blob: aa903a31dd433e6abbc84f2de39cab022d29f7f6 [file] [log] [blame]
Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001// SPDX-License-Identifier: GPL-2.0-only
Dmitry Baryshkovd6315942008-06-22 12:01:58 +01002/*
3 * Toshiba TC6393XB SoC support
4 *
5 * Copyright(c) 2005-2006 Chris Humbert
6 * Copyright(c) 2005 Dirk Opfer
7 * Copyright(c) 2005 Ian Molton <spyro@f2s.com>
8 * Copyright(c) 2007 Dmitry Baryshkov
9 *
10 * Based on code written by Sharp/Lineo for 2.4 kernels
11 * Based on locomo.c
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010012 */
13
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/io.h>
17#include <linux/irq.h>
18#include <linux/platform_device.h>
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010019#include <linux/clk.h>
Ian Molton25d6cbd82008-08-10 23:32:07 +020020#include <linux/err.h>
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +010021#include <linux/mfd/core.h>
22#include <linux/mfd/tmio.h>
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010023#include <linux/mfd/tc6393xb.h>
Linus Walleij4e125f62016-03-30 10:48:06 +020024#include <linux/gpio/driver.h>
Linus Walleij813c2ae2022-05-07 14:33:31 +020025#include <linux/gpio/machine.h>
26#include <linux/gpio/consumer.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010028
29#define SCR_REVID 0x08 /* b Revision ID */
30#define SCR_ISR 0x50 /* b Interrupt Status */
31#define SCR_IMR 0x52 /* b Interrupt Mask */
32#define SCR_IRR 0x54 /* b Interrupt Routing */
33#define SCR_GPER 0x60 /* w GP Enable */
34#define SCR_GPI_SR(i) (0x64 + (i)) /* b3 GPI Status */
35#define SCR_GPI_IMR(i) (0x68 + (i)) /* b3 GPI INT Mask */
36#define SCR_GPI_EDER(i) (0x6c + (i)) /* b3 GPI Edge Detect Enable */
37#define SCR_GPI_LIR(i) (0x70 + (i)) /* b3 GPI Level Invert */
38#define SCR_GPO_DSR(i) (0x78 + (i)) /* b3 GPO Data Set */
39#define SCR_GPO_DOECR(i) (0x7c + (i)) /* b3 GPO Data OE Control */
40#define SCR_GP_IARCR(i) (0x80 + (i)) /* b3 GP Internal Active Register Control */
41#define SCR_GP_IARLCR(i) (0x84 + (i)) /* b3 GP INTERNAL Active Register Level Control */
42#define SCR_GPI_BCR(i) (0x88 + (i)) /* b3 GPI Buffer Control */
43#define SCR_GPA_IARCR 0x8c /* w GPa Internal Active Register Control */
44#define SCR_GPA_IARLCR 0x90 /* w GPa Internal Active Register Level Control */
45#define SCR_GPA_BCR 0x94 /* w GPa Buffer Control */
46#define SCR_CCR 0x98 /* w Clock Control */
47#define SCR_PLL2CR 0x9a /* w PLL2 Control */
48#define SCR_PLL1CR 0x9c /* l PLL1 Control */
49#define SCR_DIARCR 0xa0 /* b Device Internal Active Register Control */
50#define SCR_DBOCR 0xa1 /* b Device Buffer Off Control */
51#define SCR_FER 0xe0 /* b Function Enable */
52#define SCR_MCR 0xe4 /* w Mode Control */
53#define SCR_CONFIG 0xfc /* b Configuration Control */
54#define SCR_DEBUG 0xff /* b Debug */
55
56#define SCR_CCR_CK32K BIT(0)
57#define SCR_CCR_USBCK BIT(1)
58#define SCR_CCR_UNK1 BIT(4)
59#define SCR_CCR_MCLK_MASK (7 << 8)
60#define SCR_CCR_MCLK_OFF (0 << 8)
61#define SCR_CCR_MCLK_12 (1 << 8)
62#define SCR_CCR_MCLK_24 (2 << 8)
63#define SCR_CCR_MCLK_48 (3 << 8)
64#define SCR_CCR_HCLK_MASK (3 << 12)
65#define SCR_CCR_HCLK_24 (0 << 12)
66#define SCR_CCR_HCLK_48 (1 << 12)
67
68#define SCR_FER_USBEN BIT(0) /* USB host enable */
69#define SCR_FER_LCDCVEN BIT(1) /* polysilicon TFT enable */
70#define SCR_FER_SLCDEN BIT(2) /* SLCD enable */
71
72#define SCR_MCR_RDY_MASK (3 << 0)
73#define SCR_MCR_RDY_OPENDRAIN (0 << 0)
74#define SCR_MCR_RDY_TRISTATE (1 << 0)
75#define SCR_MCR_RDY_PUSHPULL (2 << 0)
76#define SCR_MCR_RDY_UNK BIT(2)
77#define SCR_MCR_RDY_EN BIT(3)
78#define SCR_MCR_INT_MASK (3 << 4)
79#define SCR_MCR_INT_OPENDRAIN (0 << 4)
80#define SCR_MCR_INT_TRISTATE (1 << 4)
81#define SCR_MCR_INT_PUSHPULL (2 << 4)
82#define SCR_MCR_INT_UNK BIT(6)
83#define SCR_MCR_INT_EN BIT(7)
84/* bits 8 - 16 are unknown */
85
86#define TC_GPIO_BIT(i) (1 << (i & 0x7))
87
88/*--------------------------------------------------------------------------*/
89
90struct tc6393xb {
91 void __iomem *scr;
Linus Walleij813c2ae2022-05-07 14:33:31 +020092 struct device *dev;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010093
94 struct gpio_chip gpio;
Linus Walleij813c2ae2022-05-07 14:33:31 +020095 struct gpio_desc *vcc_on;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +010096
97 struct clk *clk; /* 3,6 Mhz */
98
Julia Cartwrightf5139c22017-03-21 17:43:06 -050099 raw_spinlock_t lock; /* protects RMW cycles */
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100100
101 struct {
102 u8 fer;
103 u16 ccr;
104 u8 gpi_bcr[3];
105 u8 gpo_dsr[3];
106 u8 gpo_doecr[3];
107 } suspend_state;
108
109 struct resource rscr;
110 struct resource *iomem;
111 int irq;
112 int irq_base;
113};
114
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100115enum {
116 TC6393XB_CELL_NAND,
Ian Molton25d6cbd82008-08-10 23:32:07 +0200117 TC6393XB_CELL_MMC,
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200118 TC6393XB_CELL_OHCI,
