diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/mipi_camera/camera.c | 363 | ||||
| -rw-r--r-- | src/drivers/intel/mipi_camera/chip.h | 26 |
2 files changed, 351 insertions, 38 deletions
diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c index f32f744f8f..51686d018e 100644 --- a/src/drivers/intel/mipi_camera/camera.c +++ b/src/drivers/intel/mipi_camera/camera.c @@ -18,6 +18,59 @@ #define CIO2_PCI_DEV 0x14 #define CIO2_PCI_FN 0x3 #define POWER_RESOURCE_NAME "PRIC" +#define GUARD_VARIABLE_FORMAT "RES%1d" +#define ENABLE_METHOD_FORMAT "ENB%1d" +#define DISABLE_METHOD_FORMAT "DSB%1d" +#define UNKNOWN_METHOD_FORMAT "UNK%1d" +#define CLK_ENABLE_METHOD "MCON" +#define CLK_DISABLE_METHOD "MCOF" + +static struct camera_resource_manager res_mgr; + +static void resource_set_action_type(struct resource_config *res_config, + enum action_type action) +{ + if (res_config) + res_config->action = action; +} + +static enum action_type resource_get_action_type(const struct resource_config *res_config) +{ + return res_config ? res_config->action : UNKNOWN_ACTION; +} + +static enum ctrl_type resource_get_ctrl_type(const struct resource_config *res_config) +{ + return res_config ? res_config->type : UNKNOWN_CTRL; +} + +static void resource_set_clk_config(struct resource_config *res_config, + const struct clk_config *clk_conf) +{ + if (res_config) { + res_config->type = IMGCLK; + res_config->clk_conf = clk_conf; + } +} + +static const struct clk_config *resource_clk_config(const struct resource_config *res_config) +{ + return res_config ? res_config->clk_conf : NULL; +} + +static void resource_set_gpio_config(struct resource_config *res_config, + const struct gpio_config *gpio_conf) +{ + if (res_config) { + res_config->type = GPIO; + res_config->gpio_conf = gpio_conf; + } +} + +static const struct gpio_config *resource_gpio_config(const struct resource_config *res_config) +{ + return res_config ? res_config->gpio_conf : NULL; +} /* * This implementation assumes there is only 1 endpoint at each end of every data port. It also @@ -436,53 +489,271 @@ static void camera_fill_vcm(const struct device *dev) acpi_dp_write(dsd); } -static void fill_power_res_sequence(struct drivers_intel_mipi_camera_config *config, - struct operation_seq *seq) +static int get_resource_index(const struct resource_config *res_config) +{ + enum ctrl_type type = resource_get_ctrl_type(res_config); + const struct clk_config *clk_config; + const struct gpio_config *gpio_config; + unsigned int i; + uint8_t res_id; + + switch (type) { + case IMGCLK: + clk_config = resource_clk_config(res_config); + res_id = clk_config->clknum; + break; + case GPIO: + gpio_config = resource_gpio_config(res_config); + res_id = gpio_config->gpio_num; + break; + default: + printk(BIOS_ERR, "Unsupported power operation: %x\n" + "OS camera driver will likely not work", type); + return -1; + } + + for (i = 0; i < res_mgr.cnt; i++) + if (res_mgr.resource[i].type == type && res_mgr.resource[i].id == res_id) + return i; + + return -1; +} + +static void add_guarded_method_namestring(struct resource_config *res_config, int res_index) +{ + char method_name[ACPI_NAME_BUFFER_SIZE]; + enum action_type action = resource_get_action_type(res_config); + + switch (action) { + case ENABLE: + snprintf(method_name, sizeof(method_name), ENABLE_METHOD_FORMAT, res_index); + break; + case