#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../../include/linux/atomisp_platform.h" #include "../../include/linux/atomisp_gmin_platform.h" #define MAX_SUBDEVS 8 enum clock_rate { VLV2_CLK_XTAL_25_0MHz = 0, VLV2_CLK_PLL_19P2MHZ = 1 }; #define CLK_RATE_19_2MHZ 19200000 #define CLK_RATE_25_0MHZ 25000000 /* X-Powers AXP288 register set */ #define ALDO1_SEL_REG 0x28 #define ALDO1_CTRL3_REG 0x13 #define ALDO1_2P8V 0x16 #define ALDO1_CTRL3_SHIFT 0x05 #define ELDO_CTRL_REG 0x12 #define ELDO1_SEL_REG 0x19 #define ELDO1_1P8V 0x16 #define ELDO1_CTRL_SHIFT 0x00 #define ELDO2_SEL_REG 0x1a #define ELDO2_1P8V 0x16 #define ELDO2_CTRL_SHIFT 0x01 /* TI SND9039 PMIC register set */ #define LDO9_REG 0x49 #define LDO10_REG 0x4a #define LDO11_REG 0x4b #define LDO_2P8V_ON 0x2f /* 0x2e selects 2.85V ... */ #define LDO_2P8V_OFF 0x2e /* ... bottom bit is "enabled" */ #define LDO_1P8V_ON 0x59 /* 0x58 selects 1.80V ... */ #define LDO_1P8V_OFF 0x58 /* ... bottom bit is "enabled" */ /* CRYSTAL COVE PMIC register set */ #define CRYSTAL_1P8V_REG 0x57 #define CRYSTAL_2P8V_REG 0x5d #define CRYSTAL_ON 0x63 #define CRYSTAL_OFF 0x62 struct gmin_subdev { struct v4l2_subdev *subdev; int clock_num; enum clock_rate clock_src; bool clock_on; struct clk *pmc_clk; struct gpio_desc *gpio0; struct gpio_desc *gpio1; struct regulator *v1p8_reg; struct regulator *v2p8_reg; struct regulator *v1p2_reg; struct regulator *v2p8_vcm_reg; enum atomisp_camera_port csi_port; unsigned int csi_lanes; enum atomisp_input_format csi_fmt; enum atomisp_bayer_order csi_bayer; bool v1p8_on; bool v2p8_on; bool v1p2_on; bool v2p8_vcm_on; u8 pwm_i2c_addr; /* For PMIC AXP */ int eldo1_sel_reg, eldo1_1p8v, eldo1_ctrl_shift; int eldo2_sel_reg, eldo2_1p8v, eldo2_ctrl_shift; }; static struct gmin_subdev gmin_subdevs[MAX_SUBDEVS]; /* ACPI HIDs for the PMICs that could be used by this driver */ #define PMIC_ACPI_AXP "INT33F4:00" /* XPower AXP288 PMIC */ #define PMIC_ACPI_TI "INT33F5:00" /* Dollar Cove TI PMIC */ #define PMIC_ACPI_CRYSTALCOVE "INT33FD:00" /* Crystal Cove PMIC */ #define PMIC_PLATFORM_TI "intel_soc_pmic_chtdc_ti" static enum { PMIC_UNSET = 0, PMIC_REGULATOR, PMIC_AXP, PMIC_TI, PMIC_CRYSTALCOVE } pmic_id; static const char *pmic_name[] = { [PMIC_UNSET] = "unset", [PMIC_REGULATOR] = "regulator driver", [PMIC_AXP] = "XPower AXP288 PMIC", [PMIC_TI] = "Dollar Cove TI PMIC", [PMIC_CRYSTALCOVE] = "Crystal Cove PMIC", }; /* The atomisp uses type==0 for the end-of-list marker, so leave space. */ static struct intel_v4l2_subdev_table pdata_subdevs[MAX_SUBDEVS + 1]; static const struct atomisp_platform_data pdata = { .subdevs = pdata_subdevs, }; /* * Something of a hack. The ECS E7 board drives camera 2.8v from an * external regulator instead of the PMIC. There's a gmin_CamV2P8 * config variable that specifies the GPIO to handle this particular * case, but this needs a broader architecture for handling camera * power. */ enum { V2P8_GPIO_UNSET = -2, V2P8_GPIO_NONE = -1 }; static int v2p8_gpio = V2P8_GPIO_UNSET; /* * Something of a hack. The CHT RVP board drives camera 1.8v from an * external regulator instead of the PMIC just like ECS E7 board, see the * comments above. */ enum { V1P8_GPIO_UNSET = -2, V1P8_GPIO_NONE = -1 }; static int v1p8_gpio = V1P8_GPIO_UNSET; static LIST_HEAD(vcm_devices); static DEFINE_MUTEX(vcm_lock); static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev); /* * Legacy/stub behavior copied from upstream platform_camera.c. The * atomisp driver relies on these values being non-NULL in a few * places, even though they are hard-coded in all current * implementations. */ const struct atomisp_camera_caps *atomisp_get_default_camera_caps(void) { static const struct atomisp_camera_caps caps = { .sensor_num = 1, .sensor = { { .stream_num = 1, }, }, }; return ∩︀ } EXPORT_SYMBOL_GPL(atomisp_get_default_camera_caps); const struct atomisp_platform_data *atomisp_get_platform_data(void) { return &pdata; } EXPORT_SYMBOL_GPL(atomisp_get_platform_data); int atomisp_register_i2c_module(struct v4l2_subdev *subdev, struct camera_sensor_platform_data *plat_data, enum intel_v4l2_subdev_type type) { int i; struct i2c_board_info *bi; struct gmin_subdev *gs; struct i2c_client *client = v4l2_get_subdevdata(subdev); struct acpi_device *adev = ACPI_COMPANION(&client->dev); dev_info(&client->dev, "register atomisp i2c module type %d\n", type); /* The windows driver model (and thus most BIOSes by default) * uses ACPI runtime power management for camera devices, but * we don't. Disable it, or else the rails will be needlessly * tickled during suspend/resume. This has caused power and * performance issues on multiple devices. */ adev->power.flags.power_resources = 0; for (i = 0; i < MAX_SUBDEVS; i++) if (!pdata.subdevs[i].type) break; if (pdata.subdevs[i].type) return -ENOMEM; /* Note subtlety of initialization order: at the point where * this registration API gets called, the platform data * callbacks have probably already been invoked, so the * gmin_subdev struct is already initialized for us. */ gs = find_gmin_subdev(subdev); pdata.subdevs[i].type = type; pdata.subdevs[i].port = gs->csi_port; pdata.subdevs[i].subdev = subdev; pdata.subdevs[i].v4l2_subdev.i2c_adapter_id = client->adapter->nr; /* Convert i2c_client to i2c_board_info */ bi = &pdata.subdevs[i].v4l2_subdev.board_info; memcpy(bi->type, client->name, I2C_NAME_SIZE); bi->flags = client->flags; bi->addr = client->addr; bi->irq = client->irq; bi->platform_data = plat_data; return 0; } EXPORT_SYMBOL_GPL(atomisp_register_i2c_module); struct v4l2_subdev *atomisp_gmin_find_subdev(struct i2c_adapter *adapter, struct i2c_board_info *board_info) { int i; for (i = 0; i < MAX_SUBDEVS && pdata.subdevs[i].type; i++) { struct intel_v4l2_subdev_table *sd = &pdata.subdevs[i]; if (sd->v4l2_subdev.i2c_adapter_id == adapter->nr && sd->v4l2_subdev.board_info.addr == board_info->addr) return sd->subdev; } return NULL; } EXPORT_SYMBOL_GPL(atomisp_gmin_find_subdev); int atomisp_gmin_remove_subdev(struct v4l2_subdev *sd) { int i, j; if (!sd) return 0; for (i = 0; i < MAX_SUBDEVS; i++) { if (pdata.subdevs[i].subdev == sd) { for (j = i + 1; j <= MAX_SUBDEVS; j++) pdata.subdevs[j - 1] = pdata.subdevs[j]; } if (gmin_subdevs[i].subdev == sd) { if (gmin_subdevs[i].gpio0) gpiod_put(gmin_subdevs[i].gpio0); gmin_subdevs[i].gpio0 = NULL; if (gmin_subdevs[i].gpio1) gpiod_put(gmin_subdevs[i].gpio1); gmin_subdevs[i].gpio1 = NULL; if (pmic_id == PMIC_REGULATOR) { regulator_put(gmin_subdevs[i].v1p8_reg); regulator_put(gmin_subdevs[i].v2p8_reg); regulator_put(gmin_subdevs[i].v1p2_reg); regulator_put(gmin_subdevs[i].v2p8_vcm_reg); } gmin_subdevs[i].subdev = NULL; } } return 0; } EXPORT_SYMBOL_GPL(atomisp_gmin_remove_subdev); struct gmin_cfg_var { const char *name, *val; }; static struct gmin_cfg_var ffrd8_vars[] = { { "INTCF1B:00_ImxId", "0x134" }, { "INTCF1B:00_CsiPort", "1" }, { "INTCF1B:00_CsiLanes", "4" }, { "INTCF1B:00_CamClk", "0" }, {}, }; /* Cribbed from MCG defaults in the mt9m114 driver, not actually verified * vs. T100 hardware */ static struct gmin_cfg_var t100_vars[] = { { "INT33F0:00_CsiPort", "0" }, { "INT33F0:00_CsiLanes", "1" }, { "INT33F0:00_CamClk", "1" }, {}, }; static struct gmin_cfg_var mrd7_vars[] = { {"INT33F8:00_CamType", "1"}, {"INT33F8:00_CsiPort", "1"}, {"INT33F8:00_CsiLanes", "2"}, {"INT33F8:00_CsiFmt", "13"}, {"INT33F8:00_CsiBayer", "0"}, {"INT33F8:00_CamClk", "0"}, {"INT33F9:00_CamType", "1"}, {"INT33F9:00_CsiPort", "0"}, {"INT33F9:00_CsiLanes", "1"}, {"INT33F9:00_CsiFmt", "13"}, {"INT33F9:00_CsiBayer", "0"}, {"INT33F9:00_CamClk", "1"}, {}, }; static struct gmin_cfg_var ecs7_vars[] = { {"INT33BE:00_CsiPort", "1"}, {"INT33BE:00_CsiLanes", "2"}, {"INT33BE:00_CsiFmt", "13"}, {"INT33BE:00_CsiBayer", "2"}, {"INT33BE:00_CamClk", "0"}, {"INT33F0:00_CsiPort", "0"}, {"INT33F0:00_CsiLanes", "1"}, {"INT33F0:00_CsiFmt", "13"}, {"INT33F0:00_CsiBayer", "0"}, {"INT33F0:00_CamClk", "1"}, {"gmin_V2P8GPIO", "402"}, {}, }; static struct gmin_cfg_var i8880_vars[] = { {"XXOV2680:00_CsiPort", "1"}, {"XXOV2680:00_CsiLanes", "1"}, {"XXOV2680:00_CamClk", "0"}, {"XXGC0310:00_CsiPort", "0"}, {"XXGC0310:00_CsiLanes", "1"}, {"XXGC0310:00_CamClk", "1"}, {}, }; static struct gmin_cfg_var asus_vars[] = { {"OVTI2680:00_CsiPort", "1"}, {"OVTI2680:00_CsiLanes", "1"}, {"OVTI2680:00_CsiFmt", "15"}, {"OVTI2680:00_CsiBayer", "0"}, {"OVTI2680:00_CamClk", "1"}, {}, }; static const struct dmi_system_id gmin_vars[] = { { .ident = "BYT-T FFD8", .matches = { DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"), }, .driver_data = ffrd8_vars, }, { .ident = "T100TA", .matches = { DMI_MATCH(DMI_BOARD_NAME, "T100TA"), }, .driver_data = t100_vars, }, { .ident = "MRD7", .matches = { DMI_MATCH(DMI_BOARD_NAME, "TABLET"), DMI_MATCH(DMI_BOARD_VERSION, "MRD 7"), }, .driver_data = mrd7_vars, }, { .ident = "ST70408", .matches = { DMI_MATCH(DMI_BOARD_NAME, "ST70408"), }, .driver_data = ecs7_vars, }, { .ident = "VTA0803", .matches = { DMI_MATCH(DMI_BOARD_NAME, "VTA0803"), }, .driver_data = i8880_vars, }, { .ident = "T101HA", .matches = { DMI_MATCH(DMI_BOARD_NAME, "T101HA"), }, .driver_data = asus_vars, }, {} }; #define GMIN_CFG_VAR_EFI_GUID EFI_GUID(0xecb54cd9, 0xe5ae, 0x4fdc, \ 0xa9, 0x71, 0xe8, 0x77, \ 0x75, 0x60, 0x68, 0xf7) #define CFG_VAR_NAME_MAX 64 #define GMIN_PMC_CLK_NAME 14 /* "pmc_plt_clk_[0..5]" */ static char gmin_pmc_clk_name[GMIN_PMC_CLK_NAME]; static int gmin_i2c_match_one(struct device *dev, const void *data) { const char *name = data; struct i2c_client *client; if (dev->type != &i2c_client_type) return 0; client = to_i2c_client(dev); return (!strcmp(name, client->name)); } static struct i2c_client *gmin_i2c_dev_exists(struct device *dev, char *name, struct i2c_client **client) { struct device *d; while ((d = bus_find_device(&i2c_bus_type, NULL, name, gmin_i2c_match_one))) { *client = to_i2c_client(d); dev_dbg(dev, "found '%s' at address 0x%02x, adapter %d\n", (*client)->name, (*client)->addr, (*client)->adapter->nr); return *client; } return NULL; } static int gmin_i2c_write(struct device *dev, u16 i2c_addr, u8 reg, u32 value, u32 mask) { int ret; /* * FIXME: Right now, the intel_pmic driver just write values * directly at the regmap, instead of properly implementing * i2c_transfer() mechanism. Let's use the same interface here, * as otherwise we may face issues. */ dev_dbg(dev, "I2C write, addr: 0x%02x, reg: 0x%02x, value: 0x%02x, mask: 0x%02x\n", i2c_addr, reg, value, mask); ret = intel_soc_pmic_exec_mipi_pmic_seq_element(i2c_addr, reg, value, mask); if (ret == -EOPNOTSUPP) { dev_err(dev, "ACPI didn't mapped the OpRegion needed to access I2C address 0x%02x.\n" "Need to compile the Kernel using CONFIG_*_PMIC_OPREGION settings\n", i2c_addr); return ret; } return ret; } static struct gmin_subdev *gmin_subdev_add(struct v4l2_subdev *subdev) { int i, ret; struct device *dev; struct i2c_client *power = NULL, *client = v4l2_get_subdevdata(subdev); if (!client) return NULL; dev = &client->dev; if (!pmic_id) { if (gmin_i2c_dev_exists(dev, PMIC_ACPI_TI, &power)) pmic_id = PMIC_TI; else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_AXP, &power)) pmic_id = PMIC_AXP; else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_CRYSTALCOVE, &power)) pmic_id = PMIC_CRYSTALCOVE; else pmic_id = PMIC_REGULATOR; } for (i = 0; i < MAX_SUBDEVS && gmin_subdevs[i].subdev; i++) ; if (i >= MAX_SUBDEVS) return NULL; if (power) { gmin_subdevs[i].pwm_i2c_addr = power->addr; dev_info(dev, "gmin: power management provided via %s (i2c addr 0x%02x)\n", pmic_name[pmic_id], power->addr); } else { dev_info(dev, "gmin: power management provided via %s\n", pmic_name[pmic_id]); } gmin_subdevs[i].subdev = subdev; gmin_subdevs[i].clock_num = gmin_get_var_int(dev, false, "CamClk", 0); /*WA:CHT requires XTAL clock as PLL is not stable.*/ gmin_subdevs[i].clock_src = gmin_get_var_int(dev, false, "ClkSrc", VLV2_CLK_PLL_19P2MHZ); gmin_subdevs[i].csi_port = gmin_get_var_int(dev, false, "CsiPort", 0); gmin_subdevs[i].csi_lanes = gmin_get_var_int(dev, false, "CsiLanes", 1); /* get PMC clock with clock framework */ snprintf(gmin_pmc_clk_name, sizeof(gmin_pmc_clk_name), "%s_%d", "pmc_plt_clk", gmin_subdevs[i].clock_num); gmin_subdevs[i].pmc_clk = devm_clk_get(dev, gmin_pmc_clk_name); if (IS_ERR(gmin_subdevs[i].pmc_clk)) { ret = PTR_ERR(gmin_subdevs[i].pmc_clk); dev_err(dev, "Failed to get clk from %s : %d\n", gmin_pmc_clk_name, ret); return NULL; } /* * The firmware might enable the clock at * boot (this information may or may not * be reflected in the enable clock register). * To change the rate we must disable the clock * first to cover these cases. Due to common * clock framework restrictions that do not allow * to disable a clock that has not been enabled, * we need to enable the clock first. */ ret = clk_prepare_enable(gmin_subdevs[i].pmc_clk); if (!ret) clk_disable_unprepare(gmin_subdevs[i].pmc_clk); gmin_subdevs[i].gpio0 = gpiod_get_index(dev, NULL, 0, GPIOD_OUT_LOW); if (IS_ERR(gmin_subdevs[i].gpio0)) gmin_subdevs[i].gpio0 = NULL; gmin_subdevs[i].gpio1 = gpiod_get_index(dev, NULL, 1, GPIOD_OUT_LOW); if (IS_ERR(gmin_subdevs[i].gpio1)) gmin_subdevs[i].gpio1 = NULL; switch (pmic_id) { case PMIC_REGULATOR: gmin_subdevs[i].v1p8_reg = regulator_get(dev, "V1P8SX"); gmin_subdevs[i].v2p8_reg = regulator_get(dev, "V2P8SX"); gmin_subdevs[i].v1p2_reg = regulator_get(dev, "V1P2A"); gmin_subdevs[i].v2p8_vcm_reg = regulator_get(dev, "VPROG4B"); /* Note: ideally we would initialize v[12]p8_on to the * output of regulator_is_enabled(), but sadly that * API is broken with the current drivers, returning * "1" for a regulator that will then emit a * "unbalanced disable" WARNing if we try to disable * it. */ break; case PMIC_AXP: gmin_subdevs[i].eldo1_1p8v = gmin_get_var_int(dev, false, "eldo1_1p8v", ELDO1_1P8V); gmin_subdevs[i].eldo1_sel_reg = gmin_get_var_int(dev, false, "eldo1_sel_reg", ELDO1_SEL_REG); gmin_subdevs[i].eldo1_ctrl_shift = gmin_get_var_int(dev, false, "eldo1_ctrl_shift", ELDO1_CTRL_SHIFT); gmin_subdevs[i].eldo2_1p8v = gmin_get_var_int(dev, false, "eldo2_1p8v", ELDO2_1P8V); gmin_subdevs[i].eldo2_sel_reg = gmin_get_var_int(dev, false, "eldo2_sel_reg", ELDO2_SEL_REG); gmin_subdevs[i].eldo2_ctrl_shift = gmin_get_var_int(dev, false, "eldo2_ctrl_shift", ELDO2_CTRL_SHIFT); gmin_subdevs[i].pwm_i2c_addr = power->addr; break; default: break; } return &gmin_subdevs[i]; } static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev) { int i; for (i = 0; i < MAX_SUBDEVS; i++) if (gmin_subdevs[i].subdev == subdev) return &gmin_subdevs[i]; return gmin_subdev_add(subdev); } static int axp_regulator_set(struct device *dev, struct gmin_subdev *gs, int sel_reg, u8 setting, int ctrl_reg, int shift, bool on) { int ret; int val; ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, setting, 0xff); if (ret) return ret; val = on ? 1 << shift : 0; ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, val, 1 << shift); if (ret) return ret; return 0; } static int axp_v1p8_on(struct device *dev, struct gmin_subdev *gs) { int ret; ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, ELDO_CTRL_REG, gs->eldo2_ctrl_shift, true); if (ret) return ret; /* * This sleep comes out of the gc2235 driver, which is the * only one I currently see that wants to set both 1.8v rails. */ usleep_range(110, 150); ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v, ELDO_CTRL_REG, gs->eldo1_ctrl_shift, true); if (ret) return ret; ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false); return ret; } static int axp_v1p8_off(struct device *dev, struct gmin_subdev *gs) { int ret; ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v, ELDO_CTRL_REG, gs->eldo1_ctrl_shift, false); if (ret) return ret; ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false); return ret; } static int gmin_gpio0_ctrl(struct v4l2_subdev *subdev, int on) { struct gmin_subdev *gs = find_gmin_subdev(subdev); if (gs) { gpiod_set_value(gs->gpio0, on); return 0; } return -EINVAL; } static int gmin_gpio1_ctrl(struct v4l2_subdev *subdev, int on) { struct gmin_subdev *gs = find_gmin_subdev(subdev); if (gs) { gpiod_set_value(gs->gpio1, on); return 0; } return -EINVAL; } static int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on) { struct gmin_subdev *gs = find_gmin_subdev(subdev); if (!gs || gs->v1p2_on == on) return 0; gs->v1p2_on = on; /* use regulator for PMIC */ if (gs->v1p2_reg) { if (on) return regulator_enable(gs->v1p2_reg); else return regulator_disable(gs->v1p2_reg); } /* TODO:v1p2 may need to extend to other PMICs */ return -EINVAL; } static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on) { struct gmin_subdev *gs = find_gmin_subdev(subdev); int ret; struct device *dev; struct i2c_client *client = v4l2_get_subdevdata(subdev); int value; dev = &client->dev; if (v1p8_gpio == V1P8_GPIO_UNSET) { v1p8_gpio = gmin_get_var_int(dev, true, "V1P8GPIO", V1P8_GPIO_NONE); if (v1p8_gpio != V1P8_GPIO_NONE) { pr_info("atomisp_gmin_platform: 1.8v power on GPIO %d\n", v1p8_gpio); ret = gpio_request(v1p8_gpio, "camera_v1p8_en"); if (!ret) ret = gpio_direction_output(v1p8_gpio, 0); if (ret) pr_err("V1P8 GPIO initialization failed\n"); } } if (!gs || gs->v1p8_on == on) return 0; gs->v1p8_on = on; if (v1p8_gpio >= 0) gpio_set_value(v1p8_gpio, on); if (gs->v1p8_reg) { regulator_set_voltage(gs->v1p8_reg, 1800000, 1800000); if (on) return regulator_enable(gs->v1p8_reg); else return regulator_disable(gs->v1p8_reg); } switch (pmic_id) { case PMIC_AXP: if (on) return axp_v1p8_on(subdev->dev, gs); else return axp_v1p8_off(subdev->dev, gs); case PMIC_TI: value = on ? LDO_1P8V_ON : LDO_1P8V_OFF; return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, LDO10_REG, value, 0xff); case PMIC_CRYSTALCOVE: value = on ? CRYSTAL_ON : CRYSTAL_OFF; return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, CRYSTAL_1P8V_REG, value, 0xff); default: dev_err(subdev->dev, "Couldn't set power mode for v1p2\n"); } return -EINVAL; } static int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on) { struct gmin_subdev *gs = find_gmin_subdev(subdev); int ret; struct device *dev; struct i2c_client *client = v4l2_get_subdevdata(subdev); int value; dev = &client->dev; if (v2p8_gpio == V2P8_GPIO_UNSET) { v2p8_gpio = gmin_get_var_int(dev, true, "V2P8GPIO", V2P8_GPIO_NONE); if (v2p8_gpio != V2P8_GPIO_NONE) { pr_info("atomisp_gmin_platform: 2.8v power on GPIO %d\n", v2p8_gpio); ret = gpio_request(v2p8_gpio, "camera_v2p8"); if (!ret) ret = gpio_direction_output(v2p8_gpio, 0); if (ret) pr_err("V2P8 GPIO initialization failed\n"); } } if (!gs || gs->v2p8_on == on) return 0; gs->v2p8_on = on; if (v2p8_gpio >= 0) gpio_set_value(v2p8_gpio, on); if (gs->v2p8_reg) { regulator_set_voltage(gs->v2p8_reg, 2900000, 2900000); if (on) return regulator_enable(gs->v2p8_reg); else return regulator_disable(gs->v2p8_reg); } switch (pmic_id) { case PMIC_AXP: return axp_regulator_set(subdev->dev, gs, ALDO1_SEL_REG, ALDO1_2P8V, ALDO1_CTRL3_REG, ALDO1_CTRL3_SHIFT, on); case PMIC_TI: value = on ? LDO_2P8V_ON : LDO_2P8V_OFF; return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, LDO9_REG, value, 0xff); case PMIC_CRYSTALCOVE: value = on ? CRYSTAL_ON : CRYSTAL_OFF; return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, CRYSTAL_2P8V_REG, value, 