1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2015-2016 MediaTek Inc.
7 #include <linux/component.h>
8 #include <linux/device.h>
11 #include <linux/module.h>
13 #include <linux/of_platform.h>
14 #include <linux/platform_device.h>
15 #include <linux/pm_runtime.h>
16 #include <soc/mediatek/smi.h>
17 #include <dt-bindings/memory/mt2701-larb-port.h>
18 #include <dt-bindings/memory/mtk-memory-port.h>
21 #define SMI_L1LEN 0x100
23 #define SMI_BUS_SEL 0x220
24 #define SMI_BUS_LARB_SHIFT(larbid) ((larbid) << 1)
25 /* All are MMU0 defaultly. Only specialize mmu1 here. */
26 #define F_MMU1_LARB(larbid) (0x1 << SMI_BUS_LARB_SHIFT(larbid))
28 #define SMI_M4U_TH 0x234
29 #define SMI_FIFO_TH1 0x238
30 #define SMI_FIFO_TH2 0x23c
32 #define SMI_DUMMY 0x444
35 #define SMI_LARB_CMD_THRT_CON 0x24
36 #define SMI_LARB_THRT_RD_NU_LMT_MSK GENMASK(7, 4)
37 #define SMI_LARB_THRT_RD_NU_LMT (5 << 4)
39 #define SMI_LARB_SW_FLAG 0x40
40 #define SMI_LARB_SW_FLAG_1 0x1
42 #define SMI_LARB_OSTDL_PORT 0x200
43 #define SMI_LARB_OSTDL_PORTx(id) (SMI_LARB_OSTDL_PORT + (((id) & 0x1f) << 2))
45 /* Below are about mmu enable registers, they are different in SoCs */
47 #define REG_SMI_SECUR_CON_BASE 0x5c0
49 /* every register control 8 port, register offset 0x4 */
50 #define REG_SMI_SECUR_CON_OFFSET(id) (((id) >> 3) << 2)
51 #define REG_SMI_SECUR_CON_ADDR(id) \
52 (REG_SMI_SECUR_CON_BASE + REG_SMI_SECUR_CON_OFFSET(id))
55 * every port have 4 bit to control, bit[port + 3] control virtual or physical,
56 * bit[port + 2 : port + 1] control the domain, bit[port] control the security
59 #define SMI_SECUR_CON_VAL_MSK(id) (~(0xf << (((id) & 0x7) << 2)))
60 #define SMI_SECUR_CON_VAL_VIRT(id) BIT((((id) & 0x7) << 2) + 3)
61 /* mt2701 domain should be set to 3 */
62 #define SMI_SECUR_CON_VAL_DOMAIN(id) (0x3 << ((((id) & 0x7) << 2) + 1))
66 #define MT8167_SMI_LARB_MMU_EN 0xfc0
69 #define MT8173_SMI_LARB_MMU_EN 0xf00
72 #define SMI_LARB_NONSEC_CON(id) (0x380 + ((id) * 4))
73 #define F_MMU_EN BIT(0)
74 #define BANK_SEL(id) ({ \
75 u32 _id = (id) & 0x3; \
76 (_id << 8 | _id << 10 | _id << 12 | _id << 14); \
79 #define SMI_COMMON_INIT_REGS_NR 6
80 #define SMI_LARB_PORT_NR_MAX 32
82 #define MTK_SMI_FLAG_THRT_UPDATE BIT(0)
83 #define MTK_SMI_FLAG_SW_FLAG BIT(1)
84 #define MTK_SMI_CAPS(flags, _x) (!!((flags) & (_x)))
86 struct mtk_smi_reg_pair {
93 MTK_SMI_GEN2, /* gen2 smi common */
94 MTK_SMI_GEN2_SUB_COMM, /* gen2 smi sub common */
97 #define MTK_SMI_CLK_NR_MAX 4
99 /* larbs: Require apb/smi clocks while gals is optional. */
100 static const char * const mtk_smi_larb_clks[] = {"apb", "smi", "gals"};
101 #define MTK_SMI_LARB_REQ_CLK_NR 2
102 #define MTK_SMI_LARB_OPT_CLK_NR 1
105 * common: Require these four clocks in has_gals case. Otherwise, only apb/smi are required.
