diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-05 17:19:54 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-05 17:19:54 -0400 |
commit | ff050ad12c551233e546506409c89eb2f640d9f3 (patch) | |
tree | 8ae29fece122a91cbd6160fb2ca34c0ea82c3df9 /arch/arm/mach-imx/pm-imx6.c | |
parent | dfc25e4503aef6b82a1de4a0fbe19aafa8648fbe (diff) | |
parent | 9233087dc468f75bdeb7830c694c09dc74be88c4 (diff) |
Merge tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC specific changes from Arnd Bergmann:
"Lots of changes specific to one of the SoC families. Some that stick
out are:
- mach-qcom gains new features, most importantly SMP support for the
newer chips (Stephen Boyd, Rohit Vaswani)
- mvebu gains support for three new SoCs: Armada 375, 380 and 385
(Thomas Petazzoni and Free-electrons team)
- SMP support for Rockchips (Heiko Stübner)
- Lots of i.MX changes (Shawn Guo)
- Added support for BCM5301x SoC (Hauke Mehrtens)
- Multiplatform support for Marvell Kirkwood and Dove (Andrew Lunn
and Sebastian Hesselbarth doing the final part of a long journey)
- Unify davinci platforms and remove obsolete ones (Sekhar Nori, Arnd
Bergmann)"
* tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (126 commits)
ARM: sunxi: Select HAVE_ARM_ARCH_TIMER
ARM: cache-tauros2: remove ARMv6 code
ARM: mvebu: don't select CONFIG_NEON
ARM: davinci: fix DT booting with default defconfig
ARM: configs: bcm_defconfig: enable bcm590xx regulator support
ARM: davinci: remove tnetv107x support
MAINTAINERS: Update ARM STi maintainers
ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
ARM: bcm21664: Add board support.
ARM: sunxi: Add the new watchog compatibles to the reboot code
ARM: enable ARM_HAS_SG_CHAIN for multiplatform
ARM: davinci: remove da8xx_omapl_defconfig
ARM: davinci: da8xx: fix multiple watchdog device registration
ARM: davinci: add da8xx specific configs to davinci_all_defconfig
ARM: davinci: enable da8xx build concurrently with older devices
ARM: BCM5301X: workaround suppress fault
ARM: BCM5301X: add early debugging support
ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU
ARM: mach-bcm: Remove GENERIC_TIME
ARM: shmobile: APMU: Fix warnings due to improper printk formats
...
Diffstat (limited to 'arch/arm/mach-imx/pm-imx6.c')
-rw-r--r-- | arch/arm/mach-imx/pm-imx6.c | 551 |
1 files changed, 551 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c new file mode 100644 index 000000000000..9392a8f4ef24 --- /dev/null +++ b/arch/arm/mach-imx/pm-imx6.c | |||
@@ -0,0 +1,551 @@ | |||
1 | /* | ||
2 | * Copyright 2011-2014 Freescale Semiconductor, Inc. | ||
3 | * Copyright 2011 Linaro Ltd. | ||
4 | * | ||
5 | * The code contained herein is licensed under the GNU General Public | ||
6 | * License. You may obtain a copy of the GNU General Public License | ||
