On 2022/3/23 21:11, Rob Herring wrote:
On Wed, Mar 23, 2022 at 12:12:43PM +0800, Sui Jingfeng wrote:
On 2022/3/23 04:49, Rob Herring wrote:
+/*
+ * mainly for dc in ls7a1000 which have builtin gpio emulated i2c
+ *
+ * @index : output channel index, 0 for DVO0, 1 for DVO1
+ */
+struct lsdc_i2
On Thu, Mar 24, 2022 at 03:32:01PM +0800, Sui Jingfeng wrote:
>
> On 2022/3/23 04:49, Rob Herring wrote:
> > > + }
> > > +
> > > + spin_lock_init(&li2c->reglock);
> > > +
> > > + snprintf(compat, sizeof(compat), "lsdc,i2c-gpio-%d", index);
> > compatible values shouldn't have an index and you shou
On Thu, Mar 24, 2022 at 09:39:49AM +0800, Sui Jingfeng wrote:
>
> On 2022/3/23 04:49, Rob Herring wrote:
> > On Tue, Mar 22, 2022 at 12:29:16AM +0800, Sui Jingfeng wrote:
> > > From: suijingfeng
> > >
> > > There is a display controller in loongson's LS2K1000 SoC and LS7A1000
> > > bridge chip,
On 2022/3/23 04:49, Rob Herring wrote:
+ }
+
+ spin_lock_init(&li2c->reglock);
+
+ snprintf(compat, sizeof(compat), "lsdc,i2c-gpio-%d", index);
compatible values shouldn't have an index and you shouldn't need a
index in DT. You need to iterate over child nodes with matching
c
On 2022/3/23 21:11, Rob Herring wrote:
On Wed, Mar 23, 2022 at 12:12:43PM +0800, Sui Jingfeng wrote:
On 2022/3/23 04:49, Rob Herring wrote:
+/*
+ * mainly for dc in ls7a1000 which have builtin gpio emulated i2c
+ *
+ * @index : output channel index, 0 for DVO0, 1 for DVO1
+ */
+struct lsdc_i2
On 2022/3/23 04:49, Rob Herring wrote:
On Tue, Mar 22, 2022 at 12:29:16AM +0800, Sui Jingfeng wrote:
From: suijingfeng
There is a display controller in loongson's LS2K1000 SoC and LS7A1000
bridge chip, the display controller is a PCI device in those chips. It
has two display pipes but with o
On Wed, Mar 23, 2022 at 12:12:43PM +0800, Sui Jingfeng wrote:
>
> On 2022/3/23 04:49, Rob Herring wrote:
> > > +/*
> > > + * mainly for dc in ls7a1000 which have builtin gpio emulated i2c
> > > + *
> > > + * @index : output channel index, 0 for DVO0, 1 for DVO1
> > > + */
> > > +struct lsdc_i2c *l
On 2022/3/23 04:49, Rob Herring wrote:
+
+ if (state) {
+ val = readb(li2c->dir_reg);
+ val |= mask;
+ writeb(val, li2c->dir_reg);
+ } else {
+ val = readb(li2c->dir_reg);
+ val &= ~mask;
+ writeb(va
On 2022/3/23 04:49, Rob Herring wrote:
+/*
+ * ls7a_gpio_i2c_set - set the state of a gpio pin indicated by mask
+ * @mask: gpio pin mask
+ */
+static void ls7a_gpio_i2c_set(struct lsdc_i2c * const li2c, int mask, int
state)
+{
+ unsigned long flags;
+ u8 val;
+
+ spin_lock_i
On 2022/3/23 04:49, Rob Herring wrote:
This condition is never true. We're in the 'else' because !state.
Thanks for your sharp eyes, after the gpio emulate i2c driver works, i do not
pay much
attention to it and get hurry to do other things. I will fix this issue at next
version
and reply
On 2022/3/23 04:49, Rob Herring wrote:
+/*
+ * mainly for dc in ls7a1000 which have builtin gpio emulated i2c
+ *
+ * @index : output channel index, 0 for DVO0, 1 for DVO1
+ */
+struct lsdc_i2c *lsdc_create_i2c_chan(struct device *dev, void *base, unsigned
int index)
+{
+ char compat[32]
On Tue, Mar 22, 2022 at 12:29:16AM +0800, Sui Jingfeng wrote:
> From: suijingfeng
>
> There is a display controller in loongson's LS2K1000 SoC and LS7A1000
> bridge chip, the display controller is a PCI device in those chips. It
> has two display pipes but with only one hardware cursor. Each way
From: suijingfeng
There is a display controller in loongson's LS2K1000 SoC and LS7A1000
bridge chip, the display controller is a PCI device in those chips. It
has two display pipes but with only one hardware cursor. Each way has
a DVO interface which provide RGB888 signals, vertical & horizontal
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