;
- if (level > pd->get_bklight_max(pd))
- return -EINVAL;
- if (!md->enabled) {
- md->saved_bklight_level = level;
- return 0;
- }
- pd->set_bklight_level(pd, level);
-
- return 0;
-}
-
-static unsigned int mipid_get_bklight_level(struct lcd_panel *panel)
-{
- struct mipid_device *md = to_mipid_device(panel);
- struct mipid_platform_data *pd = md->spi->dev.platform_data;
-
- if (pd->get_bklight_level == NULL)
- return -ENODEV;
- return pd->get_bklight_level(pd);
-}
-
-static unsigned int mipid_get_bklight_max(struct lcd_panel *panel)
-{
- struct mipid_device *md = to_mipid_device(panel);
- struct mipid_platform_data *pd = md->spi->dev.platform_data;
-
- if (pd->get_bklight_max == NULL)
- return -ENODEV;
-
- return pd->get_bklight_max(pd);
-}
-
-static unsigned long mipid_get_caps(struct lcd_panel *panel)
-{
- return OMAPFB_CAPS_SET_BACKLIGHT;
-}
-
-static u16 read_first_pixel(struct mipid_device *md)
-{
- u16 pixel;
- u8 red, green, blue;
-
- mutex_lock(&md->mutex);
- mipid_read(md, MIPID_CMD_READ_RED, &red, 1);
- mipid_read(md, MIPID_CMD_READ_GREEN, &green, 1);
- mipid_read(md, MIPID_CMD_READ_BLUE, &blue, 1);
- mutex_unlock(&md->mutex);
-
- switch (md->panel.data_lines) {
- case 16:
- pixel = ((red >> 1) << 11) | (green << 5) | (blue >> 1);
- break;
- case 24:
- /* 24 bit -> 16 bit */
- pixel = ((red >> 3) << 11) | ((green >> 2) << 5) |
- (blue >> 3);
- break;
- default:
- pixel = 0;
- BUG();
- }
-
- return pixel;
-}
-
-static int mipid_run_test(struct lcd_panel *panel, int test_num)
-{
- struct mipid_device *md = to_mipid_device(panel);
- static const u16 test_values[4] = {
- 0x0000, 0xffff, 0xaaaa, 0x5555,
- };
- int i;
-
- if (test_num != MIPID_TEST_RGB_LINES)
- return MIPID_TEST_INVALID;
-
- for (i = 0; i < ARRAY_SIZE(test_values); i++) {
- int delay;
- unsigned long tmo;
-
- omapfb_write_first_pixel(md->fbdev, test_values[i]);
- tmo = jiffies + msecs_to_jiffies(100);
- delay = 25;
- while (1) {
- u16 pixel;
-
- msleep(delay);
- pixel = read_first_pixel(md);
- if (pixel == test_values[i])
- break;
- if (time_after(jiffies, tmo)) {
- dev_err(&md->spi->dev,
- "MIPI LCD RGB I/F test failed: "
- "expecting %04x, got %04x\n",
- test_values[i], pixel);
- return MIPID_TEST_FAILED;
- }
- delay = 10;
- }
- }
-
- return 0;
-}
-
-static void ls041y3_esd_recover(struct mipid_device *md)
-{
- dev_err(&md->spi->dev, "performing LCD ESD recovery\n");
- set_sleep_mode(md, 1);
- set_sleep_mode(md, 0);
-}
-
-static void ls041y3_esd_check_mode1(struct mipid_device *md)
-{
- u8 state1, state2;
-
- mipid_read(md, MIPID_CMD_RDDSDR, &state1, 1);
- set_sleep_mode(md, 0);
- mipid_read(md, MIPID_CMD_RDDSDR, &state2, 1);
- dev_dbg(&md->spi->dev, "ESD mode 1 state1 %02x state2 %02x\n",
- state1, state2);
- /* Each sleep out command will trigger a self diagnostic and flip
- * Bit6 if the test passes.
