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1/*
2 * Copyright (C) 2010 Marvell International Ltd.
3 * Zhangfei Gao <zhangfei.gao@marvell.com>
4 * Kevin Wang <dwang4@marvell.com>
5 * Mingwei Wang <mwwang@marvell.com>
6 * Philip Rakity <prakity@marvell.com>
7 * Mark Brown <markb@marvell.com>
8 *
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 */
19#include <linux/err.h>
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/clk.h>
23#include <linux/io.h>
24#include <linux/gpio.h>
25#include <linux/mmc/card.h>
26#include <linux/mmc/host.h>
27#include <linux/platform_data/pxa_sdhci.h>
28#include <linux/slab.h>
29#include <linux/delay.h>
30#include <linux/module.h>
31#include "sdhci.h"
32#include "sdhci-pltfm.h"
33
34#define SD_CLOCK_BURST_SIZE_SETUP 0x10A
35#define SDCLK_SEL 0x100
36#define SDCLK_DELAY_SHIFT 9
37#define SDCLK_DELAY_MASK 0x1f
38
39#define SD_CFG_FIFO_PARAM 0x100
40#define SDCFG_GEN_PAD_CLK_ON (1<<6)
41#define SDCFG_GEN_PAD_CLK_CNT_MASK 0xFF
42#define SDCFG_GEN_PAD_CLK_CNT_SHIFT 24
43
44#define SD_SPI_MODE 0x108
45#define SD_CE_ATA_1 0x10C
46
47#define SD_CE_ATA_2 0x10E
48#define SDCE_MISC_INT (1<<2)
49#define SDCE_MISC_INT_EN (1<<1)
50
51static void pxav3_set_private_registers(struct sdhci_host *host, u8 mask)
52{
53 struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
54 struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
55
56 if (mask == SDHCI_RESET_ALL) {
57 /*
58 * tune timing of read data/command when crc error happen
59 * no performance impact
60 */
61 if (pdata && 0 != pdata->clk_delay_cycles) {
62 u16 tmp;
63
64 tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
65 tmp |= (pdata->clk_delay_cycles & SDCLK_DELAY_MASK)
66 << SDCLK_DELAY_SHIFT;
67 tmp |= SDCLK_SEL;
68 writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
69 }
70 }
71}
72
73#define MAX_WAIT_COUNT 5
74static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode)
75{
76 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
77 struct sdhci_pxa *pxa = pltfm_host->priv;
78 u16 tmp;
79 int count;
80
81 if (pxa->power_mode == MMC_POWER_UP
82 && power_mode == MMC_POWER_ON) {
83
84 dev_dbg(mmc_dev(host->mmc),
85 "%s: slot->power_mode = %d,"
86 "ios->power_mode = %d\n",
87 __func__,
88 pxa->power_mode,
89 power_mode);
90
91 /* set we want notice of when 74 clocks are sent */
92 tmp = readw(host->ioaddr + SD_CE_ATA_2);
93 tmp |= SDCE_MISC_INT_EN;
94 writew(tmp, host->ioaddr + SD_CE_ATA_2);
95
96 /* start sending the 74 clocks */
97 tmp = readw(host->ioaddr + SD_CFG_FIFO_PARAM);
98 tmp |= SDCFG_GEN_PAD_CLK_ON;
99 writew(tmp, host->ioaddr + SD_CFG_FIFO_PARAM);
100
101 /* slowest speed is about 100KHz or 10usec per clock */
102 udelay(740);
103 count = 0;
104
105 while (count++ < MAX_WAIT_COUNT) {
106 if ((readw(host->ioaddr + SD_CE_ATA_2)
107 & SDCE_MISC_INT) == 0)
108 break;
109 udelay(10);
110 }
111
112 if (count == MAX_WAIT_COUNT)
113 dev_warn(mmc_dev(host->mmc), "74 clock interrupt not cleared\n");
114
115 /* clear the interrupt bit if posted */
116 tmp = readw(host->ioaddr + SD_CE_ATA_2);
117 tmp |= SDCE_MISC_INT;
118 writew(tmp, host->ioaddr + SD_CE_ATA_2);
119 }
120 pxa->power_mode = power_mode;
121}
122
123static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
124{
125 u16 ctrl_2;
126
127 /*
128 * Set V18_EN -- UHS modes do not work without this.
