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pinctrl: qcom: Add EGPIO feature support to pinctrl driver

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Island IO can be assigned to Apps TLMM dynamically
if that island is not using the pin for any connectivity.
Add support for enabling EGPIO feature if the pin can
support it. EGPIO_PRESENT bit shows if EGPIO feature
is present or not for particular pin. Once EGPIO_ENABLE
bit is set the pin is now controlled by Apps TLMM.
When pinctrl properties are getting initialized by device
driver framework, pin functions select would call to
msm_pinmux_set_mux function to select pin function and
enable EGPIO.

Change-Id: I64514904096286f2a5df351880cd56d753f0658f
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Prasad Sodagudi 2018-06-06 17:14:43 -07:00 committed by Elliot Berman
parent d9f382896a
commit 49d73826d0
3 changed files with 8 additions and 0 deletions
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2
drivers/pinctrl/qcom/pinctrl-lahaina.c
View File

@ -45,6 +45,8 @@
.mux_bit = 2, \
.pull_bit = 0, \
.drv_bit = 6, \
.egpio_enable = 12, \
.egpio_present = 11, \
.oe_bit = 9, \
.in_bit = 0, \
.out_bit = 1, \

4
drivers/pinctrl/qcom/pinctrl-msm.c
View File

@ -180,6 +180,10 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev,
val = msm_readl_ctl(pctrl, g);
val &= ~mask;
val |= i << g->mux_bit;
/* Check if egpio present and enable that feature */
if (val & BIT(g->egpio_present))
val |= BIT(g->egpio_enable);
msm_writel_ctl(val, pctrl, g);
raw_spin_unlock_irqrestore(&pctrl->lock, flags);

2
drivers/pinctrl/qcom/pinctrl-msm.h
View File

@ -75,6 +75,8 @@ struct msm_pingroup {
unsigned pull_bit:5;
unsigned drv_bit:5;
unsigned egpio_enable:5;
unsigned egpio_present:5;
unsigned oe_bit:5;
unsigned in_bit:5;
unsigned out_bit:5;