change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/pcmcia/sa1111_jornada720.c
..
..
@@ -6,29 +6,62 @@
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  *
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  */
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8
 #include <linux/module.h>
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-#include <linux/kernel.h>
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9
 #include <linux/device.h>
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 #include <linux/errno.h>
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+#include <linux/gpio/consumer.h>
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 #include <linux/init.h>
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 #include <linux/io.h>
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14
 
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 #include <mach/hardware.h>
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-#include <asm/hardware/sa1111.h>
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 #include <asm/mach-types.h>
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17
 
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 #include "sa1111_generic.h"
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19
 
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-/* Does SOCKET1_3V actually do anything? */
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-#define SOCKET0_POWER	GPIO_GPIO0
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-#define SOCKET0_3V	GPIO_GPIO2
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-#define SOCKET1_POWER	(GPIO_GPIO1 | GPIO_GPIO3)
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-#define SOCKET1_3V	GPIO_GPIO3
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+/*
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+ * Socket 0 power: GPIO A0
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+ * Socket 0 3V: GPIO A2
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+ * Socket 1 power: GPIO A1 & GPIO A3
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+ * Socket 1 3V: GPIO A3
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+ * Does Socket 1 3V actually do anything?
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+ */
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+enum {
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+	J720_GPIO_PWR,
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+	J720_GPIO_3V,
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+	J720_GPIO_MAX,
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+};
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+struct jornada720_data {
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+	struct gpio_desc *gpio[J720_GPIO_MAX];
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+};
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+
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+static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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+{
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+	struct device *dev = skt->socket.dev.parent;
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+	struct jornada720_data *j;
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+
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+	j = devm_kzalloc(dev, sizeof(*j), GFP_KERNEL);
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+	if (!j)
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+		return -ENOMEM;
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+
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+	j->gpio[J720_GPIO_PWR] = devm_gpiod_get(dev, skt->nr ? "s1-power" :
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+						"s0-power", GPIOD_OUT_LOW);
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+	if (IS_ERR(j->gpio[J720_GPIO_PWR]))
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+		return PTR_ERR(j->gpio[J720_GPIO_PWR]);
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+
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+	j->gpio[J720_GPIO_3V] = devm_gpiod_get(dev, skt->nr ? "s1-3v" :
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+					       "s0-3v", GPIOD_OUT_LOW);
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+	if (IS_ERR(j->gpio[J720_GPIO_3V]))
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+		return PTR_ERR(j->gpio[J720_GPIO_3V]);
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+
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+	skt->driver_data = j;
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+
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+	return 0;
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+}
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59
 
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 static int
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 jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
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 {
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-	struct sa1111_pcmcia_socket *s = to_skt(skt);
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-	unsigned int pa_dwr_mask, pa_dwr_set;
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+	struct jornada720_data *j = skt->driver_data;
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+	DECLARE_BITMAP(values, J720_GPIO_MAX) = { 0, };
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 	int ret;
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66
 
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 	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
..
..
@@ -36,35 +69,34 @@
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69
 
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 	switch (skt->nr) {
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 	case 0:
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-		pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
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-
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 		switch (state->Vcc) {
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 		default:
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 		case  0:
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-			pa_dwr_set = 0;
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+			__assign_bit(J720_GPIO_PWR, values, 0);
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+			__assign_bit(J720_GPIO_3V, values, 0);
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 			break;
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 		case 33:
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-			pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
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+			__assign_bit(J720_GPIO_PWR, values, 1);
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+			__assign_bit(J720_GPIO_3V, values, 1);
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 			break;
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 		case 50:
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-			pa_dwr_set = SOCKET0_POWER;
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+			__assign_bit(J720_GPIO_PWR, values, 1);
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+			__assign_bit(J720_GPIO_3V, values, 0);
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 			break;
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 		}
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 		break;
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88
 
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 	case 1:
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-		pa_dwr_mask = SOCKET1_POWER;
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-
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90
 		switch (state->Vcc) {
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 		default:
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 		case 0:
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-			pa_dwr_set = 0;
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+			__assign_bit(J720_GPIO_PWR, values, 0);
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+			__assign_bit(J720_GPIO_3V, values, 0);
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 			break;
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 		case 33:
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-			pa_dwr_set = SOCKET1_POWER;
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-			break;
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 		case 50:
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-			pa_dwr_set = SOCKET1_POWER;
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+			__assign_bit(J720_GPIO_PWR, values, 1);
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+			__assign_bit(J720_GPIO_3V, values, 1);
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 			break;
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101
 		}
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102
 		break;
..
..
@@ -81,13 +113,15 @@
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113
 
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 	ret = sa1111_pcmcia_configure_socket(skt, state);
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115
 	if (ret == 0)
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-		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
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+		ret = gpiod_set_array_value_cansleep(J720_GPIO_MAX, j->gpio,
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+						     NULL, values);
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118
 
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 	return ret;
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120
 }
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121
 
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 static struct pcmcia_low_level jornada720_pcmcia_ops = {
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 	.owner			= THIS_MODULE,
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+	.hw_init		= jornada720_pcmcia_hw_init,
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 	.configure_socket	= jornada720_pcmcia_configure_socket,
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 	.first			= 0,
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127
 	.nr			= 2,
..
..
@@ -95,15 +129,8 @@
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129
 
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 int pcmcia_jornada720_init(struct sa1111_dev *sadev)
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 {
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-	unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
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-
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 	/* Fixme: why messing around with SA11x0's GPIO1? */
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 	GRER |= 0x00000002;
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-
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-	/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
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-	sa1111_set_io_dir(sadev, pin, 0, 0);
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-	sa1111_set_io(sadev, pin, 0);
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-	sa1111_set_sleep_io(sadev, pin, 0);
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134
 
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 	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
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 	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,