129 * does not change signaling voltage
130 */
131 ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
132
133 /* Select Bus Speed Mode for host */
134 ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
135 switch (uhs) {
136 case MMC_TIMING_UHS_SDR12:
137 ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
138 break;
139 case MMC_TIMING_UHS_SDR25:
140 ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
141 break;
142 case MMC_TIMING_UHS_SDR50:
143 ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180;
144 break;
145 case MMC_TIMING_UHS_SDR104:
146 ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180;
147 break;
148 case MMC_TIMING_UHS_DDR50:
149 ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180;
150 break;
151 }
152
153 sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
154 dev_dbg(mmc_dev(host->mmc),
155 "%s uhs = %d, ctrl_2 = %04X\n",
156 __func__, uhs, ctrl_2);
157
158 return 0;
159}
160
161static struct sdhci_ops pxav3_sdhci_ops = {
162 .platform_reset_exit = pxav3_set_private_registers,
163 .set_uhs_signaling = pxav3_set_uhs_signaling,
164 .platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
165};
166
167static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
168{
169 struct sdhci_pltfm_host *pltfm_host;
170 struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
171 struct device *dev = &pdev->dev;
172 struct sdhci_host *host = NULL;
173 struct sdhci_pxa *pxa = NULL;
174 int ret;
175 struct clk *clk;
176
177 pxa = kzalloc(sizeof(struct sdhci_pxa), GFP_KERNEL);
178 if (!pxa)
179 return -ENOMEM;
180
181 host = sdhci_pltfm_init(pdev, NULL);
182 if (IS_ERR(host)) {
183 kfree(pxa);
184 return PTR_ERR(host);
185 }
186 pltfm_host = sdhci_priv(host);
187 pltfm_host->priv = pxa;
188
189 clk = clk_get(dev, "PXA-SDHCLK");
190 if (IS_ERR(clk)) {
191 dev_err(dev, "failed to get io clock\n");
192 ret = PTR_ERR(clk);
193 goto err_clk_get;
194 }
195 pltfm_host->clk = clk;
196 clk_enable(clk);
197
198 host->quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
199 | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
200 | SDHCI_QUIRK_32BIT_ADMA_SIZE;
201
202 /* enable 1/8V DDR capable */
203 host->mmc->caps |= MMC_CAP_1_8V_DDR;
204
205 if (pdata) {
206 if (pdata->flags & PXA_FLAG_CARD_PERMANENT) {
207 /* on-chip device */
208 host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
209 host->mmc->caps |= MMC_CAP_NONREMOVABLE;
210 }
211
212 /* If slot design supports 8 bit data, indicate this to MMC. */
213 if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
214 host->mmc->caps |= MMC_CAP_8_BIT_DATA;
215
216 if (pdata->quirks)
217 host->quirks |= pdata->quirks;
218 if (pdata->host_caps)
219 host->mmc->caps |= pdata->host_caps;
220 if (pdata->pm_caps)
221 host->mmc->pm_caps |= pdata->pm_caps;
222 }
223
224 host->ops = &pxav3_sdhci_ops;
225
226 ret = sdhci_add_host(host);
227 if (ret) {
228 dev_err(&pdev->dev, "failed to add host\n");
229 goto err_add_host;
230 }
231
232 platform_set_drvdata(pdev, host);
233
234 return 0;
235
236err_add_host:
237 clk_disable(clk);
238 clk_put(clk);
239err_clk_get:
240 sdhci_pltfm_free(pdev);
241 kfree(pxa);
242 return ret;
243}
244
245static int __devexit sdhci_pxav3_remove(struct platform_device *pdev)
246{
247 struct sdhci_host *host = platform_get_drvdata(pdev);
248 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
249 struct sdhci_pxa *pxa = pltfm_host->priv;
250
251 sdhci_remove_host(host, 1);
252
253 clk_disable(pltfm_host->clk);
254 clk_put(pltfm_host->clk);
255 sdhci_pltfm_free(pdev);
256 kfree(pxa);
257
258 platform_set_drvdata(pdev, NULL);
259
260 return 0;
261}
262
263static struct platform_driver sdhci_pxav3_driver = {
264 .driver = {
265 .name = "sdhci-pxav3",
266 .owner = THIS_MODULE,
267 .pm = SDHCI_PLTFM_PMOPS,
268 },
269 .probe = sdhci_pxav3_probe,
270 .remove = __devexit_p(sdhci_pxav3_remove),
271};
272
273module_platform_driver(sdhci_pxav3_driver);
274
275MODULE_DESCRIPTION("SDHCI driver for pxav3");
276MODULE_AUTHOR("Marvell International Ltd.");
277MODULE_LICENSE("GPL v2");
278
1/*
2 * Copyright (C) 2010 Marvell International Ltd.
