mirror of
https://github.com/torvalds/linux.git
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Merge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson
* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: mach-ux500: configure board for the TPS61052 regulator v2 mach-ux500: provide ab8500 init vector mach-ux500: board support for AB8500 GPIO driver gpio: driver for 42 AB8500 GPIO pins
This commit is contained in:
Linus Torvalds
commit
bc5bbc4541
@ -23,6 +23,7 @@ menu "Ux500 target platform"
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config MACH_U8500
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bool "U8500 Development platform"
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depends on UX500_SOC_DB8500
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select TPS6105X
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help
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Include support for the mop500 development platform.
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@ -13,6 +13,30 @@
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#include <linux/regulator/ab8500.h>
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#include "board-mop500-regulators.h"
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/*
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* TPS61052 regulator
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*/
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static struct regulator_consumer_supply tps61052_vaudio_consumers[] = {
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/*
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* Boost converter supply to raise voltage on audio speaker, this
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* is actually connected to three pins, VInVhfL (left amplifier)
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* VInVhfR (right amplifier) and VIntDClassInt - all three must
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* be connected to the same voltage.
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*/
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REGULATOR_SUPPLY("vintdclassint", "ab8500-codec.0"),
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};
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struct regulator_init_data tps61052_regulator = {
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.constraints = {
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.name = "vaudio-hf",
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.min_uV = 4500000,
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.max_uV = 4500000,
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(tps61052_vaudio_consumers),
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.consumer_supplies = tps61052_vaudio_consumers,
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};
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static struct regulator_consumer_supply ab8500_vaux1_consumers[] = {
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/* External displays, connector on board 2v5 power supply */
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REGULATOR_SUPPLY("vaux12v5", "mcde.0"),
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@ -62,6 +86,182 @@ static struct regulator_consumer_supply ab8500_vana_consumers[] = {
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REGULATOR_SUPPLY("vsmps2", "mcde.0"),
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};
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/* ab8500 regulator register initialization */
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struct ab8500_regulator_reg_init
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ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS] = {
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/*
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* VanaRequestCtrl = HP/LP depending on VxRequest
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* VextSupply1RequestCtrl = HP/LP depending on VxRequest
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0x00),
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/*
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* VextSupply2RequestCtrl = HP/LP depending on VxRequest
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* VextSupply3RequestCtrl = HP/LP depending on VxRequest
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* Vaux1RequestCtrl = HP/LP depending on VxRequest
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* Vaux2RequestCtrl = HP/LP depending on VxRequest
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0x00),
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/*
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* Vaux3RequestCtrl = HP/LP depending on VxRequest
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* SwHPReq = Control through SWValid disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x00),
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/*
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* VanaSysClkReq1HPValid = disabled
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* Vaux1SysClkReq1HPValid = disabled
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* Vaux2SysClkReq1HPValid = disabled
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* Vaux3SysClkReq1HPValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0x00),
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/*
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* VextSupply1SysClkReq1HPValid = disabled
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* VextSupply2SysClkReq1HPValid = disabled
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* VextSupply3SysClkReq1HPValid = SysClkReq1 controlled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x40),
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/*
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* VanaHwHPReq1Valid = disabled
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* Vaux1HwHPreq1Valid = disabled
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* Vaux2HwHPReq1Valid = disabled
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* Vaux3HwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0x00),
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/*
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* VextSupply1HwHPReq1Valid = disabled
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* VextSupply2HwHPReq1Valid = disabled
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* VextSupply3HwHPReq1Valid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x00),
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/*
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* VanaHwHPReq2Valid = disabled