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200119 TC6393XB_CELL_FB,
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100120};
121
122/*--------------------------------------------------------------------------*/
123
124static int tc6393xb_nand_enable(struct platform_device *nand)
125{
Kefeng Wanged835132019-05-09 22:23:39 +0800126 struct tc6393xb *tc6393xb = dev_get_drvdata(nand->dev.parent);
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100127 unsigned long flags;
128
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500129 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100130
131 /* SMD buffer on */
Kefeng Wanged835132019-05-09 22:23:39 +0800132 dev_dbg(nand->dev.parent, "SMD buffer on\n");
Ian Molton25d6cbd82008-08-10 23:32:07 +0200133 tmio_iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100134
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500135 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100136
137 return 0;
138}
139
Rikard Falkebornc4a164f2020-09-22 21:26:59 +0200140static const struct resource tc6393xb_nand_resources[] = {
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100141 {
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100142 .start = 0x1000,
143 .end = 0x1007,
144 .flags = IORESOURCE_MEM,
145 },
146 {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200147 .start = 0x0100,
148 .end = 0x01ff,
149 .flags = IORESOURCE_MEM,
150 },
151 {
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100152 .start = IRQ_TC6393_NAND,
153 .end = IRQ_TC6393_NAND,
154 .flags = IORESOURCE_IRQ,
155 },
156};
157
Rikard Falkebornc4a164f2020-09-22 21:26:59 +0200158static const struct resource tc6393xb_mmc_resources[] = {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200159 {
160 .start = 0x800,
161 .end = 0x9ff,
162 .flags = IORESOURCE_MEM,
163 },
164 {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200165 .start = IRQ_TC6393_MMC,
166 .end = IRQ_TC6393_MMC,
167 .flags = IORESOURCE_IRQ,
168 },
169};
170
Tobias Klauser3446d4b2009-02-17 10:11:42 +0100171static const struct resource tc6393xb_ohci_resources[] = {
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200172 {
173 .start = 0x3000,
174 .end = 0x31ff,
175 .flags = IORESOURCE_MEM,
176 },
177 {
178 .start = 0x0300,
179 .end = 0x03ff,
180 .flags = IORESOURCE_MEM,
181 },
182 {
183 .start = 0x010000,
184 .end = 0x017fff,
185 .flags = IORESOURCE_MEM,
186 },
187 {
188 .start = 0x018000,
189 .end = 0x01ffff,
190 .flags = IORESOURCE_MEM,
191 },
192 {
193 .start = IRQ_TC6393_OHCI,
194 .end = IRQ_TC6393_OHCI,
195 .flags = IORESOURCE_IRQ,
196 },
197};
198
Rikard Falkebornc4a164f2020-09-22 21:26:59 +0200199static const struct resource tc6393xb_fb_resources[] = {
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200200 {
201 .start = 0x5000,
202 .end = 0x51ff,
203 .flags = IORESOURCE_MEM,
204 },
205 {
206 .start = 0x0500,
207 .end = 0x05ff,
208 .flags = IORESOURCE_MEM,
209 },
210 {
211 .start = 0x100000,
212 .end = 0x1fffff,
213 .flags = IORESOURCE_MEM,
214 },
215 {
216 .start = IRQ_TC6393_FB,
217 .end = IRQ_TC6393_FB,
218 .flags = IORESOURCE_IRQ,
219 },
220};
221
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200222static int tc6393xb_ohci_enable(struct platform_device *dev)
223{
224 struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
225 unsigned long flags;
226 u16 ccr;
227 u8 fer;
228
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500229 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200230
231 ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
232 ccr |= SCR_CCR_USBCK;
233 tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
234
235 fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
236 fer |= SCR_FER_USBEN;
237 tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
238
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500239 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200240
241 return 0;
242}
243
244static int tc6393xb_ohci_disable(struct platform_device *dev)
245{
246 struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
247 unsigned long flags;
248 u16 ccr;
249 u8 fer;
250
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500251 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200252
253 fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
254 fer &= ~SCR_FER_USBEN;
255 tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
256
257 ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
258 ccr &= ~SCR_CCR_USBCK;
259 tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
260
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500261 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200262
263 return 0;
264}
265
Dmitry Eremin-Solenikov1a5fb992014-10-24 21:19:57 +0400266static int tc6393xb_ohci_suspend(struct platform_device *dev)
267{
268 struct tc6393xb_platform_data *tcpd = dev_get_platdata(dev->dev.parent);