106 * sub common: Require apb/smi/gals0 clocks in has_gals case. Otherwise, only apb/smi are required.
108 static const char * const mtk_smi_common_clks[] = {"apb", "smi", "gals0", "gals1"};
109 #define MTK_SMI_COM_REQ_CLK_NR 2
110 #define MTK_SMI_COM_GALS_REQ_CLK_NR MTK_SMI_CLK_NR_MAX
111 #define MTK_SMI_SUB_COM_GALS_REQ_CLK_NR 3
113 struct mtk_smi_common_plat {
114 enum mtk_smi_type type;
116 u32 bus_sel; /* Balance some larbs to enter mmu0 or mmu1 */
118 const struct mtk_smi_reg_pair *init;
121 struct mtk_smi_larb_gen {
122 int port_in_larb[MTK_LARB_NR_MAX + 1];
123 void (*config_port)(struct device *dev);
124 unsigned int larb_direct_to_common_mask;
125 unsigned int flags_general;
126 const u8 (*ostd)[SMI_LARB_PORT_NR_MAX];
131 unsigned int clk_num;
132 struct clk_bulk_data clks[MTK_SMI_CLK_NR_MAX];
133 struct clk *clk_async; /*only needed by mt2701*/
135 void __iomem *smi_ao_base; /* only for gen1 */
136 void __iomem *base; /* only for gen2 */
138 struct device *smi_common_dev; /* for sub common */
139 const struct mtk_smi_common_plat *plat;
142 struct mtk_smi_larb { /* larb: local arbiter */
145 struct device *smi_common_dev; /* common or sub-common dev */
146 const struct mtk_smi_larb_gen *larb_gen;
152 int mtk_smi_larb_get(struct device *larbdev)
154 int ret = pm_runtime_resume_and_get(larbdev);
156 return (ret < 0) ? ret : 0;
158 EXPORT_SYMBOL_GPL(mtk_smi_larb_get);
160 void mtk_smi_larb_put(struct device *larbdev)
162 pm_runtime_put_sync(larbdev);
164 EXPORT_SYMBOL_GPL(mtk_smi_larb_put);
167 mtk_smi_larb_bind(struct device *dev, struct device *master, void *data)
169 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
170 struct mtk_smi_larb_iommu *larb_mmu = data;
173 for (i = 0; i < MTK_LARB_NR_MAX; i++) {
174 if (dev == larb_mmu[i].dev) {
176 larb->mmu = &larb_mmu[i].mmu;
177 larb->bank = larb_mmu[i].bank;
185 mtk_smi_larb_unbind(struct device *dev, struct device *master, void *data)
187 /* Do nothing as the iommu is always enabled. */
190 static const struct component_ops mtk_smi_larb_component_ops = {
191 .bind = mtk_smi_larb_bind,
192 .unbind = mtk_smi_larb_unbind,
195 static void mtk_smi_larb_config_port_gen1(struct device *dev)
197 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
198 const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen;
199 struct mtk_smi *common = dev_get_drvdata(larb->smi_common_dev);
200 int i, m4u_port_id, larb_port_num;
201 u32 sec_con_val, reg_val;
203 m4u_port_id = larb_gen->port_in_larb[larb->larbid];
204 larb_port_num = larb_gen->port_in_larb[larb->larbid + 1]
205 - larb_gen->port_in_larb[larb->larbid];
207 for (i = 0; i < larb_port_num; i++, m4u_port_id++) {
208 if (*larb->mmu & BIT(i)) {
209 /* bit[port + 3] controls the virtual or physical */
210 sec_con_val = SMI_SECUR_CON_VAL_VIRT(m4u_port_id);
212 /* do not need to enable m4u for this port */
215 reg_val = readl(common->smi_ao_base
216 + REG_SMI_SECUR_CON_ADDR(m4u_port_id));
217 reg_val &= SMI_SECUR_CON_VAL_MSK(m4u_port_id);
218 reg_val |= sec_con_val;
219 reg_val |= SMI_SECUR_CON_VAL_DOMAIN(m4u_port_id);