3 * Zhangfei Gao <zhangfei.gao@marvell.com>
4 * Kevin Wang <dwang4@marvell.com>
5 * Mingwei Wang <mwwang@marvell.com>
6 * Philip Rakity <prakity@marvell.com>
7 * Mark Brown <markb@marvell.com>
8 *
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 */
19#include <linux/err.h>
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/clk.h>
23#include <linux/io.h>
24#include <linux/gpio.h>
25#include <linux/mmc/card.h>
26#include <linux/mmc/host.h>
27#include <linux/mmc/slot-gpio.h>
28#include <linux/platform_data/pxa_sdhci.h>
29#include <linux/slab.h>
30#include <linux/delay.h>
31#include <linux/module.h>
32#include <linux/of.h>
33#include <linux/of_device.h>
34#include <linux/of_gpio.h>
35#include <linux/pm.h>
36#include <linux/pm_runtime.h>
37#include <linux/mbus.h>
38
39#include "sdhci.h"
40#include "sdhci-pltfm.h"
41
42#define PXAV3_RPM_DELAY_MS 50
43
44#define SD_CLOCK_BURST_SIZE_SETUP 0x10A
45#define SDCLK_SEL 0x100
46#define SDCLK_DELAY_SHIFT 9
47#define SDCLK_DELAY_MASK 0x1f
48
49#define SD_CFG_FIFO_PARAM 0x100
50#define SDCFG_GEN_PAD_CLK_ON (1<<6)
51#define SDCFG_GEN_PAD_CLK_CNT_MASK 0xFF
52#define SDCFG_GEN_PAD_CLK_CNT_SHIFT 24
53
54#define SD_SPI_MODE 0x108
55#define SD_CE_ATA_1 0x10C
56
57#define SD_CE_ATA_2 0x10E
58#define SDCE_MISC_INT (1<<2)
59#define SDCE_MISC_INT_EN (1<<1)
60
61struct sdhci_pxa {
62 struct clk *clk_core;
63 struct clk *clk_io;
64 u8 power_mode;
65 void __iomem *sdio3_conf_reg;
66};
67
68/*
69 * These registers are relative to the second register region, for the
70 * MBus bridge.
