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goodix: enable stylus clock on Rogue project.

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TP:
Enable stylus clocks as touchIC external clock for active pen.

Change-Id: I213a83cbe0384a0fa8f77342a1225b6d92a63f71
Reviewed-on: https://gerrit.mot.com/2063784
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jichao Zou <zoujc@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
litong20 2021-09-10 11:45:49 +08:00 • committed by litong
commit 3b040bb312
1 changed files with 16 additions and 0 deletions
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16
drivers/input/touchscreen/goodix_berlin_mmi/goodix_ts_core.c
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@ -19,6 +19,7 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/clk.h>
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 38)
#include <linux/input/mt.h>
@ -2161,6 +2162,7 @@ static int goodix_ts_probe(struct platform_device *pdev)
{
struct goodix_ts_core *core_data = NULL;
struct goodix_bus_interface *bus_interface;
struct clk *stylus_clk;
int ret;
ts_info("goodix_ts_probe IN");
@ -2188,6 +2190,20 @@ static int goodix_ts_probe(struct platform_device *pdev)
ts_err("failed parse device info form dts, %d", ret);
return -EINVAL;
}
if (of_get_property(bus_interface->dev->of_node, "clocks", NULL)) {
stylus_clk = devm_clk_get(bus_interface->dev, "stylus_clk");
if (IS_ERR_OR_NULL(stylus_clk)) {
ts_err("failed to get stylus clk\n");
} else {
ret = clk_prepare_enable(stylus_clk);
if(ret) {
ts_err("failed to enable stylus clk\n");
} else
ts_info("success to enable stylus clk\n");
}
}
} else {
ts_err("no valid device tree node found");
return -ENODEV;