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* Vaux1HwHPReq2Valid = disabled
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* Vaux2HwHPReq2Valid = disabled
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* Vaux3HwHPReq2Valid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0x00),
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/*
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* VextSupply1HwHPReq2Valid = disabled
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* VextSupply2HwHPReq2Valid = disabled
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* VextSupply3HwHPReq2Valid = HWReq2 controlled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x04),
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/*
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* VanaSwHPReqValid = disabled
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* Vaux1SwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0x00),
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/*
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* Vaux2SwHPReqValid = disabled
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* Vaux3SwHPReqValid = disabled
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* VextSupply1SwHPReqValid = disabled
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* VextSupply2SwHPReqValid = disabled
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* VextSupply3SwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x00),
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/*
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* SysClkReq2Valid1 = SysClkReq2 controlled
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* SysClkReq3Valid1 = disabled
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* SysClkReq4Valid1 = SysClkReq4 controlled
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* SysClkReq5Valid1 = disabled
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* SysClkReq6Valid1 = SysClkReq6 controlled
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* SysClkReq7Valid1 = disabled
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* SysClkReq8Valid1 = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0x2a),
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/*
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* SysClkReq2Valid2 = disabled
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* SysClkReq3Valid2 = disabled
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* SysClkReq4Valid2 = disabled
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* SysClkReq5Valid2 = disabled
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* SysClkReq6Valid2 = SysClkReq6 controlled
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* SysClkReq7Valid2 = disabled
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* SysClkReq8Valid2 = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0x20),
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/*
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* VTVoutEna = disabled
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* Vintcore12Ena = disabled
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* Vintcore12Sel = 1.25 V
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* Vintcore12LP = inactive (HP)
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* VTVoutLP = inactive (HP)
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0x10),
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/*
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* VaudioEna = disabled
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* VdmicEna = disabled
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* Vamic1Ena = disabled
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* Vamic2Ena = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x00),
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/*
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* Vamic1_dzout = high-Z when Vamic1 is disabled
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* Vamic2_dzout = high-Z when Vamic2 is disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x00),
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/*
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* VPll = Hw controlled
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* VanaRegu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x02),
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/*
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* VrefDDREna = disabled
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* VrefDDRSleepMode = inactive (no pulldown)
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*/
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INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x00),
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/*
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* VextSupply1Regu = HW control
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* VextSupply2Regu = HW control
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* VextSupply3Regu = HW control
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* ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0
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* ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0
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*/
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INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0x2a),
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/*
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* Vaux1Regu = force HP
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* Vaux2Regu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x01),
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/*
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* Vaux3regu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x00),
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/*
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* Vsmps1 = 1.15V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VSMPS1SEL1, 0x24),
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/*
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* Vaux1Sel = 2.5 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x08),
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/*
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* Vaux2Sel = 2.9 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0d),
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/*
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* Vaux3Sel = 2.91 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07),
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/*
