diff options
| -rw-r--r-- | drivers/platform/x86/intel_mid_powerbtn.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_mid_powerbtn.c b/drivers/platform/x86/intel_mid_powerbtn.c index ac02a0b8bef3..12fbf400f228 100644 --- a/drivers/platform/x86/intel_mid_powerbtn.c +++ b/drivers/platform/x86/intel_mid_powerbtn.c @@ -28,6 +28,7 @@ #include <asm/cpu_device_id.h> #include <asm/intel-family.h> +#include <asm/intel_scu_ipc.h> #define DRIVER_NAME "msic_power_btn" @@ -39,12 +40,23 @@ */ #define MSIC_PWRBTNM (1 << 0) +/* Intel Tangier */ +#define MRFLD_PBSTAT_ADDR 0xfffff61a +#define MRFLD_PB_LEVEL (1 << 4) /* 1 - release, 0 - press */ + +/* Basin Cove PMIC */ +#define BCOVE_PBIRQ 0x02 +#define BCOVE_IRQLVL1MSK 0x0c +#define BCOVE_PBIRQMASK 0x0d + struct mid_pb_ddata { struct device *dev; + void __iomem *reg; int irq; struct input_dev *input; int (*pbstat)(struct mid_pb_ddata *ddata, int *value); int (*ack)(struct mid_pb_ddata *ddata); + int (*setup)(struct mid_pb_ddata *ddata); }; static int mfld_pbstat(struct mid_pb_ddata *ddata, int *value) @@ -78,6 +90,37 @@ static int mfld_ack(struct mid_pb_ddata *ddata) return intel_msic_reg_update(INTEL_MSIC_IRQLVL1MSK, 0, MSIC_PWRBTNM); } +static int mrfld_pbstat(struct mid_pb_ddata *ddata, int *value) +{ + struct input_dev *input = ddata->input; + u8 pbstat; + + pbstat = readb(ddata->reg); + + dev_dbg(input->dev.parent, "PB_INT status= %d\n", pbstat); + + *value = !(pbstat & MRFLD_PB_LEVEL); + return 0; +} + +static int mrfld_ack(struct mid_pb_ddata *ddata) +{ + return intel_scu_ipc_update_register(BCOVE_IRQLVL1MSK, 0, MSIC_PWRBTNM); +} + +static int mrfld_setup(struct mid_pb_ddata *ddata) +{ + ddata->reg = devm_ioremap_nocache(ddata->dev, MRFLD_PBSTAT_ADDR, 1); + if (!ddata->reg) + return -ENOMEM; + + /* Unmask the PBIRQ and MPBIRQ on Tangier */ + intel_scu_ipc_update_register(BCOVE_PBIRQ, 0, MSIC_PWRBTNM); + intel_scu_ipc_update_register(BCOVE_PBIRQMASK, 0, MSIC_PWRBTNM); + + return 0; +} + static irqreturn_t mid_pb_isr(int irq, void *dev_id) { struct mid_pb_ddata *ddata = dev_id; @@ -103,11 +146,18 @@ static struct mid_pb_ddata mfld_ddata = { .ack = mfld_ack, }; +static struct mid_pb_ddata mrfld_ddata = { + .pbstat = mrfld_pbstat, + .ack = mrfld_ack, + .setup = mrfld_setup, +}; + #define ICPU(model, ddata) \ { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (kernel_ulong_t)&ddata } static const struct x86_cpu_id mid_pb_cpu_ids[] = { ICPU(INTEL_FAM6_ATOM_PENWELL, mfld_ddata), + ICPU(INTEL_FAM6_ATOM_MERRIFIELD, mrfld_ddata), {} }; @@ -145,6 +195,12 @@ static int mid_pb_probe(struct platform_device *pdev) ddata->irq = irq; ddata->input = input; + if (ddata->setup) { + error = ddata->setup(ddata); + if (error) + return error; + } + error = devm_request_threaded_irq(&pdev->dev, irq, NULL, mid_pb_isr, IRQF_ONESHOT, DRIVER_NAME, ddata); if (error) { |