1/*
2 * Legacy platform_data quirks
3 *
4 * Copyright (C) 2013 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <linux/clk.h>
11#include <linux/davinci_emac.h>
12#include <linux/gpio.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/of_platform.h>
16#include <linux/ti_wilink_st.h>
17
18#include <linux/platform_data/pinctrl-single.h>
19#include <linux/platform_data/iommu-omap.h>
20
21#include "common.h"
22#include "common-board-devices.h"
23#include "dss-common.h"
24#include "control.h"
25#include "omap_device.h"
26#include "omap-secure.h"
27#include "soc.h"
28
29struct pdata_init {
30	const char *compatible;
31	void (*fn)(void);
32};
33
34struct of_dev_auxdata omap_auxdata_lookup[];
35static struct twl4030_gpio_platform_data twl_gpio_auxdata;
36
37#ifdef CONFIG_MACH_NOKIA_N8X0
38static void __init omap2420_n8x0_legacy_init(void)
39{
40	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
41}
42#else
43#define omap2420_n8x0_legacy_init	NULL
44#endif
45
46#ifdef CONFIG_ARCH_OMAP3
47static void __init hsmmc2_internal_input_clk(void)
48{
49	u32 reg;
50
51	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
52	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
53	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
54}
55
56static struct iommu_platform_data omap3_iommu_pdata = {
57	.reset_name = "mmu",
58	.assert_reset = omap_device_assert_hardreset,
59	.deassert_reset = omap_device_deassert_hardreset,
60};
61
62static int omap3_sbc_t3730_twl_callback(struct device *dev,
63					   unsigned gpio,
64					   unsigned ngpio)
65{
66	int res;
67
68	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
69			       "wlan pwr");
70	if (res)
71		return res;
72
73	gpio_export(gpio, 0);
74
75	return 0;
76}
77
78static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
79{
80	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
81
82	if (err) {
83		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
84			hub_name, err);
85		return;
86	}
87
88	gpio_export(gpio, 0);
89
90	udelay(10);
91	gpio_set_value(gpio, 1);
92	msleep(1);
93}
94
95static void __init omap3_sbc_t3730_twl_init(void)
96{
97	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
98}
99
100static void __init omap3_sbc_t3730_legacy_init(void)
101{
102	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
103}
104
105static void __init omap3_sbc_t3530_legacy_init(void)
106{
107	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
108}
109
110struct ti_st_plat_data wilink_pdata = {
111	.nshutdown_gpio = 137,
112	.dev_name = "/dev/ttyO1",
113	.flow_cntrl = 1,
114	.baud_rate = 300000,
115};
116
117static struct platform_device wl18xx_device = {
118	.name	= "kim",
119	.id	= -1,
120	.dev	= {
121		.platform_data = &wilink_pdata,
122	}
123};
124
125static struct platform_device btwilink_device = {
126	.name	= "btwilink",
127	.id	= -1,
128};
129
130static void __init omap3_igep0020_rev_f_legacy_init(void)
131{
132	platform_device_register(&wl18xx_device);
133	platform_device_register(&btwilink_device);
134}
135
136static void __init omap3_igep0030_rev_g_legacy_init(void)
137{
138	platform_device_register(&wl18xx_device);
139	platform_device_register(&btwilink_device);
140}
141
142static void __init omap3_evm_legacy_init(void)
143{
144	hsmmc2_internal_input_clk();
145}
146
147static void am35xx_enable_emac_int(void)
148{
149	u32 v;
150
151	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
152	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
153	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
154	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
155	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
156}
157
158static void am35xx_disable_emac_int(void)
159{
160	u32 v;
161
162	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
163	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
164	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
165	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
166}
167
168static struct emac_platform_data am35xx_emac_pdata = {
169	.interrupt_enable	= am35xx_enable_emac_int,
170	.interrupt_disable	= am35xx_disable_emac_int,
171};
172
173static void __init am35xx_emac_reset(void)
174{
175	u32 v;
176
177	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
178	v &= ~AM35XX_CPGMACSS_SW_RST;
179	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
180	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
181}
182
183static struct gpio cm_t3517_wlan_gpios[] __initdata = {
184	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
185	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
186};
187
188static void __init omap3_sbc_t3517_wifi_init(void)
189{
190	int err = gpio_request_array(cm_t3517_wlan_gpios,
191				ARRAY_SIZE(cm_t3517_wlan_gpios));
192	if (err) {
193		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
194		return;
195	}
196
197	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
198	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
199
200	msleep(100);
201	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
202}
203
204static void __init omap3_sbc_t3517_legacy_init(void)
205{
206	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
207	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
208	am35xx_emac_reset();
209	hsmmc2_internal_input_clk();
210	omap3_sbc_t3517_wifi_init();
211}
212
213static void __init am3517_evm_legacy_init(void)
214{
215	am35xx_emac_reset();
216}
217