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* VextSupply12LP = disabled (no LP)
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x00),
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/*
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* Vaux1Disch = short discharge time
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* Vaux2Disch = short discharge time
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* Vaux3Disch = short discharge time
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* Vintcore12Disch = short discharge time
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* VTVoutDisch = short discharge time
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* VaudioDisch = short discharge time
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0x00),
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/*
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* VanaDisch = short discharge time
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* VdmicPullDownEna = pulldown disabled when Vdmic is disabled
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* VdmicDisch = short discharge time
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x00),
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};
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/* AB8500 regulators */
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struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
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/* supplies to the display/camera */
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@ -72,6 +272,7 @@ struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
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.max_uV = 2900000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS,
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.boot_on = 1, /* must be on for display */
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers),
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.consumer_supplies = ab8500_vaux1_consumers,
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@ -17,5 +17,6 @@
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extern struct ab8500_regulator_reg_init
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ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS];
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extern struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS];
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extern struct regulator_init_data tps61052_regulator;
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#endif
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@ -22,6 +22,8 @@
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#include <linux/mfd/ab8500.h>
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#include <linux/regulator/ab8500.h>
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#include <linux/mfd/tc3589x.h>
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#include <linux/mfd/tps6105x.h>
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#include <linux/mfd/ab8500/gpio.h>
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#include <linux/leds-lp5521.h>
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#include <linux/input.h>
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#include <linux/gpio_keys.h>
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@ -42,10 +44,35 @@
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#include "board-mop500.h"
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#include "board-mop500-regulators.h"
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static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
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.gpio_base = MOP500_AB8500_GPIO(0),
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.irq_base = MOP500_AB8500_VIR_GPIO_IRQ_BASE,
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/* config_reg is the initial configuration of ab8500 pins.
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* The pins can be configured as GPIO or alt functions based
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* on value present in GpioSel1 to GpioSel6 and AlternatFunction
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* register. This is the array of 7 configuration settings.
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* One has to compile time decide these settings. Below is the
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* explaination of these setting
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* GpioSel1 = 0x00 => Pins GPIO1 to GPIO8 are not used as GPIO
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* GpioSel2 = 0x1E => Pins GPIO10 to GPIO13 are configured as GPIO
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* GpioSel3 = 0x80 => Pin GPIO24 is configured as GPIO
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* GpioSel4 = 0x01 => Pin GPIo25 is configured as GPIO
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* GpioSel5 = 0x7A => Pins GPIO34, GPIO36 to GPIO39 are conf as GPIO
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* GpioSel6 = 0x00 => Pins GPIO41 & GPIo42 are not configured as GPIO
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* AlternaFunction = 0x00 => If Pins GPIO10 to 13 are not configured
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* as GPIO then this register selectes the alternate fucntions
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*/
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.config_reg = {0x00, 0x1E, 0x80, 0x01,
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0x7A, 0x00, 0x00},
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};
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static struct ab8500_platform_data ab8500_platdata = {
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.irq_base = MOP500_AB8500_IRQ_BASE,
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.regulator_reg_init = ab8500_regulator_reg_init,
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.num_regulator_reg_init = ARRAY_SIZE(ab8500_regulator_reg_init),
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.regulator = ab8500_regulators,
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.num_regulator = ARRAY_SIZE(ab8500_regulators),
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.gpio = &ab8500_gpio_pdata,
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};
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static struct resource ab8500_resources[] = {
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@ -66,6 +93,15 @@ struct platform_device ab8500_device = {
