Lines Matching +full:jz4740 +full:- +full:rtc
1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/clk-provider.h>
10 #include <linux/mfd/ingenic-tcu.h>
16 #include <dt-bindings/clock/ingenic,tcu.h>
22 #define pr_fmt(fmt) "ingenic-tcu-clk: " fmt
67 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_enable()
68 struct ingenic_tcu *tcu = tcu_clk->tcu; in ingenic_tcu_enable()
70 regmap_write(tcu->map, TCU_REG_TSCR, BIT(info->gate_bit)); in ingenic_tcu_enable()
78 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_disable()
79 struct ingenic_tcu *tcu = tcu_clk->tcu; in ingenic_tcu_disable()
81 regmap_write(tcu->map, TCU_REG_TSSR, BIT(info->gate_bit)); in ingenic_tcu_disable()
87 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_is_enabled()
90 regmap_read(tcu_clk->tcu->map, TCU_REG_TSR, &value); in ingenic_tcu_is_enabled()
92 return !(value & BIT(info->gate_bit)); in ingenic_tcu_is_enabled()
98 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_enable_regs()
99 struct ingenic_tcu *tcu = tcu_clk->tcu; in ingenic_tcu_enable_regs()
107 regmap_write(tcu->map, TCU_REG_TSCR, BIT(info->gate_bit)); in ingenic_tcu_enable_regs()
115 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_disable_regs()
116 struct ingenic_tcu *tcu = tcu_clk->tcu; in ingenic_tcu_disable_regs()
118 regmap_write(tcu->map, TCU_REG_TSSR, BIT(info->gate_bit)); in ingenic_tcu_disable_regs()
124 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_get_parent()
128 ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &val); in ingenic_tcu_get_parent()
129 WARN_ONCE(ret < 0, "Unable to read TCSR %d", tcu_clk->idx); in ingenic_tcu_get_parent()
131 return ffs(val & TCU_TCSR_PARENT_CLOCK_MASK) - 1; in ingenic_tcu_get_parent()
137 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_set_parent()
143 ret = regmap_update_bits(tcu_clk->tcu->map, info->tcsr_reg, in ingenic_tcu_set_parent()
145 WARN_ONCE(ret < 0, "Unable to update TCSR %d", tcu_clk->idx); in ingenic_tcu_set_parent()
157 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_recalc_rate()
161 ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &prescale); in ingenic_tcu_recalc_rate()
162 WARN_ONCE(ret < 0, "Unable to read TCSR %d", tcu_clk->idx); in ingenic_tcu_recalc_rate()
198 const struct ingenic_tcu_clk_info *info = tcu_clk->info; in ingenic_tcu_set_rate()
205 ret = regmap_update_bits(tcu_clk->tcu->map, info->tcsr_reg, in ingenic_tcu_set_rate()
208 WARN_ONCE(ret < 0, "Unable to update TCSR %d", tcu_clk->idx); in ingenic_tcu_set_rate()
231 [TCU_PARENT_RTC] = "rtc",
274 return -ENOMEM; in ingenic_tcu_register_clock()
276 tcu_clk->hw.init = &info->init_data; in ingenic_tcu_register_clock()
277 tcu_clk->idx = idx; in ingenic_tcu_register_clock()
278 tcu_clk->info = info; in ingenic_tcu_register_clock()
279 tcu_clk->tcu = tcu; in ingenic_tcu_register_clock()
282 ingenic_tcu_enable_regs(&tcu_clk->hw); in ingenic_tcu_register_clock()
283 regmap_update_bits(tcu->map, info->tcsr_reg, 0xffff, BIT(parent)); in ingenic_tcu_register_clock()
284 ingenic_tcu_disable_regs(&tcu_clk->hw); in ingenic_tcu_register_clock()
286 err = clk_hw_register(NULL, &tcu_clk->hw); in ingenic_tcu_register_clock()
292 clocks->hws[idx] = &tcu_clk->hw; in ingenic_tcu_register_clock()
322 { .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, },
323 { .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, },
324 { .compatible = "ingenic,jz4770-tcu", .data = &jz4770_soc_info, },
325 { .compatible = "ingenic,x1000-tcu", .data = &x1000_soc_info, },
343 return -ENOMEM; in ingenic_tcu_probe()
345 tcu->map = map; in ingenic_tcu_probe()
346 tcu->soc_info = id->data; in ingenic_tcu_probe()
348 if (tcu->soc_info->has_tcu_clk) { in ingenic_tcu_probe()
349 tcu->clk = of_clk_get_by_name(np, "tcu"); in ingenic_tcu_probe()
350 if (IS_ERR(tcu->clk)) { in ingenic_tcu_probe()
351 ret = PTR_ERR(tcu->clk); in ingenic_tcu_probe()
356 ret = clk_prepare_enable(tcu->clk); in ingenic_tcu_probe()
363 tcu->clocks = kzalloc(struct_size(tcu->clocks, hws, TCU_CLK_COUNT), in ingenic_tcu_probe()
365 if (!tcu->clocks) { in ingenic_tcu_probe()
366 ret = -ENOMEM; in ingenic_tcu_probe()
370 tcu->clocks->num = TCU_CLK_COUNT; in ingenic_tcu_probe()
372 for (i = 0; i < tcu->soc_info->num_channels; i++) { in ingenic_tcu_probe()
375 tcu->clocks); in ingenic_tcu_probe()
384 * except for the watchdog one, where we set the RTC clock as the in ingenic_tcu_probe()
385 * parent. Since the EXT and PCLK are much faster than the RTC clock, in ingenic_tcu_probe()
391 tcu->clocks); in ingenic_tcu_probe()
397 if (tcu->soc_info->has_ost) { in ingenic_tcu_probe()
401 tcu->clocks); in ingenic_tcu_probe()
408 ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, tcu->clocks); in ingenic_tcu_probe()
419 if (tcu->soc_info->has_ost) in ingenic_tcu_probe()
420 clk_hw_unregister(tcu->clocks->hws[i + 1]); in ingenic_tcu_probe()
422 clk_hw_unregister(tcu->clocks->hws[i]); in ingenic_tcu_probe()
424 for (i = 0; i < tcu->clocks->num; i++) in ingenic_tcu_probe()
425 if (tcu->clocks->hws[i]) in ingenic_tcu_probe()
426 clk_hw_unregister(tcu->clocks->hws[i]); in ingenic_tcu_probe()
427 kfree(tcu->clocks); in ingenic_tcu_probe()
429 if (tcu->soc_info->has_tcu_clk) in ingenic_tcu_probe()
430 clk_disable_unprepare(tcu->clk); in ingenic_tcu_probe()
432 if (tcu->soc_info->has_tcu_clk) in ingenic_tcu_probe()
433 clk_put(tcu->clk); in ingenic_tcu_probe()
443 if (tcu->clk) in tcu_pm_suspend()
444 clk_disable(tcu->clk); in tcu_pm_suspend()
453 if (tcu->clk) in tcu_pm_resume()
454 clk_enable(tcu->clk); in tcu_pm_resume()
473 CLK_OF_DECLARE_DRIVER(jz4740_cgu, "ingenic,jz4740-tcu", ingenic_tcu_init);
474 CLK_OF_DECLARE_DRIVER(jz4725b_cgu, "ingenic,jz4725b-tcu", ingenic_tcu_init);
475 CLK_OF_DECLARE_DRIVER(jz4770_cgu, "ingenic,jz4770-tcu", ingenic_tcu_init);
476 CLK_OF_DECLARE_DRIVER(x1000_cgu, "ingenic,x1000-tcu", ingenic_tcu_init);