222 + REG_SMI_SECUR_CON_ADDR(m4u_port_id));
226 static void mtk_smi_larb_config_port_mt8167(struct device *dev)
228 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
230 writel(*larb->mmu, larb->base + MT8167_SMI_LARB_MMU_EN);
233 static void mtk_smi_larb_config_port_mt8173(struct device *dev)
235 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
237 writel(*larb->mmu, larb->base + MT8173_SMI_LARB_MMU_EN);
240 static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
242 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
243 u32 reg, flags_general = larb->larb_gen->flags_general;
244 const u8 *larbostd = larb->larb_gen->ostd ? larb->larb_gen->ostd[larb->larbid] : NULL;
247 if (BIT(larb->larbid) & larb->larb_gen->larb_direct_to_common_mask)
250 if (MTK_SMI_CAPS(flags_general, MTK_SMI_FLAG_THRT_UPDATE)) {
251 reg = readl_relaxed(larb->base + SMI_LARB_CMD_THRT_CON);
252 reg &= ~SMI_LARB_THRT_RD_NU_LMT_MSK;
253 reg |= SMI_LARB_THRT_RD_NU_LMT;
254 writel_relaxed(reg, larb->base + SMI_LARB_CMD_THRT_CON);
257 if (MTK_SMI_CAPS(flags_general, MTK_SMI_FLAG_SW_FLAG))
258 writel_relaxed(SMI_LARB_SW_FLAG_1, larb->base + SMI_LARB_SW_FLAG);
260 for (i = 0; i < SMI_LARB_PORT_NR_MAX && larbostd && !!larbostd[i]; i++)
261 writel_relaxed(larbostd[i], larb->base + SMI_LARB_OSTDL_PORTx(i));
263 for_each_set_bit(i, (unsigned long *)larb->mmu, 32) {
264 reg = readl_relaxed(larb->base + SMI_LARB_NONSEC_CON(i));
266 reg |= BANK_SEL(larb->bank[i]);
267 writel(reg, larb->base + SMI_LARB_NONSEC_CON(i));
271 static const u8 mtk_smi_larb_mt8195_ostd[][SMI_LARB_PORT_NR_MAX] = {
272 [0] = {0x0a, 0xc, 0x22, 0x22, 0x01, 0x0a,}, /* larb0 */
273 [1] = {0x0a, 0xc, 0x22, 0x22, 0x01, 0x0a,}, /* larb1 */
274 [2] = {0x12, 0x12, 0x12, 0x12, 0x0a,}, /* ... */
275 [3] = {0x12, 0x12, 0x12, 0x12, 0x28, 0x28, 0x0a,},
276 [4] = {0x06, 0x01, 0x17, 0x06, 0x0a,},
277 [5] = {0x06, 0x01, 0x17, 0x06, 0x06, 0x01, 0x06, 0x0a,},
278 [6] = {0x06, 0x01, 0x06, 0x0a,},
279 [7] = {0x0c, 0x0c, 0x12,},
280 [8] = {0x0c, 0x0c, 0x12,},
281 [9] = {0x0a, 0x08, 0x04, 0x06, 0x01, 0x01, 0x10, 0x18, 0x11, 0x0a,
282 0x08, 0x04, 0x11, 0x06, 0x02, 0x06, 0x01, 0x11, 0x11, 0x06,},
283 [10] = {0x18, 0x08, 0x01, 0x01, 0x20, 0x12, 0x18, 0x06, 0x05, 0x10,
284 0x08, 0x08, 0x10, 0x08, 0x08, 0x18, 0x0c, 0x09, 0x0b, 0x0d,
285 0x0d, 0x06, 0x10, 0x10,},
286 [11] = {0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x01, 0x01, 0x01, 0x01,},
287 [12] = {0x09, 0x09, 0x05, 0x05, 0x0c, 0x18, 0x02, 0x02, 0x04, 0x02,},
288 [13] = {0x02, 0x02, 0x12, 0x12, 0x02, 0x02, 0x02, 0x02, 0x08, 0x01,},
289 [14] = {0x12, 0x12, 0x02, 0x02, 0x02, 0x02, 0x16, 0x01, 0x16, 0x01,
290 0x01, 0x02, 0x02, 0x08, 0x02,},
292 [16] = {0x28, 0x02, 0x02, 0x12, 0x02, 0x12, 0x10, 0x02, 0x02, 0x0a,
293 0x12, 0x02, 0x0a, 0x16, 0x02, 0x04,},
294 [17] = {0x1a, 0x0e, 0x0a, 0x0a, 0x0c, 0x0e, 0x10,},
295 [18] = {0x12, 0x06, 0x12, 0x06,},
296 [19] = {0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04, 0x01,
297 0x01, 0x01, 0x04, 0x0a, 0x06, 0x01, 0x01, 0x01, 0x0a, 0x06,