7 | * Version 2 or later at the following locations: | ||
8 | * | ||
9 | * http://www.opensource.org/licenses/gpl-license.html | ||
10 | * http://www.gnu.org/copyleft/gpl.html | ||
11 | */ | ||
12 | |||
13 | #include <linux/delay.h> | ||
14 | #include <linux/init.h> | ||
15 | #include <linux/io.h> | ||
16 | #include <linux/irq.h> | ||
17 | #include <linux/genalloc.h> | ||
18 | #include <linux/mfd/syscon.h> | ||
19 | #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> | ||
20 | #include <linux/of.h> | ||
21 | #include <linux/of_address.h> | ||
22 | #include <linux/of_platform.h> | ||
23 | #include <linux/regmap.h> | ||
24 | #include <linux/suspend.h> | ||
25 | #include <asm/cacheflush.h> | ||
26 | #include <asm/fncpy.h> | ||
27 | #include <asm/proc-fns.h> | ||
28 | #include <asm/suspend.h> | ||
29 | #include <asm/tlb.h> | ||
30 | |||
31 | #include "common.h" | ||
32 | #include "hardware.h" | ||
33 | |||
34 | #define CCR 0x0 | ||
35 | #define BM_CCR_WB_COUNT (0x7 << 16) | ||
36 | #define BM_CCR_RBC_BYPASS_COUNT (0x3f << 21) | ||
37 | #define BM_CCR_RBC_EN (0x1 << 27) | ||
38 | |||
39 | #define CLPCR 0x54 | ||
40 | #define BP_CLPCR_LPM 0 | ||
41 | #define BM_CLPCR_LPM (0x3 << 0) | ||
42 | #define BM_CLPCR_BYPASS_PMIC_READY (0x1 << 2) | ||
43 | #define BM_CLPCR_ARM_CLK_DIS_ON_LPM (0x1 << 5) | ||
44 | #define BM_CLPCR_SBYOS (0x1 << 6) | ||
45 | #define BM_CLPCR_DIS_REF_OSC (0x1 << 7) | ||
46 | #define BM_CLPCR_VSTBY (0x1 << 8) | ||
47 | #define BP_CLPCR_STBY_COUNT 9 | ||
48 | #define BM_CLPCR_STBY_COUNT (0x3 << 9) | ||
49 | #define BM_CLPCR_COSC_PWRDOWN (0x1 << 11) | ||
50 | #define BM_CLPCR_WB_PER_AT_LPM (0x1 << 16) | ||
51 | #define BM_CLPCR_WB_CORE_AT_LPM (0x1 << 17) | ||
52 | #define BM_CLPCR_BYP_MMDC_CH0_LPM_HS (0x1 << 19) | ||
53 | #define BM_CLPCR_BYP_MMDC_CH1_LPM_HS (0x1 << 21) | ||
54 | #define BM_CLPCR_MASK_CORE0_WFI (0x1 << 22) | ||
55 | #define BM_CLPCR_MASK_CORE1_WFI (0x1 << 23) | ||
56 | #define BM_CLPCR_MASK_CORE2_WFI (0x1 << 24) | ||
57 | #define BM_CLPCR_MASK_CORE3_WFI (0x1 << 25) | ||
58 | #define BM_CLPCR_MASK_SCU_IDLE (0x1 << 26) | ||
59 | #define BM_CLPCR_MASK_L2CC_IDLE (0x1 << 27) | ||
60 | |||
61 | #define CGPR 0x64 | ||
62 | #define BM_CGPR_INT_MEM_CLK_LPM (0x1 << 17) | ||
63 | |||
64 | #define MX6Q_SUSPEND_OCRAM_SIZE 0x1000 | ||
65 | #define MX6_MAX_MMDC_IO_NUM 33 | ||
66 | |||
67 | static void __iomem *ccm_base; | ||
68 | static void __iomem *suspend_ocram_base; | ||
69 | static void (*imx6_suspend_in_ocram_fn)(void __iomem *ocram_vbase); | ||
70 | |||
71 | /* | ||
72 | * suspend ocram space layout: | ||
73 | * ======================== high address ====================== | ||
74 | * . | ||
75 | * . | ||
76 | * . | ||
77 | * ^ | ||
78 | * ^ | ||
79 | * ^ | ||
80 | * imx6_suspend code | ||
81 | * PM_INFO structure(imx6_cpu_pm_info) | ||