DISABLE: + snprintf(method_name, sizeof(method_name), DISABLE_METHOD_FORMAT, res_index); + break; + default: + snprintf(method_name, sizeof(method_name), UNKNOWN_METHOD_FORMAT, res_index); + printk(BIOS_ERR, "Unsupported resource action: %x\n", action); + } + + acpigen_emit_namestring(method_name); +} + +static void call_guarded_method(struct resource_config *res_config) +{ + int res_index; + + if (res_config == NULL) + return; + + res_index = get_resource_index(res_config); + + if (res_index != -1) + add_guarded_method_namestring(res_config, res_index); +} + +static void add_clk_op(const struct clk_config *clk_config, enum action_type action) +{ + if (clk_config == NULL) + return; + + switch (action) { + case ENABLE: + acpigen_write_if(); + acpigen_emit_ext_op(COND_REFOF_OP); + acpigen_emit_string(CLK_ENABLE_METHOD); + acpigen_emit_namestring(CLK_ENABLE_METHOD); + acpigen_write_integer(clk_config->clknum); + acpigen_write_integer(clk_config->freq); + acpigen_pop_len(); /* CondRefOf */ + break; + case DISABLE: + acpigen_write_if(); + acpigen_emit_ext_op(COND_REFOF_OP); + acpigen_emit_string(CLK_DISABLE_METHOD); + acpigen_emit_namestring(CLK_DISABLE_METHOD); + acpigen_write_integer(clk_config->clknum); + acpigen_pop_len(); /* CondRefOf */ + break; + default: + acpigen_write_debug_string("Unsupported clock action"); + printk(BIOS_ERR, "Unsupported clock action: %x\n" + "OS camera driver will likely not work", action); + } +} + +static void add_gpio_op(const struct gpio_config *gpio_config, enum action_type action) +{ + if (gpio_config == NULL) + return; + + switch (action) { + case ENABLE: + acpigen_soc_set_tx_gpio(gpio_config->gpio_num); + break; + case DISABLE: + acpigen_soc_clear_tx_gpio(gpio_config->gpio_num); + break; + default: + acpigen_write_debug_string("Unsupported GPIO action"); + printk(BIOS_ERR, "Unsupported GPIO action: %x\n" + "OS camera driver will likely not work\n", action); + } +} + +static void add_power_operation(const struct resource_config *res_config) +{ + const struct clk_config *clk_config; + const struct gpio_config *gpio_config; + enum ctrl_type type = resource_get_ctrl_type(res_config); + enum action_type action = resource_get_action_type(res_config); + + if (res_config == NULL) + return; + + switch (type) { + case IMGCLK: + clk_config = resource_clk_config(res_config); + add_clk_op(clk_config, action); + break; + case GPIO: + gpio_config = resource_gpio_config(res_config); + add_gpio_op(gpio_config, action); + break; + default: + printk(BIOS_ERR, "Unsupported power operation: %x\n" + "OS camera driver will likely not work\n", type); + break; + } +} + +static void write_guard_variable(uint8_t res_index) +{ + char varname[ACPI_NAME_BUFFER_SIZE]; + + snprintf(varname, sizeof(varname), GUARD_VARIABLE_FORMAT, res_index); + acpigen_write_name_integer(varname, 0); +} + +static void write_enable_method(struct resource_config *res_config, uint8_t res_index) +{ + char method_name[ACPI_NAME_BUFFER_SIZE]; + char varname[ACPI_NAME_BUFFER_SIZE]; + + snprintf(varname, sizeof(varname), GUARD_VARIABLE_FORMAT, res_index); + + snprintf(method_name, sizeof(method_name), ENABLE_METHOD_FORMAT, res_index); + + acpigen_write_method_serialized(method_name, 0); + acpigen_write_if_lequal_namestr_int(varname, 