298 0x01, 0x01, 0x05, 0x03, 0x03, 0x04, 0x01,},
299 [20] = {0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04, 0x01,
300 0x01, 0x01, 0x04, 0x0a, 0x06, 0x01, 0x01, 0x01, 0x0a, 0x06,
301 0x01, 0x01, 0x05, 0x03, 0x03, 0x04, 0x01,},
302 [21] = {0x28, 0x19, 0x0c, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,},
303 [22] = {0x28, 0x19, 0x0c, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,},
304 [23] = {0x18, 0x01,},
305 [24] = {0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01,
307 [25] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
309 [26] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
311 [27] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
313 [28] = {0x1a, 0x0e, 0x0a, 0x0a, 0x0c, 0x0e, 0x10,},
316 static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
318 LARB0_PORT_OFFSET, LARB1_PORT_OFFSET,
319 LARB2_PORT_OFFSET, LARB3_PORT_OFFSET
321 .config_port = mtk_smi_larb_config_port_gen1,
324 static const struct mtk_smi_larb_gen mtk_smi_larb_mt2712 = {
325 .config_port = mtk_smi_larb_config_port_gen2_general,
326 .larb_direct_to_common_mask = BIT(8) | BIT(9), /* bdpsys */
329 static const struct mtk_smi_larb_gen mtk_smi_larb_mt6779 = {
330 .config_port = mtk_smi_larb_config_port_gen2_general,
331 .larb_direct_to_common_mask =
332 BIT(4) | BIT(6) | BIT(11) | BIT(12) | BIT(13),
333 /* DUMMY | IPU0 | IPU1 | CCU | MDLA */
336 static const struct mtk_smi_larb_gen mtk_smi_larb_mt8167 = {
337 /* mt8167 do not need the port in larb */
338 .config_port = mtk_smi_larb_config_port_mt8167,
341 static const struct mtk_smi_larb_gen mtk_smi_larb_mt8173 = {
342 /* mt8173 do not need the port in larb */
343 .config_port = mtk_smi_larb_config_port_mt8173,
346 static const struct mtk_smi_larb_gen mtk_smi_larb_mt8183 = {
347 .config_port = mtk_smi_larb_config_port_gen2_general,
348 .larb_direct_to_common_mask = BIT(2) | BIT(3) | BIT(7),
349 /* IPU0 | IPU1 | CCU */
352 static const struct mtk_smi_larb_gen mtk_smi_larb_mt8192 = {
353 .config_port = mtk_smi_larb_config_port_gen2_general,
356 static const struct mtk_smi_larb_gen mtk_smi_larb_mt8195 = {
357 .config_port = mtk_smi_larb_config_port_gen2_general,
358 .flags_general = MTK_SMI_FLAG_THRT_UPDATE | MTK_SMI_FLAG_SW_FLAG,
359 .ostd = mtk_smi_larb_mt8195_ostd,
362 static const struct of_device_id mtk_smi_larb_of_ids[] = {
363 {.compatible = "mediatek,mt2701-smi-larb", .data = &mtk_smi_larb_mt2701},
364 {.compatible = "mediatek,mt2712-smi-larb", .data = &mtk_smi_larb_mt2712},
365 {.compatible = "mediatek,mt6779-smi-larb", .data = &mtk_smi_larb_mt6779},
366 {.compatible = "mediatek,mt8167-smi-larb", .data = &mtk_smi_larb_mt8167},
367 {.compatible = "mediatek,mt8173-smi-larb", .data = &mtk_smi_larb_mt8173},
368 {.compatible = "mediatek,mt8183-smi-larb", .data = &mtk_smi_larb_mt8183},
369 {.compatible = "mediatek,mt8192-smi-larb", .data = &mtk_smi_larb_mt8192},
370 {.compatible = "mediatek,mt8195-smi-larb", .data = &mtk_smi_larb_mt8195},
374 static int mtk_smi_device_link_common(struct device *dev, struct device **com_dev)