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.resource = ab8500_resources,
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};
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/*
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* TPS61052
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*/
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static struct tps6105x_platform_data mop500_tps61052_data = {
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.mode = TPS6105X_MODE_VOLTAGE,
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.regulator_data = &tps61052_regulator,
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};
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/*
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* TC35892
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*/
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@ -136,7 +172,7 @@ static struct lp5521_platform_data __initdata lp5521_sec_data = {
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.clock_mode = LP5521_CLOCK_EXT,
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};
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static struct i2c_board_info mop500_i2c0_devices[] = {
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static struct i2c_board_info __initdata mop500_i2c0_devices[] = {
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{
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I2C_BOARD_INFO("tc3589x", 0x42),
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.irq = NOMADIK_GPIO_TO_IRQ(217),
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@ -144,6 +180,14 @@ static struct i2c_board_info mop500_i2c0_devices[] = {
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},
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};
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/* I2C0 devices only available prior to HREFv60 */
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static struct i2c_board_info __initdata mop500_i2c0_old_devices[] = {
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{
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I2C_BOARD_INFO("tps61052", 0x33),
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.platform_data = &mop500_tps61052_data,
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},
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};
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static struct i2c_board_info __initdata mop500_i2c2_devices[] = {
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{
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/* lp5521 LED driver, 1st device */
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@ -406,6 +450,9 @@ static void __init mop500_init_machine(void)
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i2c_register_board_info(0, mop500_i2c0_devices,
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ARRAY_SIZE(mop500_i2c0_devices));
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if (!machine_is_hrefv60())
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i2c_register_board_info(0, mop500_i2c0_old_devices,
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ARRAY_SIZE(mop500_i2c0_old_devices));
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i2c_register_board_info(2, mop500_i2c2_devices,
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ARRAY_SIZE(mop500_i2c2_devices));
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}
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@ -27,6 +27,10 @@
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#define GPIO_BU21013_CS MOP500_EGPIO(13)
|
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#define GPIO_SDMMC_EN MOP500_EGPIO(17)
|
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#define GPIO_SDMMC_1V8_3V_SEL MOP500_EGPIO(18)
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#define MOP500_EGPIO_END MOP500_EGPIO(24)
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|
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/* GPIOs on the AB8500 mixed-signals circuit */
|
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#define MOP500_AB8500_GPIO(x) (MOP500_EGPIO_END + (x))
|
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|
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struct i2c_board_info;
|
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|
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|
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@ -35,9 +35,20 @@
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#define MOP500_STMPE1601_IRQBASE MOP500_EGPIO_IRQ_END
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#define MOP500_STMPE1601_IRQ(x) (MOP500_STMPE1601_IRQBASE + (x))
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|
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#define MOP500_NR_IRQS MOP500_STMPE1601_IRQ(STMPE_NR_INTERNAL_IRQS)
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#define MOP500_STMPE1601_IRQ_END \
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MOP500_STMPE1601_IRQ(STMPE_NR_INTERNAL_IRQS)
|
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|
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#define MOP500_IRQ_END MOP500_NR_IRQS
|
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/* AB8500 virtual gpio IRQ */
|
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#define AB8500_VIR_GPIO_NR_IRQS 16
|
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|
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#define MOP500_AB8500_VIR_GPIO_IRQ_BASE \
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MOP500_STMPE1601_IRQ_END
|
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#define MOP500_AB8500_VIR_GPIO_IRQ_END \
|
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(MOP500_AB8500_VIR_GPIO_IRQ_BASE + AB8500_VIR_GPIO_NR_IRQS)
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|
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#define MOP500_NR_IRQS MOP500_AB8500_VIR_GPIO_IRQ_END
|
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|
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#define MOP500_IRQ_END MOP500_NR_IRQS
|
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|
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#if MOP500_IRQ_END > IRQ_BOARD_END
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#undef IRQ_BOARD_END
|
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|
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@ -414,4 +414,9 @@ config GPIO_JANZ_TTL
|
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This driver provides support for driving the pins in output
|
||||
mode only. Input mode is not supported.
|
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|
||||
config AB8500_GPIO
|
||||
bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
|
||||
depends on AB8500_CORE
|
||||
help
|
||||
Select this to enable the AB8500 IC GPIO driver
|
||||
endif
|
||||
|
||||
@ -42,3 +42,4 @@ obj-$(CONFIG_GPIO_JANZ_TTL) += janz-ttl.o
|
||||
obj-$(CONFIG_GPIO_SX150X) += sx150x.o
|
||||
obj-$(CONFIG_GPIO_VX855) += vx855_gpio.o
|
||||
obj-$(CONFIG_GPIO_ML_IOH) += ml_ioh_gpio.o
|
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obj-$(CONFIG_AB8500_GPIO) += ab8500-gpio.o
|
||||
|
||||
522
drivers/gpio/ab8500-gpio.c
Normal file
522
drivers/gpio/ab8500-gpio.c
Normal file
@ -0,0 +1,522 @@
|
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/*
|
||||
* Copyright (C) ST-Ericsson SA 2011
|
||||
*
|
||||
* Author: BIBEK BASU <bibek.basu@stericsson.com>
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/mfd/ab8500.h>
|
||||
#include <linux/mfd/abx500.h>
|
||||
#include <linux/mfd/ab8500/gpio.h>
|
||||
|
||||
/*
|
||||
* GPIO registers offset
|
||||
* Bank: 0x10
|
||||
*/
|
||||
#define AB8500_GPIO_SEL1_REG 0x00
|
||||
#define AB8500_GPIO_SEL2_REG 0x01
|
||||
#define AB8500_GPIO_SEL3_REG 0x02
|
||||
#define AB8500_GPIO_SEL4_REG 0x03
|
||||
#define AB8500_GPIO_SEL5_REG 0x04
|
||||
#define AB8500_GPIO_SEL6_REG 0x05
|
||||
|
||||
#define AB8500_GPIO_DIR1_REG 0x10
|
||||
#define AB8500_GPIO_DIR2_REG 0x11
|
||||
#define AB8500_GPIO_DIR3_REG 0x12
|
||||
#define AB8500_GPIO_DIR4_REG 0x13
|
||||
#define AB8500_GPIO_DIR5_REG 0x14
|
||||
#define AB8500_GPIO_DIR6_REG 0x15
|
||||
|
||||
#define AB8500_GPIO_OUT1_REG 0x20
|
||||
#define AB8500_GPIO_OUT2_REG 0x21
|
||||
#define AB8500_GPIO_OUT3_REG 0x22
|
||||
#define AB8500_GPIO_OUT4_REG 0x23
|
||||
#define AB8500_GPIO_OUT5_REG 0x24
|
||||
#define AB8500_GPIO_OUT6_REG 0x25
|
||||
|
||||
#define AB8500_GPIO_PUD1_REG 0x30
|
||||
#define AB8500_GPIO_PUD2_REG 0x31
|
||||
#define AB8500_GPIO_PUD3_REG 0x32
|
||||
#define AB8500_GPIO_PUD4_REG 0x33
|
||||
#define AB8500_GPIO_PUD5_REG 0x34
|
||||
#define AB8500_GPIO_PUD6_REG 0x35
|
||||
|
||||
#define AB8500_GPIO_IN1_REG 0x40
|
||||
#define AB8500_GPIO_IN2_REG 0x41
|
||||
#define AB8500_GPIO_IN3_REG 0x42
|
||||
#define AB8500_GPIO_IN4_REG 0x43
|
||||
#define AB8500_GPIO_IN5_REG 0x44
|
||||
#define AB8500_GPIO_IN6_REG 0x45
|
||||
#define AB8500_GPIO_ALTFUN_REG 0x45
|
||||
#define ALTFUN_REG_INDEX 6
|
||||
#define AB8500_NUM_GPIO 42
|
||||
#define AB8500_NUM_VIR_GPIO_IRQ 16
|
||||
|
||||
enum ab8500_gpio_action {
|
||||
NONE,
|
||||
STARTUP,
|
||||
SHUTDOWN,
|
||||
MASK,
|
||||
UNMASK
|
||||
};
|
||||
|
||||
struct ab8500_gpio {
|
||||
struct gpio_chip chip;
|
||||
struct ab8500 *parent;
|
||||
struct device *dev;
|
||||
struct mutex lock;
|
||||
u32 irq_base;
|
||||
enum ab8500_gpio_action irq_action;
|
||||
u16 rising;
|
||||
u16 falling;
|
||||
};
|
||||
/**
|
||||
* to_ab8500_gpio() - get the pointer to ab8500_gpio
|
||||
* @chip: Member of the structure ab8500_gpio
|
||||
*/
|
||||
static inline struct ab8500_gpio *to_ab8500_gpio(struct gpio_chip *chip)
|
||||
{
|
||||
return container_of(chip, struct ab8500_gpio, chip);
|
||||
}
|
||||
|
||||
static int ab8500_gpio_set_bits(struct gpio_chip *chip, u8 reg,
|
||||
unsigned offset, int val)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = to_ab8500_gpio(chip);
|
||||
u8 pos = offset % 8;
|
||||
int ret;
|
||||
|
||||
reg = reg + (offset / 8);
|
||||
ret = abx500_mask_and_set_register_interruptible(ab8500_gpio->dev,
|
||||
AB8500_MISC, reg, 1 << pos, val << pos);
|
||||
if (ret < 0)
|
||||
dev_err(ab8500_gpio->dev, "%s write failed\n", __func__);
|
||||
return ret;
|
||||
}
|
||||
/**
|
||||
* ab8500_gpio_get() - Get the particular GPIO value
|
||||
* @chip: Gpio device
|
||||
* @offset: GPIO number to read
|
||||
*/
|
||||
static int ab8500_gpio_get(struct gpio_chip *chip, unsigned offset)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = to_ab8500_gpio(chip);
|
||||
u8 mask = 1 << (offset % 8);
|
||||
u8 reg = AB8500_GPIO_OUT1_REG + (offset / 8);
|
||||
int ret;
|
||||
u8 data;
|
||||
ret = abx500_get_register_interruptible(ab8500_gpio->dev, AB8500_MISC,
|
||||
reg, &data);
|
||||
if (ret < 0) {
|
||||
dev_err(ab8500_gpio->dev, "%s read failed\n", __func__);
|
||||
return ret;
|
||||
}
|
||||
return (data & mask) >> (offset % 8);
|
||||
}
|
||||
|
||||
static void ab8500_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = to_ab8500_gpio(chip);
|
||||
int ret;
|
||||
/* Write the data */
|
||||
ret = ab8500_gpio_set_bits(chip, AB8500_GPIO_OUT1_REG, offset, 1);
|
||||
if (ret < 0)
|
||||
dev_err(ab8500_gpio->dev, "%s write failed\n", __func__);
|
||||
}
|
||||
|
||||
static int ab8500_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
|
||||
int val)
|
||||
{
|
||||
int ret;
|
||||
/* set direction as output */
|
||||
ret = ab8500_gpio_set_bits(chip, AB8500_GPIO_DIR1_REG, offset, 1);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
/* disable pull down */
|
||||
ret = ab8500_gpio_set_bits(chip, AB8500_GPIO_PUD1_REG, offset, 1);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
/* set the output as 1 or 0 */
|
||||
return ab8500_gpio_set_bits(chip, AB8500_GPIO_OUT1_REG, offset, val);
|
||||
|
||||
}
|
||||
|
||||
static int ab8500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
|
||||
{
|
||||
/* set the register as input */
|
||||
return ab8500_gpio_set_bits(chip, AB8500_GPIO_DIR1_REG, offset, 0);
|
||||
}
|
||||
|
||||
static int ab8500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
|
||||
{
|
||||
/*
|
||||
* Only some GPIOs are interrupt capable, and they are
|
||||
* organized in discontiguous clusters:
|
||||
*
|
||||
* GPIO6 to GPIO13
|
||||
* GPIO24 and GPIO25
|
||||
* GPIO36 to GPIO41
|
||||
*/
|
||||
static struct ab8500_gpio_irq_cluster {
|
||||
int start;
|
||||
int end;
|
||||
} clusters[] = {
|
||||
{.start = 6, .end = 13},
|
||||
{.start = 24, .end = 25},
|
||||
{.start = 36, .end = 41},
|
||||
};
|
||||
struct ab8500_gpio *ab8500_gpio = to_ab8500_gpio(chip);
|
||||
int base = ab8500_gpio->irq_base;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(clusters); i++) {
|
||||
struct ab8500_gpio_irq_cluster *cluster = &clusters[i];
|
||||
|
||||
if (offset >= cluster->start && offset <= cluster->end)
|
||||
return base + offset - cluster->start;
|
||||
|
||||
/* Advance by the number of gpios in this cluster */
|
||||
base += cluster->end - cluster->start + 1;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static struct gpio_chip ab8500gpio_chip = {
|
||||
.label = "ab8500_gpio",
|
||||
.owner = THIS_MODULE,
|
||||
.direction_input = ab8500_gpio_direction_input,
|
||||
.get = ab8500_gpio_get,
|
||||
.direction_output = ab8500_gpio_direction_output,
|
||||
.set = ab8500_gpio_set,
|
||||
.to_irq = ab8500_gpio_to_irq,
|
||||
};
|
||||
|
||||