0xff); default: dev_err(subdev->dev, "Couldn't set power mode for v1p2\n"); } return -EINVAL; } static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on) { int ret = 0; struct gmin_subdev *gs = find_gmin_subdev(subdev); struct i2c_client *client = v4l2_get_subdevdata(subdev); if (gs->clock_on == !!on) return 0; if (on) { ret = clk_set_rate(gs->pmc_clk, gs->clock_src ? CLK_RATE_19_2MHZ : CLK_RATE_25_0MHZ); if (ret) dev_err(&client->dev, "unable to set PMC rate %d\n", gs->clock_src); ret = clk_prepare_enable(gs->pmc_clk); if (ret == 0) gs->clock_on = true; } else { clk_disable_unprepare(gs->pmc_clk); gs->clock_on = false; } return ret; } static int gmin_csi_cfg(struct v4l2_subdev *sd, int flag) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct gmin_subdev *gs = find_gmin_subdev(sd); if (!client || !gs) return -ENODEV; return camera_sensor_csi(sd, gs->csi_port, gs->csi_lanes, gs->csi_fmt, gs->csi_bayer, flag); } static struct camera_vcm_control *gmin_get_vcm_ctrl(struct v4l2_subdev *subdev, char *camera_module) { struct i2c_client *client = v4l2_get_subdevdata(subdev); struct gmin_subdev *gs = find_gmin_subdev(subdev); struct camera_vcm_control *vcm; if (!client || !gs) return NULL; if (!camera_module) return NULL; mutex_lock(&vcm_lock); list_for_each_entry(vcm, &vcm_devices, list) { if (!strcmp(camera_module, vcm->camera_module)) { mutex_unlock(&vcm_lock); return vcm; } } mutex_unlock(&vcm_lock); return NULL; } static struct camera_sensor_platform_data gmin_plat = { .gpio0_ctrl = gmin_gpio0_ctrl, .gpio1_ctrl = gmin_gpio1_ctrl, .v1p8_ctrl = gmin_v1p8_ctrl, .v2p8_ctrl = gmin_v2p8_ctrl, .v1p2_ctrl = gmin_v1p2_ctrl, .flisclk_ctrl = gmin_flisclk_ctrl, .csi_cfg = gmin_csi_cfg, .get_vcm_ctrl = gmin_get_vcm_ctrl, }; struct camera_sensor_platform_data *gmin_camera_platform_data( struct v4l2_subdev *subdev, enum atomisp_input_format csi_format, enum atomisp_bayer_order csi_bayer) { struct gmin_subdev *gs = find_gmin_subdev(subdev); gs->csi_fmt = csi_format; gs->csi_bayer = csi_bayer; return &gmin_plat; } EXPORT_SYMBOL_GPL(gmin_camera_platform_data); int atomisp_gmin_register_vcm_control(struct camera_vcm_control *vcmCtrl) { if (!vcmCtrl) return -EINVAL; mutex_lock(&vcm_lock); list_add_tail(&vcmCtrl->list, &vcm_devices); mutex_unlock(&vcm_lock); return 0; } EXPORT_SYMBOL_GPL(atomisp_gmin_register_vcm_control); static int gmin_get_hardcoded_var(struct gmin_cfg_var *varlist, const char *var8, char *out, size_t *out_len) { struct gmin_cfg_var *gv; for (gv = varlist; gv->name; gv++) { size_t vl; if (strcmp(var8, gv->name)) continue; vl = strlen(gv->val); if (vl > *out_len - 1) return -ENOSPC; strcpy(out, gv->val); *out_len = vl; return 0; } return -EINVAL; } /* Retrieves a device-specific configuration variable. The dev * argument should be a device with an ACPI companion, as all * configuration is based on firmware ID. */ static int gmin_get_config_var(struct device *maindev, bool is_gmin, const char *var, char *out, size_t *out_len) { char var8[CFG_VAR_NAME_MAX]; efi_char16_t var16[CFG_VAR_NAME_MAX]; struct efivar_entry *ev; const struct dmi_system_id *id; int i, ret; struct device *dev = maindev; if (!is_gmin && ACPI_COMPANION(dev)) dev = &ACPI_COMPANION(dev)->dev; if (!is_gmin) ret = snprintf(var8, sizeof(var8), "%s_%s", dev_name(dev), var); else ret = snprintf(var8, sizeof(var8), "gmin_%s", var); if (ret < 0 || ret >= sizeof(var8) - 1) return -EINVAL; /* First check a hard-coded list of board-specific variables. * Some device firmwares lack the ability to set EFI variables at * runtime. */ id = dmi_first_match(gmin_vars); if (id) { dev_info(maindev, "Found DMI entry for '%s'\n", var8); return gmin_get_hardcoded_var(id->driver_data, var8, out, out_len); } /* Our variable names are ASCII by construction, but EFI names * are wide chars. Convert and zero-pad. */ memset(var16, 0, sizeof(var16)); for (i = 0; i < sizeof(var8) && var8[i]; i++) var16[i] = var8[i]; /* Not sure this API usage is kosher; efivar_entry_get()'s * implementation simply uses VariableName and VendorGuid from * the struct and ignores the rest, but it seems like there * ought to be an "official" efivar_entry registered * somewhere? */ ev = kzalloc(sizeof(*ev), GFP_KERNEL); if (!ev) return -ENOMEM; memcpy(&ev->var.VariableName, var16, sizeof(var16)); ev->var.VendorGuid = GMIN_CFG_VAR_EFI_GUID; ev->var.DataSize = *out_len; ret = efivar_entry_get(ev, &ev->var.Attributes, &ev->var.DataSize, ev->var.Data); if (ret == 0) { memcpy(out, ev->var.Data, ev->var.DataSize); *out_len = ev->var.DataSize; dev_info(maindev, "found EFI entry for '%s'\n", var8); } else if (is_gmin) { dev_warn(maindev, "Failed to find gmin variable %s\n", var8); } else { dev_warn(maindev, "Failed to find variable %s\n", var8); } kfree(ev); return ret; } int gmin_get_var_int(struct device *dev, bool is_gmin, const char *var, int def) { char val[CFG_VAR_NAME_MAX]; size_t len = sizeof(val); long result; int ret; ret = gmin_get_config_var(dev, is_gmin, var, val, &len); if (!ret) { val[len] = 0; ret = kstrtol(val, 0, &result); } return ret ? def : result; } EXPORT_SYMBOL_GPL(gmin_get_var_int); int camera_sensor_csi(struct v4l2_subdev *sd, u32 port, u32 lanes, u32 format, u32 bayer_order, int flag) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct camera_mipi_info *csi = NULL; if (flag) { csi = kzalloc(sizeof(*csi), GFP_KERNEL); if (!csi) return -ENOMEM; csi->port = port; csi->num_lanes = lanes; csi->input_format = format; csi->raw_bayer_order = bayer_order; v4l2_set_subdev_hostdata(sd, (void *)csi); csi->metadata_format = ATOMISP_INPUT_FORMAT_EMBEDDED; csi->metadata_effective_width = NULL; dev_info(&client->dev, "camera pdata: port: %d lanes: %d order: %8.8x\n", port, lanes, bayer_order); } else { csi = v4l2_get_subdev_hostdata(sd); kfree(csi); } return 0; } EXPORT_SYMBOL_GPL(camera_sensor_csi); /* PCI quirk: The BYT ISP advertises PCI runtime PM but it doesn't * work. Disable so the kernel framework doesn't hang the device * trying. The driver itself does direct calls to the PUNIT to manage * ISP power. */ static void isp_pm_cap_fixup(struct pci_dev *dev) { dev_info(&dev->dev, "Disabling PCI power management on camera ISP\n"); dev->pm_cap = 0; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0f38, isp_pm_cap_fixup); MODULE_DESCRIPTION("Ancillary routines for binding ACPI devices"); MODULE_LICENSE("GPL");