376 struct platform_device *smi_com_pdev;
377 struct device_node *smi_com_node;
378 struct device *smi_com_dev;
379 struct device_link *link;
381 smi_com_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0);
385 smi_com_pdev = of_find_device_by_node(smi_com_node);
386 of_node_put(smi_com_node);
388 /* smi common is the supplier, Make sure it is ready before */
389 if (!platform_get_drvdata(smi_com_pdev))
390 return -EPROBE_DEFER;
391 smi_com_dev = &smi_com_pdev->dev;
392 link = device_link_add(dev, smi_com_dev,
393 DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS);
395 dev_err(dev, "Unable to link smi-common dev\n");
398 *com_dev = smi_com_dev;
400 dev_err(dev, "Failed to get the smi_common device\n");
406 static int mtk_smi_dts_clk_init(struct device *dev, struct mtk_smi *smi,
407 const char * const clks[],
408 unsigned int clk_nr_required,
409 unsigned int clk_nr_optional)
413 for (i = 0; i < clk_nr_required; i++)
414 smi->clks[i].id = clks[i];
415 ret = devm_clk_bulk_get(dev, clk_nr_required, smi->clks);
419 for (i = clk_nr_required; i < clk_nr_required + clk_nr_optional; i++)
420 smi->clks[i].id = clks[i];
421 ret = devm_clk_bulk_get_optional(dev, clk_nr_optional,
422 smi->clks + clk_nr_required);
423 smi->clk_num = clk_nr_required + clk_nr_optional;
427 static int mtk_smi_larb_probe(struct platform_device *pdev)
429 struct mtk_smi_larb *larb;
430 struct device *dev = &pdev->dev;
433 larb = devm_kzalloc(dev, sizeof(*larb), GFP_KERNEL);
437 larb->larb_gen = of_device_get_match_data(dev);
438 larb->base = devm_platform_ioremap_resource(pdev, 0);
439 if (IS_ERR(larb->base))
440 return PTR_ERR(larb->base);
442 ret = mtk_smi_dts_clk_init(dev, &larb->smi, mtk_smi_larb_clks,
443 MTK_SMI_LARB_REQ_CLK_NR, MTK_SMI_LARB_OPT_CLK_NR);
449 ret = mtk_smi_device_link_common(dev, &larb->smi_common_dev);
453 pm_runtime_enable(dev);
454 platform_set_drvdata(pdev, larb);
455 ret = component_add(dev, &mtk_smi_larb_component_ops);
461 pm_runtime_disable(dev);
462 device_link_remove(dev, larb->smi_common_dev);
466 static int mtk_smi_larb_remove(struct platform_device *pdev)
468 struct mtk_smi_larb *larb = platform_get_drvdata(pdev);
470 device_link_remove(&pdev->dev, larb->smi_common_dev);
471 pm_runtime_disable(&pdev->dev);
472 component_del(&pdev->dev, &mtk_smi_larb_component_ops);
476 static int __maybe_unused mtk_smi_larb_resume(struct device *dev)
478 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
479 const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen;
482 ret = clk_bulk_prepare_enable(larb->smi.clk_num, larb->smi.clks);
486 /* Configure the basic setting for this larb */
487 larb_gen->config_port(dev);
492 static int __maybe_unused mtk_smi_larb_suspend(struct device *dev)
494 struct mtk_smi_larb *larb = dev_get_drvdata(dev);
496 clk_bulk_disable_unprepare(larb->smi.clk_num, larb->smi.clks);
500 static const struct dev_pm_ops smi_larb_pm_ops = {
501 SET_RUNTIME_PM_OPS(mtk_smi_larb_suspend, mtk_smi_larb_resume, NULL)
502 SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
503 pm_runtime_force_resume)
