2 * OMAP3-specific clock framework functions
4 * Copyright (C) 2007-2008 Texas Instruments, Inc.
5 * Copyright (C) 2007-2011 Nokia Corporation
10 * Parts of this code are based on code written by
11 * Richard Woodruff, Tony Lindgren, Tuukka Tikkanen, Karthik Dasu,
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
20 #include <linux/kernel.h>
21 #include <linux/clk.h>
25 #include "clock34xx.h"
27 #include "cm-regbits-34xx.h"
30 * omap3430es2_clk_ssi_find_idlest - return CM_IDLEST info for SSI
31 * @clk: struct clk * being enabled
32 * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
33 * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
34 * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
36 * The OMAP3430ES2 SSI target CM_IDLEST bit is at a different shift
37 * from the CM_{I,F}CLKEN bit. Pass back the correct info via
38 * @idlest_reg and @idlest_bit. No return value.
40 #ifdef CONFIG_COMMON_CLK
41 static void omap3430es2_clk_ssi_find_idlest(struct clk_hw_omap *clk,
43 static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
45 void __iomem **idlest_reg,
51 r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
52 *idlest_reg = (__force void __iomem *)r;
53 *idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
54 *idlest_val = OMAP34XX_CM_IDLEST_VAL;
56 #ifdef CONFIG_COMMON_CLK
57 const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait = {
58 .find_idlest = omap3430es2_clk_ssi_find_idlest,
59 .find_companion = omap2_clk_dflt_find_companion,
62 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait = {
63 .allow_idle = omap2_clkt_iclk_allow_idle,
64 .deny_idle = omap2_clkt_iclk_deny_idle,
65 .find_idlest = omap3430es2_clk_ssi_find_idlest,
66 .find_companion = omap2_clk_dflt_find_companion,
69 const struct clkops clkops_omap3430es2_ssi_wait = {
70 .enable = omap2_dflt_clk_enable,
71 .disable = omap2_dflt_clk_disable,
72 .find_idlest = omap3430es2_clk_ssi_find_idlest,
73 .find_companion = omap2_clk_dflt_find_companion,
76 const struct clkops clkops_omap3430es2_iclk_ssi_wait = {
77 .enable = omap2_dflt_clk_enable,
78 .disable = omap2_dflt_clk_disable,
79 .find_idlest = omap3430es2_clk_ssi_find_idlest,
80 .find_companion = omap2_clk_dflt_find_companion,
81 .allow_idle = omap2_clkt_iclk_allow_idle,
82 .deny_idle = omap2_clkt_iclk_deny_idle,
87 * omap3430es2_clk_dss_usbhost_find_idlest - CM_IDLEST info for DSS, USBHOST
88 * @clk: struct clk * being enabled
89 * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
90 * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
91 * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
93 * Some OMAP modules on OMAP3 ES2+ chips have both initiator and
94 * target IDLEST bits. For our purposes, we are concerned with the
95 * target IDLEST bits, which exist at a different bit position than
96 * the *CLKEN bit position for these modules (DSS and USBHOST) (The
97 * default find_idlest code assumes that they are at the same
98 * position.) No return value.
100 #ifdef CONFIG_COMMON_CLK
101 static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk_hw_omap *clk,
103 static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
105 void __iomem **idlest_reg,
111 r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
112 *idlest_reg = (__force void __iomem *)r;
113 /* USBHOST_IDLE has same shift */
114 *idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
115 *idlest_val = OMAP34XX_CM_IDLEST_VAL;
117 #ifdef CONFIG_COMMON_CLK
118 const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait = {
119 .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest,
120 .find_companion = omap2_clk_dflt_find_companion,
123 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait = {
124 .allow_idle = omap2_clkt_iclk_allow_idle,
125 .deny_idle = omap2_clkt_iclk_deny_idle,
126 .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest,
127 .find_companion = omap2_clk_dflt_find_companion,
130 const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
131 .enable = omap2_dflt_clk_enable,
132 .disable = omap2_dflt_clk_disable,
133 .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest,
134 .find_companion = omap2_clk_dflt_find_companion,
137 const struct clkops clkops_omap3430es2_iclk_dss_usbhost_wait = {
138 .enable = omap2_dflt_clk_enable,
139 .disable = omap2_dflt_clk_disable,
140 .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest,
141 .find_companion = omap2_clk_dflt_find_companion,
142 .allow_idle = omap2_clkt_iclk_allow_idle,
143 .deny_idle = omap2_clkt_iclk_deny_idle,
148 * omap3430es2_clk_hsotgusb_find_idlest - return CM_IDLEST info for HSOTGUSB
149 * @clk: struct clk * being enabled
150 * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
151 * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
152 * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
154 * The OMAP3430ES2 HSOTGUSB target CM_IDLEST bit is at a different
155 * shift from the CM_{I,F}CLKEN bit. Pass back the correct info via
156 * @idlest_reg and @idlest_bit. No return value.
158 #ifdef CONFIG_COMMON_CLK
159 static void omap3430es2_clk_hsotgusb_find_idlest(struct clk_hw_omap *clk,
161 static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
163 void __iomem **idlest_reg,
169 r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
170 *idlest_reg = (__force void __iomem *)r;
171 *idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
172 *idlest_val = OMAP34XX_CM_IDLEST_VAL;
174 #ifdef CONFIG_COMMON_CLK
175 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait = {
176 .allow_idle = omap2_clkt_iclk_allow_idle,
177 .deny_idle = omap2_clkt_iclk_deny_idle,
178 .find_idlest = omap3430es2_clk_hsotgusb_find_idlest,
179 .find_companion = omap2_clk_dflt_find_companion,
182 const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait = {
183 .find_idlest = omap3430es2_clk_hsotgusb_find_idlest,
184 .find_companion = omap2_clk_dflt_find_companion,
187 const struct clkops clkops_omap3430es2_hsotgusb_wait = {
188 .enable = omap2_dflt_clk_enable,
189 .disable = omap2_dflt_clk_disable,
190 .find_idlest = omap3430es2_clk_hsotgusb_find_idlest,
191 .find_companion = omap2_clk_dflt_find_companion,
194 const struct clkops clkops_omap3430es2_iclk_hsotgusb_wait = {
195 .enable = omap2_dflt_clk_enable,
196 .disable = omap2_dflt_clk_disable,
197 .find_idlest = omap3430es2_clk_hsotgusb_find_idlest,
198 .find_companion = omap2_clk_dflt_find_companion,
199 .allow_idle = omap2_clkt_iclk_allow_idle,
200 .deny_idle = omap2_clkt_iclk_deny_idle,