82 | * ======================== low address ======================= | ||
83 | */ | ||
84 | |||
85 | struct imx6_pm_base { | ||
86 | phys_addr_t pbase; | ||
87 | void __iomem *vbase; | ||
88 | }; | ||
89 | |||
90 | struct imx6_pm_socdata { | ||
91 | u32 cpu_type; | ||
92 | const char *mmdc_compat; | ||
93 | const char *src_compat; | ||
94 | const char *iomuxc_compat; | ||
95 | const char *gpc_compat; | ||
96 | const u32 mmdc_io_num; | ||
97 | const u32 *mmdc_io_offset; | ||
98 | }; | ||
99 | |||
100 | static const u32 imx6q_mmdc_io_offset[] __initconst = { | ||
101 | 0x5ac, 0x5b4, 0x528, 0x520, /* DQM0 ~ DQM3 */ | ||
102 | 0x514, 0x510, 0x5bc, 0x5c4, /* DQM4 ~ DQM7 */ | ||
103 | 0x56c, 0x578, 0x588, 0x594, /* CAS, RAS, SDCLK_0, SDCLK_1 */ | ||
104 | 0x5a8, 0x5b0, 0x524, 0x51c, /* SDQS0 ~ SDQS3 */ | ||
105 | 0x518, 0x50c, 0x5b8, 0x5c0, /* SDQS4 ~ SDQS7 */ | ||
106 | 0x784, 0x788, 0x794, 0x79c, /* GPR_B0DS ~ GPR_B3DS */ | ||
107 | 0x7a0, 0x7a4, 0x7a8, 0x748, /* GPR_B4DS ~ GPR_B7DS */ | ||
108 | 0x59c, 0x5a0, 0x750, 0x774, /* SODT0, SODT1, MODE_CTL, MODE */ | ||
109 | 0x74c, /* GPR_ADDS */ | ||
110 | }; | ||
111 | |||
112 | static const u32 imx6dl_mmdc_io_offset[] __initconst = { | ||
113 | 0x470, 0x474, 0x478, 0x47c, /* DQM0 ~ DQM3 */ | ||
114 | 0x480, 0x484, 0x488, 0x48c, /* DQM4 ~ DQM7 */ | ||
115 | 0x464, 0x490, 0x4ac, 0x4b0, /* CAS, RAS, SDCLK_0, SDCLK_1 */ | ||
116 | 0x4bc, 0x4c0, 0x4c4, 0x4c8, /* DRAM_SDQS0 ~ DRAM_SDQS3 */ | ||
117 | 0x4cc, 0x4d0, 0x4d4, 0x4d8, /* DRAM_SDQS4 ~ DRAM_SDQS7 */ | ||
118 | 0x764, 0x770, 0x778, 0x77c, /* GPR_B0DS ~ GPR_B3DS */ | ||
119 | 0x780, 0x784, 0x78c, 0x748, /* GPR_B4DS ~ GPR_B7DS */ | ||
120 | 0x4b4, 0x4b8, 0x750, 0x760, /* SODT0, SODT1, MODE_CTL, MODE */ | ||
121 | 0x74c, /* GPR_ADDS */ | ||
122 | }; | ||
123 | |||
124 | static const u32 imx6sl_mmdc_io_offset[] __initconst = { | ||
125 | 0x30c, 0x310, 0x314, 0x318, /* DQM0 ~ DQM3 */ | ||
126 | 0x5c4, 0x5cc, 0x5d4, 0x5d8, /* GPR_B0DS ~ GPR_B3DS */ | ||
127 | 0x300, 0x31c, 0x338, 0x5ac, /* CAS, RAS, SDCLK_0, GPR_ADDS */ | ||
128 | 0x33c, 0x340, 0x5b0, 0x5c0, /* SODT0, SODT1, MODE_CTL, MODE */ | ||
129 | 0x330, 0x334, 0x320, /* SDCKE0, SDCKE1, RESET */ | ||
130 | }; | ||
131 | |||
132 | static const struct imx6_pm_socdata imx6q_pm_data __initconst = { | ||
133 | .cpu_type = MXC_CPU_IMX6Q, | ||
134 | .mmdc_compat = "fsl,imx6q-mmdc", | ||
135 | .src_compat = "fsl,imx6q-src", | ||
136 | .iomuxc_compat = "fsl,imx6q-iomuxc", | ||
137 | .gpc_compat = "fsl,imx6q-gpc", | ||
138 | .mmdc_io_num = ARRAY_SIZE(imx6q_mmdc_io_offset), | ||
139 | .mmdc_io_offset = imx6q_mmdc_io_offset, | ||
140 | }; | ||
141 | |||
142 | static const struct imx6_pm_socdata imx6dl_pm_data __initconst = { | ||
143 | .cpu_type = MXC_CPU_IMX6DL, | ||
144 | .mmdc_compat = "fsl,imx6q-mmdc", | ||
