ptp: ocp: vectorize the sma accessor functions

Move the SMA get and set functions into an operations vector for
different boards.

Create wrappers for the accessor functions.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonathan Lemon 2022-05-19 14:21:50 -07:00 committed by Jakub Kicinski
parent 3f3fe41c0b
commit caab82cdbf

View file

@ -321,7 +321,7 @@ struct ptp_ocp {
u64 fw_cap;
struct ptp_ocp_signal signal[4];
struct ptp_ocp_sma_connector sma[4];
u8 sma_tbl;
const struct ocp_sma_op *sma_op;
};
#define OCP_REQ_TIMESTAMP BIT(0)
@ -700,10 +700,31 @@ static const struct ocp_selector ptp_ocp_sma_out[] = {
{ }
};
static const struct ocp_selector *ocp_sma_tbl[][2] = {
{ ptp_ocp_sma_in, ptp_ocp_sma_out },
struct ocp_sma_op {
const struct ocp_selector *tbl[2];
u32 (*get)(struct ptp_ocp *bp, int sma_nr);
int (*set_inputs)(struct ptp_ocp *bp, int sma_nr, u32 val);
int (*set_output)(struct ptp_ocp *bp, int sma_nr, u32 val);
};
static u32
ptp_ocp_sma_get(struct ptp_ocp *bp, int sma_nr)
{
return bp->sma_op->get(bp, sma_nr);
}
static int
ptp_ocp_sma_set_inputs(struct ptp_ocp *bp, int sma_nr, u32 val)
{
return bp->sma_op->set_inputs(bp, sma_nr, val);
}
static int
ptp_ocp_sma_set_output(struct ptp_ocp *bp, int sma_nr, u32 val)
{
return bp->sma_op->set_output(bp, sma_nr, val);
}
static const char *
ptp_ocp_select_name_from_val(const struct ocp_selector *tbl, int val)
{
@ -1875,6 +1896,140 @@ ptp_ocp_attr_group_add(struct ptp_ocp *bp,
return err;
}
static void
ptp_ocp_enable_fpga(u32 __iomem *reg, u32 bit, bool enable)
{
u32 ctrl;
bool on;
ctrl = ioread32(reg);
on = ctrl & bit;
if (on ^ enable) {
ctrl &= ~bit;
ctrl |= enable ? bit : 0;
iowrite32(ctrl, reg);
}
}
static void
ptp_ocp_irig_out(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->irig_out->ctrl,
IRIG_M_CTRL_ENABLE, enable);
}
static void
ptp_ocp_irig_in(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->irig_in->ctrl,
IRIG_S_CTRL_ENABLE, enable);
}
static void
ptp_ocp_dcf_out(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->dcf_out->ctrl,
DCF_M_CTRL_ENABLE, enable);
}
static void
ptp_ocp_dcf_in(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->dcf_in->ctrl,
DCF_S_CTRL_ENABLE, enable);
}
static void
__handle_signal_outputs(struct ptp_ocp *bp, u32 val)
{
ptp_ocp_irig_out(bp, val & 0x00100010);
ptp_ocp_dcf_out(bp, val & 0x00200020);
}
static void
__handle_signal_inputs(struct ptp_ocp *bp, u32 val)
{
ptp_ocp_irig_in(bp, val & 0x00100010);
ptp_ocp_dcf_in(bp, val & 0x00200020);
}
static u32
ptp_ocp_sma_fb_get(struct ptp_ocp *bp, int sma_nr)
{
u32 __iomem *gpio;
u32 shift;
if (bp->sma[sma_nr - 1].fixed_fcn)
return (sma_nr - 1) & 1;
if (bp->sma[sma_nr - 1].mode == SMA_MODE_IN)
gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
else
gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
shift = sma_nr & 1 ? 0 : 16;
return (ioread32(gpio) >> shift) & 0xffff;
}
static int
ptp_ocp_sma_fb_set_output(struct ptp_ocp *bp, int sma_nr, u32 val)
{
u32 reg, mask, shift;
unsigned long flags;
u32 __iomem *gpio;
gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