218static struct platform_device omap3_rom_rng_device = {
219	.name		= "omap3-rom-rng",
220	.id		= -1,
221	.dev	= {
222		.platform_data	= rx51_secure_rng_call,
223	},
224};
225
226static void __init nokia_n900_legacy_init(void)
227{
228	hsmmc2_internal_input_clk();
229
230	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
231		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
232			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
233			/* set IBE to 1 */
234			rx51_secure_update_aux_cr(BIT(6), 0);
235		} else {
236			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
237			pr_warn("Thumb binaries may crash randomly without this workaround\n");
238		}
239
240		pr_info("RX-51: Registring OMAP3 HWRNG device\n");
241		platform_device_register(&omap3_rom_rng_device);
242
243	}
244}
245
246static void __init omap3_tao3530_legacy_init(void)
247{
248	hsmmc2_internal_input_clk();
249}
250#endif /* CONFIG_ARCH_OMAP3 */
251
252#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
253static struct iommu_platform_data omap4_iommu_pdata = {
254	.reset_name = "mmu_cache",
255	.assert_reset = omap_device_assert_hardreset,
256	.deassert_reset = omap_device_deassert_hardreset,
257};
258#endif
259
260#ifdef CONFIG_SOC_OMAP5
261static void __init omap5_uevm_legacy_init(void)
262{
263}
264#endif
265
266static struct pcs_pdata pcs_pdata;
267
268void omap_pcs_legacy_init(int irq, void (*rearm)(void))
269{
270	pcs_pdata.irq = irq;
271	pcs_pdata.rearm = rearm;
272}
273
274/*
275 * GPIOs for TWL are initialized by the I2C bus and need custom
276 * handing until DSS has device tree bindings.
277 */
278void omap_auxdata_legacy_init(struct device *dev)
279{
280	if (dev->platform_data)
281		return;
282
283	if (strcmp("twl4030-gpio", dev_name(dev)))
284		return;
285
286	dev->platform_data = &twl_gpio_auxdata;
287}
288
289/*
290 * Few boards still need auxdata populated before we populate
291 * the dev entries in of_platform_populate().
292 */
293static struct pdata_init auxdata_quirks[] __initdata = {
294#ifdef CONFIG_SOC_OMAP2420
295	{ "nokia,n800", omap2420_n8x0_legacy_init, },
296	{ "nokia,n810", omap2420_n8x0_legacy_init, },
297	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
298#endif
299#ifdef CONFIG_ARCH_OMAP3
300	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
301#endif
302	{ /* sentinel */ },
303};
304
305struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
306#ifdef CONFIG_MACH_NOKIA_N8X0
307	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
308	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
309	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
310#endif
311#ifdef CONFIG_ARCH_OMAP3
312	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
313	OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
314	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
315	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
316		       &omap3_iommu_pdata),
317	/* Only on am3517 */
318	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
319	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
320		       &am35xx_emac_pdata),
321#endif
322#ifdef CONFIG_ARCH_OMAP4
323	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
324	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
325#endif
326#ifdef CONFIG_SOC_OMAP5
327	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
328	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
329#endif
330#ifdef CONFIG_SOC_DRA7XX
331	OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
332#endif
333#ifdef CONFIG_SOC_AM43XX
334	OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
335#endif
336#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
337	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
338		       &omap4_iommu_pdata),
339	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
340		       &omap4_iommu_pdata),
341#endif
342	{ /* sentinel */ },
343};
344
345/*
346 * Few boards still need to initialize some legacy devices with
347 * platform data until the drivers support device tree.
348 */
349static struct pdata_init pdata_quirks[] __initdata = {
350#ifdef CONFIG_ARCH_OMAP3
351	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
352	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
353	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
354	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
355	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
356	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
357	{ "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
358	{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
359	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
360	{ "ti,am3517-evm", am3517_evm_legacy_init, },
361	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
362#endif
363#ifdef CONFIG_SOC_OMAP5
364	{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
365#endif
366	{ /* sentinel */ },
367};
368
369static void pdata_quirks_check(struct pdata_init *quirks)
370{
371	while (quirks->compatible) {
372		if (of_machine_is_compatible(quirks->compatible)) {
373			if (quirks->fn)
374				quirks->fn();
375			break;
376		}
377		quirks++;
378	}
379}
380
381void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
382{
383	omap_sdrc_init(NULL, NULL);
384	pdata_quirks_check(auxdata_quirks);
385	of_platform_populate(NULL, omap_dt_match_table,
386			     omap_auxdata_lookup, NULL);
387	pdata_quirks_check(pdata_quirks);
388}
389