145 | .src_compat = "fsl,imx6q-src", | ||
146 | .iomuxc_compat = "fsl,imx6dl-iomuxc", | ||
147 | .gpc_compat = "fsl,imx6q-gpc", | ||
148 | .mmdc_io_num = ARRAY_SIZE(imx6dl_mmdc_io_offset), | ||
149 | .mmdc_io_offset = imx6dl_mmdc_io_offset, | ||
150 | }; | ||
151 | |||
152 | static const struct imx6_pm_socdata imx6sl_pm_data __initconst = { | ||
153 | .cpu_type = MXC_CPU_IMX6SL, | ||
154 | .mmdc_compat = "fsl,imx6sl-mmdc", | ||
155 | .src_compat = "fsl,imx6sl-src", | ||
156 | .iomuxc_compat = "fsl,imx6sl-iomuxc", | ||
157 | .gpc_compat = "fsl,imx6sl-gpc", | ||
158 | .mmdc_io_num = ARRAY_SIZE(imx6sl_mmdc_io_offset), | ||
159 | .mmdc_io_offset = imx6sl_mmdc_io_offset, | ||
160 | }; | ||
161 | |||
162 | /* | ||
163 | * This structure is for passing necessary data for low level ocram | ||
164 | * suspend code(arch/arm/mach-imx/suspend-imx6.S), if this struct | ||
165 | * definition is changed, the offset definition in | ||
166 | * arch/arm/mach-imx/suspend-imx6.S must be also changed accordingly, | ||
167 | * otherwise, the suspend to ocram function will be broken! | ||
168 | */ | ||
169 | struct imx6_cpu_pm_info { | ||
170 | phys_addr_t pbase; /* The physical address of pm_info. */ | ||
171 | phys_addr_t resume_addr; /* The physical resume address for asm code */ | ||
172 | u32 cpu_type; | ||
173 | u32 pm_info_size; /* Size of pm_info. */ | ||
174 | struct imx6_pm_base mmdc_base; | ||
175 | struct imx6_pm_base src_base; | ||
176 | struct imx6_pm_base iomuxc_base; | ||
177 | struct imx6_pm_base ccm_base; | ||
178 | struct imx6_pm_base gpc_base; | ||
179 | struct imx6_pm_base l2_base; | ||
180 | u32 mmdc_io_num; /* Number of MMDC IOs which need saved/restored. */ | ||
181 | u32 mmdc_io_val[MX6_MAX_MMDC_IO_NUM][2]; /* To save offset and value */ | ||
182 | } __aligned(8); | ||
183 | |||
184 | void imx6q_set_int_mem_clk_lpm(void) | ||
185 | { | ||
186 | u32 val = readl_relaxed(ccm_base + CGPR); | ||
187 | |||
188 | val |= BM_CGPR_INT_MEM_CLK_LPM; | ||
189 | writel_relaxed(val, ccm_base + CGPR); | ||
190 | } | ||
191 | |||
192 | static void imx6q_enable_rbc(bool enable) | ||
193 | { | ||
194 | u32 val; | ||
195 | |||
196 | /* | ||
197 | * need to mask all interrupts in GPC before | ||
198 | * operating RBC configurations | ||
199 | */ | ||
200 | imx_gpc_mask_all(); | ||
201 | |||
202 | /* configure RBC enable bit */ | ||
203 | val = readl_relaxed(ccm_base + CCR); | ||
204 | val &= ~BM_CCR_RBC_EN; | ||
205 | val |= enable ? BM_CCR_RBC_EN : 0; | ||
206 | writel_relaxed(val, ccm_base + CCR); | ||
207 | |||
208 | /* configure RBC count */ | ||
209 | val = readl_relaxed(ccm_base + CCR); | ||
210 | val &= ~BM_CCR_RBC_BYPASS_COUNT; | ||
211 | val |= enable ? BM_CCR_RBC_BYPASS_COUNT : 0; | ||
212 | writel(val, ccm_base + CCR); | ||
213 | |||
214 | /* | ||
215 | * need to delay at least 2 cycles of CKIL(32K) | ||