static unsigned int irq_to_rising(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
int offset = irq - ab8500_gpio->irq_base;
|
||||
int new_irq = offset + AB8500_INT_GPIO6R
|
||||
+ ab8500_gpio->parent->irq_base;
|
||||
return new_irq;
|
||||
}
|
||||
|
||||
static unsigned int irq_to_falling(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
int offset = irq - ab8500_gpio->irq_base;
|
||||
int new_irq = offset + AB8500_INT_GPIO6F
|
||||
+ ab8500_gpio->parent->irq_base;
|
||||
return new_irq;
|
||||
|
||||
}
|
||||
|
||||
static unsigned int rising_to_irq(unsigned int irq, void *dev)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = dev;
|
||||
int offset = irq - AB8500_INT_GPIO6R
|
||||
- ab8500_gpio->parent->irq_base ;
|
||||
int new_irq = offset + ab8500_gpio->irq_base;
|
||||
return new_irq;
|
||||
}
|
||||
|
||||
static unsigned int falling_to_irq(unsigned int irq, void *dev)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = dev;
|
||||
int offset = irq - AB8500_INT_GPIO6F
|
||||
- ab8500_gpio->parent->irq_base ;
|
||||
int new_irq = offset + ab8500_gpio->irq_base;
|
||||
return new_irq;
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* IRQ handler
|
||||
*/
|
||||
|
||||
static irqreturn_t handle_rising(int irq, void *dev)
|
||||
{
|
||||
|
||||
handle_nested_irq(rising_to_irq(irq , dev));
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t handle_falling(int irq, void *dev)
|
||||
{
|
||||
|
||||
handle_nested_irq(falling_to_irq(irq, dev));
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void ab8500_gpio_irq_lock(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
mutex_lock(&ab8500_gpio->lock);
|
||||
}
|
||||
|
||||
static void ab8500_gpio_irq_sync_unlock(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
int offset = irq - ab8500_gpio->irq_base;
|
||||
bool rising = ab8500_gpio->rising & BIT(offset);
|
||||
bool falling = ab8500_gpio->falling & BIT(offset);
|
||||
int ret;
|
||||
|
||||
switch (ab8500_gpio->irq_action) {
|
||||
case STARTUP:
|
||||
if (rising)
|
||||
ret = request_threaded_irq(irq_to_rising(irq),
|
||||
NULL, handle_rising,
|
||||
IRQF_TRIGGER_RISING,
|
||||
"ab8500-gpio-r", ab8500_gpio);
|
||||
if (falling)
|
||||
ret = request_threaded_irq(irq_to_falling(irq),
|
||||
NULL, handle_falling,
|
||||
IRQF_TRIGGER_FALLING,
|
||||
"ab8500-gpio-f", ab8500_gpio);
|
||||
break;
|
||||
case SHUTDOWN:
|
||||
if (rising)
|
||||
free_irq(irq_to_rising(irq), ab8500_gpio);
|
||||
if (falling)
|
||||
free_irq(irq_to_falling(irq), ab8500_gpio);
|
||||
break;
|
||||
case MASK:
|
||||
if (rising)
|
||||
disable_irq(irq_to_rising(irq));
|
||||
if (falling)
|
||||
disable_irq(irq_to_falling(irq));
|
||||
break;
|
||||
case UNMASK:
|
||||
if (rising)
|
||||
enable_irq(irq_to_rising(irq));
|
||||
if (falling)
|
||||
enable_irq(irq_to_falling(irq));
|
||||
break;
|
||||
case NONE:
|
||||
break;
|
||||
}
|
||||
ab8500_gpio->irq_action = NONE;
|
||||
ab8500_gpio->rising &= ~(BIT(offset));
|
||||
ab8500_gpio->falling &= ~(BIT(offset));
|
||||
mutex_unlock(&ab8500_gpio->lock);
|
||||
}
|
||||
|
||||
|
||||
static void ab8500_gpio_irq_mask(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
ab8500_gpio->irq_action = MASK;
|
||||
}
|
||||
|
||||
static void ab8500_gpio_irq_unmask(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
ab8500_gpio->irq_action = UNMASK;
|
||||
}
|
||||
|
||||
static int ab8500_gpio_irq_set_type(unsigned int irq, unsigned int type)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
int offset = irq - ab8500_gpio->irq_base;
|
||||
|
||||
if (type == IRQ_TYPE_EDGE_BOTH) {
|
||||
ab8500_gpio->rising = BIT(offset);
|
||||
ab8500_gpio->falling = BIT(offset);
|
||||
} else if (type == IRQ_TYPE_EDGE_RISING) {
|
||||
ab8500_gpio->rising = BIT(offset);
|
||||
} else {
|
||||
ab8500_gpio->falling = BIT(offset);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned int ab8500_gpio_irq_startup(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
ab8500_gpio->irq_action = STARTUP;
|
||||
return 0;
|
||||
}
|
||||
|
||||
void ab8500_gpio_irq_shutdown(unsigned int irq)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = get_irq_chip_data(irq);
|
||||
ab8500_gpio->irq_action = SHUTDOWN;
|
||||
}
|
||||
|
||||
static struct irq_chip ab8500_gpio_irq_chip = {
|
||||
.name = "ab8500-gpio",
|
||||
.startup = ab8500_gpio_irq_startup,
|
||||
.shutdown = ab8500_gpio_irq_shutdown,
|
||||
.bus_lock = ab8500_gpio_irq_lock,
|
||||
.bus_sync_unlock = ab8500_gpio_irq_sync_unlock,
|
||||
.mask = ab8500_gpio_irq_mask,
|
||||
.unmask = ab8500_gpio_irq_unmask,
|
||||
.set_type = ab8500_gpio_irq_set_type,
|
||||
};
|
||||
|
||||
static int ab8500_gpio_irq_init(struct ab8500_gpio *ab8500_gpio)
|
||||
{
|
||||
u32 base = ab8500_gpio->irq_base;
|
||||
int irq;
|
||||
|
||||
for (irq = base; irq < base + AB8500_NUM_VIR_GPIO_IRQ ; irq++) {
|
||||
set_irq_chip_data(irq, ab8500_gpio);
|
||||
set_irq_chip_and_handler(irq, &ab8500_gpio_irq_chip,
|
||||
handle_simple_irq);
|
||||
set_irq_nested_thread(irq, 1);
|
||||
#ifdef CONFIG_ARM
|
||||
set_irq_flags(irq, IRQF_VALID);
|
||||
#else
|
||||
set_irq_noprobe(irq);
|
||||
#endif
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void ab8500_gpio_irq_remove(struct ab8500_gpio *ab8500_gpio)
|
||||
{
|
||||
int base = ab8500_gpio->irq_base;
|
||||
int irq;
|
||||
|
||||
for (irq = base; irq < base + AB8500_NUM_VIR_GPIO_IRQ; irq++) {
|
||||
#ifdef CONFIG_ARM
|
||||
set_irq_flags(irq, 0);
|
||||
#endif
|
||||
set_irq_chip_and_handler(irq, NULL, NULL);
|
||||
set_irq_chip_data(irq, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
static int __devinit ab8500_gpio_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct ab8500_platform_data *ab8500_pdata =
|
||||
dev_get_platdata(pdev->dev.parent);
|
||||
struct ab8500_gpio_platform_data *pdata;
|
||||
struct ab8500_gpio *ab8500_gpio;
|
||||
int ret;
|
||||
int i;
|
||||
|
||||
pdata = ab8500_pdata->gpio;
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "gpio platform data missing\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ab8500_gpio = kzalloc(sizeof(struct ab8500_gpio), GFP_KERNEL);
|
||||
if (ab8500_gpio == NULL) {
|
||||
dev_err(&pdev->dev, "failed to allocate memory\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
ab8500_gpio->dev = &pdev->dev;
|
||||
ab8500_gpio->parent = dev_get_drvdata(pdev->dev.parent);
|
||||
ab8500_gpio->chip = ab8500gpio_chip;
|
||||
ab8500_gpio->chip.ngpio = AB8500_NUM_GPIO;
|
||||
ab8500_gpio->chip.dev = &pdev->dev;
|
||||
ab8500_gpio->chip.base = pdata->gpio_base;
|
||||
ab8500_gpio->irq_base = pdata->irq_base;
|
||||
/* initialize the lock */
|
||||
mutex_init(&ab8500_gpio->lock);
|
||||
/*
|
||||
* AB8500 core will handle and clear the IRQ
|
||||
* configre GPIO based on config-reg value.
