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sec_mmi: enable panel mappings

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Both panel suppliers: BOE and CSOT are changing Tx/Rx layout while
switching from EVT to DVT revision of HW. LSI provides no facility
in their firmware to distinguish HW variants. Thus driver will be
matching panel id and version in chosen node with id and version
for EVT provided as a mapping table in LSI device tree.

Change-Id: I265caced054f19ab2f985bf798dd169e09097fa0
Signed-off-by: Konstantin Makariev <hcv867@motorola.com>
Reviewed-on: https://gerrit.mot.com/1406669
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Konstantin Makariev <kmakariev@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Konstantin Makariev 2019-08-20 15:19:27 -05:00 • committed by Konstantin Makariev
commit b4c2d1596c
1 changed files with 65 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

73
drivers/input/touchscreen/sec_mmi/sec_ts_mmi.c
View file

@ -11,8 +11,6 @@
* GNU General Public License for more details.
*/
#define DEBUG 511
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
@ -278,6 +276,8 @@ static void sec_mmi_ps_work(struct work_struct *work)
if (cval != mode)
sec_ts_set_charger(ts, data->ps_is_present);
else
dev_dbg(DEV_TS, "%s: charger mode already %d\n", __func__, cval);
}
static int sec_mmi_ps_notify_callback(struct notifier_block *self,
@ -315,7 +315,7 @@ static int sec_mmi_ps_notify_callback(struct notifier_block *self,
static int sec_mmi_dt(struct sec_mmi_data *data)
{
struct device *dev = &data->i2c_client->dev;
struct device_node *np = dev->of_node;
struct device_node *chosen, *np = dev->of_node;
if (!of_property_read_string(np, "sec,class-entry-name", &data->class_entry_name))
dev_info(DEV_MMI, "%s: class-entry-name property %s\n",
@ -348,22 +348,79 @@ static int sec_mmi_dt(struct sec_mmi_data *data)
}
}
np = of_find_node_by_name(NULL, "chosen");
if (np) {
chosen = of_find_node_by_name(NULL, "chosen");
if (chosen) {
struct device_node *child;
const char *supplier;
char *s, *d;
int rc;
u64 panel_ver, panel_id;
rc = of_property_read_string(chosen, "mmi,panel_name",
(const char **)&supplier);
if (rc) {
dev_err(DEV_MMI, "%s: cannot read mmi,panel_name %d\n",
__func__, rc);
goto done;
}
dev_dbg(DEV_MMI, "%s: mmi,panel_name %s\n", __func__, supplier);
of_property_read_string(np, "mmi,panel_name", (const char **)&supplier);
/* skip dsi_ part */
s = (char *)supplier + 4;
d = data->panel_supplier;
while (*s != '_') *d++ = *s++;
dev_info(DEV_MMI, "%s: panel-supplier %s\n",
__func__, data->panel_supplier);
rc = of_property_read_u64(chosen, "mmi,panel_id", &panel_id);
if (rc) {
dev_err(DEV_MMI, "%s: cannot read mmi,panel_id %d\n", __func__, rc);
goto done;
}
rc = of_property_read_u64(chosen, "mmi,panel_ver", &panel_ver);
if (rc) {
dev_err(DEV_MMI, "%s: cannot read mmi,panel_ver %d\n", __func__, rc);
goto done;
}
of_node_put(chosen);
dev_dbg(DEV_MMI, "%s: [%s] id=%llx ver=%llx\n",
__func__, chosen->name, panel_id, panel_ver);
np = of_find_node_by_name(dev->of_node, "mmi,panel-mappings");
if (!np) {
dev_err(DEV_MMI, "%s: cannot read mmi,panel-mappings\n", __func__);
goto done;
}
for_each_child_of_node(np, child) {
u64 id, ver;
rc = of_property_read_u64(child, "panel-id", &id);
if (rc) {
dev_err(DEV_MMI, "%s: cannot read panel-id %d\n", __func__, rc);
goto done;
}
rc = of_property_read_u64(child, "panel-ver", &ver);
if (rc) {
dev_err(DEV_MMI, "%s: cannot read panel-ver %d\n", __func__, rc);
goto done;
}
dev_dbg(DEV_MMI, "%s: [%s] id=%llx ver=%llx\n",
__func__, child->name, id, ver);
of_node_put(child);
if (id == panel_id && ver == panel_ver) {
strlcpy(data->panel_supplier, child->name,
sizeof(data->panel_supplier));
break;
}
}
of_node_put(np);
dev_info(DEV_MMI, "%s: panel-supplier %s\n",
__func__, data->panel_supplier);
}
done:
return 0;
}