216 | * due to hardware design requirement, which is | ||
217 | * ~61us, here we use 65us for safe | ||
218 | */ | ||
219 | udelay(65); | ||
220 | |||
221 | /* restore GPC interrupt mask settings */ | ||
222 | imx_gpc_restore_all(); | ||
223 | } | ||
224 | |||
225 | static void imx6q_enable_wb(bool enable) | ||
226 | { | ||
227 | u32 val; | ||
228 | |||
229 | /* configure well bias enable bit */ | ||
230 | val = readl_relaxed(ccm_base + CLPCR); | ||
231 | val &= ~BM_CLPCR_WB_PER_AT_LPM; | ||
232 | val |= enable ? BM_CLPCR_WB_PER_AT_LPM : 0; | ||
233 | writel_relaxed(val, ccm_base + CLPCR); | ||
234 | |||
235 | /* configure well bias count */ | ||
236 | val = readl_relaxed(ccm_base + CCR); | ||
237 | val &= ~BM_CCR_WB_COUNT; | ||
238 | val |= enable ? BM_CCR_WB_COUNT : 0; | ||
239 | writel_relaxed(val, ccm_base + CCR); | ||
240 | } | ||
241 | |||
242 | int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode) | ||
243 | { | ||
244 | struct irq_data *iomuxc_irq_data = irq_get_irq_data(32); | ||
245 | u32 val = readl_relaxed(ccm_base + CLPCR); | ||
246 | |||
247 | val &= ~BM_CLPCR_LPM; | ||
248 | switch (mode) { | ||
249 | case WAIT_CLOCKED: | ||
250 | break; | ||
251 | case WAIT_UNCLOCKED: | ||
252 | val |= 0x1 << BP_CLPCR_LPM; | ||
253 | val |= BM_CLPCR_ARM_CLK_DIS_ON_LPM; | ||
254 | break; | ||
255 | case STOP_POWER_ON: | ||
256 | val |= 0x2 << BP_CLPCR_LPM; | ||
257 | break; | ||
258 | case WAIT_UNCLOCKED_POWER_OFF: | ||
259 | val |= 0x1 << BP_CLPCR_LPM; | ||
260 | val &= ~BM_CLPCR_VSTBY; | ||
261 | val &= ~BM_CLPCR_SBYOS; | ||
262 | break; | ||
263 | case STOP_POWER_OFF: | ||
264 | val |= 0x2 << BP_CLPCR_LPM; | ||
265 | val |= 0x3 << BP_CLPCR_STBY_COUNT; | ||
266 | val |= BM_CLPCR_VSTBY; | ||
267 | val |= BM_CLPCR_SBYOS; | ||
268 | if (cpu_is_imx6sl()) { | ||
269 | val |= BM_CLPCR_BYPASS_PMIC_READY; | ||
270 | val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS; | ||
271 | } else { | ||
272 | val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS; | ||
273 | } | ||
274 | break; | ||
275 | default: | ||
276 | return -EINVAL; | ||
277 | } | ||
278 | |||
279 | /* | ||
280 | * ERR007265: CCM: When improper low-power sequence is used, | ||
281 | * the SoC enters low power mode before the ARM core executes WFI. | ||
282 | * | ||
283 | * Software workaround: | ||
284 | * 1) Software should trigger IRQ #32 (IOMUX) to be always pending | ||
285 | * by setting IOMUX_GPR1_GINT. | ||
286 | * 2) Software should then unmask IRQ #32 in GPC before setting CCM | ||
287 | * Low-Power mode. | ||
288 | * 3) Software should mask IRQ #32 right after CCM Low-Power mode | ||
289 | * is set (set bits 0-1 of CCM_CLPCR). | ||
290 | */ | ||
291 | imx_gpc_irq_unmask(iomuxc_irq_data); | ||
292 | writel_relaxed(val, ccm_base + CLPCR); | ||
