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/*
* Source for:
* Cypress TrueTouch(TM) Standard Product touchscreen driver.
*
* Copyright (C) 2009-2011 Cypress Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2, and only version 2, as published by the
* Free Software Foundation.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Cypress reserves the right to make changes without further notice
* to the materials described herein. Cypress does not assume any
* liability arising out of the application described herein.
*
* Contact Cypress Semiconductor at www.cypress.com
*
*/
/*
************************************************************************
* Compiled image bootloader functions
************************************************************************
*/
#include "cyttsp_fw.h"
#define CY_BL_PAGE_SIZE 16
#define CY_BL_NUM_PAGES 5
#define CY_MAX_DATA_LEN (CY_BL_PAGE_SIZE * 2)
/* Timeout timer */
static int cyttsp_check_polling(struct cyttsp *ts)
{
return ts->platform_data->use_timer;
}
static void cyttsp_to_timer(unsigned long handle)
{
struct cyttsp *ts = (struct cyttsp *)handle;
DBG(printk(KERN_INFO"%s: TTSP timeout timer event!\n", __func__);)
ts->to_timeout = true;
return;
}
static void cyttsp_setup_to_timer(struct cyttsp *ts)
{
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
setup_timer(&ts->to_timer, cyttsp_to_timer, (unsigned long) ts);
}
static void cyttsp_kill_to_timer(struct cyttsp *ts)
{
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
del_timer(&ts->to_timer);
}
static void cyttsp_start_to_timer(struct cyttsp *ts, int ms)
{
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
ts->to_timeout = false;
mod_timer(&ts->to_timer, jiffies + ms);
}
static bool cyttsp_timeout(struct cyttsp *ts)
{
if (cyttsp_check_polling(ts))
return false;
else
return ts->to_timeout;
}
static void cyttsp_set_bl_ready(struct cyttsp *ts, bool set)
{
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
ts->bl_ready = set;
DBG(printk(KERN_INFO"%s: bl_ready=%d\n", __func__, (int)ts->bl_ready);)
}
static bool cyttsp_check_bl_ready(struct cyttsp *ts)
{
if (cyttsp_check_polling(ts))
return true;
else
return ts->bl_ready;
}
static bool cyttsp_bl_err_status(struct cyttsp *ts)
{
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
return (((ts->bl_data.bl_status == 0x10) &&
(ts->bl_data.bl_error == 0x20)) ||
((ts->bl_data.bl_status == 0x11) &&
(ts->bl_data.bl_error == 0x20)));
}
static bool cyttsp_wait_bl_ready(struct cyttsp *ts,
int pre_delay, int loop_delay, int max_try,
bool (*done)(struct cyttsp *ts))
{
int tries;
bool rdy = false, tmo = false;
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
DBG(printk(KERN_INFO"%s: pre-dly=%d loop-dly=%d, max-try=%d\n",
__func__, pre_delay, loop_delay, max_try);)
tries = 0;
ts->bl_data.bl_file = 0;
ts->bl_data.bl_status = 0;