shift = sma_nr & 1 ? 0 : 16;
mask = 0xffff << (16 - shift);
spin_lock_irqsave(&bp->lock, flags);
reg = ioread32(gpio);
reg = (reg & mask) | (val << shift);
__handle_signal_outputs(bp, reg);
iowrite32(reg, gpio);
spin_unlock_irqrestore(&bp->lock, flags);
return 0;
}
static int
ptp_ocp_sma_fb_set_inputs(struct ptp_ocp *bp, int sma_nr, u32 val)
{
u32 reg, mask, shift;
unsigned long flags;
u32 __iomem *gpio;
gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
shift = sma_nr & 1 ? 0 : 16;
mask = 0xffff << (16 - shift);
spin_lock_irqsave(&bp->lock, flags);
reg = ioread32(gpio);
reg = (reg & mask) | (val << shift);
__handle_signal_inputs(bp, reg);
iowrite32(reg, gpio);
spin_unlock_irqrestore(&bp->lock, flags);
return 0;
}
static const struct ocp_sma_op ocp_fb_sma_op = {
.tbl = { ptp_ocp_sma_in, ptp_ocp_sma_out },
.get = ptp_ocp_sma_fb_get,
.set_inputs = ptp_ocp_sma_fb_set_inputs,
.set_output = ptp_ocp_sma_fb_set_output,
};
static void
ptp_ocp_sma_init(struct ptp_ocp *bp)
{
@ -1976,6 +2131,7 @@ ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
bp->flash_start = 1024 * 4096;
bp->eeprom_map = fb_eeprom_map;
bp->fw_version = ioread32(&bp->image->version);
bp->sma_op = &ocp_fb_sma_op;
ptp_ocp_fb_set_version(bp);
@ -2027,71 +2183,6 @@ ptp_ocp_register_resources(struct ptp_ocp *bp, kernel_ulong_t driver_data)
return err;
}
static void
ptp_ocp_enable_fpga(u32 __iomem *reg, u32 bit, bool enable)
{
u32 ctrl;
bool on;
ctrl = ioread32(reg);
on = ctrl & bit;
if (on ^ enable) {
ctrl &= ~bit;
ctrl |= enable ? bit : 0;
iowrite32(ctrl, reg);
}
}
static void
ptp_ocp_irig_out(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->irig_out->ctrl,
IRIG_M_CTRL_ENABLE, enable);
}
static void
ptp_ocp_irig_in(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->irig_in->ctrl,
IRIG_S_CTRL_ENABLE, enable);
}
static void
ptp_ocp_dcf_out(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->dcf_out->ctrl,
DCF_M_CTRL_ENABLE, enable);
}
static void
ptp_ocp_dcf_in(struct ptp_ocp *bp, bool enable)
{
return ptp_ocp_enable_fpga(&bp->dcf_in->ctrl,
DCF_S_CTRL_ENABLE, enable);
}
static void
__handle_signal_outputs(struct ptp_ocp *bp, u32 val)
{
ptp_ocp_irig_out(bp, val & 0x00100010);
ptp_ocp_dcf_out(bp, val & 0x00200020);
}
static void
__handle_signal_inputs(struct ptp_ocp *bp, u32 val)
{
ptp_ocp_irig_in(bp, val & 0x00100010);
ptp_ocp_dcf_in(bp, val & 0x00200020);
}
/*
* ANT0 == gps (in)
* ANT1 == sma1 (in)
* ANT2 == sma2 (in)
* ANT3 == sma3 (out)
* ANT4 == sma4 (out)
*/
static ssize_t
ptp_ocp_show_output(const struct ocp_selector *tbl, u32 val, char *buf,
int def_val)
@ -2171,24 +2262,6 @@ sma_parse_inputs(const struct ocp_selector * const tbl[], const char *buf,
return ret;
}
static u32
ptp_ocp_sma_get(struct ptp_ocp *bp, int sma_nr, enum ptp_ocp_sma_mode mode)
{
u32 __iomem *gpio;
u32 shift;
if (bp->sma[sma_nr - 1].fixed_fcn)
return (sma_nr - 1) & 1;
if (mode == SMA_MODE_IN)
gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
else
gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
shift = sma_nr & 1 ? 0 : 16;
return (ioread32(gpio) >> shift) & 0xffff;
