diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-06-22 09:27:17 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2016-06-29 12:16:47 +0300 |
| commit | f37be01e6dc606f2fcc5e95c9933d948ce19bd35 (patch) | |
| tree | 41ec39f826b8a43df00173883dc4817748599d60 | |
| parent | 0a58da1e2f25f213fb72d7d6a18dff9562621215 (diff) | |
| download | linux-f37be01e6dc606f2fcc5e95c9933d948ce19bd35.tar.xz | |
mfd: qcom_rpm: Parametrize also ack selector size
The RPM has two sets of selectors (IPC bit fields): request and
acknowledge. Apparently, some models use 4*32 bit words for select
and some use 7*32 bit words for request, but all use 7*32 words
for acknowledge bits.
So apparently you can on the models with requests of 4*32 select
bits send 4*32 messages and get 7*32 different replies, so on ACK
interrupt, 7*32 bit words need to be read. This is how the vendor
code apparently works.
Cc: stable@vger.kernel.org
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
| -rw-r--r-- | drivers/mfd/qcom_rpm.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c index 710cae2a9b02..2e44323455dd 100644 --- a/drivers/mfd/qcom_rpm.c +++ b/drivers/mfd/qcom_rpm.c @@ -39,7 +39,8 @@ struct qcom_rpm_data { unsigned int req_sel_off; unsigned int ack_ctx_off; unsigned int ack_sel_off; - unsigned int sel_size; + unsigned int req_sel_size; + unsigned int ack_sel_size; }; struct qcom_rpm { @@ -160,7 +161,8 @@ static const struct qcom_rpm_data apq8064_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = { @@ -248,7 +250,8 @@ static const struct qcom_rpm_data msm8660_template = { .req_sel_off = 11, .ack_ctx_off = 19, .ack_sel_off = 27, - .sel_size = 7, + .req_sel_size = 7, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = { @@ -335,7 +338,8 @@ static const struct qcom_rpm_data msm8960_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = { @@ -380,7 +384,8 @@ static const struct qcom_rpm_data ipq806x_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct of_device_id qcom_rpm_of_match[] = { @@ -417,7 +422,7 @@ int qcom_rpm_write(struct qcom_rpm *rpm, writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i)); bitmap_set((unsigned long *)sel_mask, res->select_id, 1); - for (i = 0; i < rpm->data->sel_size; i++) { + for (i = 0; i < rpm->data->req_sel_size; i++) { writel_relaxed(sel_mask[i], RPM_CTRL_REG(rpm, rpm->data->req_sel_off + i)); } @@ -446,7 +451,7 @@ static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev) int i; ack = readl_relaxed(RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off)); - for (i = 0; i < rpm->data->sel_size; i++) + for (i = 0; i < rpm->data->ack_sel_size; i++) writel_relaxed(0, RPM_CTRL_REG(rpm, rpm->data->ack_sel_off + i)); writel(0, RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off)); |