293 | imx_gpc_irq_mask(iomuxc_irq_data); | ||
294 | |||
295 | return 0; | ||
296 | } | ||
297 | |||
298 | static int imx6q_suspend_finish(unsigned long val) | ||
299 | { | ||
300 | if (!imx6_suspend_in_ocram_fn) { | ||
301 | cpu_do_idle(); | ||
302 | } else { | ||
303 | /* | ||
304 | * call low level suspend function in ocram, | ||
305 | * as we need to float DDR IO. | ||
306 | */ | ||
307 | local_flush_tlb_all(); | ||
308 | imx6_suspend_in_ocram_fn(suspend_ocram_base); | ||
309 | } | ||
310 | |||
311 | return 0; | ||
312 | } | ||
313 | |||
314 | static int imx6q_pm_enter(suspend_state_t state) | ||
315 | { | ||
316 | switch (state) { | ||
317 | case PM_SUSPEND_MEM: | ||
318 | imx6q_set_lpm(STOP_POWER_OFF); | ||
319 | imx6q_enable_wb(true); | ||
320 | /* | ||
321 | * For suspend into ocram, asm code already take care of | ||
322 | * RBC setting, so we do NOT need to do that here. | ||
323 | */ | ||
324 | if (!imx6_suspend_in_ocram_fn) | ||
325 | imx6q_enable_rbc(true); | ||
326 | imx_gpc_pre_suspend(); | ||
327 | imx_anatop_pre_suspend(); | ||
328 | imx_set_cpu_jump(0, v7_cpu_resume); | ||
329 | /* Zzz ... */ | ||
330 | cpu_suspend(0, imx6q_suspend_finish); | ||
331 | if (cpu_is_imx6q() || cpu_is_imx6dl()) | ||
332 | imx_smp_prepare(); | ||
333 | imx_anatop_post_resume(); | ||
334 | imx_gpc_post_resume(); | ||
335 | imx6q_enable_rbc(false); | ||
336 | imx6q_enable_wb(false); | ||
337 | imx6q_set_lpm(WAIT_CLOCKED); | ||
338 | break; | ||
339 | default: | ||
340 | return -EINVAL; | ||
341 | } | ||
342 | |||
343 | return 0; | ||
344 | } | ||
345 | |||
346 | static const struct platform_suspend_ops imx6q_pm_ops = { | ||
347 | .enter = imx6q_pm_enter, | ||
348 | .valid = suspend_valid_only_mem, | ||
349 | }; | ||
350 | |||
351 | void __init imx6q_pm_set_ccm_base(void __iomem *base) | ||
352 | { | ||
353 | ccm_base = base; | ||
354 | } | ||
355 | |||
356 | static int __init imx6_pm_get_base(struct imx6_pm_base *base, | ||
357 | const char *compat) | ||
358 | { | ||
359 | struct device_node *node; | ||
360 | struct resource res; | ||
361 | int ret = 0; | ||
362 | |||
363 | node = of_find_compatible_node(NULL, NULL, compat); | ||
364 | if (!node) { | ||
365 | ret = -ENODEV; | ||
366 | goto out; | ||
367 | } | ||
368 | |||
369 | ret = of_address_to_resource(node, 0, &res); | ||
370 | if (ret) | ||
371 | goto put_node; | ||
372 | |||
373 | base->pbase = res.start; | ||
374 | base->vbase = ioremap(res.start, resource_size(&res)); | ||
375 | if (!base->vbase) | ||
376 | ret = -ENOMEM; | ||
377 | |||
378 | put_node: | ||
379 | of_node_put(node); | ||
380 | out: | ||
381 | return ret; | ||
382 | } | ||
383 | |||
384 | static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata) | ||
385 | { | ||
386 | phys_addr_t ocram_pbase; | ||
387 | struct device_node *node; | ||
