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disp: msm: dsi: parse & store gpio registers used by the host & panel

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Parse all the GPIO pins used by the DSI host and the display panel
along with its register ranges and store it in panel struct. This
avoids parsing the device-tree everytime during transitions between
trusted and primary vm.

Change-Id: Ibbb646358c0409703afda1c4f758f044fc8c0001
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
This commit is contained in:
Veera Sundaram Sankaran
2020-11-04 15:22:01 -08:00
parent 6fa30971f2
commit 6dd2c3cd87
2 changed files with 69 additions and 50 deletions
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109
msm/dsi/dsi_panel.c
View File

@@ -2130,63 +2130,19 @@ int dsi_panel_get_io_resources(struct dsi_panel *panel,
struct list_head temp_head;
struct msm_io_mem_entry *io_mem, *pos, *tmp;
struct list_head *mem_list = &io_res->mem;
int i, rc = 0, address_count, pin_count;
u32 *pins = NULL, *address = NULL;
u32 base, size;
struct dsi_parser_utils *utils = &panel->utils;
int i, rc = 0;
INIT_LIST_HEAD(&temp_head);
address_count = utils->count_u32_elems(utils->data,
"qcom,dsi-panel-gpio-address");
if (address_count != 2) {
DSI_DEBUG("panel gpio address not defined\n");
return 0;
}
address = kzalloc(sizeof(u32) * address_count, GFP_KERNEL);
if (!address)
return -ENOMEM;
rc = utils->read_u32_array(utils->data, "qcom,dsi-panel-gpio-address",
address, address_count);
if (rc) {
DSI_ERR("panel gpio address not defined correctly\n");
goto end;
}
base = address[0];
size = address[1];
pin_count = utils->count_u32_elems(utils->data,
"qcom,dsi-panel-gpio-pins");
if (pin_count < 0) {
DSI_ERR("panel gpio pins not defined\n");
rc = pin_count;
goto end;
}
pins = kzalloc(sizeof(u32) * pin_count, GFP_KERNEL);
if (!pins) {
rc = -ENOMEM;
goto end;
}
rc = utils->read_u32_array(utils->data, "qcom,dsi-panel-gpio-pins",
pins, pin_count);
if (rc) {
DSI_ERR("panel gpio pins not defined correctly\n");
goto end;
}
for (i = 0; i < pin_count; i++) {
for (i = 0; i < panel->tlmm_gpio_count; i++) {
io_mem = kzalloc(sizeof(*io_mem), GFP_KERNEL);
if (!io_mem) {
rc = -ENOMEM;
goto parse_fail;
}
io_mem->base = base + (pins[i] * size);
io_mem->size = size;
io_mem->base = panel->tlmm_gpio[i].addr;
io_mem->size = panel->tlmm_gpio[i].size;
list_add(&io_mem->list, &temp_head);
}
@@ -2200,8 +2156,6 @@ parse_fail:
kzfree(pos);
}
end:
kzfree(pins);
kzfree(address);
return rc;
}
@@ -2290,6 +2244,54 @@ error:
return rc;
}
static int dsi_panel_parse_tlmm_gpio(struct dsi_panel *panel)
{
struct dsi_parser_utils *utils = &panel->utils;
u32 base, size, pin;
int pin_count, address_count, name_count, i;
address_count = of_property_count_u32_elems(utils->data,
"qcom,dsi-panel-gpio-address");
if (address_count != 2) {
DSI_DEBUG("panel gpio address not defined\n");
return 0;
}
of_property_read_u32_index(utils->data,
"qcom,dsi-panel-gpio-address", 0, &base);
of_property_read_u32_index(utils->data,
"qcom,dsi-panel-gpio-address", 1, &size);
pin_count = of_property_count_u32_elems(utils->data,
"qcom,dsi-panel-gpio-pins");
name_count = of_property_count_strings(utils->data,
"qcom,dsi-panel-gpio-names");
if ((pin_count < 0) || (name_count < 0) || (pin_count != name_count)) {
DSI_ERR("invalid gpio pins/names\n");
return -EINVAL;
}
panel->tlmm_gpio = kcalloc(pin_count,
sizeof(struct dsi_tlmm_gpio), GFP_KERNEL);
if (!panel->tlmm_gpio)
return -ENOMEM;
panel->tlmm_gpio_count = pin_count;
for (i = 0; i < pin_count; i++) {
of_property_read_u32_index(utils->data,
"qcom,dsi-panel-gpio-pins", i, &pin);
panel->tlmm_gpio[i].num = pin;
panel->tlmm_gpio[i].addr = base + (pin * size);
panel->tlmm_gpio[i].size = size;
of_property_read_string_index(utils->data,
"qcom,dsi-panel-gpio-names", i,
&(panel->tlmm_gpio[i].name));
}
return 0;
}
static int dsi_panel_parse_bl_pwm_config(struct dsi_panel *panel)
{
int rc = 0;
@@ -3487,6 +3489,12 @@ struct dsi_panel *dsi_panel_get(struct device *parent,
goto error;
}
rc = dsi_panel_parse_tlmm_gpio(panel);
if (rc) {
DSI_ERR("failed to parse panel tlmm gpios, rc=%d\n", rc);
goto error;
}
rc = dsi_panel_parse_power_cfg(panel);
if (rc)
DSI_ERR("failed to parse power config, rc=%d\n", rc);
@@ -3645,6 +3653,7 @@ int dsi_panel_drv_deinit(struct dsi_panel *panel)
if (rc)
DSI_ERR("[%s] failed to put regs, rc=%d\n", panel->name, rc);
kfree(panel->tlmm_gpio);
panel->host = NULL;
memset(&panel->mipi_device, 0x0, sizeof(panel->mipi_device));