269
270 /* We can't properly store/restore OHCI state, so fail here */
271 if (tcpd->resume_restore)
272 return -EBUSY;
273
274 return tc6393xb_ohci_disable(dev);
275}
276
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200277static int tc6393xb_fb_enable(struct platform_device *dev)
278{
279 struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
280 unsigned long flags;
281 u16 ccr;
282
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500283 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200284
285 ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
286 ccr &= ~SCR_CCR_MCLK_MASK;
287 ccr |= SCR_CCR_MCLK_48;
288 tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
289
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500290 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200291
292 return 0;
293}
294
295static int tc6393xb_fb_disable(struct platform_device *dev)
296{
297 struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
298 unsigned long flags;
299 u16 ccr;
300
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500301 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200302
303 ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
304 ccr &= ~SCR_CCR_MCLK_MASK;
305 ccr |= SCR_CCR_MCLK_OFF;
306 tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
307
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500308 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200309
310 return 0;
311}
312
313int tc6393xb_lcd_set_power(struct platform_device *fb, bool on)
314{
Kefeng Wanged835132019-05-09 22:23:39 +0800315 struct tc6393xb *tc6393xb = dev_get_drvdata(fb->dev.parent);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200316 u8 fer;
317 unsigned long flags;
318
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500319 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200320
321 fer = ioread8(tc6393xb->scr + SCR_FER);
322 if (on)
323 fer |= SCR_FER_SLCDEN;
324 else
325 fer &= ~SCR_FER_SLCDEN;
326 iowrite8(fer, tc6393xb->scr + SCR_FER);
327
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500328 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200329
330 return 0;
331}
332EXPORT_SYMBOL(tc6393xb_lcd_set_power);
333
334int tc6393xb_lcd_mode(struct platform_device *fb,
335 const struct fb_videomode *mode) {
Kefeng Wanged835132019-05-09 22:23:39 +0800336 struct tc6393xb *tc6393xb = dev_get_drvdata(fb->dev.parent);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200337 unsigned long flags;
338
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500339 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200340
341 iowrite16(mode->pixclock, tc6393xb->scr + SCR_PLL1CR + 0);
342 iowrite16(mode->pixclock >> 16, tc6393xb->scr + SCR_PLL1CR + 2);
343
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500344 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200345
346 return 0;
347}
348EXPORT_SYMBOL(tc6393xb_lcd_mode);
349
Ian Molton64e88672010-01-06 13:51:48 +0100350static int tc6393xb_mmc_enable(struct platform_device *mmc)
351{
Kefeng Wanged835132019-05-09 22:23:39 +0800352 struct tc6393xb *tc6393xb = dev_get_drvdata(mmc->dev.parent);
Ian Molton64e88672010-01-06 13:51:48 +0100353
354 tmio_core_mmc_enable(tc6393xb->scr + 0x200, 0,
355 tc6393xb_mmc_resources[0].start & 0xfffe);
356
357 return 0;
358}
359
360static int tc6393xb_mmc_resume(struct platform_device *mmc)
361{
Kefeng Wanged835132019-05-09 22:23:39 +0800362 struct tc6393xb *tc6393xb = dev_get_drvdata(mmc->dev.parent);
Ian Molton64e88672010-01-06 13:51:48 +0100363
364 tmio_core_mmc_resume(tc6393xb->scr + 0x200, 0,
365 tc6393xb_mmc_resources[0].start & 0xfffe);
366
367 return 0;
368}
369
370static void tc6393xb_mmc_pwr(struct platform_device *mmc, int state)
371{
Kefeng Wanged835132019-05-09 22:23:39 +0800372 struct tc6393xb *tc6393xb = dev_get_drvdata(mmc->dev.parent);
Ian Molton64e88672010-01-06 13:51:48 +0100373
374 tmio_core_mmc_pwr(tc6393xb->scr + 0x200, 0, state);
375}
376
377static void tc6393xb_mmc_clk_div(struct platform_device *mmc, int state)
378{
Kefeng Wanged835132019-05-09 22:23:39 +0800379 struct tc6393xb *tc6393xb = dev_get_drvdata(mmc->dev.parent);
Ian Molton64e88672010-01-06 13:51:48 +0100380
381 tmio_core_mmc_clk_div(tc6393xb->scr + 0x200, 0, state);
382}
383
384static struct tmio_mmc_data tc6393xb_mmc_data = {
385 .hclk = 24000000,
386 .set_pwr = tc6393xb_mmc_pwr,
387 .set_clk_div = tc6393xb_mmc_clk_div,
388};
389
Bill Pembertona9e9ce42012-11-19 13:24:21 -0500390static struct mfd_cell tc6393xb_cells[] = {
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100391 [TC6393XB_CELL_NAND] = {
392 .name = "tmio-nand",
393 .enable = tc6393xb_nand_enable,
394 .num_resources = ARRAY_SIZE(tc6393xb_nand_resources),
395 .resources = tc6393xb_nand_resources,
396 },
Ian Molton25d6cbd82008-08-10 23:32:07 +0200397 [TC6393XB_CELL_MMC] = {
398 .name = "tmio-mmc",
Ian Molton64e88672010-01-06 13:51:48 +0100399 .enable = tc6393xb_mmc_enable,