- */
- if (!((state1 ^ state2) & (1 << 6)))
- ls041y3_esd_recover(md);
-}
-
-static void ls041y3_esd_check_mode2(struct mipid_device *md)
-{
- int i;
- u8 rbuf[2];
- static const struct {
- int cmd;
- int wlen;
- u16 wbuf[3];
- } *rd, rd_ctrl[7] = {
- { 0xb0, 4, { 0x0101, 0x01fe, } },
- { 0xb1, 4, { 0x01de, 0x0121, } },
- { 0xc2, 4, { 0x0100, 0x0100, } },
- { 0xbd, 2, { 0x0100, } },
- { 0xc2, 4, { 0x01fc, 0x0103, } },
- { 0xb4, 0, },
- { 0x00, 0, },
- };
-
- rd = rd_ctrl;
- for (i = 0; i < 3; i++, rd++)
- mipid_write(md, rd->cmd, (u8 *)rd->wbuf, rd->wlen);
-
- udelay(10);
- mipid_read(md, rd->cmd, rbuf, 2);
- rd++;
-
- for (i = 0; i < 3; i++, rd++) {
- udelay(10);
- mipid_write(md, rd->cmd, (u8 *)rd->wbuf, rd->wlen);
- }
-
- dev_dbg(&md->spi->dev, "ESD mode 2 state %02x\n", rbuf[1]);
- if (rbuf[1] == 0x00)
- ls041y3_esd_recover(md);
-}
-
-static void ls041y3_esd_check(struct mipid_device *md)
-{
- ls041y3_esd_check_mode1(md);
- if (md->revision >= 0x88)
- ls041y3_esd_check_mode2(md);
-}
-
-static void mipid_esd_start_check(struct mipid_device *md)
-{
- if (md->esd_check != NULL)
- queue_delayed_work(md->esd_wq, &md->esd_work,
- MIPID_ESD_CHECK_PERIOD);
-}
-
-static void mipid_esd_stop_check(struct mipid_device *md)
-{
- if (md->esd_check != NULL)
- cancel_delayed_work_sync(&md->esd_work);
-}
-
-static void mipid_esd_work(struct work_struct *work)
-{
- struct mipid_device *md = container_of(work, struct mipid_device,
- esd_work.work);
-
- mutex_lock(&md->mutex);
- md->esd_check(md);
- mutex_unlock(&md->mutex);
- mipid_esd_start_check(md);
-}
-
-static int mipid_enable(struct lcd_panel *panel)
-{
- struct mipid_device *md = to_mipid_device(panel);
-
- mutex_lock(&md->mutex);
-
- if (md->enabled) {
- mutex_unlock(&md->mutex);
- return 0;
- }
- set_sleep_mode(md, 0);
- md->enabled = 1;
- send_init_string(md);
- set_display_state(md, 1);
- mipid_set_bklight_level(panel, md->saved_bklight_level);
- mipid_esd_start_check(md);
-
- mutex_unlock(&md->mutex);
- return 0;
-}
-
-static void mipid_disable(struct lcd_panel *panel)
-{
- struct mipid_device *md = to_mipid_device(panel);
-
- /*
- * A final ESD work might be called before returning,
- * so do this without holding the lock.
