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pstar: sar: support multi parameters for different panels

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the panel name can be captured from the bootargs, then define the correspoding
regs in dts of sensor.

Change-Id: Ia25da8afad4fd6c710a3f8d62333350278cdfb78
Signed-off-by: zhangh12 <zhangh12@motorola.com>
Reviewed-on: https://gerrit.mot.com/1967050
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Wen Xie <xiewen3@motorola.com>
Reviewed-by: Jiyue Cui <cuijy2@lenovo.com>
Reviewed-by: Yuchang Guo <guoyc1@lenovo.com>
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
zhangh12 2021-06-02 11:28:28 +08:00 • committed by Hong Zhang
commit 57dceea1db
1 changed files with 69 additions and 2 deletions
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71
drivers/misc/sx937x/sx937x_sar.c
View file

@ -816,6 +816,40 @@ static void touchProcess(psx93XX_t this)
}
}
#define DSI_DISPALY_MAX_LEN 64
const char *get_dsi_display_name(void)
{
const char *bootargs = NULL;
char *end = NULL;
char *idx = NULL;
struct device_node *np;
static char display[DSI_DISPALY_MAX_LEN] = {'\0'};
if (display[0] != '\0')
return display;
np = of_find_node_by_path("/chosen");
if (np == NULL)
return NULL;
if (of_property_read_string(np, "bootargs", &bootargs) != 0)
goto putnode;
idx = strstr(bootargs, "msm_drm.dsi_display0=");
if (idx) {
end = strpbrk(idx, " ");
idx = strpbrk(idx, "=");
if (idx && end > idx)
strlcpy(display, idx + 1, end - idx);
}
return display;
putnode:
of_node_put(np);
return NULL;
}
#ifdef CONFIG_CAPSENSE_FLIP_CAL
static int read_dt_regs(struct device *dev, const char *dt_field, int *num_regs, struct smtc_reg_data **regs)
{
@ -874,7 +908,9 @@ static int sx937x_parse_dt(struct sx937x_platform_data *pdata, struct device *de
{
struct device_node *dNode = dev->of_node;
enum of_gpio_flags flags;
int rc;
int i, rc, support_panel_num;
const char *panel_name, *current_dsi;
const char *reg_group_name = "Semtech,reg-init";
if (dNode == NULL)
return -ENODEV;
@ -956,8 +992,39 @@ static int sx937x_parse_dt(struct sx937x_platform_data *pdata, struct device *de
return -ENOMEM;
}
current_dsi = get_dsi_display_name();
/*
if three's no "support-panel-num" in dts or
there's no matched panel_name(maybe it is a bare board),
the default reg_group_name will be "Semtech,reg-init"
*/
if(!of_property_read_u32(dNode,"support-panel-num",&support_panel_num))
{
LOG_INFO("support_panel_num is %d \n", support_panel_num);
for (i = 0; i < support_panel_num; i++) {
if(of_property_read_string_index(dNode, "support-panel-names", i, &panel_name))
{
LOG_ERR("[SX937x]: %s - get support-panel-names error\n", __func__);
return -ENODEV;
}
if(strstr(current_dsi, panel_name))
{
if(of_property_read_string_index(dNode, "reg-groups-names", i, &reg_group_name))
{
LOG_ERR("[SX937x]: %s - get reg-groups-names error\n", __func__);
return -ENODEV;
}
LOG_INFO("dsi display matched, index %d, support dsi: %s, reg group: %s\n", i, panel_name, reg_group_name);
break;
}
}
} else {
LOG_INFO("multi panels isn't supported\n");
}
// initialize the array
if (of_property_read_u32_array(dNode,"Semtech,reg-init",(u32*)&(pdata->pi2c_reg[0]),sizeof(struct smtc_reg_data)*pdata->i2c_reg_num/sizeof(u32)))
if (of_property_read_u32_array(dNode,reg_group_name,(u32*)&(pdata->pi2c_reg[0]),sizeof(struct smtc_reg_data)*pdata->i2c_reg_num/sizeof(u32)))
return -ENOMEM;
}
#ifdef CONFIG_CAPSENSE_HEADSET_STATE