0); + resource_set_action_type(res_config, ENABLE); + add_power_operation(res_config); + acpigen_pop_len(); /* if */ + + acpigen_emit_byte(INCREMENT_OP); + acpigen_emit_namestring(varname); + acpigen_pop_len(); /* method_name */ +} + +static void write_disable_method(struct resource_config *res_config, uint8_t res_index) +{ + char method_name[ACPI_NAME_BUFFER_SIZE]; + char varname[ACPI_NAME_BUFFER_SIZE]; + + snprintf(varname, sizeof(varname), GUARD_VARIABLE_FORMAT, res_index); + + snprintf(method_name, sizeof(method_name), DISABLE_METHOD_FORMAT, res_index); + + acpigen_write_method_serialized(method_name, 0); + acpigen_write_if(); + acpigen_emit_byte(LGREATER_OP); + acpigen_emit_namestring(varname); + acpigen_write_integer(0x0); + acpigen_emit_byte(DECREMENT_OP); + acpigen_emit_namestring(varname); + acpigen_pop_len(); /* if */ + + acpigen_write_if_lequal_namestr_int(varname, 0); + resource_set_action_type(res_config, DISABLE); + add_power_operation(res_config); + acpigen_pop_len(); /* if */ + acpigen_pop_len(); /* method_name */ +} + +static void add_guarded_operations(const struct drivers_intel_mipi_camera_config *config, + const struct operation_seq *seq) { unsigned int i; uint8_t index; - uint8_t gpio_num; + uint8_t res_id; + struct resource_config res_config; + int res_index; - for (i = 0; i < seq->ops_cnt; i++) { + for (i = 0; i < seq->ops_cnt && i < MAX_PWR_OPS; i++) { + index = seq->ops[i].index; switch (seq->ops[i].type) { case IMGCLK: - index = seq->ops[i].index; - if (seq->ops[i].action == ENABLE) { - acpigen_emit_namestring("MCON"); - acpigen_write_byte(config->clk_panel.clks[index].clknum); - acpigen_write_byte(config->clk_panel.clks[index].freq); - } else if (seq->ops[i].action == DISABLE) { - acpigen_emit_namestring("MCOF"); - acpigen_write_byte(config->clk_panel.clks[index].clknum); - } else { - acpigen_write_debug_string("Unsupported clock action"); - printk(BIOS_ERR, "Unsupported clock action: %x\n", - seq->ops[i].action); - printk(BIOS_ERR, "OS camera driver will likely not work"); - } - + res_id = config->clk_panel.clks[index].clknum; + resource_set_clk_config(&res_config, &config->clk_panel.clks[index]); break; case GPIO: - index = seq->ops[i].index; - gpio_num = config->gpio_panel.gpio[index].gpio_num; - if (seq->ops[i].action == ENABLE) { - acpigen_soc_set_tx_gpio(gpio_num); - } else if (seq->ops[i].action == DISABLE) { - acpigen_soc_clear_tx_gpio(gpio_num); - } else { - acpigen_write_debug_string("Unsupported GPIO action"); - printk(BIOS_ERR, "Unsupported GPIO action: %x\n", - seq->ops[i].action); - printk(BIOS_ERR, "OS camera driver will likely not work"); + res_id = config->gpio_panel.gpio[index].gpio_num; + resource_set_gpio_config(&res_config, &config->gpio_panel.gpio[index]); + break; + default: + printk(BIOS_ERR, "Unsupported power operation: %x\n" + "OS camera driver will likely not work\n", + seq->ops[i].type); + return; + } + + res_index = get_resource_index(&res_config); + + if (res_index == -1) { + if (res_mgr.cnt >= MAX_GUARDED_RESOURCES) { + printk(BIOS_ERR, "Unable to add guarded camera resource\n" + "OS camera driver will likely not work\n"); + return; } + res_mgr.resource[res_mgr.cnt].id = res_id; + res_mgr.resource[res_mgr.cnt].type = seq->ops[i].type; + + write_guard_variable(res_mgr.cnt); + write_enable_method(&res_config, res_mgr.cnt); + write_disable_method(&res_config, res_mgr.cnt); + + res_mgr.cnt++; + } + } +} + +static