38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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/*
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* Copyright (C) 2010 STMicroelectronics
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* Author: Francesco M. Virlinzi <francesco.virlinzi@st.com>
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*
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* May be copied or modified under the terms of the GNU General Public
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* License V.2 ONLY. See linux/COPYING for more information.
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*/
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#ifndef __LINUX_STM_WAKEUP_DEVICES__
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#define __LINUX_STM_WAKEUP_DEVICES__
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/*
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* the stm_wakeup_devices tracks __ONLY__ the special devices which have
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* a constraint to wakeup; i.e.:
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*
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* - irb.scd needs at least 1 MHz
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*
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* - hdmi_cec needs 100 MHz.
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*
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* - eth_phy needs 25 MHz (125 MHz in gphy)
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*
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* In some SOC these IPs share the same clock therefore a fine tuning
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* has to be done to set the clock according
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* the currently enabled wakeup devices.
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*
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* Currently the other IPs (i.e.: ASC, PIO) didn't raise any particular issues.
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*/
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struct stm_wakeup_devices {
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int lirc_can_wakeup:1; /* lirc_scd_clk >= 1 MHz */
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int hdmi_can_wakeup:1; /* hdmi_clk == 100 MHz */
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int eth_phy_can_wakeup:1; /* eth_phy_clk ~= 25 MHz */
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int eth1_phy_can_wakeup:1;
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};
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int stm_check_wakeup_devices(struct stm_wakeup_devices *dev_wk);
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#endif
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