|
||||
* These values are for selecting the PINs as
|
||||
* GPIO or alternate function
|
||||
*/
|
||||
for (i = AB8500_GPIO_SEL1_REG; i <= AB8500_GPIO_SEL6_REG; i++) {
|
||||
ret = abx500_set_register_interruptible(ab8500_gpio->dev,
|
||||
AB8500_MISC, i,
|
||||
pdata->config_reg[i]);
|
||||
if (ret < 0)
|
||||
goto out_free;
|
||||
}
|
||||
ret = abx500_set_register_interruptible(ab8500_gpio->dev, AB8500_MISC,
|
||||
AB8500_GPIO_ALTFUN_REG,
|
||||
pdata->config_reg[ALTFUN_REG_INDEX]);
|
||||
if (ret < 0)
|
||||
goto out_free;
|
||||
|
||||
ret = ab8500_gpio_irq_init(ab8500_gpio);
|
||||
if (ret)
|
||||
goto out_free;
|
||||
ret = gpiochip_add(&ab8500_gpio->chip);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "unable to add gpiochip: %d\n",
|
||||
ret);
|
||||
goto out_rem_irq;
|
||||
}
|
||||
platform_set_drvdata(pdev, ab8500_gpio);
|
||||
return 0;
|
||||
|
||||
out_rem_irq:
|
||||
ab8500_gpio_irq_remove(ab8500_gpio);
|
||||
out_free:
|
||||
mutex_destroy(&ab8500_gpio->lock);
|
||||
kfree(ab8500_gpio);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* ab8500_gpio_remove() - remove Ab8500-gpio driver
|
||||
* @pdev : Platform device registered
|
||||
*/
|
||||
static int __devexit ab8500_gpio_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct ab8500_gpio *ab8500_gpio = platform_get_drvdata(pdev);
|
||||
int ret;
|
||||
|
||||
ret = gpiochip_remove(&ab8500_gpio->chip);
|
||||
if (ret < 0) {
|
||||
dev_err(ab8500_gpio->dev, "unable to remove gpiochip:\
|
||||
%d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
mutex_destroy(&ab8500_gpio->lock);
|
||||
kfree(ab8500_gpio);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver ab8500_gpio_driver = {
|
||||
.driver = {
|
||||
.name = "ab8500-gpio",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ab8500_gpio_probe,
|
||||
.remove = __devexit_p(ab8500_gpio_remove),
|
||||
};
|
||||
|
||||
static int __init ab8500_gpio_init(void)
|
||||
{
|
||||
return platform_driver_register(&ab8500_gpio_driver);
|
||||
}
|
||||
arch_initcall(ab8500_gpio_init);
|
||||
|
||||
static void __exit ab8500_gpio_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&ab8500_gpio_driver);
|
||||
}
|
||||
module_exit(ab8500_gpio_exit);
|
||||
|
||||
MODULE_AUTHOR("BIBEK BASU <bibek.basu@stericsson.com>");
|
||||
MODULE_DESCRIPTION("Driver allows to use AB8500 unused pins\
|
||||
to be used as GPIO");
|
||||
MODULE_ALIAS("AB8500 GPIO driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
@ -362,6 +362,15 @@ static void ab8500_irq_remove(struct ab8500 *ab8500)
|
||||
}
|
||||
}
|
||||
|
||||
static struct resource ab8500_gpio_resources[] = {
|
||||
{
|
||||
.name = "GPIO_INT6",
|
||||
.start = AB8500_INT_GPIO6R,
|
||||
.end = AB8500_INT_GPIO41F,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
}
|
||||
};
|
||||
|
||||
static struct resource ab8500_gpadc_resources[] = {
|
||||
{
|
||||
.name = "HW_CONV_END",
|
||||
@ -595,6 +604,11 @@ static struct mfd_cell ab8500_devs[] = {
|
||||
{
|
||||
.name = "ab8500-regulator",
|
||||
},
|
||||
{
|
||||
.name = "ab8500-gpio",
|
||||
.num_resources = ARRAY_SIZE(ab8500_gpio_resources),
|
||||
.resources = ab8500_gpio_resources,
|
||||
},
|
||||
{
|
||||
.name = "ab8500-gpadc",
|
||||
.num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
|
||||
|
||||