void fill_power_res_sequence(struct drivers_intel_mipi_camera_config *config, + struct operation_seq *seq) +{ + struct resource_config res_config; + unsigned int i; + uint8_t index; + + for (i = 0; i < seq->ops_cnt && i < MAX_PWR_OPS; i++) { + index = seq->ops[i].index; + + switch (seq->ops[i].type) { + case IMGCLK: + resource_set_clk_config(&res_config, &config->clk_panel.clks[index]); break; - default: - printk(BIOS_ERR, "Unsupported power operation: %x\n", seq->ops[i].type); - printk(BIOS_ERR, "OS camera driver will likely not work"); + case GPIO: + resource_set_gpio_config(&res_config, &config->gpio_panel.gpio[index]); break; + default: + printk(BIOS_ERR, "Unsupported power operation: %x\n" + "OS camera driver will likely not work\n", + seq->ops[i].type); + return; } + resource_set_action_type(&res_config, seq->ops[i].action); + call_guarded_method(&res_config); if (seq->ops[i].delay_ms) acpigen_write_sleep(seq->ops[i].delay_ms); } @@ -638,12 +909,32 @@ static void write_camera_device_common(const struct device *dev) static void camera_fill_ssdt(const struct device *dev) { struct drivers_intel_mipi_camera_config *config = dev->chip_info; - const char *scope = acpi_device_scope(dev); + const char *scope = NULL; + const struct device *pdev; - if (!dev->enabled || !scope) + if (!dev->enabled) return; + if (config->has_power_resource) { + pdev = dev->bus->dev; + if (!pdev || !pdev->enabled) + return; + + scope = acpi_device_scope(pdev); + if (!scope) + return; + + acpigen_write_scope(scope); + add_guarded_operations(config, &config->on_seq); + add_guarded_operations(config, &config->off_seq); + acpigen_pop_len(); /* Guarded power resource operations scope */ + } + /* Device */ + scope = acpi_device_scope(dev); + if (!scope) + return; + acpigen_write_scope(scope); if (config->device_type == INTEL_ACPI_CAMERA_CIO2 || @@ -669,7 +960,7 @@ static void camera_fill_ssdt(const struct device *dev) static const char *camera_acpi_name(const struct device *dev) { const char *prefix = NULL; - static char name[5]; + static char name[ACPI_NAME_BUFFER_SIZE]; struct drivers_intel_mipi_camera_config *config = dev->chip_info; if (config->acpi_name) diff --git a/src/drivers/intel/mipi_camera/chip.h b/src/drivers/intel/mipi_camera/chip.h index d133f7df86..d91e1e749d 100644 --- a/src/drivers/intel/mipi_camera/chip.h +++ b/src/drivers/intel/mipi_camera/chip.h @@ -13,6 +13,7 @@ #define MAX_CLK_CONFIGS 2 #define MAX_GPIO_CONFIGS 4 #define MAX_PWR_OPS 5 +#define MAX_GUARDED_RESOURCES 10 #define SEQ_OPS_CLK_ENABLE(ind, delay) \ { .type = IMGCLK, .index = (ind), .action = ENABLE, .delay_ms = (delay) } @@ -70,15 +71,36 @@ enum intel_power_action_type { }; enum ctrl_type { - IMGCLK = 1, + UNKNOWN_CTRL, + IMGCLK, GPIO }; enum action_type { - ENABLE = 1, + UNKNOWN_ACTION, + ENABLE, DISABLE }; +struct camera_resource { + uint8_t type; + uint8_t id; +}; + +struct camera_resource_manager { + uint8_t cnt; + struct camera_resource resource[MAX_GUARDED_RESOURCES]; +}; + +struct resource_config { + enum action_type action; + enum ctrl_type type; + union { + const struct clk_config *clk_conf; + const struct gpio_config *gpio_conf; + }; +}; + struct clk_config { /* IMGCLKOUT_x being used for a port */ uint8_t clknum; |