}
static ssize_t
ptp_ocp_sma_show(struct ptp_ocp *bp, int sma_nr, char *buf,
int default_in_val, int default_out_val)
@ -2197,9 +2270,8 @@ ptp_ocp_sma_show(struct ptp_ocp *bp, int sma_nr, char *buf,
const struct ocp_selector * const *tbl;
u32 val;
tbl = ocp_sma_tbl[bp->sma_tbl];
val = ptp_ocp_sma_get(bp, sma_nr, sma->mode) & SMA_SELECT_MASK;
tbl = bp->sma_op->tbl;
val = ptp_ocp_sma_get(bp, sma_nr) & SMA_SELECT_MASK;
if (sma->mode == SMA_MODE_IN) {
if (sma->disabled)
@ -2242,54 +2314,6 @@ sma4_show(struct device *dev, struct device_attribute *attr, char *buf)
return ptp_ocp_sma_show(bp, 4, buf, -1, 1);
}
static void
ptp_ocp_sma_store_output(struct ptp_ocp *bp, int sma_nr, u32 val)
{
u32 reg, mask, shift;
unsigned long flags;
u32 __iomem *gpio;
gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
shift = sma_nr & 1 ? 0 : 16;
mask = 0xffff << (16 - shift);
spin_lock_irqsave(&bp->lock, flags);
reg = ioread32(gpio);
reg = (reg & mask) | (val << shift);
__handle_signal_outputs(bp, reg);
iowrite32(reg, gpio);
spin_unlock_irqrestore(&bp->lock, flags);
}
static void
ptp_ocp_sma_store_inputs(struct ptp_ocp *bp, int sma_nr, u32 val)
{
u32 reg, mask, shift;
unsigned long flags;
u32 __iomem *gpio;
gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
shift = sma_nr & 1 ? 0 : 16;
mask = 0xffff << (16 - shift);
spin_lock_irqsave(&bp->lock, flags);
reg = ioread32(gpio);
reg = (reg & mask) | (val << shift);
__handle_signal_inputs(bp, reg);
iowrite32(reg, gpio);
spin_unlock_irqrestore(&bp->lock, flags);
}
static int
ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr)
{
@ -2298,7 +2322,7 @@ ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr)
int val;
mode = sma->mode;
val = sma_parse_inputs(ocp_sma_tbl[bp->sma_tbl], buf, &mode);
val = sma_parse_inputs(bp->sma_op->tbl, buf, &mode);
if (val < 0)
return val;
@ -2315,9 +2339,9 @@ ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr)
if (mode != sma->mode) {
if (mode == SMA_MODE_IN)
ptp_ocp_sma_store_output(bp, sma_nr, 0);
ptp_ocp_sma_set_output(bp, sma_nr, 0);
else
ptp_ocp_sma_store_inputs(bp, sma_nr, 0);
ptp_ocp_sma_set_inputs(bp, sma_nr, 0);
sma->mode = mode;
}
@ -2328,11 +2352,11 @@ ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr)
val = 0;
if (mode == SMA_MODE_IN)
ptp_ocp_sma_store_inputs(bp, sma_nr, val);
val = ptp_ocp_sma_set_inputs(bp, sma_nr, val);
else
ptp_ocp_sma_store_output(bp, sma_nr, val);
val = ptp_ocp_sma_set_output(bp, sma_nr, val);
return 0;
return val;
}
static ssize_t
@ -2389,7 +2413,7 @@ available_sma_inputs_show(struct device *dev,
{
struct ptp_ocp *bp = dev_get_drvdata(dev);
return ptp_ocp_select_table_show(ocp_sma_tbl[bp->sma_tbl][0], buf);
return ptp_ocp_select_table_show(bp->sma_op->tbl[0], buf);
}
static DEVICE_ATTR_RO(available_sma_inputs);
@ -2399,7 +2423,7 @@ available_sma_outputs_show(struct device *dev,
{
struct ptp_ocp *bp = dev_get_drvdata(dev);
return ptp_ocp_select_table_show(ocp_sma_tbl[bp->sma_tbl][1], buf);
return ptp_ocp_select_table_show(bp->sma_op->tbl[1], buf);
}
static DEVICE_ATTR_RO(available_sma_outputs);