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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/wl12xx.h>
17
18#include <linux/platform_data/pinctrl-single.h>
19#include <linux/platform_data/iommu-omap.h>
20
21#include "am35xx.h"
22#include "common.h"
23#include "common-board-devices.h"
24#include "dss-common.h"
25#include "control.h"
26#include "omap_device.h"
27#include "omap-secure.h"
28#include "soc.h"
29
30struct pdata_init {
31 const char *compatible;
32 void (*fn)(void);
33};
34
35struct of_dev_auxdata omap_auxdata_lookup[];
36static struct twl4030_gpio_platform_data twl_gpio_auxdata;
37
38#if IS_ENABLED(CONFIG_WL12XX)
39
40static struct wl12xx_platform_data wl12xx __initdata;
41
42static void __init __used legacy_init_wl12xx(unsigned ref_clock,
43 unsigned tcxo_clock,
44 int gpio)
45{
46 int res;
47
48 wl12xx.board_ref_clock = ref_clock;
49 wl12xx.board_tcxo_clock = tcxo_clock;
50 wl12xx.irq = gpio_to_irq(gpio);
51
52 res = wl12xx_set_platform_data(&wl12xx);
53 if (res) {
54 pr_err("error setting wl12xx data: %d\n", res);
55 return;
56 }
57}
58#else
59static inline void legacy_init_wl12xx(unsigned ref_clock,
60 unsigned tcxo_clock,
61 int gpio)
62{
63}
64#endif
65
66#ifdef CONFIG_MACH_NOKIA_N8X0
67static void __init omap2420_n8x0_legacy_init(void)
68{
69 omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
70}
71#else
72#define omap2420_n8x0_legacy_init NULL
73#endif
74
75#ifdef CONFIG_ARCH_OMAP3
76static void __init hsmmc2_internal_input_clk(void)
77{
78 u32 reg;
79
80 reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
81 reg |= OMAP2_MMCSDIO2ADPCLKISEL;
82 omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
83}
84
85static struct iommu_platform_data omap3_iommu_pdata = {
86 .reset_name = "mmu",
87 .assert_reset = omap_device_assert_hardreset,
88 .deassert_reset = omap_device_deassert_hardreset,
89};
90
91static int omap3_sbc_t3730_twl_callback(struct device *dev,
92 unsigned gpio,
93 unsigned ngpio)
94{
95 int res;
96
97 res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
98 "wlan pwr");
99 if (res)
100 return res;
101
102 gpio_export(gpio, 0);
103
104 return 0;
105}
106
107static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
108{
109 int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
110
111 if (err) {
112 pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
113 hub_name, err);
114 return;
115 }
116
117 gpio_export(gpio, 0);
118
119 udelay(10);
120 gpio_set_value(gpio, 1);
121 msleep(1);
122}
123
124static void __init omap3_sbc_t3730_twl_init(void)
125{
126 twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
127}
128
129static void __init omap3_sbc_t3730_legacy_init(void)
130{
131 omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
132 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
133 omap_ads7846_init(1, 57, 0, NULL);
134}
135
136static void __init omap3_sbc_t3530_legacy_init(void)
137{
138 omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
139 omap_ads7846_init(1, 57, 0, NULL);
140}
141
142static void __init omap3_igep0020_legacy_init(void)
143{
144}
145
146static void __init omap3_evm_legacy_init(void)
147{
148 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
149}
150
151static void __init omap3_zoom_legacy_init(void)
152{
153 legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
154}
155
156static void am35xx_enable_emac_int(void)
157{
158 u32 v;
159
160 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
161 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
162 AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
163 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
164 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
165}
166
167static void am35xx_disable_emac_int(void)
168{
169 u32 v;
170
171 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
172 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
173 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
174 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
175}
176
177static struct emac_platform_data am35xx_emac_pdata = {
178 .interrupt_enable = am35xx_enable_emac_int,
179 .interrupt_disable = am35xx_disable_emac_int,
180};
181
182static void __init am35xx_emac_reset(void)
183{
184 u32 v;
185
186 v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
187 v &= ~AM35XX_CPGMACSS_SW_RST;
188 omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
189 omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
190}
191
192static struct gpio cm_t3517_wlan_gpios[] __initdata = {
193 { 56, GPIOF_OUT_INIT_HIGH, "wlan pwr" },
194 { 4, GPIOF_OUT_INIT_HIGH, "xcvr noe" },
195};
196
197static void __init omap3_sbc_t3517_wifi_init(void)
198{
199 int err = gpio_request_array(cm_t3517_wlan_gpios,
200 ARRAY_SIZE(cm_t3517_wlan_gpios));
201 if (err) {
202 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
203 return;
204 }
205
206 gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
207 gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
208
209 msleep(100);
210 gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
211}
212
213static void __init omap3_sbc_t3517_legacy_init(void)
214{
215 omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
216 omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
217 am35xx_emac_reset();
218 hsmmc2_internal_input_clk();
219 omap3_sbc_t3517_wifi_init();