71 */
72#define SDHCI_WINDOW_CTRL(i) (0x80 + ((i) << 3))
73#define SDHCI_WINDOW_BASE(i) (0x84 + ((i) << 3))
74#define SDHCI_MAX_WIN_NUM 8
75
76/*
77 * Fields below belong to SDIO3 Configuration Register (third register
78 * region for the Armada 38x flavor)
79 */
80
81#define SDIO3_CONF_CLK_INV BIT(0)
82#define SDIO3_CONF_SD_FB_CLK BIT(2)
83
84static int mv_conf_mbus_windows(struct platform_device *pdev,
85 const struct mbus_dram_target_info *dram)
86{
87 int i;
88 void __iomem *regs;
89 struct resource *res;
90
91 if (!dram) {
92 dev_err(&pdev->dev, "no mbus dram info\n");
93 return -EINVAL;
94 }
95
96 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
97 if (!res) {
98 dev_err(&pdev->dev, "cannot get mbus registers\n");
99 return -EINVAL;
100 }
101
102 regs = ioremap(res->start, resource_size(res));
103 if (!regs) {
104 dev_err(&pdev->dev, "cannot map mbus registers\n");
105 return -ENOMEM;
106 }
107
108 for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) {
109 writel(0, regs + SDHCI_WINDOW_CTRL(i));
110 writel(0, regs + SDHCI_WINDOW_BASE(i));
111 }
112
113 for (i = 0; i < dram->num_cs; i++) {
114 const struct mbus_dram_window *cs = dram->cs + i;
115
116 /* Write size, attributes and target id to control register */
117 writel(((cs->size - 1) & 0xffff0000) |
118 (cs->mbus_attr << 8) |
119 (dram->mbus_dram_target_id << 4) | 1,
120 regs + SDHCI_WINDOW_CTRL(i));
121 /* Write base address to base register */
122 writel(cs->base, regs + SDHCI_WINDOW_BASE(i));
123 }
124
125 iounmap(regs);
126
127 return 0;
128}
129
130static int armada_38x_quirks(struct platform_device *pdev,
131 struct sdhci_host *host)
132{
133 struct device_node *np = pdev->dev.of_node;
134 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
135 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
136 struct resource *res;
137
138 host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
139 host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
140
141 host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
142 host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
143
144 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
145 "conf-sdio3");
146 if (res) {
147 pxa->sdio3_conf_reg = devm_ioremap_resource(&pdev->dev, res);
148 if (IS_ERR(pxa->sdio3_conf_reg))
149 return PTR_ERR(pxa->sdio3_conf_reg);
150 } else {
151 /*
152 * According to erratum 'FE-2946959' both SDR50 and DDR50
153 * modes require specific clock adjustments in SDIO3
154 * Configuration register, if the adjustment is not done,
155 * remove them from the capabilities.
156 */
157 host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
158
159 dev_warn(&pdev->dev, "conf-sdio3 register not found: disabling SDR50 and DDR50 modes.\nConsider updating your dtb\n");
160 }
161
162 /*
163 * According to erratum 'ERR-7878951' Armada 38x SDHCI
164 * controller has different capabilities than the ones shown
165 * in its registers
166 */
167 if (of_property_read_bool(np, "no-1-8-v")) {
168 host->caps &= ~SDHCI_CAN_VDD_180;
169 host->mmc->caps &= ~MMC_CAP_1_8V_DDR;
170 } else {
171 host->caps &= ~SDHCI_CAN_VDD_330;
172 }
173 host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_USE_SDR50_TUNING);
174
175 return 0;
176}
177
178static void pxav3_reset(struct sdhci_host *host, u8 mask)
179{
180 struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
181 struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
182
183 sdhci_reset(host, mask);
184
185 if (mask == SDHCI_RESET_ALL) {
186 /*
187 * tune timing of read data/command when crc error happen
188 * no performance impact
189 */
190 if (pdata && 0 != pdata->clk_delay_cycles) {
191 u16 tmp;
192
193 tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
194 tmp |= (pdata->clk_delay_cycles & SDCLK_DELAY_MASK)
195 << SDCLK_DELAY_SHIFT;
196 tmp |= SDCLK_SEL;
197 writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
198 }
199 }
200}
201
202#define MAX_WAIT_COUNT 5
203static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode)
204{
205 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
206 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
207 u16 tmp;
208 int count;
209
210 if (pxa->power_mode == MMC_POWER_UP
211 && power_mode == MMC_POWER_ON) {
212
213 dev_dbg(mmc_dev(host->mmc),
214 "%s: slot->power_mode = %d,"
215 "ios->power_mode = %d\n",
216 __func__,
217 pxa->power_mode,
218 power_mode);
219
220 /* set we want notice of when 74 clocks are sent */
221 tmp = readw(host->ioaddr + SD_CE_ATA_2);
222 tmp |= SDCE_MISC_INT_EN;
223 writew(tmp, host->ioaddr + SD_CE_ATA_2);
224
225 /* start sending the 74 clocks */
226 tmp = readw(host->ioaddr + SD_CFG_FIFO_PARAM);
227 tmp |= SDCFG_GEN_PAD_CLK_ON;
228 writew(tmp, host->ioaddr + SD_CFG_FIFO_PARAM);
229
230 /* slowest speed is about 100KHz or 10usec per clock */
231 udelay(740);
232 count = 0;
233
234 while (count++ < MAX_WAIT_COUNT) {
235 if ((readw(host->ioaddr + SD_CE_ATA_2)
236 & SDCE_MISC_INT) == 0)
237 break;
238 udelay(10);
239 }
240
241 if (count == MAX_WAIT_COUNT)
242 dev_warn(mmc_dev(host->mmc), "74 clock interrupt not cleared\n");
243
244 /* clear the interrupt bit if posted */
245 tmp = readw(host->ioaddr + SD_CE_ATA_2);
246 tmp |= SDCE_MISC_INT;
247 writew(tmp, host->ioaddr + SD_CE_ATA_2);
248 }
249 pxa->power_mode = power_mode;
250}
251
252static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
253{
254 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
255 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
256 u16 ctrl_2;
257
258 /*
259 * Set V18_EN -- UHS modes do not work without this.