- */
- mipid_esd_stop_check(md);
- mutex_lock(&md->mutex);
-
- if (!md->enabled) {
- mutex_unlock(&md->mutex);
- return;
- }
- md->saved_bklight_level = mipid_get_bklight_level(panel);
- mipid_set_bklight_level(panel, 0);
- set_display_state(md, 0);
- set_sleep_mode(md, 1);
- md->enabled = 0;
-
- mutex_unlock(&md->mutex);
-}
-
-static int panel_enabled(struct mipid_device *md)
-{
- u32 disp_status;
- int enabled;
-
- mipid_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4);
- disp_status = __be32_to_cpu(disp_status);
- enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
- dev_dbg(&md->spi->dev,
- "LCD panel %senabled by bootloader (status 0x%04x)\n",
- enabled ? "" : "not ", disp_status);
- return enabled;
-}
-
-static int mipid_init(struct lcd_panel *panel,
- struct omapfb_device *fbdev)
-{
- struct mipid_device *md = to_mipid_device(panel);
-
- md->fbdev = fbdev;
- md->esd_wq = create_singlethread_workqueue("mipid_esd");
- if (md->esd_wq == NULL) {
- dev_err(&md->spi->dev, "can't create ESD workqueue\n");
- return -ENOMEM;
- }
- INIT_DELAYED_WORK(&md->esd_work, mipid_esd_work);
- mutex_init(&md->mutex);
-
- md->enabled = panel_enabled(md);
-
- if (md->enabled)
- mipid_esd_start_check(md);
- else
- md->saved_bklight_level = mipid_get_bklight_level(panel);
-
- return 0;
-}
-
-static void mipid_cleanup(struct lcd_panel *panel)
-{
- struct mipid_device *md = to_mipid_device(panel);
-
- if (md->enabled)
- mipid_esd_stop_check(md);
- destroy_workqueue(md->esd_wq);
-}
-
-static struct lcd_panel mipid_panel = {
- .config = OMAP_LCDC_PANEL_TFT,
-
- .bpp = 16,
- .x_res = 800,
- .y_res = 480,
- .pixel_clock = 21940,
- .hsw = 50,
- .hfp = 20,
- .hbp = 15,
- .vsw = 2,
- .vfp = 1,
- .vbp = 3,
-
- .init = mipid_init,
- .cleanup = mipid_cleanup,
- .enable = mipid_enable,
- .disable = mipid_disable,
- .get_caps = mipid_get_caps,
- .set_bklight_level = mipid_set_bklight_level,
- .get_bklight_level = mipid_get_bklight_level,
- .get_bklight_max = mipid_get_bklight_max,
- .run_test = mipid_run_test,
-};
-
-static int mipid_detect(struct mipid_device *md)
-{
- struct mipid_platform_data *pdata;
- u8 display_id[3];
-
- pdata = md->spi->dev.platform_data;
- if (pdata == NULL) {
- dev_err(&md->spi->dev, "missing platform data\n");
- return -ENOENT;
- }
-
- mipid_read(md, MIPID_CMD_READ_DISP_ID, display_id, 3);
- dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n",
- display_id[0], display_id[1], display_id[2]);
-
- switch (display_id[0]) {
- case 0x45:
- md->panel.name = "lph8923";
- break;
- case 0x83:
- md->panel.name = "ls041y3";
- md->esd_check = ls041y3_esd_check;
- break;
- default:
- md->panel.name = "unknown";
- dev_err(&md->spi->dev, "invalid display ID\n");
- return -ENODEV;
- }
-
- md->revision = display_id[1];
- md->panel.data_lines = pdata->data_lines;
- pr_info("omapfb: %s rev %02x LCD detected, %d data lines\n",
- md->panel.name, md->revision, md->panel.data_lines);
-
- return 0;
-}
-
-static int mipid_spi_probe(struct spi_device *spi)
-{
- struct mipid_device *md;
- int r;
-
- md = kzalloc(sizeof(*md), GFP_KERNEL);
- if (md == NULL) {
- dev_err(&spi->dev, "out of memory\n");
- return -ENOMEM;
- }
-
- spi->mode = SPI_MODE_0;
- md->spi = spi;
- dev_set_drvdata(&spi->dev, md);
- md->panel = mipid_panel;
-
- r = mipid_detect(md);
- if (r < 0)
- return r;
-
- omapfb_register_panel(&md->panel);
-
- return 0;
-}
-
-static int mipid_spi_remove(struct spi_device *spi)
-{
- struct mipid_device *md = dev_get_drvdata(&spi->dev);
-
- mipid_disable(&md->panel);
- kfree(md);
-
- return 0;
-}
-
-static struct spi_driver mipid_spi_driver = {
- .driver = {
- .name = MIPID_MODULE_NAME,
- .owner = THIS_MODULE,
- },
- .probe = mipid_spi_probe,
- .remove = __devexit_p(mipid_spi_remove),
-};
-
-module_spi_driver(mipid_spi_driver);
-
-MODULE_DESCRIPTION("MIPI display driver");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-12-21 01:56:26 +0000