@ -97,7 +97,7 @@ static void __exit ab8500_i2c_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&ab8500_i2c_driver);
|
||||
}
|
||||
subsys_initcall(ab8500_i2c_init);
|
||||
arch_initcall(ab8500_i2c_init);
|
||||
module_exit(ab8500_i2c_exit);
|
||||
|
||||
MODULE_AUTHOR("Mattias WALLIN <mattias.wallin@stericsson.com");
|
||||
|
||||
@ -74,6 +74,45 @@
|
||||
#define AB8500_INT_ACC_DETECT_21DB_F 37
|
||||
#define AB8500_INT_ACC_DETECT_21DB_R 38
|
||||
#define AB8500_INT_GP_SW_ADC_CONV_END 39
|
||||
#define AB8500_INT_ACC_DETECT_1DB_F 33
|
||||
#define AB8500_INT_ACC_DETECT_1DB_R 34
|
||||
#define AB8500_INT_ACC_DETECT_22DB_F 35
|
||||
#define AB8500_INT_ACC_DETECT_22DB_R 36
|
||||
#define AB8500_INT_ACC_DETECT_21DB_F 37
|
||||
#define AB8500_INT_ACC_DETECT_21DB_R 38
|
||||
#define AB8500_INT_GP_SW_ADC_CONV_END 39
|
||||
#define AB8500_INT_GPIO6R 40
|
||||
#define AB8500_INT_GPIO7R 41
|
||||
#define AB8500_INT_GPIO8R 42
|
||||
#define AB8500_INT_GPIO9R 43
|
||||
#define AB8500_INT_GPIO10R 44
|
||||
#define AB8500_INT_GPIO11R 45
|
||||
#define AB8500_INT_GPIO12R 46
|
||||
#define AB8500_INT_GPIO13R 47
|
||||
#define AB8500_INT_GPIO24R 48
|
||||
#define AB8500_INT_GPIO25R 49
|
||||
#define AB8500_INT_GPIO36R 50
|
||||
#define AB8500_INT_GPIO37R 51
|
||||
#define AB8500_INT_GPIO38R 52
|
||||
#define AB8500_INT_GPIO39R 53
|
||||
#define AB8500_INT_GPIO40R 54
|
||||
#define AB8500_INT_GPIO41R 55
|
||||
#define AB8500_INT_GPIO6F 56
|
||||
#define AB8500_INT_GPIO7F 57
|
||||
#define AB8500_INT_GPIO8F 58
|
||||
#define AB8500_INT_GPIO9F 59
|
||||
#define AB8500_INT_GPIO10F 60
|
||||
#define AB8500_INT_GPIO11F 61
|
||||
#define AB8500_INT_GPIO12F 62
|
||||
#define AB8500_INT_GPIO13F 63
|
||||
#define AB8500_INT_GPIO24F 64
|
||||
#define AB8500_INT_GPIO25F 65
|
||||
#define AB8500_INT_GPIO36F 66
|
||||
#define AB8500_INT_GPIO37F 67
|
||||
#define AB8500_INT_GPIO38F 68
|
||||
#define AB8500_INT_GPIO39F 69
|
||||
#define AB8500_INT_GPIO40F 70
|
||||
#define AB8500_INT_GPIO41F 71
|
||||
#define AB8500_INT_ADP_SOURCE_ERROR 72
|
||||
#define AB8500_INT_ADP_SINK_ERROR 73
|
||||
#define AB8500_INT_ADP_PROBE_PLUG 74
|
||||
@ -141,6 +180,7 @@ struct ab8500 {
|
||||
|
||||
struct regulator_reg_init;
|
||||
struct regulator_init_data;
|
||||
struct ab8500_gpio_platform_data;
|
||||
|
||||
/**
|
||||
* struct ab8500_platform_data - AB8500 platform data
|
||||
@ -158,6 +198,7 @@ struct ab8500_platform_data {
|
||||
struct ab8500_regulator_reg_init *regulator_reg_init;
|
||||
int num_regulator;
|
||||
struct regulator_init_data *regulator;
|
||||
struct ab8500_gpio_platform_data *gpio;
|
||||
};
|
||||
|
||||
extern int __devinit ab8500_init(struct ab8500 *ab8500);
|
||||
|
||||
21
include/linux/mfd/ab8500/gpio.h
Normal file
21
include/linux/mfd/ab8500/gpio.h
Normal file
@ -0,0 +1,21 @@
|
||||
/*
|
||||
* Copyright ST-Ericsson 2010.
|
||||
*
|
||||
* Author: Bibek Basu <bibek.basu@stericsson.com>
|
||||
* Licensed under GPLv2.
|
||||
*/
|
||||
|
||||
#ifndef _AB8500_GPIO_H
|
||||
#define _AB8500_GPIO_H
|
||||
|
||||
/*
|
||||
* Platform data to register a block: only the initial gpio/irq number.
|
||||
*/
|
||||
|
||||
struct ab8500_gpio_platform_data {
|
||||
int gpio_base;
|
||||
u32 irq_base;
|
||||
u8 config_reg[7];
|
||||
};
|
||||
|
||||
#endif /* _AB8500_GPIO_H */
|
||||
Loading…
Reference in New Issue
Block a user