260 * does not change signaling voltage
261 */
262 ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
263
264 /* Select Bus Speed Mode for host */
265 ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
266 switch (uhs) {
267 case MMC_TIMING_UHS_SDR12:
268 ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
269 break;
270 case MMC_TIMING_UHS_SDR25:
271 ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
272 break;
273 case MMC_TIMING_UHS_SDR50:
274 ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180;
275 break;
276 case MMC_TIMING_UHS_SDR104:
277 ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180;
278 break;
279 case MMC_TIMING_MMC_DDR52:
280 case MMC_TIMING_UHS_DDR50:
281 ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180;
282 break;
283 }
284
285 /*
286 * Update SDIO3 Configuration register according to erratum
287 * FE-2946959
288 */
289 if (pxa->sdio3_conf_reg) {
290 u8 reg_val = readb(pxa->sdio3_conf_reg);
291
292 if (uhs == MMC_TIMING_UHS_SDR50 ||
293 uhs == MMC_TIMING_UHS_DDR50) {
294 reg_val &= ~SDIO3_CONF_CLK_INV;
295 reg_val |= SDIO3_CONF_SD_FB_CLK;
296 } else if (uhs == MMC_TIMING_MMC_HS) {
297 reg_val &= ~SDIO3_CONF_CLK_INV;
298 reg_val &= ~SDIO3_CONF_SD_FB_CLK;
299 } else {
300 reg_val |= SDIO3_CONF_CLK_INV;
301 reg_val &= ~SDIO3_CONF_SD_FB_CLK;
302 }
303 writeb(reg_val, pxa->sdio3_conf_reg);
304 }
305
306 sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
307 dev_dbg(mmc_dev(host->mmc),
308 "%s uhs = %d, ctrl_2 = %04X\n",
309 __func__, uhs, ctrl_2);
310}
311
312static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
313 unsigned short vdd)
314{
315 struct mmc_host *mmc = host->mmc;
316 u8 pwr = host->pwr;
317
318 sdhci_set_power_noreg(host, mode, vdd);
319
320 if (host->pwr == pwr)
321 return;
322
323 if (host->pwr == 0)
324 vdd = 0;
325
326 if (!IS_ERR(mmc->supply.vmmc))
327 mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
328}
329
330static const struct sdhci_ops pxav3_sdhci_ops = {
331 .set_clock = sdhci_set_clock,
332 .set_power = pxav3_set_power,
333 .platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
334 .get_max_clock = sdhci_pltfm_clk_get_max_clock,
335 .set_bus_width = sdhci_set_bus_width,
336 .reset = pxav3_reset,
337 .set_uhs_signaling = pxav3_set_uhs_signaling,
338};
339
340static const struct sdhci_pltfm_data sdhci_pxav3_pdata = {
341 .quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
342 | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
343 | SDHCI_QUIRK_32BIT_ADMA_SIZE
344 | SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
345 .ops = &pxav3_sdhci_ops,
346};
347
348#ifdef CONFIG_OF
349static const struct of_device_id sdhci_pxav3_of_match[] = {
350 {
351 .compatible = "mrvl,pxav3-mmc",
352 },
353 {
354 .compatible = "marvell,armada-380-sdhci",
355 },
356 {},
357};
358MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match);
359
360static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
361{
362 struct sdhci_pxa_platdata *pdata;
363 struct device_node *np = dev->of_node;
364 u32 clk_delay_cycles;
365
366 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
367 if (!pdata)
368 return NULL;
369
370 if (!of_property_read_u32(np, "mrvl,clk-delay-cycles",
371 &clk_delay_cycles))