400 .resume = tc6393xb_mmc_resume,
Samuel Ortizec719742011-04-06 11:38:14 +0200401 .platform_data = &tc6393xb_mmc_data,
402 .pdata_size = sizeof(tc6393xb_mmc_data),
Ian Molton25d6cbd82008-08-10 23:32:07 +0200403 .num_resources = ARRAY_SIZE(tc6393xb_mmc_resources),
404 .resources = tc6393xb_mmc_resources,
405 },
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200406 [TC6393XB_CELL_OHCI] = {
407 .name = "tmio-ohci",
408 .num_resources = ARRAY_SIZE(tc6393xb_ohci_resources),
409 .resources = tc6393xb_ohci_resources,
410 .enable = tc6393xb_ohci_enable,
Dmitry Eremin-Solenikov1a5fb992014-10-24 21:19:57 +0400411 .suspend = tc6393xb_ohci_suspend,
Dmitry Baryshkov51a55622008-10-03 20:11:36 +0200412 .resume = tc6393xb_ohci_enable,
413 .disable = tc6393xb_ohci_disable,
414 },
Dmitry Baryshkov9e78cfe2008-10-04 00:50:36 +0200415 [TC6393XB_CELL_FB] = {
416 .name = "tmio-fb",
417 .num_resources = ARRAY_SIZE(tc6393xb_fb_resources),
418 .resources = tc6393xb_fb_resources,
419 .enable = tc6393xb_fb_enable,
420 .suspend = tc6393xb_fb_disable,
421 .resume = tc6393xb_fb_enable,
422 .disable = tc6393xb_fb_disable,
423 },
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100424};
425
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100426/*--------------------------------------------------------------------------*/
427
428static int tc6393xb_gpio_get(struct gpio_chip *chip,
429 unsigned offset)
430{
Linus Walleij4e125f62016-03-30 10:48:06 +0200431 struct tc6393xb *tc6393xb = gpiochip_get_data(chip);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100432
433 /* XXX: does dsr also represent inputs? */
Linus Walleij2d5f72b82015-12-22 15:47:55 +0100434 return !!(tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8))
435 & TC_GPIO_BIT(offset));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100436}
437
438static void __tc6393xb_gpio_set(struct gpio_chip *chip,
439 unsigned offset, int value)
440{
Linus Walleij4e125f62016-03-30 10:48:06 +0200441 struct tc6393xb *tc6393xb = gpiochip_get_data(chip);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100442 u8 dsr;
443
Ian Molton25d6cbd82008-08-10 23:32:07 +0200444 dsr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100445 if (value)
446 dsr |= TC_GPIO_BIT(offset);
447 else
448 dsr &= ~TC_GPIO_BIT(offset);
449
Ian Molton25d6cbd82008-08-10 23:32:07 +0200450 tmio_iowrite8(dsr, tc6393xb->scr + SCR_GPO_DSR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100451}
452
453static void tc6393xb_gpio_set(struct gpio_chip *chip,
454 unsigned offset, int value)
455{
Linus Walleij4e125f62016-03-30 10:48:06 +0200456 struct tc6393xb *tc6393xb = gpiochip_get_data(chip);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100457 unsigned long flags;
458
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500459 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100460
461 __tc6393xb_gpio_set(chip, offset, value);
462
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500463 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100464}
465
466static int tc6393xb_gpio_direction_input(struct gpio_chip *chip,
467 unsigned offset)
468{
Linus Walleij4e125f62016-03-30 10:48:06 +0200469 struct tc6393xb *tc6393xb = gpiochip_get_data(chip);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100470 unsigned long flags;
471 u8 doecr;
472
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500473 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100474
Ian Molton25d6cbd82008-08-10 23:32:07 +0200475 doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100476 doecr &= ~TC_GPIO_BIT(offset);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200477 tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100478
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500479 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100480
481 return 0;
482}
483
484static int tc6393xb_gpio_direction_output(struct gpio_chip *chip,
485 unsigned offset, int value)
486{
Linus Walleij4e125f62016-03-30 10:48:06 +0200487 struct tc6393xb *tc6393xb = gpiochip_get_data(chip);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100488 unsigned long flags;
489 u8 doecr;
490
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500491 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100492
493 __tc6393xb_gpio_set(chip, offset, value);
494
Ian Molton25d6cbd82008-08-10 23:32:07 +0200495 doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100496 doecr |= TC_GPIO_BIT(offset);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200497 tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100498
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500499 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100500
501 return 0;
502}
503
Linus Walleij813c2ae2022-05-07 14:33:31 +0200504/*
505 * TC6393XB GPIOs as used on TOSA, are the only user of this chip.
506 * GPIOs 2, 5, 8 and 13 are not connected.
