Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *	Nishanth Menon <nm@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *	Dave Gerlach <d-gerlach@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * TI OPP supply driver that provides override into the regulator control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * for generic opp core to handle devices with ABB regulator and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * SmartReflex Class0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/cpufreq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/pm_opp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * struct ti_opp_supply_optimum_voltage_table - optimized voltage table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * @reference_uv:	reference voltage (usually Nominal voltage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * @optimized_uv:	Optimized voltage from efuse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) struct ti_opp_supply_optimum_voltage_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	unsigned int reference_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	unsigned int optimized_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  * struct ti_opp_supply_data - OMAP specific opp supply data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  * @vdd_table:	Optimized voltage mapping table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  * @num_vdd_table: number of entries in vdd_table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  * @vdd_absolute_max_voltage_uv: absolute maximum voltage in UV for the supply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) struct ti_opp_supply_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct ti_opp_supply_optimum_voltage_table *vdd_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	u32 num_vdd_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	u32 vdd_absolute_max_voltage_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static struct ti_opp_supply_data opp_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49)  * struct ti_opp_supply_of_data - device tree match data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50)  * @flags:	specific type of opp supply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51)  * @efuse_voltage_mask: mask required for efuse register representing voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  * @efuse_voltage_uv: Are the efuse entries in micro-volts? if not, assume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)  *		milli-volts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) struct ti_opp_supply_of_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) #define OPPDM_HAS_NO_ABB			BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	const u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	const u32 efuse_voltage_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	const bool efuse_voltage_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64)  * _store_optimized_voltages() - store optimized voltages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)  * @dev:	ti opp supply device for which we need to store info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66)  * @data:	data specific to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68)  * Picks up efuse based optimized voltages for VDD unique per device and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69)  * stores it in internal data structure for use during transition requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  * Return: If successful, 0, else appropriate error value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) static int _store_optimized_voltages(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 				     struct ti_opp_supply_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	struct property *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	const __be32 *val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	int proplen, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct ti_opp_supply_optimum_voltage_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	const struct ti_opp_supply_of_data *of_data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	/* pick up Efuse based voltages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	res = platform_get_resource(to_platform_device(dev), IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (!res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		dev_err(dev, "Unable to get IO resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		goto out_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	base = ioremap(res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (!base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		dev_err(dev, "Unable to map Efuse registers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		goto out_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	/* Fetch efuse-settings. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	prop = of_find_property(dev->of_node, "ti,efuse-settings", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (!prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		dev_err(dev, "No 'ti,efuse-settings' property found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	proplen = prop->length / sizeof(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	data->num_vdd_table = proplen / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	/* Verify for corrupted OPP entries in dt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	if (data->num_vdd_table * 2 * sizeof(int) != prop->length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		dev_err(dev, "Invalid 'ti,efuse-settings'\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	ret = of_property_read_u32(dev->of_node, "ti,absolute-max-voltage-uv",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 				   &data->vdd_absolute_max_voltage_uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		dev_err(dev, "ti,absolute-max-voltage-uv is missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	table = kcalloc(data->num_vdd_table, sizeof(*data->vdd_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 			GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (!table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	data->vdd_table = table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	val = prop->value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	for (i = 0; i < data->num_vdd_table; i++, table++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		u32 efuse_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		u32 tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		table->reference_uv = be32_to_cpup(val++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		efuse_offset = be32_to_cpup(val++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		tmp = readl(base + efuse_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		tmp &= of_data->efuse_voltage_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		tmp >>= __ffs(of_data->efuse_voltage_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		table->optimized_uv = of_data->efuse_voltage_uv ? tmp :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 					tmp * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		dev_dbg(dev, "[%d] efuse=0x%08x volt_table=%d vset=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			i, efuse_offset, table->reference_uv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			table->optimized_uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		 * Some older samples might not have optimized efuse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		 * Use reference voltage for those - just add debug message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		 * for them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		if (!table->optimized_uv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			dev_dbg(dev, "[%d] efuse=0x%08x volt_table=%d:vset0\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 				i, efuse_offset, table->reference_uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			table->optimized_uv = table->reference_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	iounmap(base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) out_map:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)  * _free_optimized_voltages() - free resources for optvoltages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)  * @dev:	device for which we need to free info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)  * @data:	data specific to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static void _free_optimized_voltages(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 				     struct ti_opp_supply_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	kfree(data->vdd_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	data->vdd_table = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	data->num_vdd_table = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  * _get_optimal_vdd_voltage() - Finds optimal voltage for the supply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * @dev:	device for which we need to find info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  * @data:	data specific to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  * @reference_uv:	reference voltage (OPP voltage) for which we need value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  * Return: if a match is found, return optimized voltage, else return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)  * reference_uv, also return reference_uv if no optimization is needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static int _get_optimal_vdd_voltage(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 				    struct ti_opp_supply_data *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 				    int reference_uv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	struct ti_opp_supply_optimum_voltage_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	if (!data->num_vdd_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		return reference_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	table = data->vdd_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (!table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	/* Find a exact match - this list is usually very small */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	for (i = 0; i < data->num_vdd_table; i++, table++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		if (table->reference_uv == reference_uv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			return table->optimized_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	/* IF things are screwed up, we'd make a mess on console.. ratelimit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	dev_err_ratelimited(dev, "%s: Failed optimized voltage match for %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			    __func__, reference_uv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	return reference_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static int _opp_set_voltage(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			    struct dev_pm_opp_supply *supply,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			    int new_target_uv, struct regulator *reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			    char *reg_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	unsigned long vdd_uv, uv_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	if (new_target_uv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		vdd_uv = new_target_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		vdd_uv = supply->u_volt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	 * If we do have an absolute max voltage specified, then we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	 * use that voltage instead to allow for cases where the voltage rails