372 pdata->clk_delay_cycles = clk_delay_cycles;
373
374 return pdata;
375}
376#else
377static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
378{
379 return NULL;
380}
381#endif
382
383static int sdhci_pxav3_probe(struct platform_device *pdev)
384{
385 struct sdhci_pltfm_host *pltfm_host;
386 struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
387 struct device *dev = &pdev->dev;
388 struct device_node *np = pdev->dev.of_node;
389 struct sdhci_host *host = NULL;
390 struct sdhci_pxa *pxa = NULL;
391 const struct of_device_id *match;
392 int ret;
393
394 host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata, sizeof(*pxa));
395 if (IS_ERR(host))
396 return PTR_ERR(host);
397
398 pltfm_host = sdhci_priv(host);
399 pxa = sdhci_pltfm_priv(pltfm_host);
400
401 pxa->clk_io = devm_clk_get(dev, "io");
402 if (IS_ERR(pxa->clk_io))
403 pxa->clk_io = devm_clk_get(dev, NULL);
404 if (IS_ERR(pxa->clk_io)) {
405 dev_err(dev, "failed to get io clock\n");
406 ret = PTR_ERR(pxa->clk_io);
407 goto err_clk_get;
408 }
409 pltfm_host->clk = pxa->clk_io;
410 clk_prepare_enable(pxa->clk_io);
411
412 pxa->clk_core = devm_clk_get(dev, "core");
413 if (!IS_ERR(pxa->clk_core))
414 clk_prepare_enable(pxa->clk_core);
415
416 /* enable 1/8V DDR capable */
417 host->mmc->caps |= MMC_CAP_1_8V_DDR;
418
419 if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
420 ret = armada_38x_quirks(pdev, host);
421 if (ret < 0)
422 goto err_mbus_win;
423 ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
424 if (ret < 0)
425 goto err_mbus_win;
426 }
427
428 match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
429 if (match) {
430 ret = mmc_of_parse(host->mmc);
431 if (ret)
432 goto err_of_parse;
433 sdhci_get_of_property(pdev);
434 pdata = pxav3_get_mmc_pdata(dev);
435 pdev->dev.platform_data = pdata;
436 } else if (pdata) {
437 /* on-chip device */
438 if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
439 host->mmc->caps |= MMC_CAP_NONREMOVABLE;
440
441 /* If slot design supports 8 bit data, indicate this to MMC. */
442 if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
443 host->mmc->caps |= MMC_CAP_8_BIT_DATA;
444
445 if (pdata->quirks)
446 host->quirks |= pdata->quirks;
447 if (pdata->quirks2)
448 host->quirks2 |= pdata->quirks2;
449 if (pdata->host_caps)
450 host->mmc->caps |= pdata->host_caps;
451 if (pdata->host_caps2)
452 host->mmc->caps2 |= pdata->host_caps2;
453 if (pdata->pm_caps)
454 host->mmc->pm_caps |= pdata->pm_caps;
455
456 if (gpio_is_valid(pdata->ext_cd_gpio)) {
457 ret = mmc_gpio_request_cd(host->mmc, pdata->ext_cd_gpio,
458 0);
459 if (ret) {
460 dev_err(mmc_dev(host->mmc),
461 "failed to allocate card detect gpio\n");
462 goto err_cd_req;
463 }
464 }
465 }
466
467 pm_runtime_get_noresume(&pdev->dev);
468 pm_runtime_set_active(&pdev->dev);
469 pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
470 pm_runtime_use_autosuspend(&pdev->dev);
471 pm_runtime_enable(&pdev->dev);
472 pm_suspend_ignore_children(&pdev->dev, 1);
473
474 ret = sdhci_add_host(host);
475 if (ret) {
476 dev_err(&pdev->dev, "failed to add host\n");
477 goto err_add_host;
478 }
479
480 if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
481 device_init_wakeup(&pdev->dev, 1);
482
483 pm_runtime_put_autosuspend(&pdev->dev);
484