220 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145);
221 omap_ads7846_init(1, 57, 0, NULL);
222}
223
224static void __init am3517_evm_legacy_init(void)
225{
226 am35xx_emac_reset();
227}
228
229static void __init nokia_n900_legacy_init(void)
230{
231 hsmmc2_internal_input_clk();
232
233 if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
234 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
235 pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
236 /* set IBE to 1 */
237 rx51_secure_update_aux_cr(BIT(6), 0);
238 } else {
239 pr_warning("RX-51: Not enabling ARM errata 430973 workaround\n");
240 pr_warning("Thumb binaries may crash randomly without this workaround\n");
241 }
242 }
243}
244#endif /* CONFIG_ARCH_OMAP3 */
245
246#ifdef CONFIG_ARCH_OMAP4
247static void __init omap4_sdp_legacy_init(void)
248{
249 legacy_init_wl12xx(WL12XX_REFCLOCK_26,
250 WL12XX_TCXOCLOCK_26, 53);
251}
252
253static void __init omap4_panda_legacy_init(void)
254{
255 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
256}
257#endif
258
259#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
260static struct iommu_platform_data omap4_iommu_pdata = {
261 .reset_name = "mmu_cache",
262 .assert_reset = omap_device_assert_hardreset,
263 .deassert_reset = omap_device_deassert_hardreset,
264};
265#endif
266
267#ifdef CONFIG_SOC_AM33XX
268static void __init am335x_evmsk_legacy_init(void)
269{
270 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
271}
272#endif
273
274#ifdef CONFIG_SOC_OMAP5
275static void __init omap5_uevm_legacy_init(void)
276{
277}
278#endif
279
280static struct pcs_pdata pcs_pdata;
281
282void omap_pcs_legacy_init(int irq, void (*rearm)(void))
283{
284 pcs_pdata.irq = irq;
285 pcs_pdata.rearm = rearm;
286}
287
288/*
289 * GPIOs for TWL are initialized by the I2C bus and need custom
290 * handing until DSS has device tree bindings.
291 */
292void omap_auxdata_legacy_init(struct device *dev)
293{
294 if (dev->platform_data)
295 return;
296
297 if (strcmp("twl4030-gpio", dev_name(dev)))
298 return;
299
300 dev->platform_data = &twl_gpio_auxdata;
301}
302
303/*
304 * Few boards still need auxdata populated before we populate
305 * the dev entries in of_platform_populate().
306 */
307static struct pdata_init auxdata_quirks[] __initdata = {
308#ifdef CONFIG_SOC_OMAP2420
309 { "nokia,n800", omap2420_n8x0_legacy_init, },
310 { "nokia,n810", omap2420_n8x0_legacy_init, },
311 { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
312#endif
313#ifdef CONFIG_ARCH_OMAP3
314 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
315#endif
316 { /* sentinel */ },
317};
318
319struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
320#ifdef CONFIG_MACH_NOKIA_N8X0
321 OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
322#endif
323#ifdef CONFIG_ARCH_OMAP3
324 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
325 OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
326 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
327 OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
328 &omap3_iommu_pdata),
329 /* Only on am3517 */
330 OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
331 OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
332 &am35xx_emac_pdata),
333#endif
334#ifdef CONFIG_ARCH_OMAP4
335 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
336 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
337#endif
338#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
339 OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
340 &omap4_iommu_pdata),
341 OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
342 &omap4_iommu_pdata),
343#endif
344 { /* sentinel */ },
345};
346
347/*
348 * Few boards still need to initialize some legacy devices with
349 * platform data until the drivers support device tree.
350 */
351static struct pdata_init pdata_quirks[] __initdata = {
352#ifdef CONFIG_ARCH_OMAP3
353 { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
354 { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
355 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
356 { "nokia,omap3-n900", nokia_n900_legacy_init, },
357 { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
358 { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
359 { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
360 { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
361 { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
362 { "ti,am3517-evm", am3517_evm_legacy_init, },
363#endif
364#ifdef CONFIG_ARCH_OMAP4
365 { "ti,omap4-sdp", omap4_sdp_legacy_init, },
366 { "ti,omap4-panda", omap4_panda_legacy_init, },
367#endif
368#ifdef CONFIG_SOC_AM33XX
369 { "ti,am335x-evmsk", am335x_evmsk_legacy_init, },
370#endif
371#ifdef CONFIG_SOC_OMAP5
372 { "ti,omap5-uevm", omap5_uevm_legacy_init, },
373#endif
374 { /* sentinel */ },
375};
376
377static void pdata_quirks_check(struct pdata_init *quirks)
378{
379 while (quirks->compatible) {
380 if (of_machine_is_compatible(quirks->compatible)) {
381 if (quirks->fn)
382 quirks->fn();
383 break;
384 }
385 quirks++;
386 }
387}
388
389void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
390{
391 omap_sdrc_init(NULL, NULL);
392 pdata_quirks_check(auxdata_quirks);
393 of_platform_populate(NULL, omap_dt_match_table,
394 omap_auxdata_lookup, NULL);
395 pdata_quirks_check(pdata_quirks);
396}