506 static struct platform_driver mtk_smi_larb_driver = {
507 .probe = mtk_smi_larb_probe,
508 .remove = mtk_smi_larb_remove,
510 .name = "mtk-smi-larb",
511 .of_match_table = mtk_smi_larb_of_ids,
512 .pm = &smi_larb_pm_ops,
516 static const struct mtk_smi_reg_pair mtk_smi_common_mt8195_init[SMI_COMMON_INIT_REGS_NR] = {
518 {SMI_M4U_TH, 0xe100e10},
519 {SMI_FIFO_TH1, 0x506090a},
520 {SMI_FIFO_TH2, 0x506090a},
525 static const struct mtk_smi_common_plat mtk_smi_common_gen1 = {
526 .type = MTK_SMI_GEN1,
529 static const struct mtk_smi_common_plat mtk_smi_common_gen2 = {
530 .type = MTK_SMI_GEN2,
533 static const struct mtk_smi_common_plat mtk_smi_common_mt6779 = {
534 .type = MTK_SMI_GEN2,
536 .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(4) |
537 F_MMU1_LARB(5) | F_MMU1_LARB(6) | F_MMU1_LARB(7),
540 static const struct mtk_smi_common_plat mtk_smi_common_mt8183 = {
541 .type = MTK_SMI_GEN2,
543 .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(5) |
547 static const struct mtk_smi_common_plat mtk_smi_common_mt8192 = {
548 .type = MTK_SMI_GEN2,
550 .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(5) |
554 static const struct mtk_smi_common_plat mtk_smi_common_mt8195_vdo = {
555 .type = MTK_SMI_GEN2,
557 .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(3) | F_MMU1_LARB(5) |
559 .init = mtk_smi_common_mt8195_init,
562 static const struct mtk_smi_common_plat mtk_smi_common_mt8195_vpp = {
563 .type = MTK_SMI_GEN2,
565 .bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(7),
566 .init = mtk_smi_common_mt8195_init,
569 static const struct mtk_smi_common_plat mtk_smi_sub_common_mt8195 = {
570 .type = MTK_SMI_GEN2_SUB_COMM,
574 static const struct of_device_id mtk_smi_common_of_ids[] = {
575 {.compatible = "mediatek,mt2701-smi-common", .data = &mtk_smi_common_gen1},
576 {.compatible = "mediatek,mt2712-smi-common", .data = &mtk_smi_common_gen2},
577 {.compatible = "mediatek,mt6779-smi-common", .data = &mtk_smi_common_mt6779},
578 {.compatible = "mediatek,mt8167-smi-common", .data = &mtk_smi_common_gen2},
579 {.compatible = "mediatek,mt8173-smi-common", .data = &mtk_smi_common_gen2},
580 {.compatible = "mediatek,mt8183-smi-common", .data = &mtk_smi_common_mt8183},
581 {.compatible = "mediatek,mt8192-smi-common", .data = &mtk_smi_common_mt8192},
582 {.compatible = "mediatek,mt8195-smi-common-vdo", .data = &mtk_smi_common_mt8195_vdo},
583 {.compatible = "mediatek,mt8195-smi-common-vpp", .data = &mtk_smi_common_mt8195_vpp},
584 {.compatible = "mediatek,mt8195-smi-sub-common", .data = &mtk_smi_sub_common_mt8195},
588 static int mtk_smi_common_probe(struct platform_device *pdev)
590 struct device *dev = &pdev->dev;
591 struct mtk_smi *common;
592 int ret, clk_required = MTK_SMI_COM_REQ_CLK_NR;
594 common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
598 common->plat = of_device_get_match_data(dev);
600 if (common->plat->has_gals) {
601 if (common->plat->type == MTK_SMI_GEN2)
602 clk_required = MTK_SMI_COM_GALS_REQ_CLK_NR;
603 else if (common->plat->type == MTK_SMI_GEN2_SUB_COMM)