485 return 0;
486
487err_add_host:
488 pm_runtime_disable(&pdev->dev);
489 pm_runtime_put_noidle(&pdev->dev);
490err_of_parse:
491err_cd_req:
492err_mbus_win:
493 clk_disable_unprepare(pxa->clk_io);
494 clk_disable_unprepare(pxa->clk_core);
495err_clk_get:
496 sdhci_pltfm_free(pdev);
497 return ret;
498}
499
500static int sdhci_pxav3_remove(struct platform_device *pdev)
501{
502 struct sdhci_host *host = platform_get_drvdata(pdev);
503 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
504 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
505
506 pm_runtime_get_sync(&pdev->dev);
507 pm_runtime_disable(&pdev->dev);
508 pm_runtime_put_noidle(&pdev->dev);
509
510 sdhci_remove_host(host, 1);
511
512 clk_disable_unprepare(pxa->clk_io);
513 clk_disable_unprepare(pxa->clk_core);
514
515 sdhci_pltfm_free(pdev);
516
517 return 0;
518}
519
520#ifdef CONFIG_PM_SLEEP
521static int sdhci_pxav3_suspend(struct device *dev)
522{
523 int ret;
524 struct sdhci_host *host = dev_get_drvdata(dev);
525
526 pm_runtime_get_sync(dev);
527 if (host->tuning_mode != SDHCI_TUNING_MODE_3)
528 mmc_retune_needed(host->mmc);
529 ret = sdhci_suspend_host(host);
530 pm_runtime_mark_last_busy(dev);
531 pm_runtime_put_autosuspend(dev);
532
533 return ret;
534}
535
536static int sdhci_pxav3_resume(struct device *dev)
537{
538 int ret;
539 struct sdhci_host *host = dev_get_drvdata(dev);
540
541 pm_runtime_get_sync(dev);
542 ret = sdhci_resume_host(host);
543 pm_runtime_mark_last_busy(dev);
544 pm_runtime_put_autosuspend(dev);
545
546 return ret;
547}
548#endif
549
550#ifdef CONFIG_PM
551static int sdhci_pxav3_runtime_suspend(struct device *dev)
552{
553 struct sdhci_host *host = dev_get_drvdata(dev);
554 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
555 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
556 int ret;
557
558 ret = sdhci_runtime_suspend_host(host);
559 if (ret)
560 return ret;
561
562 if (host->tuning_mode != SDHCI_TUNING_MODE_3)
563 mmc_retune_needed(host->mmc);
564
565 clk_disable_unprepare(pxa->clk_io);
566 if (!IS_ERR(pxa->clk_core))
567 clk_disable_unprepare(pxa->clk_core);
568
569 return 0;
570}
571
572static int sdhci_pxav3_runtime_resume(struct device *dev)
573{
574 struct sdhci_host *host = dev_get_drvdata(dev);
575 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
576 struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
577
578 clk_prepare_enable(pxa->clk_io);
579 if (!IS_ERR(pxa->clk_core))
580 clk_prepare_enable(pxa->clk_core);
581
582 return sdhci_runtime_resume_host(host);
583}
584#endif
585
586static const struct dev_pm_ops sdhci_pxav3_pmops = {
587 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pxav3_suspend, sdhci_pxav3_resume)
588 SET_RUNTIME_PM_OPS(sdhci_pxav3_runtime_suspend,
589 sdhci_pxav3_runtime_resume, NULL)
590};
591
592static struct platform_driver sdhci_pxav3_driver = {
593 .driver = {
594 .name = "sdhci-pxav3",
595 .of_match_table = of_match_ptr(sdhci_pxav3_of_match),
596 .pm = &sdhci_pxav3_pmops,
597 },
598 .probe = sdhci_pxav3_probe,
599 .remove = sdhci_pxav3_remove,
600};
601
602module_platform_driver(sdhci_pxav3_driver);
603
604MODULE_DESCRIPTION("SDHCI driver for pxav3");
605MODULE_AUTHOR("Marvell International Ltd.");
606MODULE_LICENSE("GPL v2");
607