ts->bl_data.bl_error = 0;
if (cyttsp_check_polling(ts)) {
msleep(pre_delay);
do {
msleep(abs(loop_delay));
cyttsp_load_bl_regs(ts);
} while (!done(ts) &&
tries++ < max_try);
DBG(printk(KERN_INFO"%s: polling mode tries=%d\n",
__func__, tries);)
} else {
cyttsp_start_to_timer(ts, abs(loop_delay) * max_try);
while (!rdy && !tmo) {
rdy = cyttsp_check_bl_ready(ts);
tmo = cyttsp_timeout(ts);
if (loop_delay < 0)
udelay(abs(loop_delay));
else
msleep(abs(loop_delay));
tries++;
}
DBG2(printk(KERN_INFO"%s: irq mode tries=%d rdy=%d tmo=%d\n",
__func__, tries, (int)rdy, (int)tmo);)
cyttsp_load_bl_regs(ts);
}
if (tries >= max_try || tmo)
return true; /* timeout */
else
return false;
}
static int cyttsp_wr_blk_chunks(struct cyttsp *ts, u8 cmd,
u8 length, const u8 *values)
{
int retval = 0;
int block = 1;
bool timeout;
u8 dataray[CY_MAX_DATA_LEN];
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
/* first page already includes the bl page offset */
memcpy(dataray, values, CY_BL_PAGE_SIZE + 1);
cyttsp_set_bl_ready(ts, false);
retval = ttsp_write_block_data(ts, cmd, CY_BL_PAGE_SIZE + 1, dataray);
values += CY_BL_PAGE_SIZE + 1;
length -= CY_BL_PAGE_SIZE + 1;
if (retval)
return retval;
/* remaining blocks require bl page offset stuffing */
while (length && (block < CY_BL_NUM_PAGES) && !(retval < 0)) {
dataray[0] = CY_BL_PAGE_SIZE * block;
timeout = cyttsp_wait_bl_ready(ts,
1, -100, 100, cyttsp_bl_err_status);
if (timeout)
return -EIO;
memcpy(&dataray[1], values, length >= CY_BL_PAGE_SIZE ?
CY_BL_PAGE_SIZE : length);
cyttsp_set_bl_ready(ts, false);
retval = ttsp_write_block_data(ts, cmd,
length >= CY_BL_PAGE_SIZE ?
CY_BL_PAGE_SIZE + 1 : length + 1, dataray);
values += CY_BL_PAGE_SIZE;
length = length >= CY_BL_PAGE_SIZE ?
length - CY_BL_PAGE_SIZE : 0;
block++;
}
return retval;
}
static int cyttsp_load_app(struct cyttsp *ts)
{
int retval = 0;
int rec;
bool timeout;
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
printk(KERN_INFO "%s: "
"load file - tver=0x%02X%02X a_id=0x%02X%02X aver=0x%02X%02X\n",
__func__,
cyttsp_fw_tts_verh, cyttsp_fw_tts_verl,
cyttsp_fw_app_idh, cyttsp_fw_app_idl,
cyttsp_fw_app_verh, cyttsp_fw_app_verl);
/* download new TTSP Application to the Bootloader */
rec = 0;
/* send bootload initiation command */
printk(KERN_INFO"%s: Send BL Enter\n", __func__);
cyttsp_set_bl_ready(ts, false);
retval = ttsp_write_block_data(ts, CY_REG_BASE,
cyttsp_fw[rec].Length, cyttsp_fw[rec].Block);
rec++;
if (retval)
return retval;
timeout = cyttsp_wait_bl_ready(ts, 1, 100, 100, cyttsp_bl_err_status);
DBG(printk(KERN_INFO "%s: BL ENTER f=%02X s=%02X e=%02X t=%d\n",
__func__,
ts->bl_data.bl_file, ts->bl_data.bl_status,
ts->bl_data.bl_error, timeout);)
if (timeout)
goto loader_exit;
/* send bootload firmware load blocks */
printk(KERN_INFO"%s: Send BL Blocks\n", __func__);
while (cyttsp_fw[rec].Command == CY_BL_WRITE_BLK) {