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	 * are ganged (example if we set the max for an opp as 1.12v, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	 * the absolute max is 1.5v, for another rail to get 1.25v, it cannot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	 * be achieved if the regulator is constrainted to max of 1.12v, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	 * if it can function at 1.25v
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	if (opp_data.vdd_absolute_max_voltage_uv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		uv_max = opp_data.vdd_absolute_max_voltage_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		uv_max = supply->u_volt_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (vdd_uv > uv_max ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	    vdd_uv < supply->u_volt_min ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	    supply->u_volt_min > uv_max) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		dev_warn(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			 "Invalid range voltages [Min:%lu target:%lu Max:%lu]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			 supply->u_volt_min, vdd_uv, uv_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	dev_dbg(dev, "%s scaling to %luuV[min %luuV max %luuV]\n", reg_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		vdd_uv, supply->u_volt_min,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		uv_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	ret = regulator_set_voltage_triplet(reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 					    supply->u_volt_min,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 					    vdd_uv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 					    uv_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		dev_err(dev, "%s failed for %luuV[min %luuV max %luuV]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 			reg_name, vdd_uv, supply->u_volt_min,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 			uv_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)  * ti_opp_supply_set_opp() - do the opp supply transition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)  * @data:	information on regulators and new and old opps provided by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)  *		opp core to use in transition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)  * Return: If successful, 0, else appropriate error value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static int ti_opp_supply_set_opp(struct dev_pm_set_opp_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	struct dev_pm_opp_supply *old_supply_vdd = &data->old_opp.supplies[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	struct dev_pm_opp_supply *old_supply_vbb = &data->old_opp.supplies[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	struct dev_pm_opp_supply *new_supply_vdd = &data->new_opp.supplies[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	struct dev_pm_opp_supply *new_supply_vbb = &data->new_opp.supplies[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	struct device *dev = data->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	unsigned long old_freq = data->old_opp.rate, freq = data->new_opp.rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	struct clk *clk = data->clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	struct regulator *vdd_reg = data->regulators[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	struct regulator *vbb_reg = data->regulators[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	int vdd_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	vdd_uv = _get_optimal_vdd_voltage(dev, &opp_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 					  new_supply_vdd->u_volt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	if (new_supply_vdd->u_volt_min < vdd_uv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		new_supply_vdd->u_volt_min = vdd_uv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	/* Scaling up? Scale voltage before frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	if (freq > old_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		ret = _opp_set_voltage(dev, new_supply_vdd, vdd_uv, vdd_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 				       "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 			goto restore_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 			goto restore_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	/* Change frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	dev_dbg(dev, "%s: switching OPP: %lu Hz --> %lu Hz\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		__func__, old_freq, freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	ret = clk_set_rate(clk, freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 			ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		goto restore_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	/* Scaling down? Scale voltage after frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	if (freq < old_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 			goto restore_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		ret = _opp_set_voltage(dev, new_supply_vdd, vdd_uv, vdd_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 				       "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			goto restore_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) restore_freq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	ret = clk_set_rate(clk, old_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 			__func__, old_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) restore_voltage:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	/* This shouldn't harm even if the voltages weren't updated earlier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	if (old_supply_vdd->u_volt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		ret = _opp_set_voltage(dev, old_supply_vbb, 0, vbb_reg, "vbb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		ret = _opp_set_voltage(dev, old_supply_vdd, 0, vdd_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 				       "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) static const struct ti_opp_supply_of_data omap_generic_of_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static const struct ti_opp_supply_of_data omap_omap5_of_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	.flags = OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	.efuse_voltage_mask = 0xFFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	.efuse_voltage_uv = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static const struct ti_opp_supply_of_data omap_omap5core_of_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	.flags = OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE | OPPDM_HAS_NO_ABB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	.efuse_voltage_mask = 0xFFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	.efuse_voltage_uv = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static const struct of_device_id ti_opp_supply_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	{.compatible = "ti,omap-opp-supply", .data = &omap_generic_of_data},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	{.compatible = "ti,omap5-opp-supply", .data = &omap_omap5_of_data},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	{.compatible = "ti,omap5-core-opp-supply",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	 .data = &omap_omap5core_of_data},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) MODULE_DEVICE_TABLE(of, ti_opp_supply_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int ti_opp_supply_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	struct device *cpu_dev = get_cpu_device(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	const struct of_device_id *match;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	const struct ti_opp_supply_of_data *of_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	match = of_match_device(ti_opp_supply_of_match, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	if (!match) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		/* We do not expect this to happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 		dev_err(dev, "%s: Unable to match device\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	if (!match->data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		/* Again, unlikely.. but mistakes do happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 		dev_err(dev, "%s: Bad data in match\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	of_data = match->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	dev_set_drvdata(dev, (void *)of_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	/* If we need optimized voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	if (of_data->flags & OPPDM_EFUSE_CLASS0_OPTIMIZED_VOLTAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		ret = _store_optimized_voltages(dev, &opp_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	ret = PTR_ERR_OR_ZERO(dev_pm_opp_register_set_opp_helper(cpu_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 								 ti_opp_supply_set_opp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		_free_optimized_voltages(dev, &opp_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static struct platform_driver ti_opp_supply_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	.probe = ti_opp_supply_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 		   .name = "ti_opp_supply",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 		   .of_match_table = of_match_ptr(ti_opp_supply_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 		   },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) module_platform_driver(ti_opp_supply_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) MODULE_DESCRIPTION("Texas Instruments OMAP OPP Supply driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) MODULE_AUTHOR("Texas Instruments Inc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) MODULE_LICENSE("GPL v2");