388 | struct platform_device *pdev; | ||
389 | struct imx6_cpu_pm_info *pm_info; | ||
390 | struct gen_pool *ocram_pool; | ||
391 | unsigned long ocram_base; | ||
392 | int i, ret = 0; | ||
393 | const u32 *mmdc_offset_array; | ||
394 | |||
395 | suspend_set_ops(&imx6q_pm_ops); | ||
396 | |||
397 | if (!socdata) { | ||
398 | pr_warn("%s: invalid argument!\n", __func__); | ||
399 | return -EINVAL; | ||
400 | } | ||
401 | |||
402 | node = of_find_compatible_node(NULL, NULL, "mmio-sram"); | ||
403 | if (!node) { | ||
404 | pr_warn("%s: failed to find ocram node!\n", __func__); | ||
405 | return -ENODEV; | ||
406 | } | ||
407 | |||
408 | pdev = of_find_device_by_node(node); | ||
409 | if (!pdev) { | ||
410 | pr_warn("%s: failed to find ocram device!\n", __func__); | ||
411 | ret = -ENODEV; | ||
412 | goto put_node; | ||
413 | } | ||
414 | |||
415 | ocram_pool = dev_get_gen_pool(&pdev->dev); | ||
416 | if (!ocram_pool) { | ||
417 | pr_warn("%s: ocram pool unavailable!\n", __func__); | ||
418 | ret = -ENODEV; | ||
419 | goto put_node; | ||
420 | } | ||
421 | |||
422 | ocram_base = gen_pool_alloc(ocram_pool, MX6Q_SUSPEND_OCRAM_SIZE); | ||
423 | if (!ocram_base) { | ||
424 | pr_warn("%s: unable to alloc ocram!\n", __func__); | ||
425 | ret = -ENOMEM; | ||
426 | goto put_node; | ||
427 | } | ||
428 | |||
429 | ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base); | ||
430 | |||
431 | suspend_ocram_base = __arm_ioremap_exec(ocram_pbase, | ||
432 | MX6Q_SUSPEND_OCRAM_SIZE, false); | ||
433 | |||
434 | pm_info = suspend_ocram_base; | ||
435 | pm_info->pbase = ocram_pbase; | ||
436 | pm_info->resume_addr = virt_to_phys(v7_cpu_resume); | ||
437 | pm_info->pm_info_size = sizeof(*pm_info); | ||
438 | |||
439 | /* | ||
440 | * ccm physical address is not used by asm code currently, | ||
441 | * so get ccm virtual address directly, as we already have | ||
442 | * it from ccm driver. | ||
443 | */ | ||
444 | pm_info->ccm_base.vbase = ccm_base; | ||
445 | |||
446 | ret = imx6_pm_get_base(&pm_info->mmdc_base, socdata->mmdc_compat); | ||
447 | if (ret) { | ||
448 | pr_warn("%s: failed to get mmdc base %d!\n", __func__, ret); | ||
449 | goto put_node; | ||
450 | } | ||
451 | |||
452 | ret = imx6_pm_get_base(&pm_info->src_base, socdata->src_compat); | ||
453 | if (ret) { | ||
454 | pr_warn("%s: failed to get src base %d!\n", __func__, ret); | ||
455 | goto src_map_failed; | ||
456 | } | ||
457 | |||
458 | ret = imx6_pm_get_base(&pm_info->iomuxc_base, socdata->iomuxc_compat); | ||
459 | if (ret) { | ||
460 | pr_warn("%s: failed to get iomuxc base %d!\n", __func__, ret); | ||
461 | goto iomuxc_map_failed; | ||
462 | } | ||
463 | |||
464 | ret = imx6_pm_get_base(&pm_info->gpc_base, socdata->gpc_compat); | ||
465 | if (ret) { | ||
466 | pr_warn("%s: failed to get gpc base %d!\n", __func__, ret); | ||
