Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * PRU-ICSS platform driver for various TI SoCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2014-2020 Texas Instruments Incorporated - http://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Author(s):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *	Suman Anna <s-anna@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *	Andrew F. Davis <afd@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/clk-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mfd/syscon.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/of_address.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/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/pruss_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * struct pruss_private_data - PRUSS driver private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * @has_no_sharedram: flag to indicate the absence of PRUSS Shared Data RAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * @has_core_mux_clock: flag to indicate the presence of PRUSS core clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) struct pruss_private_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	bool has_no_sharedram;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	bool has_core_mux_clock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static void pruss_of_free_clk_provider(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct device_node *clk_mux_np = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	of_clk_del_provider(clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	of_node_put(clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) static int pruss_clk_mux_setup(struct pruss *pruss, struct clk *clk_mux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 			       char *mux_name, struct device_node *clks_np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct device_node *clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct device *dev = pruss->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	char *clk_mux_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	unsigned int num_parents;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	const char **parent_names;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	void __iomem *reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	u32 reg_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	clk_mux_np = of_get_child_by_name(clks_np, mux_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	if (!clk_mux_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		dev_err(dev, "%pOF is missing its '%s' node\n", clks_np,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 			mux_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	num_parents = of_clk_get_parent_count(clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (num_parents < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		dev_err(dev, "mux-clock %pOF must have parents\n", clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	parent_names = devm_kcalloc(dev, sizeof(*parent_names), num_parents,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 				    GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (!parent_names) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	of_clk_parent_fill(clk_mux_np, parent_names, num_parents);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	clk_mux_name = devm_kasprintf(dev, GFP_KERNEL, "%s.%pOFn",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 				      dev_name(dev), clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	if (!clk_mux_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	ret = of_property_read_u32(clk_mux_np, "reg", &reg_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	reg = pruss->cfg_base + reg_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	clk_mux = clk_register_mux(NULL, clk_mux_name, parent_names,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 				   num_parents, 0, reg, 0, 1, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (IS_ERR(clk_mux)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		ret = PTR_ERR(clk_mux);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	ret = devm_add_action_or_reset(dev, (void(*)(void *))clk_unregister_mux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 				       clk_mux);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		dev_err(dev, "failed to add clkmux unregister action %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	ret = of_clk_add_provider(clk_mux_np, of_clk_src_simple_get, clk_mux);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	ret = devm_add_action_or_reset(dev, pruss_of_free_clk_provider,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 				       clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		dev_err(dev, "failed to add clkmux free action %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		goto put_clk_mux_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) put_clk_mux_np:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	of_node_put(clk_mux_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static int pruss_clk_init(struct pruss *pruss, struct device_node *cfg_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	const struct pruss_private_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	struct device_node *clks_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct device *dev = pruss->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	data = of_device_get_match_data(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (IS_ERR(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	clks_np = of_get_child_by_name(cfg_node, "clocks");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (!clks_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		dev_err(dev, "%pOF is missing its 'clocks' node\n", cfg_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (data && data->has_core_mux_clock) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		ret = pruss_clk_mux_setup(pruss, pruss->core_clk_mux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 					  "coreclk-mux", clks_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			dev_err(dev, "failed to setup coreclk-mux\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			goto put_clks_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	ret = pruss_clk_mux_setup(pruss, pruss->iep_clk_mux, "iepclk-mux",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 				  clks_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		dev_err(dev, "failed to setup iepclk-mux\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		goto put_clks_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) put_clks_node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	of_node_put(clks_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static struct regmap_config regmap_conf = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	.reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	.val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	.reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int pruss_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	struct device_node *np = dev_of_node(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct device_node *child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct pruss *pruss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	struct resource res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	int ret, i, index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	const struct pruss_private_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	const char *mem_names[PRUSS_MEM_MAX] = { "dram0", "dram1", "shrdram2" };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	data = of_device_get_match_data(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (IS_ERR(data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		dev_err(dev, "missing private data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		return -ENODEV;