507 */
508#define TOSA_GPIO_TG_ON 0
509#define TOSA_GPIO_L_MUTE 1
510#define TOSA_GPIO_BL_C20MA 3
511#define TOSA_GPIO_CARD_VCC_ON 4
512#define TOSA_GPIO_CHARGE_OFF 6
513#define TOSA_GPIO_CHARGE_OFF_JC 7
514#define TOSA_GPIO_BAT0_V_ON 9
515#define TOSA_GPIO_BAT1_V_ON 10
516#define TOSA_GPIO_BU_CHRG_ON 11
517#define TOSA_GPIO_BAT_SW_ON 12
518#define TOSA_GPIO_BAT0_TH_ON 14
519#define TOSA_GPIO_BAT1_TH_ON 15
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100520
Linus Walleij813c2ae2022-05-07 14:33:31 +0200521
522GPIO_LOOKUP_SINGLE(tosa_lcd_gpio_lookup, "spi2.0", "tc6393xb",
523 TOSA_GPIO_TG_ON, "tg #pwr", GPIO_ACTIVE_HIGH);
524
525GPIO_LOOKUP_SINGLE(tosa_lcd_bl_gpio_lookup, "i2c-tos-bl", "tc6393xb",
526 TOSA_GPIO_BL_C20MA, "backlight", GPIO_ACTIVE_HIGH);
527
528GPIO_LOOKUP_SINGLE(tosa_audio_gpio_lookup, "tosa-audio", "tc6393xb",
529 TOSA_GPIO_L_MUTE, NULL, GPIO_ACTIVE_HIGH);
530
531static struct gpiod_lookup_table tosa_battery_gpio_lookup = {
532 .dev_id = "wm97xx-battery",
533 .table = {
534 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_CHARGE_OFF,
535 "main charge off", GPIO_ACTIVE_HIGH),
536 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_CHARGE_OFF_JC,
537 "jacket charge off", GPIO_ACTIVE_HIGH),
538 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BAT0_V_ON,
539 "main battery", GPIO_ACTIVE_HIGH),
540 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BAT1_V_ON,
541 "jacket battery", GPIO_ACTIVE_HIGH),
542 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BU_CHRG_ON,
543 "backup battery", GPIO_ACTIVE_HIGH),
544 /* BAT1 and BAT0 thermistors appear to be swapped */
545 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BAT1_TH_ON,
546 "main battery temp", GPIO_ACTIVE_HIGH),
547 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BAT0_TH_ON,
548 "jacket battery temp", GPIO_ACTIVE_HIGH),
549 GPIO_LOOKUP("tc6393xb", TOSA_GPIO_BAT_SW_ON,
550 "battery switch", GPIO_ACTIVE_HIGH),
551 { },
552 },
553};
554
555static struct gpiod_lookup_table *tc6393xb_gpio_lookups[] = {
556 &tosa_lcd_gpio_lookup,
557 &tosa_lcd_bl_gpio_lookup,
558 &tosa_audio_gpio_lookup,
559 &tosa_battery_gpio_lookup,
560};
561
562static int tc6393xb_register_gpio(struct tc6393xb *tc6393xb)
563{
564 struct gpio_chip *gc = &tc6393xb->gpio;
565 struct device *dev = tc6393xb->dev;
566 int ret;
567
568 gc->label = "tc6393xb";
569 gc->base = -1; /* Dynamic allocation */
570 gc->ngpio = 16;
571 gc->set = tc6393xb_gpio_set;
572 gc->get = tc6393xb_gpio_get;
573 gc->direction_input = tc6393xb_gpio_direction_input;
574 gc->direction_output = tc6393xb_gpio_direction_output;
575
576 ret = devm_gpiochip_add_data(dev, gc, tc6393xb);
577 if (ret)
578 return dev_err_probe(dev, ret, "failed to add GPIO chip\n");
579
580 /* Register descriptor look-ups for consumers */
581 gpiod_add_lookup_tables(tc6393xb_gpio_lookups, ARRAY_SIZE(tc6393xb_gpio_lookups));
582
583 /* Request some of our own GPIOs */
584 tc6393xb->vcc_on = gpiochip_request_own_desc(gc, TOSA_GPIO_CARD_VCC_ON, "VCC ON",
585 GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH);
586 if (IS_ERR(tc6393xb->vcc_on))
587 return dev_err_probe(dev, PTR_ERR(tc6393xb->vcc_on),
588 "failed to request VCC ON GPIO\n");
589
590 return 0;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100591}
592
593/*--------------------------------------------------------------------------*/
594
Thomas Gleixnerbd0b9ac2015-09-14 10:42:37 +0200595static void tc6393xb_irq(struct irq_desc *desc)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100596{
Jiang Liu1e84aa42015-07-13 20:44:56 +0000597 struct tc6393xb *tc6393xb = irq_desc_get_handler_data(desc);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100598 unsigned int isr;
599 unsigned int i, irq_base;
600
601 irq_base = tc6393xb->irq_base;
602
Ian Molton25d6cbd82008-08-10 23:32:07 +0200603 while ((isr = tmio_ioread8(tc6393xb->scr + SCR_ISR) &
604 ~tmio_ioread8(tc6393xb->scr + SCR_IMR)))
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100605 for (i = 0; i < TC6393XB_NR_IRQS; i++) {
606 if (isr & (1 << i))
607 generic_handle_irq(irq_base + i);
608 }
609}
610
Mark Brown01af22e2010-12-12 12:34:04 +0000611static void tc6393xb_irq_ack(struct irq_data *data)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100612{
613}
614
Mark Brown01af22e2010-12-12 12:34:04 +0000615static void tc6393xb_irq_mask(struct irq_data *data)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100616{
Mark Brown01af22e2010-12-12 12:34:04 +0000617 struct tc6393xb *tc6393xb = irq_data_get_irq_chip_data(data);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100618 unsigned long flags;
619 u8 imr;
620
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500621 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200622 imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