DBG2(printk(KERN_INFO "%s:"
"BL DNLD Rec=% 3d Len=% 3d Addr=%04X\n",
__func__,
cyttsp_fw[rec].Record, cyttsp_fw[rec].Length,
cyttsp_fw[rec].Address);
)
retval = cyttsp_wr_blk_chunks(ts, CY_REG_BASE,
cyttsp_fw[rec].Length, cyttsp_fw[rec].Block);
if (retval < 0) {
DBG(printk(KERN_INFO "%s:"
"BL fail Rec=%3d retval=%d\n",
__func__,
cyttsp_fw[rec].Record, retval);
)
break;
} else {
cyttsp_wait_bl_ready(ts, 10, 1, 1000,
cyttsp_bl_err_status);
DBG(printk(KERN_INFO "%s: BL _LOAD "
"f=%02X s=%02X e=%02X\n",
__func__,
ts->bl_data.bl_file, ts->bl_data.bl_status,
ts->bl_data.bl_error);)
}
rec++;
}
if (retval < 0)
goto loader_exit;
/* send bootload terminate command */
printk(KERN_INFO"%s: Send BL Terminate\n", __func__);
cyttsp_set_bl_ready(ts, false);
retval = ttsp_write_block_data(ts, CY_REG_BASE,
cyttsp_fw[rec].Length, cyttsp_fw[rec].Block);
if (retval < 0)
goto loader_exit;
else
cyttsp_wait_bl_ready(ts, 1, 100, 100, cyttsp_bl_err_status);
loader_exit:
/* reset TTSP Device back to bootloader mode */
retval = cyttsp_soft_reset(ts);
return retval;
}
static int cyttsp_loader(struct cyttsp *ts)
{
int retval;
DBG(printk(KERN_INFO"%s: Enter\n", __func__);)
retval = cyttsp_load_bl_regs(ts);
if (retval < 0)
return retval;
printk(KERN_INFO "%s:"
"blttsp=0x%02X%02X flttsp=0x%02X%02X force=%d\n",
__func__,
ts->bl_data.ttspver_hi, ts->bl_data.ttspver_lo,
cyttsp_fw_tts_verh, cyttsp_fw_tts_verl,
ts->platform_data->use_force_fw_update);
printk(KERN_INFO "%s:"
"blappid=0x%02X%02X flappid=0x%02X%02X\n",
__func__,
ts->bl_data.appid_hi, ts->bl_data.appid_lo,
cyttsp_fw_app_idh, cyttsp_fw_app_idl);
printk(KERN_INFO "%s:"
"blappver=0x%02X%02X flappver=0x%02X%02X\n",
__func__,
ts->bl_data.appver_hi, ts->bl_data.appver_lo,
cyttsp_fw_app_verh, cyttsp_fw_app_verl);
printk(KERN_INFO "%s:"
"blcid=0x%02X%02X%02X flcid=0x%02X%02X%02X\n",
__func__,
ts->bl_data.cid_0, ts->bl_data.cid_1, ts->bl_data.cid_2,
cyttsp_fw_cid_0, cyttsp_fw_cid_1, cyttsp_fw_cid_2);
if (CY_DIFF(ts->bl_data.ttspver_hi, cyttsp_fw_tts_verh) ||
CY_DIFF(ts->bl_data.ttspver_lo, cyttsp_fw_tts_verl) ||
CY_DIFF(ts->bl_data.appid_hi, cyttsp_fw_app_idh) ||
CY_DIFF(ts->bl_data.appid_lo, cyttsp_fw_app_idl) ||
CY_DIFF(ts->bl_data.appver_hi, cyttsp_fw_app_verh) ||
CY_DIFF(ts->bl_data.appver_lo, cyttsp_fw_app_verl) ||
CY_DIFF(ts->bl_data.cid_0, cyttsp_fw_cid_0) ||
CY_DIFF(ts->bl_data.cid_1, cyttsp_fw_cid_1) ||
CY_DIFF(ts->bl_data.cid_2, cyttsp_fw_cid_2) ||
ts->platform_data->use_force_fw_update) {
/* load new app into TTSP Device */
cyttsp_setup_to_timer(ts);
ts->platform_data->power_state = CY_LDR_STATE;
retval = cyttsp_load_app(ts);
cyttsp_kill_to_timer(ts);
} else {
/* firmware file is a match with firmware in the TTSP device */
DBG(printk(KERN_INFO "%s: FW matches - no loader\n", __func__);)
}
if (retval < 0)
return retval;
return retval;
}
|