467 | goto gpc_map_failed; | ||
468 | } | ||
469 | |||
470 | ret = imx6_pm_get_base(&pm_info->l2_base, "arm,pl310-cache"); | ||
471 | if (ret) { | ||
472 | pr_warn("%s: failed to get pl310-cache base %d!\n", | ||
473 | __func__, ret); | ||
474 | goto pl310_cache_map_failed; | ||
475 | } | ||
476 | |||
477 | pm_info->cpu_type = socdata->cpu_type; | ||
478 | pm_info->mmdc_io_num = socdata->mmdc_io_num; | ||
479 | mmdc_offset_array = socdata->mmdc_io_offset; | ||
480 | |||
481 | for (i = 0; i < pm_info->mmdc_io_num; i++) { | ||
482 | pm_info->mmdc_io_val[i][0] = | ||
483 | mmdc_offset_array[i]; | ||
484 | pm_info->mmdc_io_val[i][1] = | ||
485 | readl_relaxed(pm_info->iomuxc_base.vbase + | ||
486 | mmdc_offset_array[i]); | ||
487 | } | ||
488 | |||
489 | imx6_suspend_in_ocram_fn = fncpy( | ||
490 | suspend_ocram_base + sizeof(*pm_info), | ||
491 | &imx6_suspend, | ||
492 | MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info)); | ||
493 | |||
494 | goto put_node; | ||
495 | |||
496 | pl310_cache_map_failed: | ||
497 | iounmap(&pm_info->gpc_base.vbase); | ||
498 | gpc_map_failed: | ||
499 | iounmap(&pm_info->iomuxc_base.vbase); | ||
500 | iomuxc_map_failed: | ||
501 | iounmap(&pm_info->src_base.vbase); | ||
502 | src_map_failed: | ||
503 | iounmap(&pm_info->mmdc_base.vbase); | ||
504 | put_node: | ||
505 | of_node_put(node); | ||
506 | |||
507 | return ret; | ||
508 | } | ||
509 | |||
510 | static void __init imx6_pm_common_init(const struct imx6_pm_socdata | ||
511 | *socdata) | ||
512 | { | ||
513 | struct regmap *gpr; | ||
514 | int ret; | ||
515 | |||
516 | WARN_ON(!ccm_base); | ||
517 | |||
518 | if (IS_ENABLED(CONFIG_SUSPEND)) { | ||
519 | ret = imx6q_suspend_init(socdata); | ||
520 | if (ret) | ||
521 | pr_warn("%s: No DDR LPM support with suspend %d!\n", | ||
522 | __func__, ret); | ||
523 | } | ||
524 | |||
525 | /* | ||
526 | * This is for SW workaround step #1 of ERR007265, see comments | ||
527 | * in imx6q_set_lpm for details of this errata. | ||
528 | * Force IOMUXC irq pending, so that the interrupt to GPC can be | ||
529 | * used to deassert dsm_request signal when the signal gets | ||
530 | * asserted unexpectedly. | ||
531 | */ | ||
532 | gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); | ||
533 | if (!IS_ERR(gpr)) | ||
534 | regmap_update_bits(gpr, IOMUXC_GPR1, IMX6Q_GPR1_GINT, | ||
535 | IMX6Q_GPR1_GINT); | ||
536 | } | ||
537 | |||
538 | void __init imx6q_pm_init(void) | ||
539 | { | ||
540 | imx6_pm_common_init(&imx6q_pm_data); | ||
541 | } | ||
542 | |||
543 | void __init imx6dl_pm_init(void) | ||
544 | { | ||
545 | imx6_pm_common_init(&imx6dl_pm_data); | ||
546 | } | ||
547 | |||
548 | void __init imx6sl_pm_init(void) | ||
549 | { | ||
550 | imx6_pm_common_init(&imx6sl_pm_data); | ||
551 | } | ||