Mark Brown01af22e2010-12-12 12:34:04 +0000623 imr |= 1 << (data->irq - tc6393xb->irq_base);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200624 tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500625 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100626}
627
Mark Brown01af22e2010-12-12 12:34:04 +0000628static void tc6393xb_irq_unmask(struct irq_data *data)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100629{
Mark Brown01af22e2010-12-12 12:34:04 +0000630 struct tc6393xb *tc6393xb = irq_data_get_irq_chip_data(data);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100631 unsigned long flags;
632 u8 imr;
633
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500634 raw_spin_lock_irqsave(&tc6393xb->lock, flags);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200635 imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
Mark Brown01af22e2010-12-12 12:34:04 +0000636 imr &= ~(1 << (data->irq - tc6393xb->irq_base));
Ian Molton25d6cbd82008-08-10 23:32:07 +0200637 tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500638 raw_spin_unlock_irqrestore(&tc6393xb->lock, flags);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100639}
640
641static struct irq_chip tc6393xb_chip = {
Mark Brown01af22e2010-12-12 12:34:04 +0000642 .name = "tc6393xb",
643 .irq_ack = tc6393xb_irq_ack,
644 .irq_mask = tc6393xb_irq_mask,
645 .irq_unmask = tc6393xb_irq_unmask,
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100646};
647
648static void tc6393xb_attach_irq(struct platform_device *dev)
649{
650 struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
651 unsigned int irq, irq_base;
652
653 irq_base = tc6393xb->irq_base;
654
655 for (irq = irq_base; irq < irq_base + TC6393XB_NR_IRQS; irq++) {
Thomas Gleixnerd6f7ce9f2011-03-25 11:12:35 +0000656 irq_set_chip_and_handler(irq, &tc6393xb_chip, handle_edge_irq);
Thomas Gleixnerd5bb1222011-03-25 11:12:32 +0000657 irq_set_chip_data(irq, tc6393xb);
Rob Herring9bd09f32015-07-27 15:55:20 -0500658 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100659 }
660
Thomas Gleixnerd5bb1222011-03-25 11:12:32 +0000661 irq_set_irq_type(tc6393xb->irq, IRQ_TYPE_EDGE_FALLING);
Thomas Gleixner079140f2015-07-13 20:44:54 +0000662 irq_set_chained_handler_and_data(tc6393xb->irq, tc6393xb_irq,
663 tc6393xb);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100664}
665
666static void tc6393xb_detach_irq(struct platform_device *dev)
667{
668 struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
669 unsigned int irq, irq_base;
670
Thomas Gleixner079140f2015-07-13 20:44:54 +0000671 irq_set_chained_handler_and_data(tc6393xb->irq, NULL, NULL);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100672
673 irq_base = tc6393xb->irq_base;
674
675 for (irq = irq_base; irq < irq_base + TC6393XB_NR_IRQS; irq++) {
Rob Herring9bd09f32015-07-27 15:55:20 -0500676 irq_set_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
Thomas Gleixnerd5bb1222011-03-25 11:12:32 +0000677 irq_set_chip(irq, NULL);
678 irq_set_chip_data(irq, NULL);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100679 }
680}
681
682/*--------------------------------------------------------------------------*/
683
Bill Pembertonf791be42012-11-19 13:23:04 -0500684static int tc6393xb_probe(struct platform_device *dev)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100685{
Jingoo Han334a41ce2013-07-30 17:10:05 +0900686 struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100687 struct tc6393xb *tc6393xb;
Ian Molton25d6cbd82008-08-10 23:32:07 +0200688 struct resource *iomem, *rscr;
abdoulaye berthe88d5e522014-07-12 22:30:14 +0200689 int ret;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100690
691 iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
692 if (!iomem)
693 return -EINVAL;
694
695 tc6393xb = kzalloc(sizeof *tc6393xb, GFP_KERNEL);
696 if (!tc6393xb) {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200697 ret = -ENOMEM;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100698 goto err_kzalloc;
699 }
Linus Walleij813c2ae2022-05-07 14:33:31 +0200700 tc6393xb->dev = &dev->dev;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100701
Julia Cartwrightf5139c22017-03-21 17:43:06 -0500702 raw_spin_lock_init(&tc6393xb->lock);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100703
704 platform_set_drvdata(dev, tc6393xb);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200705
706 ret = platform_get_irq(dev, 0);
707 if (ret >= 0)
708 tc6393xb->irq = ret;
709 else
710 goto err_noirq;
711
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100712 tc6393xb->iomem = iomem;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100713 tc6393xb->irq_base = tcpd->irq_base;
714