^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) 	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		dev_err(dev, "failed to set the DMA coherent mask");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	pruss = devm_kzalloc(dev, sizeof(*pruss), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (!pruss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	pruss->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	child = of_get_child_by_name(np, "memories");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (!child) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		dev_err(dev, "%pOF is missing its 'memories' node\n", child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	for (i = 0; i < PRUSS_MEM_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		 * On AM437x one of two PRUSS units don't contain Shared RAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		 * skip it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		if (data && data->has_no_sharedram && i == PRUSS_MEM_SHRD_RAM2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		index = of_property_match_string(child, "reg-names",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 						 mem_names[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		if (index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 			return index;
^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) 		if (of_address_to_resource(child, index, &res)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		pruss->mem_regions[i].va = devm_ioremap(dev, res.start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 							resource_size(&res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		if (!pruss->mem_regions[i].va) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 			dev_err(dev, "failed to parse and map memory resource %d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 				i, mem_names[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		pruss->mem_regions[i].pa = res.start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		pruss->mem_regions[i].size = resource_size(&res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		dev_dbg(dev, "memory %8s: pa %pa size 0x%zx va %pK\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 			mem_names[i], &pruss->mem_regions[i].pa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 			pruss->mem_regions[i].size, pruss->mem_regions[i].va);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	platform_set_drvdata(pdev, pruss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	ret = pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		dev_err(dev, "couldn't enable module\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		pm_runtime_put_noidle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		goto rpm_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	child = of_get_child_by_name(np, "cfg");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (!child) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		dev_err(dev, "%pOF is missing its 'cfg' node\n", child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		goto rpm_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	if (of_address_to_resource(child, 0, &res)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		goto node_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	pruss->cfg_base = devm_ioremap(dev, res.start, resource_size(&res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	if (!pruss->cfg_base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		goto node_put;
^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) 	regmap_conf.name = kasprintf(GFP_KERNEL, "%pOFn@%llx", child,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 				     (u64)res.start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	regmap_conf.max_register = resource_size(&res) - 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	pruss->cfg_regmap = devm_regmap_init_mmio(dev, pruss->cfg_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 						  &regmap_conf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	kfree(regmap_conf.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	if (IS_ERR(pruss->cfg_regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		dev_err(dev, "regmap_init_mmio failed for cfg, ret = %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 			PTR_ERR(pruss->cfg_regmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		ret = PTR_ERR(pruss->cfg_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		goto node_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	ret = pruss_clk_init(pruss, child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		dev_err(dev, "failed to setup coreclk-mux\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		goto node_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	ret = devm_of_platform_populate(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		dev_err(dev, "failed to register child devices\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		goto node_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) node_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	of_node_put(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) rpm_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) rpm_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static int pruss_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	devm_of_platform_depopulate(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /* instance-specific driver private data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static const struct pruss_private_data am437x_pruss1_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	.has_no_sharedram = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static const struct pruss_private_data am437x_pruss0_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	.has_no_sharedram = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static const struct pruss_private_data am65x_j721e_pruss_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	.has_core_mux_clock = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static const struct of_device_id pruss_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	{ .compatible = "ti,am3356-pruss" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	{ .compatible = "ti,am4376-pruss0", .data = &am437x_pruss0_data, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	{ .compatible = "ti,am4376-pruss1", .data = &am437x_pruss1_data, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	{ .compatible = "ti,am5728-pruss" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	{ .compatible = "ti,k2g-pruss" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	{ .compatible = "ti,am654-icssg", .data = &am65x_j721e_pruss_data, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	{ .compatible = "ti,j721e-icssg", .data = &am65x_j721e_pruss_data, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) MODULE_DEVICE_TABLE(of, pruss_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static struct platform_driver pruss_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		.name = "pruss",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		.of_match_table = pruss_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	.probe  = pruss_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	.remove = pruss_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) module_platform_driver(pruss_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) MODULE_AUTHOR("Suman Anna <s-anna@ti.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) MODULE_DESCRIPTION("PRU-ICSS Subsystem Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) MODULE_LICENSE("GPL v2");