604 clk_required = MTK_SMI_SUB_COM_GALS_REQ_CLK_NR;
606 ret = mtk_smi_dts_clk_init(dev, common, mtk_smi_common_clks, clk_required, 0);
611 * for mtk smi gen 1, we need to get the ao(always on) base to config
612 * m4u port, and we need to enable the aync clock for transform the smi
613 * clock into emi clock domain, but for mtk smi gen2, there's no smi ao
616 if (common->plat->type == MTK_SMI_GEN1) {
617 common->smi_ao_base = devm_platform_ioremap_resource(pdev, 0);
618 if (IS_ERR(common->smi_ao_base))
619 return PTR_ERR(common->smi_ao_base);
621 common->clk_async = devm_clk_get(dev, "async");
622 if (IS_ERR(common->clk_async))
623 return PTR_ERR(common->clk_async);
625 ret = clk_prepare_enable(common->clk_async);
629 common->base = devm_platform_ioremap_resource(pdev, 0);
630 if (IS_ERR(common->base))
631 return PTR_ERR(common->base);
634 /* link its smi-common if this is smi-sub-common */
635 if (common->plat->type == MTK_SMI_GEN2_SUB_COMM) {
636 ret = mtk_smi_device_link_common(dev, &common->smi_common_dev);
641 pm_runtime_enable(dev);
642 platform_set_drvdata(pdev, common);
646 static int mtk_smi_common_remove(struct platform_device *pdev)
648 struct mtk_smi *common = dev_get_drvdata(&pdev->dev);
650 if (common->plat->type == MTK_SMI_GEN2_SUB_COMM)
651 device_link_remove(&pdev->dev, common->smi_common_dev);
652 pm_runtime_disable(&pdev->dev);
656 static int __maybe_unused mtk_smi_common_resume(struct device *dev)
658 struct mtk_smi *common = dev_get_drvdata(dev);
659 const struct mtk_smi_reg_pair *init = common->plat->init;
660 u32 bus_sel = common->plat->bus_sel; /* default is 0 */
663 ret = clk_bulk_prepare_enable(common->clk_num, common->clks);
667 if (common->plat->type != MTK_SMI_GEN2)
670 for (i = 0; i < SMI_COMMON_INIT_REGS_NR && init && init[i].offset; i++)
671 writel_relaxed(init[i].value, common->base + init[i].offset);
673 writel(bus_sel, common->base + SMI_BUS_SEL);
677 static int __maybe_unused mtk_smi_common_suspend(struct device *dev)
679 struct mtk_smi *common = dev_get_drvdata(dev);
681 clk_bulk_disable_unprepare(common->clk_num, common->clks);
685 static const struct dev_pm_ops smi_common_pm_ops = {
686 SET_RUNTIME_PM_OPS(mtk_smi_common_suspend, mtk_smi_common_resume, NULL)
687 SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
688 pm_runtime_force_resume)
691 static struct platform_driver mtk_smi_common_driver = {
692 .probe = mtk_smi_common_probe,
693 .remove = mtk_smi_common_remove,
695 .name = "mtk-smi-common",
696 .of_match_table = mtk_smi_common_of_ids,
697 .pm = &smi_common_pm_ops,
701 static struct platform_driver * const smidrivers[] = {
702 &mtk_smi_common_driver,
703 &mtk_smi_larb_driver,
706 static int __init mtk_smi_init(void)
708 return platform_register_drivers(smidrivers, ARRAY_SIZE(smidrivers));
710 module_init(mtk_smi_init);
712 static void __exit mtk_smi_exit(void)
714 platform_unregister_drivers(smidrivers, ARRAY_SIZE(smidrivers));
716 module_exit(mtk_smi_exit);
718 MODULE_DESCRIPTION("MediaTek SMI driver");
719 MODULE_LICENSE("GPL v2");