Ian Molton25d6cbd82008-08-10 23:32:07 +0200715 tc6393xb->clk = clk_get(&dev->dev, "CLK_CK3P6MI");
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100716 if (IS_ERR(tc6393xb->clk)) {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200717 ret = PTR_ERR(tc6393xb->clk);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100718 goto err_clk_get;
719 }
720
721 rscr = &tc6393xb->rscr;
722 rscr->name = "tc6393xb-core";
723 rscr->start = iomem->start;
724 rscr->end = iomem->start + 0xff;
725 rscr->flags = IORESOURCE_MEM;
726
Ian Molton25d6cbd82008-08-10 23:32:07 +0200727 ret = request_resource(iomem, rscr);
728 if (ret)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100729 goto err_request_scr;
730
H Hartley Sweeten1ecc09e2010-01-05 20:01:16 +0100731 tc6393xb->scr = ioremap(rscr->start, resource_size(rscr));
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100732 if (!tc6393xb->scr) {
Ian Molton25d6cbd82008-08-10 23:32:07 +0200733 ret = -ENOMEM;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100734 goto err_ioremap;
735 }
736
Dmitry Eremin-Solenikova64ab6b2014-11-06 11:52:38 +0300737 ret = clk_prepare_enable(tc6393xb->clk);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200738 if (ret)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100739 goto err_clk_enable;
740
Ian Molton25d6cbd82008-08-10 23:32:07 +0200741 ret = tcpd->enable(dev);
742 if (ret)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100743 goto err_enable;
744
Dmitry Baryshkovf98a0bd2008-09-24 23:46:10 +0200745 iowrite8(0, tc6393xb->scr + SCR_FER);
746 iowrite16(tcpd->scr_pll2cr, tc6393xb->scr + SCR_PLL2CR);
747 iowrite16(SCR_CCR_UNK1 | SCR_CCR_HCLK_48,
748 tc6393xb->scr + SCR_CCR);
749 iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
750 SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
751 BIT(15), tc6393xb->scr + SCR_MCR);
752 iowrite16(tcpd->scr_gper, tc6393xb->scr + SCR_GPER);
753 iowrite8(0, tc6393xb->scr + SCR_IRR);
754 iowrite8(0xbf, tc6393xb->scr + SCR_IMR);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100755
756 printk(KERN_INFO "Toshiba tc6393xb revision %d at 0x%08lx, irq %d\n",
Ian Molton25d6cbd82008-08-10 23:32:07 +0200757 tmio_ioread8(tc6393xb->scr + SCR_REVID),
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100758 (unsigned long) iomem->start, tc6393xb->irq);
759
Linus Walleij813c2ae2022-05-07 14:33:31 +0200760 ret = tc6393xb_register_gpio(tc6393xb);
761 if (ret)
762 goto err_gpio_add;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100763
Ian Molton25d6cbd82008-08-10 23:32:07 +0200764 tc6393xb_attach_irq(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100765
Samuel Ortiz7dc00a02011-04-06 12:20:49 +0200766 tc6393xb_cells[TC6393XB_CELL_NAND].platform_data = tcpd->nand_data;
767 tc6393xb_cells[TC6393XB_CELL_NAND].pdata_size =
768 sizeof(*tcpd->nand_data);
Samuel Ortiz1f8c6662011-04-06 12:13:25 +0200769 tc6393xb_cells[TC6393XB_CELL_FB].platform_data = tcpd->fb_data;
770 tc6393xb_cells[TC6393XB_CELL_FB].pdata_size = sizeof(*tcpd->fb_data);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200771
772 ret = mfd_add_devices(&dev->dev, dev->id,
Mark Brown0848c942012-09-11 15:16:36 +0800773 tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),
774 iomem, tcpd->irq_base, NULL);
Dmitry Baryshkovf024ff12008-06-27 10:37:57 +0100775
Ian Molton25d6cbd82008-08-10 23:32:07 +0200776 if (!ret)
777 return 0;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100778
Ian Molton25d6cbd82008-08-10 23:32:07 +0200779 tc6393xb_detach_irq(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100780err_gpio_add:
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100781 tcpd->disable(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100782err_enable:
Dmitry Eremin-Solenikova64ab6b2014-11-06 11:52:38 +0300783 clk_disable_unprepare(tc6393xb->clk);
Axel Linfa6e4b12010-08-03 11:10:41 +0800784err_clk_enable:
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100785 iounmap(tc6393xb->scr);
786err_ioremap:
787 release_resource(&tc6393xb->rscr);
788err_request_scr:
789 clk_put(tc6393xb->clk);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200790err_noirq:
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100791err_clk_get:
792 kfree(tc6393xb);
793err_kzalloc:
Ian Molton25d6cbd82008-08-10 23:32:07 +0200794 return ret;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100795}
796
Bill Pemberton4740f732012-11-19 13:26:01 -0500797static int tc6393xb_remove(struct platform_device *dev)
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100798{
Jingoo Han334a41ce2013-07-30 17:10:05 +0900799 struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100800 struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100801
Dmitry Baryshkov424f5252008-07-29 01:30:26 +0200802 mfd_remove_devices(&dev->dev);
Dmitry Baryshkov1c1b6ff2008-09-24 23:36:23 +0200803
Ian Molton25d6cbd82008-08-10 23:32:07 +0200804 tc6393xb_detach_irq(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100805
Uwe Kleine-Königc5533302022-06-19 10:26:55 +0200806 tcpd->disable(dev);
Dmitry Eremin-Solenikova64ab6b2014-11-06 11:52:38 +0300807 clk_disable_unprepare(tc6393xb->clk);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100808 iounmap(tc6393xb->scr);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100809 release_resource(&tc6393xb->rscr);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100810 clk_put(tc6393xb->clk);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100811 kfree(tc6393xb);
812
Uwe Kleine-Königc5533302022-06-19 10:26:55 +0200813 return 0;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100814}
815
816#ifdef CONFIG_PM
817static int tc6393xb_suspend(struct platform_device *dev, pm_message_t state)
818{
Jingoo Han334a41ce2013-07-30 17:10:05 +0900819 struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100820 struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200821 int i, ret;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100822
823 tc6393xb->suspend_state.ccr = ioread16(tc6393xb->scr + SCR_CCR);
824 tc6393xb->suspend_state.fer = ioread8(tc6393xb->scr + SCR_FER);
825
826 for (i = 0; i < 3; i++) {
827 tc6393xb->suspend_state.gpo_dsr[i] =
828 ioread8(tc6393xb->scr + SCR_GPO_DSR(i));
829 tc6393xb->suspend_state.gpo_doecr[i] =
830 ioread8(tc6393xb->scr + SCR_GPO_DOECR(i));
831 tc6393xb->suspend_state.gpi_bcr[i] =
832 ioread8(tc6393xb->scr + SCR_GPI_BCR(i));
833 }
Ian Molton25d6cbd82008-08-10 23:32:07 +0200834 ret = tcpd->suspend(dev);
Dmitry Eremin-Solenikova64ab6b2014-11-06 11:52:38 +0300835 clk_disable_unprepare(tc6393xb->clk);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100836
Ian Molton25d6cbd82008-08-10 23:32:07 +0200837 return ret;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100838}
839
840static int tc6393xb_resume(struct platform_device *dev)
841{
Jingoo Han334a41ce2013-07-30 17:10:05 +0900842 struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
Ian Molton25d6cbd82008-08-10 23:32:07 +0200843 struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
844 int ret;
Dmitry Baryshkovf98a0bd2008-09-24 23:46:10 +0200845 int i;
Ian Molton25d6cbd82008-08-10 23:32:07 +0200846
Arvind Yadavb6678052017-06-01 12:44:50 +0530847 ret = clk_prepare_enable(tc6393xb->clk);
848 if (ret)
849 return ret;
Ian Molton25d6cbd82008-08-10 23:32:07 +0200850
851 ret = tcpd->resume(dev);
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100852 if (ret)
853 return ret;
854
Dmitry Baryshkovf98a0bd2008-09-24 23:46:10 +0200855 if (!tcpd->resume_restore)
856 return 0;
857
858 iowrite8(tc6393xb->suspend_state.fer, tc6393xb->scr + SCR_FER);
859 iowrite16(tcpd->scr_pll2cr, tc6393xb->scr + SCR_PLL2CR);
860 iowrite16(tc6393xb->suspend_state.ccr, tc6393xb->scr + SCR_CCR);
861 iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
862 SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
863 BIT(15), tc6393xb->scr + SCR_MCR);
864 iowrite16(tcpd->scr_gper, tc6393xb->scr + SCR_GPER);
865 iowrite8(0, tc6393xb->scr + SCR_IRR);
866 iowrite8(0xbf, tc6393xb->scr + SCR_IMR);
867
868 for (i = 0; i < 3; i++) {
869 iowrite8(tc6393xb->suspend_state.gpo_dsr[i],
870 tc6393xb->scr + SCR_GPO_DSR(i));
871 iowrite8(tc6393xb->suspend_state.gpo_doecr[i],
872 tc6393xb->scr + SCR_GPO_DOECR(i));
873 iowrite8(tc6393xb->suspend_state.gpi_bcr[i],
874 tc6393xb->scr + SCR_GPI_BCR(i));
875 }
876
877 return 0;
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100878}
879#else
880#define tc6393xb_suspend NULL
881#define tc6393xb_resume NULL
882#endif
883
884static struct platform_driver tc6393xb_driver = {
885 .probe = tc6393xb_probe,
Bill Pemberton84449212012-11-19 13:20:24 -0500886 .remove = tc6393xb_remove,
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100887 .suspend = tc6393xb_suspend,
888 .resume = tc6393xb_resume,
889
890 .driver = {
891 .name = "tc6393xb",
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100892 },
893};
894
895static int __init tc6393xb_init(void)
896{
897 return platform_driver_register(&tc6393xb_driver);
898}
899
900static void __exit tc6393xb_exit(void)
901{
902 platform_driver_unregister(&tc6393xb_driver);
903}
904
905subsys_initcall(tc6393xb_init);
906module_exit(tc6393xb_exit);
907
Ian Molton25d6cbd82008-08-10 23:32:07 +0200908MODULE_LICENSE("GPL v2");
Dmitry Baryshkovd6315942008-06-22 12:01:58 +0100909MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov and Dirk Opfer");
910MODULE_DESCRIPTION("tc6393xb Toshiba Mobile IO Controller");
911MODULE_ALIAS("platform:tc6393xb");
Ian Molton64e88672010-01-06 13:51:48 +0100912